./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec7_product30.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db1fe45a-06f8-40b3-8872-50243d92d47c/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db1fe45a-06f8-40b3-8872-50243d92d47c/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_db1fe45a-06f8-40b3-8872-50243d92d47c/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db1fe45a-06f8-40b3-8872-50243d92d47c/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec7_product30.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db1fe45a-06f8-40b3-8872-50243d92d47c/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_db1fe45a-06f8-40b3-8872-50243d92d47c/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 f0b632d57a1aaab7587941b987ac776406d0d2705d0d18f7c4a153447ae1ce66 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 14:20:02,856 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 14:20:02,919 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db1fe45a-06f8-40b3-8872-50243d92d47c/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 14:20:02,923 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 14:20:02,924 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 14:20:02,945 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 14:20:02,946 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 14:20:02,946 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 14:20:02,947 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 14:20:02,948 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 14:20:02,948 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 14:20:02,949 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 14:20:02,949 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 14:20:02,950 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 14:20:02,950 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 14:20:02,951 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 14:20:02,951 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 14:20:02,952 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 14:20:02,952 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 14:20:02,953 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 14:20:02,953 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 14:20:02,955 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 14:20:02,955 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 14:20:02,956 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 14:20:02,956 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 14:20:02,956 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 14:20:02,957 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 14:20:02,957 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 14:20:02,957 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 14:20:02,958 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 14:20:02,958 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 14:20:02,958 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 14:20:02,959 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 14:20:02,959 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 14:20:02,959 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 14:20:02,960 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 14:20:02,960 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 14:20:02,960 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:20:02,960 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 14:20:02,960 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 14:20:02,960 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 14:20:02,961 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 14:20:02,961 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 14:20:02,961 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 14:20:02,961 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 14:20:02,961 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 14:20:02,962 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 14:20:02,962 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_db1fe45a-06f8-40b3-8872-50243d92d47c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db1fe45a-06f8-40b3-8872-50243d92d47c/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f0b632d57a1aaab7587941b987ac776406d0d2705d0d18f7c4a153447ae1ce66 [2023-12-02 14:20:03,175 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 14:20:03,207 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 14:20:03,210 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 14:20:03,212 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 14:20:03,212 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 14:20:03,213 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db1fe45a-06f8-40b3-8872-50243d92d47c/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/product-lines/email_spec7_product30.cil.c [2023-12-02 14:20:05,997 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 14:20:06,265 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 14:20:06,266 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db1fe45a-06f8-40b3-8872-50243d92d47c/sv-benchmarks/c/product-lines/email_spec7_product30.cil.c [2023-12-02 14:20:06,286 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db1fe45a-06f8-40b3-8872-50243d92d47c/bin/utaipan-verify-nQ1chXbOIh/data/1f3398447/3d7718330e414c0b8c8d28ad2fa376a8/FLAG4d671d47e [2023-12-02 14:20:06,299 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db1fe45a-06f8-40b3-8872-50243d92d47c/bin/utaipan-verify-nQ1chXbOIh/data/1f3398447/3d7718330e414c0b8c8d28ad2fa376a8 [2023-12-02 14:20:06,301 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 14:20:06,303 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 14:20:06,304 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 14:20:06,305 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 14:20:06,309 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 14:20:06,310 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:20:06" (1/1) ... [2023-12-02 14:20:06,311 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71f72748 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:20:06, skipping insertion in model container [2023-12-02 14:20:06,311 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:20:06" (1/1) ... [2023-12-02 14:20:06,373 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 14:20:06,755 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_db1fe45a-06f8-40b3-8872-50243d92d47c/sv-benchmarks/c/product-lines/email_spec7_product30.cil.c[50838,50851] [2023-12-02 14:20:06,844 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:20:06,858 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 14:20:06,866 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [48] [2023-12-02 14:20:06,867 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [414] [2023-12-02 14:20:06,867 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [639] [2023-12-02 14:20:06,868 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EncryptVerify_spec.i","") [1051] [2023-12-02 14:20:06,868 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [1082] [2023-12-02 14:20:06,868 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [1100] [2023-12-02 14:20:06,868 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2180] [2023-12-02 14:20:06,868 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2189] [2023-12-02 14:20:06,869 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [2227] [2023-12-02 14:20:06,869 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [2587] [2023-12-02 14:20:06,869 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2723] [2023-12-02 14:20:06,935 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_db1fe45a-06f8-40b3-8872-50243d92d47c/sv-benchmarks/c/product-lines/email_spec7_product30.cil.c[50838,50851] [2023-12-02 14:20:06,958 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:20:07,029 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:20:07,036 INFO L206 MainTranslator]: Completed translation [2023-12-02 14:20:07,036 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:20:07 WrapperNode [2023-12-02 14:20:07,037 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 14:20:07,038 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 14:20:07,038 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 14:20:07,038 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 14:20:07,044 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:20:07" (1/1) ... [2023-12-02 14:20:07,070 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:20:07" (1/1) ... [2023-12-02 14:20:07,119 INFO L138 Inliner]: procedures = 131, calls = 215, calls flagged for inlining = 60, calls inlined = 50, statements flattened = 916 [2023-12-02 14:20:07,119 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 14:20:07,120 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 14:20:07,120 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 14:20:07,121 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 14:20:07,130 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:20:07" (1/1) ... [2023-12-02 14:20:07,131 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:20:07" (1/1) ... [2023-12-02 14:20:07,137 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:20:07" (1/1) ... [2023-12-02 14:20:07,138 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:20:07" (1/1) ... [2023-12-02 14:20:07,160 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:20:07" (1/1) ... [2023-12-02 14:20:07,170 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:20:07" (1/1) ... [2023-12-02 14:20:07,176 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:20:07" (1/1) ... [2023-12-02 14:20:07,182 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:20:07" (1/1) ... [2023-12-02 14:20:07,190 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 14:20:07,191 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 14:20:07,192 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 14:20:07,192 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 14:20:07,193 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:20:07" (1/1) ... [2023-12-02 14:20:07,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:20:07,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db1fe45a-06f8-40b3-8872-50243d92d47c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:20:07,226 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db1fe45a-06f8-40b3-8872-50243d92d47c/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 14:20:07,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db1fe45a-06f8-40b3-8872-50243d92d47c/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 14:20:07,265 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2023-12-02 14:20:07,266 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2023-12-02 14:20:07,266 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2023-12-02 14:20:07,266 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2023-12-02 14:20:07,266 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2023-12-02 14:20:07,266 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2023-12-02 14:20:07,267 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-12-02 14:20:07,267 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-12-02 14:20:07,267 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-12-02 14:20:07,267 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-12-02 14:20:07,267 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-12-02 14:20:07,268 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-12-02 14:20:07,268 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-12-02 14:20:07,268 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-12-02 14:20:07,268 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2023-12-02 14:20:07,269 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2023-12-02 14:20:07,269 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2023-12-02 14:20:07,269 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2023-12-02 14:20:07,269 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-12-02 14:20:07,269 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-12-02 14:20:07,270 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2023-12-02 14:20:07,270 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-12-02 14:20:07,270 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-12-02 14:20:07,270 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-12-02 14:20:07,271 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-12-02 14:20:07,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 14:20:07,271 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2023-12-02 14:20:07,271 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2023-12-02 14:20:07,271 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2023-12-02 14:20:07,271 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2023-12-02 14:20:07,272 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-12-02 14:20:07,272 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-12-02 14:20:07,272 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-12-02 14:20:07,272 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-12-02 14:20:07,272 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-12-02 14:20:07,273 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-12-02 14:20:07,273 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2023-12-02 14:20:07,273 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2023-12-02 14:20:07,273 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-12-02 14:20:07,273 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-12-02 14:20:07,274 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2023-12-02 14:20:07,274 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2023-12-02 14:20:07,274 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-12-02 14:20:07,274 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-12-02 14:20:07,274 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2023-12-02 14:20:07,274 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2023-12-02 14:20:07,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 14:20:07,275 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-12-02 14:20:07,275 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-12-02 14:20:07,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 14:20:07,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 14:20:07,462 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 14:20:07,464 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 14:20:08,118 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 14:20:08,545 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 14:20:08,545 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 14:20:08,547 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:20:08 BoogieIcfgContainer [2023-12-02 14:20:08,547 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 14:20:08,549 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 14:20:08,550 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 14:20:08,553 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 14:20:08,553 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:20:06" (1/3) ... [2023-12-02 14:20:08,554 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6edb9ef0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:20:08, skipping insertion in model container [2023-12-02 14:20:08,554 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:20:07" (2/3) ... [2023-12-02 14:20:08,554 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6edb9ef0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:20:08, skipping insertion in model container [2023-12-02 14:20:08,554 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:20:08" (3/3) ... [2023-12-02 14:20:08,555 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec7_product30.cil.c [2023-12-02 14:20:08,575 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 14:20:08,575 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 14:20:08,628 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 14:20:08,635 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;@7e7a6f61, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 14:20:08,635 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 14:20:08,640 INFO L276 IsEmpty]: Start isEmpty. Operand has 186 states, 109 states have (on average 1.3302752293577982) internal successors, (145), 113 states have internal predecessors, (145), 52 states have call successors, (52), 23 states have call predecessors, (52), 23 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2023-12-02 14:20:08,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-02 14:20:08,654 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:20:08,655 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:20:08,656 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:20:08,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:20:08,661 INFO L85 PathProgramCache]: Analyzing trace with hash 499930064, now seen corresponding path program 1 times [2023-12-02 14:20:08,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:20:08,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789945411] [2023-12-02 14:20:08,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:20:08,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:20:08,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:20:09,066 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 14:20:09,066 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:20:09,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789945411] [2023-12-02 14:20:09,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789945411] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:20:09,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:20:09,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 14:20:09,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461835853] [2023-12-02 14:20:09,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:20:09,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 14:20:09,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:20:09,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 14:20:09,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 14:20:09,110 INFO L87 Difference]: Start difference. First operand has 186 states, 109 states have (on average 1.3302752293577982) internal successors, (145), 113 states have internal predecessors, (145), 52 states have call successors, (52), 23 states have call predecessors, (52), 23 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) Second operand has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-02 14:20:09,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:20:09,234 INFO L93 Difference]: Finished difference Result 289 states and 376 transitions. [2023-12-02 14:20:09,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 14:20:09,237 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 77 [2023-12-02 14:20:09,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:20:09,249 INFO L225 Difference]: With dead ends: 289 [2023-12-02 14:20:09,249 INFO L226 Difference]: Without dead ends: 183 [2023-12-02 14:20:09,254 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 14:20:09,257 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:20:09,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 212 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 14:20:09,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2023-12-02 14:20:09,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2023-12-02 14:20:09,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 107 states have (on average 1.2990654205607477) internal successors, (139), 110 states have internal predecessors, (139), 52 states have call successors, (52), 23 states have call predecessors, (52), 23 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-12-02 14:20:09,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 242 transitions. [2023-12-02 14:20:09,315 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 242 transitions. Word has length 77 [2023-12-02 14:20:09,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:20:09,317 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 242 transitions. [2023-12-02 14:20:09,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-02 14:20:09,317 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 242 transitions. [2023-12-02 14:20:09,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-02 14:20:09,322 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:20:09,323 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:20:09,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 14:20:09,323 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:20:09,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:20:09,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1123822667, now seen corresponding path program 1 times [2023-12-02 14:20:09,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:20:09,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936146628] [2023-12-02 14:20:09,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:20:09,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:20:09,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:20:09,541 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 14:20:09,541 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:20:09,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936146628] [2023-12-02 14:20:09,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936146628] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:20:09,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:20:09,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 14:20:09,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610559393] [2023-12-02 14:20:09,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:20:09,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:20:09,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:20:09,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:20:09,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:20:09,546 INFO L87 Difference]: Start difference. First operand 183 states and 242 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-02 14:20:09,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:20:09,657 INFO L93 Difference]: Finished difference Result 285 states and 364 transitions. [2023-12-02 14:20:09,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:20:09,658 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 78 [2023-12-02 14:20:09,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:20:09,661 INFO L225 Difference]: With dead ends: 285 [2023-12-02 14:20:09,661 INFO L226 Difference]: Without dead ends: 185 [2023-12-02 14:20:09,663 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 14:20:09,665 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 0 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:20:09,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 417 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 14:20:09,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2023-12-02 14:20:09,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2023-12-02 14:20:09,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 109 states have (on average 1.2935779816513762) internal successors, (141), 112 states have internal predecessors, (141), 52 states have call successors, (52), 23 states have call predecessors, (52), 23 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-12-02 14:20:09,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 244 transitions. [2023-12-02 14:20:09,689 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 244 transitions. Word has length 78 [2023-12-02 14:20:09,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:20:09,689 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 244 transitions. [2023-12-02 14:20:09,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-02 14:20:09,690 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 244 transitions. [2023-12-02 14:20:09,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-02 14:20:09,693 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:20:09,694 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:20:09,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 14:20:09,694 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:20:09,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:20:09,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1674782290, now seen corresponding path program 1 times [2023-12-02 14:20:09,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:20:09,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306420404] [2023-12-02 14:20:09,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:20:09,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:20:09,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:20:09,823 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 14:20:09,823 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:20:09,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306420404] [2023-12-02 14:20:09,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306420404] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:20:09,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:20:09,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 14:20:09,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512335210] [2023-12-02 14:20:09,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:20:09,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:20:09,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:20:09,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:20:09,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:20:09,826 INFO L87 Difference]: Start difference. First operand 185 states and 244 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-02 14:20:09,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:20:09,928 INFO L93 Difference]: Finished difference Result 400 states and 547 transitions. [2023-12-02 14:20:09,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:20:09,928 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 83 [2023-12-02 14:20:09,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:20:09,931 INFO L225 Difference]: With dead ends: 400 [2023-12-02 14:20:09,932 INFO L226 Difference]: Without dead ends: 233 [2023-12-02 14:20:09,933 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 14:20:09,934 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 57 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:20:09,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 417 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 14:20:09,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2023-12-02 14:20:09,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 228. [2023-12-02 14:20:09,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 141 states have (on average 1.375886524822695) internal successors, (194), 144 states have internal predecessors, (194), 63 states have call successors, (63), 23 states have call predecessors, (63), 23 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-02 14:20:09,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 319 transitions. [2023-12-02 14:20:09,993 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 319 transitions. Word has length 83 [2023-12-02 14:20:09,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:20:09,994 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 319 transitions. [2023-12-02 14:20:09,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-02 14:20:09,995 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 319 transitions. [2023-12-02 14:20:09,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-02 14:20:09,997 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:20:09,997 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:20:09,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 14:20:09,998 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:20:09,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:20:09,998 INFO L85 PathProgramCache]: Analyzing trace with hash -143063071, now seen corresponding path program 1 times [2023-12-02 14:20:09,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:20:09,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473714648] [2023-12-02 14:20:09,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:20:09,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:20:10,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:20:10,180 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 14:20:10,180 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:20:10,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473714648] [2023-12-02 14:20:10,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473714648] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:20:10,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589226042] [2023-12-02 14:20:10,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:20:10,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:20:10,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db1fe45a-06f8-40b3-8872-50243d92d47c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:20:10,183 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db1fe45a-06f8-40b3-8872-50243d92d47c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:20:10,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db1fe45a-06f8-40b3-8872-50243d92d47c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 14:20:10,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:20:10,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 1027 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 14:20:10,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:20:10,640 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 14:20:10,640 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:20:10,715 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 14:20:10,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589226042] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:20:10,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [774833144] [2023-12-02 14:20:10,737 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2023-12-02 14:20:10,737 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:20:10,741 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:20:10,746 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:20:10,747 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 14:20:53,222 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 223 for LOIs [2023-12-02 14:20:53,384 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 228 for LOIs [2023-12-02 14:20:53,547 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 14:21:46,312 WARN L293 SmtUtils]: Spent 8.88s on a formula simplification. DAG size of input: 490 DAG size of output: 490 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 14:22:00,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [774833144] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:22:00,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 14:22:00,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [4, 4, 4] total 29 [2023-12-02 14:22:00,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320099683] [2023-12-02 14:22:00,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:22:00,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-02 14:22:00,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:22:00,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-02 14:22:00,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=725, Unknown=0, NotChecked=0, Total=812 [2023-12-02 14:22:00,342 INFO L87 Difference]: Start difference. First operand 228 states and 319 transitions. Second operand has 24 states, 16 states have (on average 2.625) internal successors, (42), 15 states have internal predecessors, (42), 7 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2023-12-02 14:22:09,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:22:09,296 INFO L93 Difference]: Finished difference Result 501 states and 734 transitions. [2023-12-02 14:22:09,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-02 14:22:09,297 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 16 states have (on average 2.625) internal successors, (42), 15 states have internal predecessors, (42), 7 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) Word has length 84 [2023-12-02 14:22:09,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:22:09,300 INFO L225 Difference]: With dead ends: 501 [2023-12-02 14:22:09,300 INFO L226 Difference]: Without dead ends: 291 [2023-12-02 14:22:09,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 66.8s TimeCoverageRelationStatistics Valid=87, Invalid=725, Unknown=0, NotChecked=0, Total=812 [2023-12-02 14:22:09,302 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 83 mSDsluCounter, 3056 mSDsCounter, 0 mSdLazyCounter, 2150 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 3280 SdHoareTripleChecker+Invalid, 2159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2023-12-02 14:22:09,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 3280 Invalid, 2159 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 2150 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2023-12-02 14:22:09,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2023-12-02 14:22:09,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 251. [2023-12-02 14:22:09,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 163 states have (on average 1.392638036809816) internal successors, (227), 166 states have internal predecessors, (227), 63 states have call successors, (63), 24 states have call predecessors, (63), 24 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-02 14:22:09,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 352 transitions. [2023-12-02 14:22:09,377 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 352 transitions. Word has length 84 [2023-12-02 14:22:09,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:22:09,378 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 352 transitions. [2023-12-02 14:22:09,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 16 states have (on average 2.625) internal successors, (42), 15 states have internal predecessors, (42), 7 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2023-12-02 14:22:09,379 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 352 transitions. [2023-12-02 14:22:09,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-02 14:22:09,381 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:22:09,382 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:22:09,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db1fe45a-06f8-40b3-8872-50243d92d47c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 14:22:09,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db1fe45a-06f8-40b3-8872-50243d92d47c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:22:09,587 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:22:09,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:22:09,588 INFO L85 PathProgramCache]: Analyzing trace with hash -657816255, now seen corresponding path program 1 times [2023-12-02 14:22:09,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:22:09,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343024789] [2023-12-02 14:22:09,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:22:09,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:22:09,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:22:09,693 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 14:22:09,693 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:22:09,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343024789] [2023-12-02 14:22:09,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343024789] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:22:09,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:22:09,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 14:22:09,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653046327] [2023-12-02 14:22:09,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:22:09,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:22:09,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:22:09,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:22:09,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:22:09,696 INFO L87 Difference]: Start difference. First operand 251 states and 352 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-02 14:22:09,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:22:09,875 INFO L93 Difference]: Finished difference Result 595 states and 868 transitions. [2023-12-02 14:22:09,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:22:09,875 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 89 [2023-12-02 14:22:09,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:22:09,878 INFO L225 Difference]: With dead ends: 595 [2023-12-02 14:22:09,879 INFO L226 Difference]: Without dead ends: 368 [2023-12-02 14:22:09,880 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 14:22:09,881 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 55 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:22:09,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 425 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 14:22:09,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2023-12-02 14:22:09,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 363. [2023-12-02 14:22:09,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 250 states have (on average 1.452) internal successors, (363), 253 states have internal predecessors, (363), 88 states have call successors, (88), 24 states have call predecessors, (88), 24 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2023-12-02 14:22:09,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 538 transitions. [2023-12-02 14:22:09,978 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 538 transitions. Word has length 89 [2023-12-02 14:22:09,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:22:09,978 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 538 transitions. [2023-12-02 14:22:09,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-02 14:22:09,978 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 538 transitions. [2023-12-02 14:22:09,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-02 14:22:09,981 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:22:09,981 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:22:09,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 14:22:09,981 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:22:09,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:22:09,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1620230189, now seen corresponding path program 1 times [2023-12-02 14:22:09,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:22:09,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016117398] [2023-12-02 14:22:09,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:22:09,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:22:10,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:22:10,085 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 14:22:10,085 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:22:10,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016117398] [2023-12-02 14:22:10,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016117398] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:22:10,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976133348] [2023-12-02 14:22:10,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:22:10,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:22:10,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db1fe45a-06f8-40b3-8872-50243d92d47c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:22:10,087 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db1fe45a-06f8-40b3-8872-50243d92d47c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:22:10,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db1fe45a-06f8-40b3-8872-50243d92d47c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 14:22:10,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:22:10,387 INFO L262 TraceCheckSpWp]: Trace formula consists of 1054 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 14:22:10,392 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:22:10,414 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 14:22:10,414 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:22:10,465 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 14:22:10,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976133348] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:22:10,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1452403257] [2023-12-02 14:22:10,470 INFO L159 IcfgInterpreter]: Started Sifa with 73 locations of interest [2023-12-02 14:22:10,470 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:22:10,471 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:22:10,471 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:22:10,471 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 14:23:03,947 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 223 for LOIs [2023-12-02 14:23:04,123 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 470 for LOIs [2023-12-02 14:23:06,293 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 14:23:26,965 WARN L293 SmtUtils]: Spent 6.31s on a formula simplification. DAG size of input: 470 DAG size of output: 470 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 14:23:36,658 WARN L293 SmtUtils]: Spent 9.42s on a formula simplification. DAG size of input: 500 DAG size of output: 495 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 14:24:15,591 WARN L293 SmtUtils]: Spent 9.44s on a formula simplification. DAG size of input: 493 DAG size of output: 493 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 14:24:33,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1452403257] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:24:33,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 14:24:33,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [4, 4, 4] total 33 [2023-12-02 14:24:33,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943656186] [2023-12-02 14:24:33,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:24:33,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-02 14:24:33,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:24:33,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-02 14:24:33,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=940, Unknown=0, NotChecked=0, Total=1056 [2023-12-02 14:24:33,485 INFO L87 Difference]: Start difference. First operand 363 states and 538 transitions. Second operand has 28 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 8 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) [2023-12-02 14:24:48,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:24:48,338 INFO L93 Difference]: Finished difference Result 742 states and 1129 transitions. [2023-12-02 14:24:48,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-02 14:24:48,339 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 8 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) Word has length 90 [2023-12-02 14:24:48,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:24:48,342 INFO L225 Difference]: With dead ends: 742 [2023-12-02 14:24:48,342 INFO L226 Difference]: Without dead ends: 442 [2023-12-02 14:24:48,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 90.9s TimeCoverageRelationStatistics Valid=127, Invalid=995, Unknown=0, NotChecked=0, Total=1122 [2023-12-02 14:24:48,344 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 150 mSDsluCounter, 2979 mSDsCounter, 0 mSdLazyCounter, 2390 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 3171 SdHoareTripleChecker+Invalid, 2407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2023-12-02 14:24:48,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 3171 Invalid, 2407 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [17 Valid, 2390 Invalid, 0 Unknown, 0 Unchecked, 10.9s Time] [2023-12-02 14:24:48,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2023-12-02 14:24:48,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 377. [2023-12-02 14:24:48,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 262 states have (on average 1.450381679389313) internal successors, (380), 265 states have internal predecessors, (380), 89 states have call successors, (89), 25 states have call predecessors, (89), 25 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2023-12-02 14:24:48,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 557 transitions. [2023-12-02 14:24:48,446 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 557 transitions. Word has length 90 [2023-12-02 14:24:48,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:24:48,446 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 557 transitions. [2023-12-02 14:24:48,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 8 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) [2023-12-02 14:24:48,446 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 557 transitions. [2023-12-02 14:24:48,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-02 14:24:48,449 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:24:48,449 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:24:48,455 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db1fe45a-06f8-40b3-8872-50243d92d47c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 14:24:48,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db1fe45a-06f8-40b3-8872-50243d92d47c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:24:48,650 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:24:48,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:24:48,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1279796883, now seen corresponding path program 1 times [2023-12-02 14:24:48,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:24:48,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218516775] [2023-12-02 14:24:48,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:24:48,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:24:48,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:24:48,814 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 14:24:48,814 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:24:48,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218516775] [2023-12-02 14:24:48,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218516775] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:24:48,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059925380] [2023-12-02 14:24:48,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:24:48,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:24:48,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db1fe45a-06f8-40b3-8872-50243d92d47c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:24:48,816 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db1fe45a-06f8-40b3-8872-50243d92d47c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:24:48,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db1fe45a-06f8-40b3-8872-50243d92d47c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 14:24:49,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:24:49,108 INFO L262 TraceCheckSpWp]: Trace formula consists of 1132 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 14:24:49,121 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:24:49,145 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 14:24:49,145 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:24:49,205 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 14:24:49,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059925380] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:24:49,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2020423103] [2023-12-02 14:24:49,209 INFO L159 IcfgInterpreter]: Started Sifa with 78 locations of interest [2023-12-02 14:24:49,209 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:24:49,210 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:24:49,210 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:24:49,210 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 14:26:12,707 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 223 for LOIs [2023-12-02 14:26:12,867 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 537 for LOIs [2023-12-02 14:26:14,487 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 311 for LOIs [2023-12-02 14:26:14,913 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 218 for LOIs [2023-12-02 14:26:15,122 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 228 for LOIs [2023-12-02 14:26:15,288 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 14:27:09,798 WARN L293 SmtUtils]: Spent 10.61s on a formula simplification. DAG size of input: 574 DAG size of output: 569 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 14:27:38,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [2020423103] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:27:38,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 14:27:38,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [4, 4, 4] total 38 [2023-12-02 14:27:38,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990392819] [2023-12-02 14:27:38,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:27:38,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-02 14:27:38,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:27:38,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-02 14:27:38,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1281, Unknown=0, NotChecked=0, Total=1406 [2023-12-02 14:27:38,240 INFO L87 Difference]: Start difference. First operand 377 states and 557 transitions. Second operand has 33 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 10 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (19), 10 states have call predecessors, (19), 10 states have call successors, (19) [2023-12-02 14:27:42,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 14:28:01,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:28:01,422 INFO L93 Difference]: Finished difference Result 775 states and 1176 transitions. [2023-12-02 14:28:01,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-02 14:28:01,423 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 10 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (19), 10 states have call predecessors, (19), 10 states have call successors, (19) Word has length 93 [2023-12-02 14:28:01,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:28:01,426 INFO L225 Difference]: With dead ends: 775 [2023-12-02 14:28:01,426 INFO L226 Difference]: Without dead ends: 475 [2023-12-02 14:28:01,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 87.2s TimeCoverageRelationStatistics Valid=132, Invalid=1350, Unknown=0, NotChecked=0, Total=1482 [2023-12-02 14:28:01,428 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 94 mSDsluCounter, 3101 mSDsCounter, 0 mSdLazyCounter, 3128 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 3297 SdHoareTripleChecker+Invalid, 3141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 3128 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.5s IncrementalHoareTripleChecker+Time [2023-12-02 14:28:01,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 3297 Invalid, 3141 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12 Valid, 3128 Invalid, 1 Unknown, 0 Unchecked, 18.5s Time] [2023-12-02 14:28:01,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2023-12-02 14:28:01,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 413. [2023-12-02 14:28:01,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 292 states have (on average 1.4452054794520548) internal successors, (422), 295 states have internal predecessors, (422), 92 states have call successors, (92), 28 states have call predecessors, (92), 28 states have return successors, (91), 91 states have call predecessors, (91), 91 states have call successors, (91) [2023-12-02 14:28:01,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 605 transitions. [2023-12-02 14:28:01,563 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 605 transitions. Word has length 93 [2023-12-02 14:28:01,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:28:01,563 INFO L495 AbstractCegarLoop]: Abstraction has 413 states and 605 transitions. [2023-12-02 14:28:01,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 10 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (19), 10 states have call predecessors, (19), 10 states have call successors, (19) [2023-12-02 14:28:01,564 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 605 transitions. [2023-12-02 14:28:01,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-02 14:28:01,566 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:28:01,566 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:28:01,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db1fe45a-06f8-40b3-8872-50243d92d47c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-02 14:28:01,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db1fe45a-06f8-40b3-8872-50243d92d47c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:28:01,767 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:28:01,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:28:01,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1652412569, now seen corresponding path program 1 times [2023-12-02 14:28:01,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:28:01,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316306999] [2023-12-02 14:28:01,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:28:01,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:28:01,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:28:01,889 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 14:28:01,889 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:28:01,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316306999] [2023-12-02 14:28:01,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316306999] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:28:01,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544936057] [2023-12-02 14:28:01,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:28:01,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:28:01,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db1fe45a-06f8-40b3-8872-50243d92d47c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:28:01,891 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db1fe45a-06f8-40b3-8872-50243d92d47c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:28:01,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db1fe45a-06f8-40b3-8872-50243d92d47c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 14:28:02,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:28:02,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 14:28:02,181 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:28:02,208 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 14:28:02,208 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:28:02,279 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 14:28:02,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544936057] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:28:02,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2055812713] [2023-12-02 14:28:02,283 INFO L159 IcfgInterpreter]: Started Sifa with 77 locations of interest [2023-12-02 14:28:02,283 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:28:02,284 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:28:02,284 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:28:02,284 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 14:28:59,092 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 223 for LOIs [2023-12-02 14:28:59,254 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 228 for LOIs [2023-12-02 14:28:59,422 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 14:29:54,983 WARN L293 SmtUtils]: Spent 9.22s on a formula simplification. DAG size of input: 497 DAG size of output: 497 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 14:30:28,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [2055812713] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:30:28,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 14:30:28,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [4, 4, 4] total 37 [2023-12-02 14:30:28,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696580955] [2023-12-02 14:30:28,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:30:28,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-02 14:30:28,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:30:28,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-02 14:30:28,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1158, Unknown=0, NotChecked=0, Total=1332 [2023-12-02 14:30:28,382 INFO L87 Difference]: Start difference. First operand 413 states and 605 transitions. Second operand has 32 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 23 states have internal predecessors, (50), 7 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2023-12-02 14:30:42,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:30:42,236 INFO L93 Difference]: Finished difference Result 781 states and 1179 transitions. [2023-12-02 14:30:42,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-02 14:30:42,236 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 23 states have internal predecessors, (50), 7 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) Word has length 92 [2023-12-02 14:30:42,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:30:42,240 INFO L225 Difference]: With dead ends: 781 [2023-12-02 14:30:42,240 INFO L226 Difference]: Without dead ends: 481 [2023-12-02 14:30:42,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 93.0s TimeCoverageRelationStatistics Valid=185, Invalid=1221, Unknown=0, NotChecked=0, Total=1406 [2023-12-02 14:30:42,242 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 89 mSDsluCounter, 2764 mSDsCounter, 0 mSdLazyCounter, 2165 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 2954 SdHoareTripleChecker+Invalid, 2177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2023-12-02 14:30:42,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 2954 Invalid, 2177 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12 Valid, 2165 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2023-12-02 14:30:42,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2023-12-02 14:30:42,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 433. [2023-12-02 14:30:42,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 312 states have (on average 1.4487179487179487) internal successors, (452), 315 states have internal predecessors, (452), 92 states have call successors, (92), 28 states have call predecessors, (92), 28 states have return successors, (91), 91 states have call predecessors, (91), 91 states have call successors, (91) [2023-12-02 14:30:42,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 635 transitions. [2023-12-02 14:30:42,392 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 635 transitions. Word has length 92 [2023-12-02 14:30:42,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:30:42,393 INFO L495 AbstractCegarLoop]: Abstraction has 433 states and 635 transitions. [2023-12-02 14:30:42,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 23 states have internal predecessors, (50), 7 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2023-12-02 14:30:42,393 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 635 transitions. [2023-12-02 14:30:42,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-02 14:30:42,396 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:30:42,396 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:30:42,404 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db1fe45a-06f8-40b3-8872-50243d92d47c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 14:30:42,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db1fe45a-06f8-40b3-8872-50243d92d47c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:30:42,604 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:30:42,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:30:42,604 INFO L85 PathProgramCache]: Analyzing trace with hash 962441195, now seen corresponding path program 1 times [2023-12-02 14:30:42,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:30:42,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639806194] [2023-12-02 14:30:42,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:30:42,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:30:42,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:30:43,370 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-02 14:30:43,370 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:30:43,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639806194] [2023-12-02 14:30:43,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639806194] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:30:43,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:30:43,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-12-02 14:30:43,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089038511] [2023-12-02 14:30:43,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:30:43,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-02 14:30:43,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:30:43,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-02 14:30:43,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2023-12-02 14:30:43,372 INFO L87 Difference]: Start difference. First operand 433 states and 635 transitions. Second operand has 19 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 16 states have internal predecessors, (46), 10 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 9 states have call predecessors, (17), 9 states have call successors, (17) [2023-12-02 14:30:44,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:30:44,914 INFO L93 Difference]: Finished difference Result 581 states and 828 transitions. [2023-12-02 14:30:44,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-02 14:30:44,915 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 16 states have internal predecessors, (46), 10 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 9 states have call predecessors, (17), 9 states have call successors, (17) Word has length 95 [2023-12-02 14:30:44,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:30:44,919 INFO L225 Difference]: With dead ends: 581 [2023-12-02 14:30:44,919 INFO L226 Difference]: Without dead ends: 555 [2023-12-02 14:30:44,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=174, Invalid=948, Unknown=0, NotChecked=0, Total=1122 [2023-12-02 14:30:44,921 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 496 mSDsluCounter, 2191 mSDsCounter, 0 mSdLazyCounter, 2229 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 520 SdHoareTripleChecker+Valid, 2416 SdHoareTripleChecker+Invalid, 2376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 2229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:30:44,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [520 Valid, 2416 Invalid, 2376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 2229 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 14:30:44,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2023-12-02 14:30:45,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 547. [2023-12-02 14:30:45,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 380 states have (on average 1.4) internal successors, (532), 383 states have internal predecessors, (532), 123 states have call successors, (123), 43 states have call predecessors, (123), 43 states have return successors, (123), 122 states have call predecessors, (123), 121 states have call successors, (123) [2023-12-02 14:30:45,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 778 transitions. [2023-12-02 14:30:45,078 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 778 transitions. Word has length 95 [2023-12-02 14:30:45,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:30:45,079 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 778 transitions. [2023-12-02 14:30:45,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 16 states have internal predecessors, (46), 10 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 9 states have call predecessors, (17), 9 states have call successors, (17) [2023-12-02 14:30:45,079 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 778 transitions. [2023-12-02 14:30:45,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-02 14:30:45,080 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:30:45,080 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:30:45,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-02 14:30:45,081 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:30:45,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:30:45,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1471470316, now seen corresponding path program 1 times [2023-12-02 14:30:45,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:30:45,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033262554] [2023-12-02 14:30:45,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:30:45,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:30:45,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:30:45,229 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 14:30:45,229 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:30:45,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033262554] [2023-12-02 14:30:45,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033262554] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:30:45,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414821257] [2023-12-02 14:30:45,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:30:45,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:30:45,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db1fe45a-06f8-40b3-8872-50243d92d47c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:30:45,231 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db1fe45a-06f8-40b3-8872-50243d92d47c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:30:45,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db1fe45a-06f8-40b3-8872-50243d92d47c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 14:30:45,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:30:45,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 1102 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 14:30:45,508 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:30:45,529 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 14:30:45,529 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:30:45,582 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 14:30:45,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414821257] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:30:45,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [192156306] [2023-12-02 14:30:45,586 INFO L159 IcfgInterpreter]: Started Sifa with 79 locations of interest [2023-12-02 14:30:45,586 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:30:45,586 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:30:45,587 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:30:45,587 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 14:31:41,104 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 223 for LOIs [2023-12-02 14:31:41,275 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 472 for LOIs [2023-12-02 14:31:43,339 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 14:32:04,237 WARN L293 SmtUtils]: Spent 6.49s on a formula simplification. DAG size of input: 472 DAG size of output: 472 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 14:32:14,125 WARN L293 SmtUtils]: Spent 9.69s on a formula simplification. DAG size of input: 502 DAG size of output: 498 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 14:33:03,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [192156306] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:33:03,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 14:33:03,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [5, 5, 5] total 33 [2023-12-02 14:33:03,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254717210] [2023-12-02 14:33:03,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:33:03,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-02 14:33:03,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:33:03,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-02 14:33:03,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=942, Unknown=0, NotChecked=0, Total=1056 [2023-12-02 14:33:03,121 INFO L87 Difference]: Start difference. First operand 547 states and 778 transitions. Second operand has 28 states, 19 states have (on average 2.526315789473684) internal successors, (48), 18 states have internal predecessors, (48), 8 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 8 states have call predecessors, (19), 8 states have call successors, (19) [2023-12-02 14:33:18,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:33:18,345 INFO L93 Difference]: Finished difference Result 1083 states and 1587 transitions. [2023-12-02 14:33:18,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-02 14:33:18,347 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 19 states have (on average 2.526315789473684) internal successors, (48), 18 states have internal predecessors, (48), 8 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 8 states have call predecessors, (19), 8 states have call successors, (19) Word has length 101 [2023-12-02 14:33:18,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:33:18,350 INFO L225 Difference]: With dead ends: 1083 [2023-12-02 14:33:18,351 INFO L226 Difference]: Without dead ends: 669 [2023-12-02 14:33:18,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 273 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 81.1s TimeCoverageRelationStatistics Valid=125, Invalid=997, Unknown=0, NotChecked=0, Total=1122 [2023-12-02 14:33:18,353 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 133 mSDsluCounter, 3246 mSDsCounter, 0 mSdLazyCounter, 2890 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 3478 SdHoareTripleChecker+Invalid, 2923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 2890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2023-12-02 14:33:18,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 3478 Invalid, 2923 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [33 Valid, 2890 Invalid, 0 Unknown, 0 Unchecked, 13.4s Time] [2023-12-02 14:33:18,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2023-12-02 14:33:18,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 565. [2023-12-02 14:33:18,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 395 states have (on average 1.4) internal successors, (553), 398 states have internal predecessors, (553), 125 states have call successors, (125), 44 states have call predecessors, (125), 44 states have return successors, (125), 124 states have call predecessors, (125), 123 states have call successors, (125) [2023-12-02 14:33:18,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 803 transitions. [2023-12-02 14:33:18,534 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 803 transitions. Word has length 101 [2023-12-02 14:33:18,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:33:18,535 INFO L495 AbstractCegarLoop]: Abstraction has 565 states and 803 transitions. [2023-12-02 14:33:18,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 19 states have (on average 2.526315789473684) internal successors, (48), 18 states have internal predecessors, (48), 8 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 8 states have call predecessors, (19), 8 states have call successors, (19) [2023-12-02 14:33:18,535 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 803 transitions. [2023-12-02 14:33:18,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-02 14:33:18,537 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:33:18,537 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:33:18,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db1fe45a-06f8-40b3-8872-50243d92d47c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-02 14:33:18,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db1fe45a-06f8-40b3-8872-50243d92d47c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-02 14:33:18,738 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 14:33:18,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:33:18,738 INFO L85 PathProgramCache]: Analyzing trace with hash -477219822, now seen corresponding path program 1 times [2023-12-02 14:33:18,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:33:18,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768245217] [2023-12-02 14:33:18,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:33:18,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:33:18,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:33:18,899 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 14:33:18,899 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:33:18,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768245217] [2023-12-02 14:33:18,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768245217] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:33:18,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30875821] [2023-12-02 14:33:18,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:33:18,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:33:18,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db1fe45a-06f8-40b3-8872-50243d92d47c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:33:18,901 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db1fe45a-06f8-40b3-8872-50243d92d47c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:33:18,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db1fe45a-06f8-40b3-8872-50243d92d47c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 14:33:19,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:33:19,201 INFO L262 TraceCheckSpWp]: Trace formula consists of 1107 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 14:33:19,204 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:33:19,233 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 14:33:19,233 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:33:19,300 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 14:33:19,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30875821] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:33:19,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [531628651] [2023-12-02 14:33:19,304 INFO L159 IcfgInterpreter]: Started Sifa with 79 locations of interest [2023-12-02 14:33:19,304 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:33:19,305 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:33:19,305 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:33:19,305 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs