./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec3_product17.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c26c6a2-66ad-448a-8503-a58dd63df9c9/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c26c6a2-66ad-448a-8503-a58dd63df9c9/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_0c26c6a2-66ad-448a-8503-a58dd63df9c9/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c26c6a2-66ad-448a-8503-a58dd63df9c9/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec3_product17.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c26c6a2-66ad-448a-8503-a58dd63df9c9/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_0c26c6a2-66ad-448a-8503-a58dd63df9c9/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 ece4fa184f09e2184919c279a0198f8db6972fb16f8b142297bd588b2043b23f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 19:24:35,317 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 19:24:35,398 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c26c6a2-66ad-448a-8503-a58dd63df9c9/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 19:24:35,404 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 19:24:35,405 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 19:24:35,437 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 19:24:35,438 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 19:24:35,439 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 19:24:35,440 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 19:24:35,440 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 19:24:35,441 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 19:24:35,442 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 19:24:35,442 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 19:24:35,443 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 19:24:35,444 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 19:24:35,444 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 19:24:35,445 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 19:24:35,446 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 19:24:35,446 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 19:24:35,447 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 19:24:35,448 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 19:24:35,448 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 19:24:35,449 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 19:24:35,450 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 19:24:35,451 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 19:24:35,451 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 19:24:35,452 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 19:24:35,452 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 19:24:35,453 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 19:24:35,453 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 19:24:35,454 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 19:24:35,454 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 19:24:35,455 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 19:24:35,455 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 19:24:35,455 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 19:24:35,456 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 19:24:35,456 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 19:24:35,456 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:24:35,456 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 19:24:35,457 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 19:24:35,457 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 19:24:35,457 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 19:24:35,458 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 19:24:35,458 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 19:24:35,458 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 19:24:35,458 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 19:24:35,458 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 19:24:35,459 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_0c26c6a2-66ad-448a-8503-a58dd63df9c9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c26c6a2-66ad-448a-8503-a58dd63df9c9/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ece4fa184f09e2184919c279a0198f8db6972fb16f8b142297bd588b2043b23f [2023-12-02 19:24:35,712 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 19:24:35,737 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 19:24:35,740 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 19:24:35,742 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 19:24:35,742 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 19:24:35,744 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c26c6a2-66ad-448a-8503-a58dd63df9c9/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/product-lines/email_spec3_product17.cil.c [2023-12-02 19:24:39,107 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 19:24:39,426 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 19:24:39,426 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c26c6a2-66ad-448a-8503-a58dd63df9c9/sv-benchmarks/c/product-lines/email_spec3_product17.cil.c [2023-12-02 19:24:39,452 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c26c6a2-66ad-448a-8503-a58dd63df9c9/bin/utaipan-verify-nQ1chXbOIh/data/72f821996/9d29a1597c3b45569c7586141ec91368/FLAGb10f56373 [2023-12-02 19:24:39,471 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c26c6a2-66ad-448a-8503-a58dd63df9c9/bin/utaipan-verify-nQ1chXbOIh/data/72f821996/9d29a1597c3b45569c7586141ec91368 [2023-12-02 19:24:39,474 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 19:24:39,476 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 19:24:39,478 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 19:24:39,478 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 19:24:39,485 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 19:24:39,486 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:24:39" (1/1) ... [2023-12-02 19:24:39,487 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6154dafc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:24:39, skipping insertion in model container [2023-12-02 19:24:39,487 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:24:39" (1/1) ... [2023-12-02 19:24:39,580 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 19:24:40,152 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_0c26c6a2-66ad-448a-8503-a58dd63df9c9/sv-benchmarks/c/product-lines/email_spec3_product17.cil.c[63718,63731] [2023-12-02 19:24:40,158 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:24:40,177 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 19:24:40,187 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [48] [2023-12-02 19:24:40,189 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [368] [2023-12-02 19:24:40,189 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [403] [2023-12-02 19:24:40,189 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [769] [2023-12-02 19:24:40,189 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [985] [2023-12-02 19:24:40,189 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [1304] [2023-12-02 19:24:40,190 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"SignVerify_spec.i","") [1321] [2023-12-02 19:24:40,190 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [1380] [2023-12-02 19:24:40,190 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [2444] [2023-12-02 19:24:40,190 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [2543] [2023-12-02 19:24:40,191 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2944] [2023-12-02 19:24:40,297 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_0c26c6a2-66ad-448a-8503-a58dd63df9c9/sv-benchmarks/c/product-lines/email_spec3_product17.cil.c[63718,63731] [2023-12-02 19:24:40,297 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:24:40,328 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 19:24:40,368 INFO L206 MainTranslator]: Completed translation [2023-12-02 19:24:40,369 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:24:40 WrapperNode [2023-12-02 19:24:40,369 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 19:24:40,370 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 19:24:40,370 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 19:24:40,370 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 19:24:40,377 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:24:40" (1/1) ... [2023-12-02 19:24:40,410 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:24:40" (1/1) ... [2023-12-02 19:24:40,485 INFO L138 Inliner]: procedures = 128, calls = 217, calls flagged for inlining = 52, calls inlined = 45, statements flattened = 920 [2023-12-02 19:24:40,486 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 19:24:40,487 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 19:24:40,487 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 19:24:40,487 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 19:24:40,500 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:24:40" (1/1) ... [2023-12-02 19:24:40,500 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:24:40" (1/1) ... [2023-12-02 19:24:40,508 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:24:40" (1/1) ... [2023-12-02 19:24:40,508 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:24:40" (1/1) ... [2023-12-02 19:24:40,529 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:24:40" (1/1) ... [2023-12-02 19:24:40,540 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:24:40" (1/1) ... [2023-12-02 19:24:40,546 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:24:40" (1/1) ... [2023-12-02 19:24:40,551 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:24:40" (1/1) ... [2023-12-02 19:24:40,561 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 19:24:40,563 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 19:24:40,563 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 19:24:40,563 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 19:24:40,564 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:24:40" (1/1) ... [2023-12-02 19:24:40,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:24:40,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c26c6a2-66ad-448a-8503-a58dd63df9c9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:24:40,605 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c26c6a2-66ad-448a-8503-a58dd63df9c9/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 19:24:40,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c26c6a2-66ad-448a-8503-a58dd63df9c9/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 19:24:40,642 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2023-12-02 19:24:40,642 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2023-12-02 19:24:40,643 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2023-12-02 19:24:40,643 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2023-12-02 19:24:40,643 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2023-12-02 19:24:40,643 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2023-12-02 19:24:40,644 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-12-02 19:24:40,644 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-12-02 19:24:40,644 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-12-02 19:24:40,644 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-12-02 19:24:40,644 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-12-02 19:24:40,645 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-12-02 19:24:40,645 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-12-02 19:24:40,645 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-12-02 19:24:40,645 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2023-12-02 19:24:40,645 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2023-12-02 19:24:40,646 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-12-02 19:24:40,646 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-12-02 19:24:40,646 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2023-12-02 19:24:40,646 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-12-02 19:24:40,646 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-12-02 19:24:40,647 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-12-02 19:24:40,647 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-12-02 19:24:40,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 19:24:40,647 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2023-12-02 19:24:40,648 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2023-12-02 19:24:40,648 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2023-12-02 19:24:40,648 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2023-12-02 19:24:40,648 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2023-12-02 19:24:40,648 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2023-12-02 19:24:40,648 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-12-02 19:24:40,649 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-12-02 19:24:40,649 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-12-02 19:24:40,649 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-12-02 19:24:40,649 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-12-02 19:24:40,649 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-12-02 19:24:40,650 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-12-02 19:24:40,650 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-12-02 19:24:40,650 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2023-12-02 19:24:40,650 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2023-12-02 19:24:40,650 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-12-02 19:24:40,650 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-12-02 19:24:40,650 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-12-02 19:24:40,651 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-12-02 19:24:40,651 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2023-12-02 19:24:40,651 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2023-12-02 19:24:40,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 19:24:40,651 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-12-02 19:24:40,651 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-12-02 19:24:40,652 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2023-12-02 19:24:40,652 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2023-12-02 19:24:40,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 19:24:40,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 19:24:40,866 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 19:24:40,869 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 19:24:41,771 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 19:24:42,455 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 19:24:42,455 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 19:24:42,457 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:24:42 BoogieIcfgContainer [2023-12-02 19:24:42,457 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 19:24:42,460 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 19:24:42,460 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 19:24:42,464 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 19:24:42,464 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:24:39" (1/3) ... [2023-12-02 19:24:42,465 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7283d55b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:24:42, skipping insertion in model container [2023-12-02 19:24:42,465 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:24:40" (2/3) ... [2023-12-02 19:24:42,466 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7283d55b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:24:42, skipping insertion in model container [2023-12-02 19:24:42,466 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:24:42" (3/3) ... [2023-12-02 19:24:42,467 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec3_product17.cil.c [2023-12-02 19:24:42,493 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 19:24:42,493 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 19:24:42,562 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 19:24:42,571 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;@5e924e84, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 19:24:42,571 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 19:24:42,578 INFO L276 IsEmpty]: Start isEmpty. Operand has 187 states, 105 states have (on average 1.3238095238095238) internal successors, (139), 110 states have internal predecessors, (139), 56 states have call successors, (56), 24 states have call predecessors, (56), 24 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-02 19:24:42,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-02 19:24:42,592 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:24:42,593 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:24:42,594 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:24:42,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:24:42,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1879759984, now seen corresponding path program 1 times [2023-12-02 19:24:42,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:24:42,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436728794] [2023-12-02 19:24:42,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:24:42,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:24:42,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:24:42,972 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 19:24:42,972 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:24:42,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436728794] [2023-12-02 19:24:42,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436728794] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:24:42,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:24:42,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 19:24:42,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105314815] [2023-12-02 19:24:42,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:24:42,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 19:24:42,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:24:43,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 19:24:43,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 19:24:43,016 INFO L87 Difference]: Start difference. First operand has 187 states, 105 states have (on average 1.3238095238095238) internal successors, (139), 110 states have internal predecessors, (139), 56 states have call successors, (56), 24 states have call predecessors, (56), 24 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) Second operand has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-02 19:24:43,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:24:43,157 INFO L93 Difference]: Finished difference Result 281 states and 373 transitions. [2023-12-02 19:24:43,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 19:24:43,161 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 70 [2023-12-02 19:24:43,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:24:43,174 INFO L225 Difference]: With dead ends: 281 [2023-12-02 19:24:43,175 INFO L226 Difference]: Without dead ends: 183 [2023-12-02 19:24:43,180 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 19:24:43,184 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 19:24:43,185 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 19:24:43,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2023-12-02 19:24:43,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2023-12-02 19:24:43,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 103 states have (on average 1.2912621359223302) internal successors, (133), 106 states have internal predecessors, (133), 56 states have call successors, (56), 24 states have call predecessors, (56), 23 states have return successors, (53), 52 states have call predecessors, (53), 53 states have call successors, (53) [2023-12-02 19:24:43,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 242 transitions. [2023-12-02 19:24:43,251 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 242 transitions. Word has length 70 [2023-12-02 19:24:43,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:24:43,253 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 242 transitions. [2023-12-02 19:24:43,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-02 19:24:43,254 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 242 transitions. [2023-12-02 19:24:43,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-02 19:24:43,260 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:24:43,260 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:24:43,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 19:24:43,261 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:24:43,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:24:43,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1231490475, now seen corresponding path program 1 times [2023-12-02 19:24:43,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:24:43,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417142656] [2023-12-02 19:24:43,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:24:43,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:24:43,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:24:43,489 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 19:24:43,490 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:24:43,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417142656] [2023-12-02 19:24:43,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417142656] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:24:43,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:24:43,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:24:43,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312182675] [2023-12-02 19:24:43,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:24:43,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:24:43,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:24:43,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:24:43,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:24:43,495 INFO L87 Difference]: Start difference. First operand 183 states and 242 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-02 19:24:43,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:24:43,630 INFO L93 Difference]: Finished difference Result 276 states and 354 transitions. [2023-12-02 19:24:43,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:24:43,631 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 71 [2023-12-02 19:24:43,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:24:43,635 INFO L225 Difference]: With dead ends: 276 [2023-12-02 19:24:43,635 INFO L226 Difference]: Without dead ends: 185 [2023-12-02 19:24:43,637 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 19:24:43,639 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 19:24:43,639 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 19:24:43,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2023-12-02 19:24:43,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2023-12-02 19:24:43,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 105 states have (on average 1.2857142857142858) internal successors, (135), 108 states have internal predecessors, (135), 56 states have call successors, (56), 24 states have call predecessors, (56), 23 states have return successors, (53), 52 states have call predecessors, (53), 53 states have call successors, (53) [2023-12-02 19:24:43,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 244 transitions. [2023-12-02 19:24:43,665 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 244 transitions. Word has length 71 [2023-12-02 19:24:43,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:24:43,665 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 244 transitions. [2023-12-02 19:24:43,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-02 19:24:43,666 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 244 transitions. [2023-12-02 19:24:43,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-02 19:24:43,670 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:24:43,670 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:24:43,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 19:24:43,671 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:24:43,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:24:43,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1896823848, now seen corresponding path program 1 times [2023-12-02 19:24:43,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:24:43,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658528578] [2023-12-02 19:24:43,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:24:43,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:24:43,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:24:43,852 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 19:24:43,852 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:24:43,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658528578] [2023-12-02 19:24:43,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658528578] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:24:43,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:24:43,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:24:43,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536650443] [2023-12-02 19:24:43,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:24:43,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:24:43,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:24:43,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:24:43,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:24:43,856 INFO L87 Difference]: Start difference. First operand 185 states and 244 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-02 19:24:44,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:24:44,001 INFO L93 Difference]: Finished difference Result 405 states and 555 transitions. [2023-12-02 19:24:44,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:24:44,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 76 [2023-12-02 19:24:44,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:24:44,005 INFO L225 Difference]: With dead ends: 405 [2023-12-02 19:24:44,006 INFO L226 Difference]: Without dead ends: 238 [2023-12-02 19:24:44,007 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 19:24:44,009 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 59 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 428 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 19:24:44,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 428 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:24:44,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-12-02 19:24:44,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 233. [2023-12-02 19:24:44,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 139 states have (on average 1.3669064748201438) internal successors, (190), 142 states have internal predecessors, (190), 70 states have call successors, (70), 24 states have call predecessors, (70), 23 states have return successors, (67), 66 states have call predecessors, (67), 67 states have call successors, (67) [2023-12-02 19:24:44,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 327 transitions. [2023-12-02 19:24:44,039 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 327 transitions. Word has length 76 [2023-12-02 19:24:44,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:24:44,039 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 327 transitions. [2023-12-02 19:24:44,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-02 19:24:44,040 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 327 transitions. [2023-12-02 19:24:44,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-02 19:24:44,044 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:24:44,044 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:24:44,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 19:24:44,044 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:24:44,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:24:44,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1847708386, now seen corresponding path program 1 times [2023-12-02 19:24:44,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:24:44,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139954889] [2023-12-02 19:24:44,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:24:44,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:24:44,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:24:44,237 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 19:24:44,237 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:24:44,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139954889] [2023-12-02 19:24:44,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139954889] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:24:44,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695171543] [2023-12-02 19:24:44,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:24:44,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:24:44,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c26c6a2-66ad-448a-8503-a58dd63df9c9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:24:44,240 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c26c6a2-66ad-448a-8503-a58dd63df9c9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:24:44,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c26c6a2-66ad-448a-8503-a58dd63df9c9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 19:24:44,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:24:44,651 INFO L262 TraceCheckSpWp]: Trace formula consists of 996 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 19:24:44,662 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:24:44,740 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 19:24:44,740 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:24:44,820 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 19:24:44,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695171543] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:24:44,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2032316199] [2023-12-02 19:24:44,849 INFO L159 IcfgInterpreter]: Started Sifa with 66 locations of interest [2023-12-02 19:24:44,850 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:24:44,855 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:24:44,862 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:24:44,862 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:25:32,220 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 226 for LOIs [2023-12-02 19:25:32,379 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 228 for LOIs [2023-12-02 19:25:32,538 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:26:29,471 WARN L293 SmtUtils]: Spent 9.74s on a formula simplification. DAG size of input: 507 DAG size of output: 507 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 19:26:44,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [2032316199] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:26:44,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 19:26:44,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [4, 4, 4] total 29 [2023-12-02 19:26:44,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061272433] [2023-12-02 19:26:44,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:26:44,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-02 19:26:44,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:26:44,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-02 19:26:44,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=725, Unknown=0, NotChecked=0, Total=812 [2023-12-02 19:26:44,338 INFO L87 Difference]: Start difference. First operand 233 states and 327 transitions. Second operand has 24 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 7 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2023-12-02 19:26:55,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:26:55,306 INFO L93 Difference]: Finished difference Result 513 states and 754 transitions. [2023-12-02 19:26:55,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-02 19:26:55,307 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 7 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) Word has length 77 [2023-12-02 19:26:55,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:26:55,310 INFO L225 Difference]: With dead ends: 513 [2023-12-02 19:26:55,310 INFO L226 Difference]: Without dead ends: 298 [2023-12-02 19:26:55,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 71.8s TimeCoverageRelationStatistics Valid=87, Invalid=725, Unknown=0, NotChecked=0, Total=812 [2023-12-02 19:26:55,312 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 58 mSDsluCounter, 3060 mSDsCounter, 0 mSdLazyCounter, 2440 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 3285 SdHoareTripleChecker+Invalid, 2449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2023-12-02 19:26:55,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 3285 Invalid, 2449 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 2440 Invalid, 0 Unknown, 0 Unchecked, 10.7s Time] [2023-12-02 19:26:55,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2023-12-02 19:26:55,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 256. [2023-12-02 19:26:55,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 161 states have (on average 1.3850931677018634) internal successors, (223), 164 states have internal predecessors, (223), 70 states have call successors, (70), 25 states have call predecessors, (70), 24 states have return successors, (67), 66 states have call predecessors, (67), 67 states have call successors, (67) [2023-12-02 19:26:55,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 360 transitions. [2023-12-02 19:26:55,393 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 360 transitions. Word has length 77 [2023-12-02 19:26:55,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:26:55,394 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 360 transitions. [2023-12-02 19:26:55,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 7 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2023-12-02 19:26:55,395 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 360 transitions. [2023-12-02 19:26:55,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-02 19:26:55,398 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:26:55,398 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:26:55,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c26c6a2-66ad-448a-8503-a58dd63df9c9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 19:26:55,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c26c6a2-66ad-448a-8503-a58dd63df9c9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:26:55,608 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:26:55,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:26:55,608 INFO L85 PathProgramCache]: Analyzing trace with hash 285969170, now seen corresponding path program 1 times [2023-12-02 19:26:55,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:26:55,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942194754] [2023-12-02 19:26:55,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:26:55,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:26:55,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:26:55,706 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 19:26:55,706 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:26:55,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942194754] [2023-12-02 19:26:55,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942194754] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:26:55,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:26:55,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:26:55,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847807944] [2023-12-02 19:26:55,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:26:55,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:26:55,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:26:55,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:26:55,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:26:55,709 INFO L87 Difference]: Start difference. First operand 256 states and 360 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, (19), 2 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-02 19:26:55,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:26:55,910 INFO L93 Difference]: Finished difference Result 615 states and 900 transitions. [2023-12-02 19:26:55,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:26:55,910 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, (19), 2 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 82 [2023-12-02 19:26:55,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:26:55,914 INFO L225 Difference]: With dead ends: 615 [2023-12-02 19:26:55,914 INFO L226 Difference]: Without dead ends: 383 [2023-12-02 19:26:55,915 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 19:26:55,916 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 57 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:26:55,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 421 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:26:55,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2023-12-02 19:26:56,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 378. [2023-12-02 19:26:56,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 252 states have (on average 1.4404761904761905) internal successors, (363), 255 states have internal predecessors, (363), 101 states have call successors, (101), 25 states have call predecessors, (101), 24 states have return successors, (98), 97 states have call predecessors, (98), 98 states have call successors, (98) [2023-12-02 19:26:56,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 562 transitions. [2023-12-02 19:26:56,031 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 562 transitions. Word has length 82 [2023-12-02 19:26:56,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:26:56,031 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 562 transitions. [2023-12-02 19:26:56,031 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, (19), 2 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-02 19:26:56,032 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 562 transitions. [2023-12-02 19:26:56,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-02 19:26:56,034 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:26:56,035 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:26:56,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 19:26:56,035 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:26:56,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:26:56,035 INFO L85 PathProgramCache]: Analyzing trace with hash 784558245, now seen corresponding path program 1 times [2023-12-02 19:26:56,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:26:56,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336421622] [2023-12-02 19:26:56,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:26:56,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:26:56,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:26:56,190 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 19:26:56,191 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:26:56,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336421622] [2023-12-02 19:26:56,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336421622] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:26:56,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833051910] [2023-12-02 19:26:56,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:26:56,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:26:56,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c26c6a2-66ad-448a-8503-a58dd63df9c9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:26:56,195 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c26c6a2-66ad-448a-8503-a58dd63df9c9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:26:56,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c26c6a2-66ad-448a-8503-a58dd63df9c9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 19:26:56,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:26:56,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 1024 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 19:26:56,511 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:26:56,542 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 19:26:56,543 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:26:56,623 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 19:26:56,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833051910] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:26:56,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [354163985] [2023-12-02 19:26:56,632 INFO L159 IcfgInterpreter]: Started Sifa with 70 locations of interest [2023-12-02 19:26:56,633 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:26:56,634 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:26:56,634 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:26:56,634 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:27:57,489 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 226 for LOIs [2023-12-02 19:27:57,652 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 488 for LOIs [2023-12-02 19:27:59,845 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:28:21,836 WARN L293 SmtUtils]: Spent 6.59s on a formula simplification. DAG size of input: 488 DAG size of output: 489 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 19:28:31,938 WARN L293 SmtUtils]: Spent 9.82s on a formula simplification. DAG size of input: 518 DAG size of output: 513 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 19:29:13,146 WARN L293 SmtUtils]: Spent 9.70s on a formula simplification. DAG size of input: 511 DAG size of output: 511 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 19:29:44,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [354163985] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:29:44,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 19:29:44,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [4, 4, 4] total 33 [2023-12-02 19:29:44,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899109169] [2023-12-02 19:29:44,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:29:44,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-02 19:29:44,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:29:44,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-02 19:29:44,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=940, Unknown=0, NotChecked=0, Total=1056 [2023-12-02 19:29:44,059 INFO L87 Difference]: Start difference. First operand 378 states and 562 transitions. Second operand has 28 states, 19 states have (on average 2.210526315789474) internal successors, (42), 18 states have internal predecessors, (42), 8 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2023-12-02 19:29:57,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:29:57,756 INFO L93 Difference]: Finished difference Result 774 states and 1181 transitions. [2023-12-02 19:29:57,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-02 19:29:57,757 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 19 states have (on average 2.210526315789474) internal successors, (42), 18 states have internal predecessors, (42), 8 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) Word has length 83 [2023-12-02 19:29:57,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:29:57,761 INFO L225 Difference]: With dead ends: 774 [2023-12-02 19:29:57,761 INFO L226 Difference]: Without dead ends: 459 [2023-12-02 19:29:57,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 104.2s TimeCoverageRelationStatistics Valid=116, Invalid=940, Unknown=0, NotChecked=0, Total=1056 [2023-12-02 19:29:57,764 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 176 mSDsluCounter, 2724 mSDsCounter, 0 mSdLazyCounter, 2451 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 2919 SdHoareTripleChecker+Invalid, 2459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 2451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:29:57,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 2919 Invalid, 2459 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 2451 Invalid, 0 Unknown, 0 Unchecked, 13.4s Time] [2023-12-02 19:29:57,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2023-12-02 19:29:57,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 392. [2023-12-02 19:29:57,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 264 states have (on average 1.4393939393939394) internal successors, (380), 267 states have internal predecessors, (380), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (99), 98 states have call predecessors, (99), 99 states have call successors, (99) [2023-12-02 19:29:57,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 581 transitions. [2023-12-02 19:29:57,888 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 581 transitions. Word has length 83 [2023-12-02 19:29:57,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:29:57,888 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 581 transitions. [2023-12-02 19:29:57,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 19 states have (on average 2.210526315789474) internal successors, (42), 18 states have internal predecessors, (42), 8 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2023-12-02 19:29:57,889 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 581 transitions. [2023-12-02 19:29:57,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-02 19:29:57,891 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:29:57,892 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:29:57,897 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c26c6a2-66ad-448a-8503-a58dd63df9c9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 19:29:58,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c26c6a2-66ad-448a-8503-a58dd63df9c9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:29:58,092 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:29:58,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:29:58,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1122961813, now seen corresponding path program 1 times [2023-12-02 19:29:58,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:29:58,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294226943] [2023-12-02 19:29:58,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:29:58,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:29:58,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:29:58,236 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 19:29:58,237 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:29:58,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294226943] [2023-12-02 19:29:58,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294226943] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:29:58,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501686060] [2023-12-02 19:29:58,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:29:58,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:29:58,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c26c6a2-66ad-448a-8503-a58dd63df9c9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:29:58,238 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c26c6a2-66ad-448a-8503-a58dd63df9c9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:29:58,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c26c6a2-66ad-448a-8503-a58dd63df9c9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 19:29:58,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:29:58,566 INFO L262 TraceCheckSpWp]: Trace formula consists of 1102 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 19:29:58,572 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:29:58,596 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 19:29:58,596 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:29:58,659 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 19:29:58,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501686060] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:29:58,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [379174337] [2023-12-02 19:29:58,663 INFO L159 IcfgInterpreter]: Started Sifa with 75 locations of interest [2023-12-02 19:29:58,664 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:29:58,664 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:29:58,665 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:29:58,665 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:31:21,518 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 226 for LOIs [2023-12-02 19:31:21,676 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 547 for LOIs [2023-12-02 19:31:23,534 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 235 for LOIs [2023-12-02 19:31:23,788 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 479 for LOIs [2023-12-02 19:31:24,411 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 228 for LOIs [2023-12-02 19:31:24,570 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:32:23,889 WARN L293 SmtUtils]: Spent 11.44s on a formula simplification. DAG size of input: 584 DAG size of output: 579 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 19:32:35,759 WARN L293 SmtUtils]: Spent 11.45s on a formula simplification. DAG size of input: 584 DAG size of output: 579 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 19:33:13,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [379174337] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:33:13,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 19:33:13,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [4, 4, 4] total 37 [2023-12-02 19:33:13,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531623075] [2023-12-02 19:33:13,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:33:13,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-02 19:33:13,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:33:13,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-02 19:33:13,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1221, Unknown=0, NotChecked=0, Total=1332 [2023-12-02 19:33:13,572 INFO L87 Difference]: Start difference. First operand 392 states and 581 transitions. Second operand has 32 states, 19 states have (on average 2.210526315789474) internal successors, (42), 18 states have internal predecessors, (42), 10 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) [2023-12-02 19:33:34,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:33:34,159 INFO L93 Difference]: Finished difference Result 803 states and 1222 transitions. [2023-12-02 19:33:34,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-02 19:33:34,160 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 19 states have (on average 2.210526315789474) internal successors, (42), 18 states have internal predecessors, (42), 10 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) Word has length 86 [2023-12-02 19:33:34,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:33:34,164 INFO L225 Difference]: With dead ends: 803 [2023-12-02 19:33:34,164 INFO L226 Difference]: Without dead ends: 488 [2023-12-02 19:33:34,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 109.0s TimeCoverageRelationStatistics Valid=111, Invalid=1221, Unknown=0, NotChecked=0, Total=1332 [2023-12-02 19:33:34,166 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 92 mSDsluCounter, 3416 mSDsCounter, 0 mSdLazyCounter, 3486 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 3610 SdHoareTripleChecker+Invalid, 3497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 3486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:33:34,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 3610 Invalid, 3497 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 3486 Invalid, 0 Unknown, 0 Unchecked, 20.2s Time] [2023-12-02 19:33:34,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2023-12-02 19:33:34,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 428. [2023-12-02 19:33:34,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 294 states have (on average 1.435374149659864) internal successors, (422), 297 states have internal predecessors, (422), 105 states have call successors, (105), 29 states have call predecessors, (105), 28 states have return successors, (102), 101 states have call predecessors, (102), 102 states have call successors, (102) [2023-12-02 19:33:34,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 629 transitions. [2023-12-02 19:33:34,353 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 629 transitions. Word has length 86 [2023-12-02 19:33:34,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:33:34,354 INFO L495 AbstractCegarLoop]: Abstraction has 428 states and 629 transitions. [2023-12-02 19:33:34,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 19 states have (on average 2.210526315789474) internal successors, (42), 18 states have internal predecessors, (42), 10 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) [2023-12-02 19:33:34,354 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 629 transitions. [2023-12-02 19:33:34,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-02 19:33:34,356 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:33:34,356 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:33:34,362 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c26c6a2-66ad-448a-8503-a58dd63df9c9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 19:33:34,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c26c6a2-66ad-448a-8503-a58dd63df9c9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-12-02 19:33:34,557 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:33:34,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:33:34,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1743864507, now seen corresponding path program 1 times [2023-12-02 19:33:34,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:33:34,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288152415] [2023-12-02 19:33:34,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:33:34,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:33:34,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:33:34,697 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 19:33:34,697 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:33:34,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288152415] [2023-12-02 19:33:34,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288152415] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:33:34,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594426237] [2023-12-02 19:33:34,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:33:34,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:33:34,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c26c6a2-66ad-448a-8503-a58dd63df9c9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:33:34,699 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c26c6a2-66ad-448a-8503-a58dd63df9c9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:33:34,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c26c6a2-66ad-448a-8503-a58dd63df9c9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 19:33:34,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:33:34,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 1020 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 19:33:35,002 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:33:35,032 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 19:33:35,032 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:33:35,097 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 19:33:35,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594426237] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:33:35,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [243522267] [2023-12-02 19:33:35,101 INFO L159 IcfgInterpreter]: Started Sifa with 74 locations of interest [2023-12-02 19:33:35,101 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:33:35,102 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:33:35,102 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:33:35,102 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:34:57,161 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 226 for LOIs [2023-12-02 19:34:57,317 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 228 for LOIs [2023-12-02 19:34:57,476 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:35:55,907 WARN L293 SmtUtils]: Spent 9.74s on a formula simplification. DAG size of input: 515 DAG size of output: 515 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 19:36:05,991 WARN L293 SmtUtils]: Spent 9.75s on a formula simplification. DAG size of input: 515 DAG size of output: 515 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 19:36:16,891 WARN L293 SmtUtils]: Spent 10.51s on a formula simplification. DAG size of input: 521 DAG size of output: 521 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 19:36:28,112 WARN L293 SmtUtils]: Spent 10.77s on a formula simplification. DAG size of input: 519 DAG size of output: 519 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 19:36:38,887 WARN L293 SmtUtils]: Spent 10.33s on a formula simplification. DAG size of input: 523 DAG size of output: 523 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 19:36:49,636 WARN L293 SmtUtils]: Spent 10.27s on a formula simplification. DAG size of input: 521 DAG size of output: 521 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 19:37:00,453 WARN L293 SmtUtils]: Spent 10.29s on a formula simplification. DAG size of input: 525 DAG size of output: 525 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 19:37:11,260 WARN L293 SmtUtils]: Spent 10.25s on a formula simplification. DAG size of input: 523 DAG size of output: 523 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 19:37:21,948 WARN L293 SmtUtils]: Spent 10.11s on a formula simplification. DAG size of input: 527 DAG size of output: 527 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 19:37:32,729 WARN L293 SmtUtils]: Spent 10.09s on a formula simplification. DAG size of input: 525 DAG size of output: 525 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 19:37:43,209 WARN L293 SmtUtils]: Spent 9.88s on a formula simplification. DAG size of input: 529 DAG size of output: 529 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 19:37:51,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [243522267] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:37:51,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 19:37:51,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [4, 4, 4] total 37 [2023-12-02 19:37:51,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75774623] [2023-12-02 19:37:51,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:37:51,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-02 19:37:51,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:37:51,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-02 19:37:51,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1177, Unknown=0, NotChecked=0, Total=1332 [2023-12-02 19:37:51,639 INFO L87 Difference]: Start difference. First operand 428 states and 629 transitions. Second operand has 32 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 23 states have internal predecessors, (47), 7 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2023-12-02 19:38:07,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:38:07,078 INFO L93 Difference]: Finished difference Result 813 states and 1231 transitions. [2023-12-02 19:38:07,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-02 19:38:07,078 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 23 states have internal predecessors, (47), 7 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) Word has length 85 [2023-12-02 19:38:07,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:38:07,081 INFO L225 Difference]: With dead ends: 813 [2023-12-02 19:38:07,081 INFO L226 Difference]: Without dead ends: 498 [2023-12-02 19:38:07,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 174.1s TimeCoverageRelationStatistics Valid=155, Invalid=1177, Unknown=0, NotChecked=0, Total=1332 [2023-12-02 19:38:07,083 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 106 mSDsluCounter, 3245 mSDsCounter, 0 mSdLazyCounter, 2832 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 3432 SdHoareTripleChecker+Invalid, 2840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 2832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:38:07,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 3432 Invalid, 2840 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 2832 Invalid, 0 Unknown, 0 Unchecked, 15.0s Time] [2023-12-02 19:38:07,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2023-12-02 19:38:07,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 448. [2023-12-02 19:38:07,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 314 states have (on average 1.4394904458598725) internal successors, (452), 317 states have internal predecessors, (452), 105 states have call successors, (105), 29 states have call predecessors, (105), 28 states have return successors, (102), 101 states have call predecessors, (102), 102 states have call successors, (102) [2023-12-02 19:38:07,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 659 transitions. [2023-12-02 19:38:07,267 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 659 transitions. Word has length 85 [2023-12-02 19:38:07,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:38:07,267 INFO L495 AbstractCegarLoop]: Abstraction has 448 states and 659 transitions. [2023-12-02 19:38:07,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 23 states have internal predecessors, (47), 7 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2023-12-02 19:38:07,267 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 659 transitions. [2023-12-02 19:38:07,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-02 19:38:07,269 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:38:07,269 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:38:07,276 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c26c6a2-66ad-448a-8503-a58dd63df9c9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 19:38:07,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c26c6a2-66ad-448a-8503-a58dd63df9c9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-02 19:38:07,470 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:38:07,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:38:07,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1077682007, now seen corresponding path program 1 times [2023-12-02 19:38:07,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:38:07,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631058484] [2023-12-02 19:38:07,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:38:07,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:38:07,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:38:07,588 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 19:38:07,588 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:38:07,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631058484] [2023-12-02 19:38:07,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631058484] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:38:07,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467997267] [2023-12-02 19:38:07,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:38:07,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:38:07,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c26c6a2-66ad-448a-8503-a58dd63df9c9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:38:07,590 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c26c6a2-66ad-448a-8503-a58dd63df9c9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:38:07,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c26c6a2-66ad-448a-8503-a58dd63df9c9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 19:38:07,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:38:07,866 INFO L262 TraceCheckSpWp]: Trace formula consists of 1036 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 19:38:07,870 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:38:07,889 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 19:38:07,889 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:38:07,932 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 19:38:07,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467997267] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:38:07,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1450832672] [2023-12-02 19:38:07,935 INFO L159 IcfgInterpreter]: Started Sifa with 70 locations of interest [2023-12-02 19:38:07,935 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:38:07,935 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:38:07,935 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:38:07,935 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs