./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec11_product30.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_771464ef-5a9f-4bfc-ad04-cebfeab4f9f0/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771464ef-5a9f-4bfc-ad04-cebfeab4f9f0/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_771464ef-5a9f-4bfc-ad04-cebfeab4f9f0/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771464ef-5a9f-4bfc-ad04-cebfeab4f9f0/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_product30.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771464ef-5a9f-4bfc-ad04-cebfeab4f9f0/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_771464ef-5a9f-4bfc-ad04-cebfeab4f9f0/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 e4fb36b23f327758af91661b12ca1735faf7949901dbd5c1543c17ea0384ceb9 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:38:07,049 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:38:07,130 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771464ef-5a9f-4bfc-ad04-cebfeab4f9f0/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 15:38:07,135 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:38:07,135 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:38:07,157 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:38:07,158 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:38:07,159 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:38:07,160 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:38:07,160 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:38:07,161 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:38:07,161 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:38:07,162 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:38:07,162 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 15:38:07,163 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:38:07,164 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:38:07,164 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 15:38:07,165 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 15:38:07,165 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:38:07,166 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 15:38:07,166 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 15:38:07,167 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 15:38:07,167 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:38:07,168 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 15:38:07,168 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 15:38:07,169 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 15:38:07,169 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 15:38:07,169 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:38:07,170 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 15:38:07,170 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:38:07,170 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 15:38:07,171 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 15:38:07,171 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 15:38:07,171 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:38:07,172 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:38:07,172 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 15:38:07,172 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:38:07,172 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:38:07,172 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:38:07,173 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:38:07,173 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 15:38:07,173 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 15:38:07,173 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 15:38:07,174 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:38:07,174 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 15:38:07,174 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:38:07,174 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:38:07,174 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_771464ef-5a9f-4bfc-ad04-cebfeab4f9f0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771464ef-5a9f-4bfc-ad04-cebfeab4f9f0/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4fb36b23f327758af91661b12ca1735faf7949901dbd5c1543c17ea0384ceb9 [2023-12-02 15:38:07,445 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:38:07,467 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:38:07,470 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:38:07,471 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:38:07,472 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:38:07,473 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771464ef-5a9f-4bfc-ad04-cebfeab4f9f0/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/product-lines/email_spec11_product30.cil.c [2023-12-02 15:38:10,229 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:38:10,489 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:38:10,489 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771464ef-5a9f-4bfc-ad04-cebfeab4f9f0/sv-benchmarks/c/product-lines/email_spec11_product30.cil.c [2023-12-02 15:38:10,514 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771464ef-5a9f-4bfc-ad04-cebfeab4f9f0/bin/utaipan-verify-nQ1chXbOIh/data/215ed1232/97fe9b92bd144c76b116b0a5834a6a89/FLAGd26207db0 [2023-12-02 15:38:10,541 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771464ef-5a9f-4bfc-ad04-cebfeab4f9f0/bin/utaipan-verify-nQ1chXbOIh/data/215ed1232/97fe9b92bd144c76b116b0a5834a6a89 [2023-12-02 15:38:10,543 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:38:10,545 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:38:10,546 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:38:10,546 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:38:10,559 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:38:10,560 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:38:10" (1/1) ... [2023-12-02 15:38:10,561 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bc8e51b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:38:10, skipping insertion in model container [2023-12-02 15:38:10,561 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:38:10" (1/1) ... [2023-12-02 15:38:10,648 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:38:11,037 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_771464ef-5a9f-4bfc-ad04-cebfeab4f9f0/sv-benchmarks/c/product-lines/email_spec11_product30.cil.c[29507,29520] [2023-12-02 15:38:11,145 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:38:11,160 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 15:38:11,171 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [48] [2023-12-02 15:38:11,173 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [443] [2023-12-02 15:38:11,173 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [668] [2023-12-02 15:38:11,173 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"DecryptAutoResponder_spec.i","") [685] [2023-12-02 15:38:11,173 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [705] [2023-12-02 15:38:11,174 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [1104] [2023-12-02 15:38:11,174 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1240] [2023-12-02 15:38:11,174 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1278] [2023-12-02 15:38:11,174 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1560] [2023-12-02 15:38:11,175 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1569] [2023-12-02 15:38:11,175 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [1935] [2023-12-02 15:38:11,222 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_771464ef-5a9f-4bfc-ad04-cebfeab4f9f0/sv-benchmarks/c/product-lines/email_spec11_product30.cil.c[29507,29520] [2023-12-02 15:38:11,265 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:38:11,294 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:38:11,302 INFO L206 MainTranslator]: Completed translation [2023-12-02 15:38:11,302 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:38:11 WrapperNode [2023-12-02 15:38:11,302 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 15:38:11,304 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 15:38:11,304 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 15:38:11,304 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 15:38:11,312 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:38:11" (1/1) ... [2023-12-02 15:38:11,343 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:38:11" (1/1) ... [2023-12-02 15:38:11,394 INFO L138 Inliner]: procedures = 131, calls = 217, calls flagged for inlining = 60, calls inlined = 50, statements flattened = 925 [2023-12-02 15:38:11,394 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 15:38:11,395 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 15:38:11,395 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 15:38:11,395 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 15:38:11,403 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:38:11" (1/1) ... [2023-12-02 15:38:11,404 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:38:11" (1/1) ... [2023-12-02 15:38:11,411 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:38:11" (1/1) ... [2023-12-02 15:38:11,412 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:38:11" (1/1) ... [2023-12-02 15:38:11,431 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:38:11" (1/1) ... [2023-12-02 15:38:11,440 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:38:11" (1/1) ... [2023-12-02 15:38:11,446 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:38:11" (1/1) ... [2023-12-02 15:38:11,450 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:38:11" (1/1) ... [2023-12-02 15:38:11,457 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 15:38:11,458 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 15:38:11,458 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 15:38:11,459 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 15:38:11,459 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:38:11" (1/1) ... [2023-12-02 15:38:11,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:38:11,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771464ef-5a9f-4bfc-ad04-cebfeab4f9f0/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:38:11,493 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771464ef-5a9f-4bfc-ad04-cebfeab4f9f0/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 15:38:11,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771464ef-5a9f-4bfc-ad04-cebfeab4f9f0/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 15:38:11,528 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2023-12-02 15:38:11,528 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2023-12-02 15:38:11,528 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2023-12-02 15:38:11,529 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2023-12-02 15:38:11,529 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2023-12-02 15:38:11,529 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2023-12-02 15:38:11,529 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-12-02 15:38:11,529 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-12-02 15:38:11,529 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-12-02 15:38:11,529 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-12-02 15:38:11,530 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-12-02 15:38:11,530 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-12-02 15:38:11,530 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-12-02 15:38:11,530 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-12-02 15:38:11,530 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2023-12-02 15:38:11,530 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2023-12-02 15:38:11,531 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2023-12-02 15:38:11,531 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2023-12-02 15:38:11,531 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-12-02 15:38:11,531 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-12-02 15:38:11,531 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2023-12-02 15:38:11,531 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-12-02 15:38:11,531 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-12-02 15:38:11,532 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-12-02 15:38:11,532 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-12-02 15:38:11,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 15:38:11,532 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2023-12-02 15:38:11,532 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2023-12-02 15:38:11,532 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2023-12-02 15:38:11,532 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2023-12-02 15:38:11,533 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-12-02 15:38:11,533 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-12-02 15:38:11,533 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-12-02 15:38:11,533 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-12-02 15:38:11,533 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-12-02 15:38:11,533 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-12-02 15:38:11,534 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2023-12-02 15:38:11,534 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2023-12-02 15:38:11,534 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-12-02 15:38:11,534 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-12-02 15:38:11,534 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2023-12-02 15:38:11,534 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2023-12-02 15:38:11,534 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-12-02 15:38:11,534 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-12-02 15:38:11,535 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2023-12-02 15:38:11,535 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2023-12-02 15:38:11,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 15:38:11,535 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-12-02 15:38:11,535 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-12-02 15:38:11,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 15:38:11,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 15:38:11,727 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 15:38:11,730 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 15:38:12,433 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 15:38:12,925 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 15:38:12,925 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 15:38:12,927 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:38:12 BoogieIcfgContainer [2023-12-02 15:38:12,927 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 15:38:12,930 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 15:38:12,930 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 15:38:12,933 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 15:38:12,933 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:38:10" (1/3) ... [2023-12-02 15:38:12,934 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b1ba777 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:38:12, skipping insertion in model container [2023-12-02 15:38:12,934 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:38:11" (2/3) ... [2023-12-02 15:38:12,934 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b1ba777 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:38:12, skipping insertion in model container [2023-12-02 15:38:12,935 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:38:12" (3/3) ... [2023-12-02 15:38:12,936 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec11_product30.cil.c [2023-12-02 15:38:12,956 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 15:38:12,957 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 15:38:13,013 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 15:38:13,021 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;@1e1ae764, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 15:38:13,021 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 15:38:13,027 INFO L276 IsEmpty]: Start isEmpty. Operand has 186 states, 109 states have (on average 1.3302752293577982) internal successors, (145), 113 states have internal predecessors, (145), 52 states have call successors, (52), 23 states have call predecessors, (52), 23 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2023-12-02 15:38:13,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-02 15:38:13,042 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:38:13,043 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:38:13,044 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:38:13,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:38:13,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1359786236, now seen corresponding path program 1 times [2023-12-02 15:38:13,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:38:13,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539449776] [2023-12-02 15:38:13,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:38:13,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:38:13,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:38:13,423 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 15:38:13,424 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:38:13,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539449776] [2023-12-02 15:38:13,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539449776] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:38:13,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:38:13,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:38:13,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284321435] [2023-12-02 15:38:13,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:38:13,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 15:38:13,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:38:13,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 15:38:13,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 15:38:13,471 INFO L87 Difference]: Start difference. First operand has 186 states, 109 states have (on average 1.3302752293577982) internal successors, (145), 113 states have internal predecessors, (145), 52 states have call successors, (52), 23 states have call predecessors, (52), 23 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-02 15:38:13,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:38:13,606 INFO L93 Difference]: Finished difference Result 289 states and 376 transitions. [2023-12-02 15:38:13,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 15:38:13,612 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 88 [2023-12-02 15:38:13,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:38:13,625 INFO L225 Difference]: With dead ends: 289 [2023-12-02 15:38:13,625 INFO L226 Difference]: Without dead ends: 183 [2023-12-02 15:38:13,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 15:38:13,633 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 15:38:13,634 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 15:38:13,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2023-12-02 15:38:13,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2023-12-02 15:38:13,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 107 states have (on average 1.2990654205607477) internal successors, (139), 110 states have internal predecessors, (139), 52 states have call successors, (52), 23 states have call predecessors, (52), 23 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-12-02 15:38:13,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 242 transitions. [2023-12-02 15:38:13,694 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 242 transitions. Word has length 88 [2023-12-02 15:38:13,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:38:13,696 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 242 transitions. [2023-12-02 15:38:13,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-02 15:38:13,697 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 242 transitions. [2023-12-02 15:38:13,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-02 15:38:13,703 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:38:13,703 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:38:13,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 15:38:13,704 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:38:13,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:38:13,705 INFO L85 PathProgramCache]: Analyzing trace with hash 830532669, now seen corresponding path program 1 times [2023-12-02 15:38:13,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:38:13,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251745922] [2023-12-02 15:38:13,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:38:13,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:38:13,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:38:13,943 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 15:38:13,944 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:38:13,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251745922] [2023-12-02 15:38:13,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251745922] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:38:13,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:38:13,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:38:13,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191230688] [2023-12-02 15:38:13,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:38:13,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:38:13,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:38:13,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:38:13,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:38:13,949 INFO L87 Difference]: Start difference. First operand 183 states and 242 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-02 15:38:14,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:38:14,074 INFO L93 Difference]: Finished difference Result 285 states and 364 transitions. [2023-12-02 15:38:14,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:38:14,075 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 89 [2023-12-02 15:38:14,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:38:14,078 INFO L225 Difference]: With dead ends: 285 [2023-12-02 15:38:14,079 INFO L226 Difference]: Without dead ends: 185 [2023-12-02 15:38:14,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:38:14,082 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 15:38:14,083 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 15:38:14,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2023-12-02 15:38:14,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2023-12-02 15:38:14,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 109 states have (on average 1.2935779816513762) internal successors, (141), 112 states have internal predecessors, (141), 52 states have call successors, (52), 23 states have call predecessors, (52), 23 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-12-02 15:38:14,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 244 transitions. [2023-12-02 15:38:14,107 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 244 transitions. Word has length 89 [2023-12-02 15:38:14,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:38:14,108 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 244 transitions. [2023-12-02 15:38:14,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-02 15:38:14,108 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 244 transitions. [2023-12-02 15:38:14,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-02 15:38:14,112 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:38:14,112 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:38:14,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 15:38:14,113 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:38:14,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:38:14,113 INFO L85 PathProgramCache]: Analyzing trace with hash 692867820, now seen corresponding path program 1 times [2023-12-02 15:38:14,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:38:14,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213305020] [2023-12-02 15:38:14,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:38:14,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:38:14,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:38:14,257 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 15:38:14,257 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:38:14,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213305020] [2023-12-02 15:38:14,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213305020] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:38:14,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:38:14,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:38:14,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877969941] [2023-12-02 15:38:14,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:38:14,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:38:14,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:38:14,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:38:14,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:38:14,261 INFO L87 Difference]: Start difference. First operand 185 states and 244 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-02 15:38:14,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:38:14,378 INFO L93 Difference]: Finished difference Result 400 states and 547 transitions. [2023-12-02 15:38:14,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:38:14,378 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 94 [2023-12-02 15:38:14,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:38:14,381 INFO L225 Difference]: With dead ends: 400 [2023-12-02 15:38:14,382 INFO L226 Difference]: Without dead ends: 233 [2023-12-02 15:38:14,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:38:14,385 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 57 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:38:14,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 417 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:38:14,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2023-12-02 15:38:14,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 228. [2023-12-02 15:38:14,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 141 states have (on average 1.375886524822695) internal successors, (194), 144 states have internal predecessors, (194), 63 states have call successors, (63), 23 states have call predecessors, (63), 23 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-02 15:38:14,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 319 transitions. [2023-12-02 15:38:14,413 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 319 transitions. Word has length 94 [2023-12-02 15:38:14,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:38:14,413 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 319 transitions. [2023-12-02 15:38:14,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-02 15:38:14,414 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 319 transitions. [2023-12-02 15:38:14,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-02 15:38:14,417 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:38:14,417 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:38:14,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 15:38:14,418 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:38:14,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:38:14,418 INFO L85 PathProgramCache]: Analyzing trace with hash 637781585, now seen corresponding path program 1 times [2023-12-02 15:38:14,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:38:14,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830638848] [2023-12-02 15:38:14,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:38:14,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:38:14,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:38:14,584 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 15:38:14,585 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:38:14,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830638848] [2023-12-02 15:38:14,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830638848] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:38:14,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936559615] [2023-12-02 15:38:14,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:38:14,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:38:14,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771464ef-5a9f-4bfc-ad04-cebfeab4f9f0/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:38:14,589 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771464ef-5a9f-4bfc-ad04-cebfeab4f9f0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:38:14,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771464ef-5a9f-4bfc-ad04-cebfeab4f9f0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 15:38:14,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:38:14,936 INFO L262 TraceCheckSpWp]: Trace formula consists of 1091 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:38:14,946 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:38:15,033 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 15:38:15,033 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:38:15,115 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 15:38:15,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936559615] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:38:15,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [845907908] [2023-12-02 15:38:15,138 INFO L159 IcfgInterpreter]: Started Sifa with 74 locations of interest [2023-12-02 15:38:15,138 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:38:15,143 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:38:15,148 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:38:15,149 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:38:55,579 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 226 for LOIs [2023-12-02 15:38:55,738 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 228 for LOIs [2023-12-02 15:38:55,898 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:39:48,418 WARN L293 SmtUtils]: Spent 8.72s on a formula simplification. DAG size of input: 495 DAG size of output: 495 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:40:01,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [845907908] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:40:01,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:40:01,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [4, 4, 4] total 29 [2023-12-02 15:40:01,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397459421] [2023-12-02 15:40:01,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:40:01,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-02 15:40:01,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:40:01,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-02 15:40:01,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=725, Unknown=0, NotChecked=0, Total=812 [2023-12-02 15:40:01,883 INFO L87 Difference]: Start difference. First operand 228 states and 319 transitions. Second operand has 24 states, 16 states have (on average 2.875) internal successors, (46), 15 states have internal predecessors, (46), 7 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) [2023-12-02 15:40:11,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:40:11,225 INFO L93 Difference]: Finished difference Result 501 states and 734 transitions. [2023-12-02 15:40:11,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-02 15:40:11,225 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 16 states have (on average 2.875) internal successors, (46), 15 states have internal predecessors, (46), 7 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) Word has length 95 [2023-12-02 15:40:11,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:40:11,228 INFO L225 Difference]: With dead ends: 501 [2023-12-02 15:40:11,229 INFO L226 Difference]: Without dead ends: 291 [2023-12-02 15:40:11,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 66.0s TimeCoverageRelationStatistics Valid=87, Invalid=725, Unknown=0, NotChecked=0, Total=812 [2023-12-02 15:40:11,231 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 82 mSDsluCounter, 3001 mSDsCounter, 0 mSdLazyCounter, 2186 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 3227 SdHoareTripleChecker+Invalid, 2195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:40:11,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 3227 Invalid, 2195 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 2186 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2023-12-02 15:40:11,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2023-12-02 15:40:11,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 251. [2023-12-02 15:40:11,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 163 states have (on average 1.392638036809816) internal successors, (227), 166 states have internal predecessors, (227), 63 states have call successors, (63), 24 states have call predecessors, (63), 24 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-02 15:40:11,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 352 transitions. [2023-12-02 15:40:11,297 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 352 transitions. Word has length 95 [2023-12-02 15:40:11,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:40:11,298 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 352 transitions. [2023-12-02 15:40:11,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 16 states have (on average 2.875) internal successors, (46), 15 states have internal predecessors, (46), 7 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) [2023-12-02 15:40:11,298 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 352 transitions. [2023-12-02 15:40:11,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-02 15:40:11,301 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:40:11,302 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:40:11,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771464ef-5a9f-4bfc-ad04-cebfeab4f9f0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 15:40:11,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771464ef-5a9f-4bfc-ad04-cebfeab4f9f0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-12-02 15:40:11,505 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:40:11,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:40:11,506 INFO L85 PathProgramCache]: Analyzing trace with hash -734193110, now seen corresponding path program 1 times [2023-12-02 15:40:11,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:40:11,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855902534] [2023-12-02 15:40:11,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:40:11,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:40:11,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:40:11,600 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-02 15:40:11,600 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:40:11,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855902534] [2023-12-02 15:40:11,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855902534] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:40:11,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:40:11,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:40:11,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127405571] [2023-12-02 15:40:11,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:40:11,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:40:11,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:40:11,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:40:11,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:40:11,603 INFO L87 Difference]: Start difference. First operand 251 states and 352 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-02 15:40:11,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:40:11,799 INFO L93 Difference]: Finished difference Result 595 states and 868 transitions. [2023-12-02 15:40:11,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:40:11,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 100 [2023-12-02 15:40:11,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:40:11,802 INFO L225 Difference]: With dead ends: 595 [2023-12-02 15:40:11,802 INFO L226 Difference]: Without dead ends: 368 [2023-12-02 15:40:11,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:40:11,804 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 55 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 423 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 15:40:11,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 423 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:40:11,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2023-12-02 15:40:11,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 363. [2023-12-02 15:40:11,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 250 states have (on average 1.452) internal successors, (363), 253 states have internal predecessors, (363), 88 states have call successors, (88), 24 states have call predecessors, (88), 24 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2023-12-02 15:40:11,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 538 transitions. [2023-12-02 15:40:11,910 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 538 transitions. Word has length 100 [2023-12-02 15:40:11,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:40:11,911 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 538 transitions. [2023-12-02 15:40:11,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-02 15:40:11,911 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 538 transitions. [2023-12-02 15:40:11,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-02 15:40:11,914 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:40:11,914 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:40:11,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 15:40:11,914 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:40:11,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:40:11,915 INFO L85 PathProgramCache]: Analyzing trace with hash 2089252268, now seen corresponding path program 1 times [2023-12-02 15:40:11,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:40:11,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127997579] [2023-12-02 15:40:11,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:40:11,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:40:11,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:40:12,061 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-02 15:40:12,061 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:40:12,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127997579] [2023-12-02 15:40:12,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127997579] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:40:12,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650048241] [2023-12-02 15:40:12,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:40:12,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:40:12,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771464ef-5a9f-4bfc-ad04-cebfeab4f9f0/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:40:12,063 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771464ef-5a9f-4bfc-ad04-cebfeab4f9f0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:40:12,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771464ef-5a9f-4bfc-ad04-cebfeab4f9f0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 15:40:12,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:40:12,366 INFO L262 TraceCheckSpWp]: Trace formula consists of 1118 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:40:12,373 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:40:12,396 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-02 15:40:12,397 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:40:12,471 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-02 15:40:12,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650048241] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:40:12,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1255988772] [2023-12-02 15:40:12,476 INFO L159 IcfgInterpreter]: Started Sifa with 78 locations of interest [2023-12-02 15:40:12,476 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:40:12,477 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:40:12,477 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:40:12,477 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:41:11,146 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 226 for LOIs [2023-12-02 15:41:11,306 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 475 for LOIs [2023-12-02 15:41:13,358 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:41:33,814 WARN L293 SmtUtils]: Spent 6.09s on a formula simplification. DAG size of input: 475 DAG size of output: 476 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:41:42,844 WARN L293 SmtUtils]: Spent 8.88s on a formula simplification. DAG size of input: 505 DAG size of output: 500 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:42:21,434 WARN L293 SmtUtils]: Spent 8.88s on a formula simplification. DAG size of input: 498 DAG size of output: 498 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:42:30,759 WARN L293 SmtUtils]: Spent 9.02s on a formula simplification. DAG size of input: 498 DAG size of output: 498 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:42:40,798 WARN L293 SmtUtils]: Spent 9.66s on a formula simplification. DAG size of input: 504 DAG size of output: 504 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:42:50,459 WARN L293 SmtUtils]: Spent 9.27s on a formula simplification. DAG size of input: 502 DAG size of output: 502 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:43:00,267 WARN L293 SmtUtils]: Spent 9.42s on a formula simplification. DAG size of input: 506 DAG size of output: 506 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:43:21,029 WARN L293 SmtUtils]: Spent 20.24s on a formula simplification. DAG size of input: 510 DAG size of output: 500 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:43:31,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1255988772] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:43:31,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:43:31,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [4, 4, 4] total 33 [2023-12-02 15:43:31,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928532520] [2023-12-02 15:43:31,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:43:31,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-02 15:43:31,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:43:31,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-02 15:43:31,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=940, Unknown=0, NotChecked=0, Total=1056 [2023-12-02 15:43:31,778 INFO L87 Difference]: Start difference. First operand 363 states and 538 transitions. Second operand has 28 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 8 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) [2023-12-02 15:43:45,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:43:45,021 INFO L93 Difference]: Finished difference Result 742 states and 1129 transitions. [2023-12-02 15:43:45,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-02 15:43:45,021 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 8 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) Word has length 101 [2023-12-02 15:43:45,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:43:45,024 INFO L225 Difference]: With dead ends: 742 [2023-12-02 15:43:45,024 INFO L226 Difference]: Without dead ends: 442 [2023-12-02 15:43:45,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 138.4s TimeCoverageRelationStatistics Valid=116, Invalid=940, Unknown=0, NotChecked=0, Total=1056 [2023-12-02 15:43:45,026 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 97 mSDsluCounter, 2742 mSDsCounter, 0 mSdLazyCounter, 2384 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 2936 SdHoareTripleChecker+Invalid, 2392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 2384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:43:45,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 2936 Invalid, 2392 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 2384 Invalid, 0 Unknown, 0 Unchecked, 13.0s Time] [2023-12-02 15:43:45,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2023-12-02 15:43:45,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 377. [2023-12-02 15:43:45,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 262 states have (on average 1.450381679389313) internal successors, (380), 265 states have internal predecessors, (380), 89 states have call successors, (89), 25 states have call predecessors, (89), 25 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2023-12-02 15:43:45,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 557 transitions. [2023-12-02 15:43:45,140 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 557 transitions. Word has length 101 [2023-12-02 15:43:45,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:43:45,140 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 557 transitions. [2023-12-02 15:43:45,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 8 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) [2023-12-02 15:43:45,140 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 557 transitions. [2023-12-02 15:43:45,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-02 15:43:45,143 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:43:45,143 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:43:45,151 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771464ef-5a9f-4bfc-ad04-cebfeab4f9f0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 15:43:45,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771464ef-5a9f-4bfc-ad04-cebfeab4f9f0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-12-02 15:43:45,344 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:43:45,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:43:45,344 INFO L85 PathProgramCache]: Analyzing trace with hash 654133584, now seen corresponding path program 1 times [2023-12-02 15:43:45,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:43:45,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496017011] [2023-12-02 15:43:45,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:43:45,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:43:45,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:43:45,514 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 15:43:45,514 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:43:45,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496017011] [2023-12-02 15:43:45,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496017011] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:43:45,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385150436] [2023-12-02 15:43:45,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:43:45,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:43:45,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771464ef-5a9f-4bfc-ad04-cebfeab4f9f0/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:43:45,516 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771464ef-5a9f-4bfc-ad04-cebfeab4f9f0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:43:45,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771464ef-5a9f-4bfc-ad04-cebfeab4f9f0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 15:43:45,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:43:45,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 1196 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:43:45,864 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:43:45,888 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 15:43:45,888 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:43:45,954 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 15:43:45,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385150436] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:43:45,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [92377432] [2023-12-02 15:43:45,958 INFO L159 IcfgInterpreter]: Started Sifa with 83 locations of interest [2023-12-02 15:43:45,959 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:43:45,959 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:43:45,960 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:43:45,960 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:45:08,075 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 226 for LOIs [2023-12-02 15:45:08,236 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 534 for LOIs [2023-12-02 15:45:09,965 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 543 for LOIs [2023-12-02 15:45:11,684 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 466 for LOIs [2023-12-02 15:45:12,383 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 228 for LOIs [2023-12-02 15:45:12,547 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:46:08,213 WARN L293 SmtUtils]: Spent 10.90s on a formula simplification. DAG size of input: 571 DAG size of output: 566 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:46:19,209 WARN L293 SmtUtils]: Spent 10.63s on a formula simplification. DAG size of input: 571 DAG size of output: 566 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:47:06,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [92377432] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:47:06,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:47:06,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [4, 4, 4] total 38 [2023-12-02 15:47:06,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980995969] [2023-12-02 15:47:06,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:47:06,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-02 15:47:06,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:47:06,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-02 15:47:06,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1290, Unknown=0, NotChecked=0, Total=1406 [2023-12-02 15:47:06,453 INFO L87 Difference]: Start difference. First operand 377 states and 557 transitions. Second operand has 33 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 10 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (20), 10 states have call predecessors, (20), 10 states have call successors, (20) [2023-12-02 15:47:25,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:47:25,549 INFO L93 Difference]: Finished difference Result 767 states and 1164 transitions. [2023-12-02 15:47:25,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-02 15:47:25,549 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 10 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (20), 10 states have call predecessors, (20), 10 states have call successors, (20) Word has length 104 [2023-12-02 15:47:25,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:47:25,552 INFO L225 Difference]: With dead ends: 767 [2023-12-02 15:47:25,552 INFO L226 Difference]: Without dead ends: 467 [2023-12-02 15:47:25,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 113.9s TimeCoverageRelationStatistics Valid=116, Invalid=1290, Unknown=0, NotChecked=0, Total=1406 [2023-12-02 15:47:25,554 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 58 mSDsluCounter, 3192 mSDsCounter, 0 mSdLazyCounter, 3180 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 3386 SdHoareTripleChecker+Invalid, 3189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 3180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.8s IncrementalHoareTripleChecker+Time [2023-12-02 15:47:25,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 3386 Invalid, 3189 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 3180 Invalid, 0 Unknown, 0 Unchecked, 18.8s Time] [2023-12-02 15:47:25,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2023-12-02 15:47:25,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 413. [2023-12-02 15:47:25,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 292 states have (on average 1.4452054794520548) internal successors, (422), 295 states have internal predecessors, (422), 92 states have call successors, (92), 28 states have call predecessors, (92), 28 states have return successors, (91), 91 states have call predecessors, (91), 91 states have call successors, (91) [2023-12-02 15:47:25,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 605 transitions. [2023-12-02 15:47:25,704 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 605 transitions. Word has length 104 [2023-12-02 15:47:25,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:47:25,704 INFO L495 AbstractCegarLoop]: Abstraction has 413 states and 605 transitions. [2023-12-02 15:47:25,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 10 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (20), 10 states have call predecessors, (20), 10 states have call successors, (20) [2023-12-02 15:47:25,704 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 605 transitions. [2023-12-02 15:47:25,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-02 15:47:25,706 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:47:25,706 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:47:25,713 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771464ef-5a9f-4bfc-ad04-cebfeab4f9f0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 15:47:25,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771464ef-5a9f-4bfc-ad04-cebfeab4f9f0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-12-02 15:47:25,907 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:47:25,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:47:25,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1596620358, now seen corresponding path program 1 times [2023-12-02 15:47:25,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:47:25,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029595084] [2023-12-02 15:47:25,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:47:25,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:47:25,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:47:26,067 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 15:47:26,067 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:47:26,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029595084] [2023-12-02 15:47:26,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029595084] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:47:26,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836162061] [2023-12-02 15:47:26,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:47:26,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:47:26,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771464ef-5a9f-4bfc-ad04-cebfeab4f9f0/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:47:26,069 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771464ef-5a9f-4bfc-ad04-cebfeab4f9f0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:47:26,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771464ef-5a9f-4bfc-ad04-cebfeab4f9f0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 15:47:26,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:47:26,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 1114 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:47:26,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:47:26,406 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 15:47:26,406 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:47:26,473 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 15:47:26,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836162061] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:47:26,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [126912215] [2023-12-02 15:47:26,477 INFO L159 IcfgInterpreter]: Started Sifa with 82 locations of interest [2023-12-02 15:47:26,477 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:47:26,478 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:47:26,478 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:47:26,478 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:48:48,977 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 226 for LOIs [2023-12-02 15:48:49,138 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 228 for LOIs [2023-12-02 15:48:49,300 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:49:42,461 WARN L293 SmtUtils]: Spent 8.96s on a formula simplification. DAG size of input: 502 DAG size of output: 502 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:49:51,641 WARN L293 SmtUtils]: Spent 8.89s on a formula simplification. DAG size of input: 502 DAG size of output: 502 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:50:01,633 WARN L293 SmtUtils]: Spent 9.66s on a formula simplification. DAG size of input: 508 DAG size of output: 508 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:50:11,620 WARN L293 SmtUtils]: Spent 9.61s on a formula simplification. DAG size of input: 506 DAG size of output: 506 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:50:21,738 WARN L293 SmtUtils]: Spent 9.71s on a formula simplification. DAG size of input: 510 DAG size of output: 510 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:50:44,096 WARN L293 SmtUtils]: Spent 21.83s on a formula simplification. DAG size of input: 514 DAG size of output: 504 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:51:07,186 WARN L293 SmtUtils]: Spent 22.38s on a formula simplification. DAG size of input: 518 DAG size of output: 508 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:51:30,849 WARN L293 SmtUtils]: Spent 23.08s on a formula simplification. DAG size of input: 516 DAG size of output: 506 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:51:55,028 WARN L293 SmtUtils]: Spent 23.47s on a formula simplification. DAG size of input: 520 DAG size of output: 510 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:52:12,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [126912215] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:52:12,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:52:12,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [4, 4, 4] total 37 [2023-12-02 15:52:12,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299115095] [2023-12-02 15:52:12,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:52:12,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-02 15:52:12,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:52:12,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-02 15:52:12,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1177, Unknown=0, NotChecked=0, Total=1332 [2023-12-02 15:52:12,777 INFO L87 Difference]: Start difference. First operand 413 states and 605 transitions. Second operand has 32 states, 24 states have (on average 2.25) internal successors, (54), 23 states have internal predecessors, (54), 7 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17)