./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec1_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_5d44171b-4bfc-416a-902a-483682cefd1b/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44171b-4bfc-416a-902a-483682cefd1b/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_5d44171b-4bfc-416a-902a-483682cefd1b/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44171b-4bfc-416a-902a-483682cefd1b/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec1_product30.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44171b-4bfc-416a-902a-483682cefd1b/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_5d44171b-4bfc-416a-902a-483682cefd1b/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 c07a23e40b849b33d08a88f08826cd6b68b33a2f2aee4edabb68f594c2a0aef6 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 19:22:30,985 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 19:22:31,049 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44171b-4bfc-416a-902a-483682cefd1b/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 19:22:31,054 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 19:22:31,055 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 19:22:31,079 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 19:22:31,080 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 19:22:31,080 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 19:22:31,081 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 19:22:31,081 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 19:22:31,082 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 19:22:31,083 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 19:22:31,083 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 19:22:31,084 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 19:22:31,084 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 19:22:31,085 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 19:22:31,085 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 19:22:31,086 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 19:22:31,086 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 19:22:31,087 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 19:22:31,087 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 19:22:31,088 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 19:22:31,089 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 19:22:31,090 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 19:22:31,090 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 19:22:31,091 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 19:22:31,091 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 19:22:31,092 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 19:22:31,092 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 19:22:31,092 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 19:22:31,093 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 19:22:31,093 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 19:22:31,093 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 19:22:31,094 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 19:22:31,094 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 19:22:31,094 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 19:22:31,094 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 19:22:31,095 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:22:31,095 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 19:22:31,095 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 19:22:31,095 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 19:22:31,096 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 19:22:31,096 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 19:22:31,096 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 19:22:31,096 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 19:22:31,096 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 19:22:31,097 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 19:22:31,097 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_5d44171b-4bfc-416a-902a-483682cefd1b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44171b-4bfc-416a-902a-483682cefd1b/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c07a23e40b849b33d08a88f08826cd6b68b33a2f2aee4edabb68f594c2a0aef6 [2023-12-02 19:22:31,355 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 19:22:31,380 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 19:22:31,383 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 19:22:31,385 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 19:22:31,386 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 19:22:31,387 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44171b-4bfc-416a-902a-483682cefd1b/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/product-lines/email_spec1_product30.cil.c [2023-12-02 19:22:34,418 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 19:22:34,716 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 19:22:34,716 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44171b-4bfc-416a-902a-483682cefd1b/sv-benchmarks/c/product-lines/email_spec1_product30.cil.c [2023-12-02 19:22:34,741 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44171b-4bfc-416a-902a-483682cefd1b/bin/utaipan-verify-nQ1chXbOIh/data/03d040de9/60db792388c143619cd9cc8b84798c24/FLAGa10589d2b [2023-12-02 19:22:34,755 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44171b-4bfc-416a-902a-483682cefd1b/bin/utaipan-verify-nQ1chXbOIh/data/03d040de9/60db792388c143619cd9cc8b84798c24 [2023-12-02 19:22:34,757 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 19:22:34,759 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 19:22:34,760 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 19:22:34,760 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 19:22:34,765 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 19:22:34,766 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:22:34" (1/1) ... [2023-12-02 19:22:34,767 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2161d0e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:22:34, skipping insertion in model container [2023-12-02 19:22:34,767 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:22:34" (1/1) ... [2023-12-02 19:22:34,839 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 19:22:35,416 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_5d44171b-4bfc-416a-902a-483682cefd1b/sv-benchmarks/c/product-lines/email_spec1_product30.cil.c[58327,58340] [2023-12-02 19:22:35,431 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:22:35,448 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 19:22:35,459 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [48] [2023-12-02 19:22:35,461 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"AddressBookEncrypt_spec.i","") [208] [2023-12-02 19:22:35,461 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [238] [2023-12-02 19:22:35,462 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [540] [2023-12-02 19:22:35,462 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [906] [2023-12-02 19:22:35,462 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [1978] [2023-12-02 19:22:35,462 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [2337] [2023-12-02 19:22:35,462 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2734] [2023-12-02 19:22:35,463 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2743] [2023-12-02 19:22:35,463 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2778] [2023-12-02 19:22:35,463 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [2994] [2023-12-02 19:22:35,550 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_5d44171b-4bfc-416a-902a-483682cefd1b/sv-benchmarks/c/product-lines/email_spec1_product30.cil.c[58327,58340] [2023-12-02 19:22:35,556 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:22:35,589 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 19:22:35,598 INFO L206 MainTranslator]: Completed translation [2023-12-02 19:22:35,598 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:22:35 WrapperNode [2023-12-02 19:22:35,599 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 19:22:35,600 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 19:22:35,600 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 19:22:35,600 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 19:22:35,609 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:22:35" (1/1) ... [2023-12-02 19:22:35,641 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:22:35" (1/1) ... [2023-12-02 19:22:35,694 INFO L138 Inliner]: procedures = 131, calls = 218, calls flagged for inlining = 60, calls inlined = 50, statements flattened = 931 [2023-12-02 19:22:35,694 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 19:22:35,695 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 19:22:35,695 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 19:22:35,695 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 19:22:35,706 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:22:35" (1/1) ... [2023-12-02 19:22:35,707 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:22:35" (1/1) ... [2023-12-02 19:22:35,714 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:22:35" (1/1) ... [2023-12-02 19:22:35,715 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:22:35" (1/1) ... [2023-12-02 19:22:35,743 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:22:35" (1/1) ... [2023-12-02 19:22:35,754 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:22:35" (1/1) ... [2023-12-02 19:22:35,761 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:22:35" (1/1) ... [2023-12-02 19:22:35,767 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:22:35" (1/1) ... [2023-12-02 19:22:35,777 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 19:22:35,779 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 19:22:35,779 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 19:22:35,779 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 19:22:35,780 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:22:35" (1/1) ... [2023-12-02 19:22:35,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:22:35,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44171b-4bfc-416a-902a-483682cefd1b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:22:35,819 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44171b-4bfc-416a-902a-483682cefd1b/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 19:22:35,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44171b-4bfc-416a-902a-483682cefd1b/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 19:22:35,867 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2023-12-02 19:22:35,867 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2023-12-02 19:22:35,867 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2023-12-02 19:22:35,867 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2023-12-02 19:22:35,868 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2023-12-02 19:22:35,868 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2023-12-02 19:22:35,868 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-12-02 19:22:35,868 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-12-02 19:22:35,869 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-12-02 19:22:35,869 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-12-02 19:22:35,869 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-12-02 19:22:35,869 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-12-02 19:22:35,869 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-12-02 19:22:35,870 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-12-02 19:22:35,870 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2023-12-02 19:22:35,870 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2023-12-02 19:22:35,870 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2023-12-02 19:22:35,870 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2023-12-02 19:22:35,871 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-12-02 19:22:35,871 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-12-02 19:22:35,871 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2023-12-02 19:22:35,871 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-12-02 19:22:35,871 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-12-02 19:22:35,872 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-12-02 19:22:35,872 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-12-02 19:22:35,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 19:22:35,872 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2023-12-02 19:22:35,872 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2023-12-02 19:22:35,873 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2023-12-02 19:22:35,873 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2023-12-02 19:22:35,873 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-12-02 19:22:35,873 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-12-02 19:22:35,873 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-12-02 19:22:35,874 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-12-02 19:22:35,874 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-12-02 19:22:35,874 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-12-02 19:22:35,874 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2023-12-02 19:22:35,874 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2023-12-02 19:22:35,875 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-12-02 19:22:35,875 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-12-02 19:22:35,875 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2023-12-02 19:22:35,875 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2023-12-02 19:22:35,875 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-12-02 19:22:35,875 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-12-02 19:22:35,876 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2023-12-02 19:22:35,876 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2023-12-02 19:22:35,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 19:22:35,876 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-12-02 19:22:35,876 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-12-02 19:22:35,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 19:22:35,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 19:22:36,081 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 19:22:36,083 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 19:22:36,946 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 19:22:37,449 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 19:22:37,450 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 19:22:37,451 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:22:37 BoogieIcfgContainer [2023-12-02 19:22:37,452 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 19:22:37,455 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 19:22:37,455 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 19:22:37,459 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 19:22:37,459 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:22:34" (1/3) ... [2023-12-02 19:22:37,460 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cdc1d7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:22:37, skipping insertion in model container [2023-12-02 19:22:37,460 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:22:35" (2/3) ... [2023-12-02 19:22:37,460 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cdc1d7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:22:37, skipping insertion in model container [2023-12-02 19:22:37,461 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:22:37" (3/3) ... [2023-12-02 19:22:37,462 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec1_product30.cil.c [2023-12-02 19:22:37,484 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 19:22:37,484 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 19:22:37,545 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 19:22:37,553 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;@6f88c42, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 19:22:37,553 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 19:22:37,560 INFO L276 IsEmpty]: Start isEmpty. Operand has 189 states, 111 states have (on average 1.3333333333333333) internal successors, (148), 115 states have internal predecessors, (148), 53 states have call successors, (53), 23 states have call predecessors, (53), 23 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2023-12-02 19:22:37,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-02 19:22:37,576 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:22:37,577 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:22:37,577 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:22:37,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:22:37,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1802587373, now seen corresponding path program 1 times [2023-12-02 19:22:37,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:22:37,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365777474] [2023-12-02 19:22:37,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:22:37,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:22:37,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:22:37,988 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 19:22:37,988 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:22:37,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365777474] [2023-12-02 19:22:37,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365777474] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:22:37,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:22:37,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 19:22:37,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103618442] [2023-12-02 19:22:37,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:22:37,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 19:22:37,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:22:38,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 19:22:38,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 19:22:38,029 INFO L87 Difference]: Start difference. First operand has 189 states, 111 states have (on average 1.3333333333333333) internal successors, (148), 115 states have internal predecessors, (148), 53 states have call successors, (53), 23 states have call predecessors, (53), 23 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) Second operand has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-02 19:22:38,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:22:38,170 INFO L93 Difference]: Finished difference Result 295 states and 386 transitions. [2023-12-02 19:22:38,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 19:22:38,173 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 64 [2023-12-02 19:22:38,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:22:38,187 INFO L225 Difference]: With dead ends: 295 [2023-12-02 19:22:38,187 INFO L226 Difference]: Without dead ends: 186 [2023-12-02 19:22:38,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 19:22:38,196 INFO L413 NwaCegarLoop]: 217 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, 217 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:22:38,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 217 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:22:38,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2023-12-02 19:22:38,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2023-12-02 19:22:38,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 109 states have (on average 1.3027522935779816) internal successors, (142), 112 states have internal predecessors, (142), 53 states have call successors, (53), 23 states have call predecessors, (53), 23 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2023-12-02 19:22:38,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 247 transitions. [2023-12-02 19:22:38,263 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 247 transitions. Word has length 64 [2023-12-02 19:22:38,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:22:38,264 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 247 transitions. [2023-12-02 19:22:38,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-02 19:22:38,265 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 247 transitions. [2023-12-02 19:22:38,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-02 19:22:38,270 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:22:38,271 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:22:38,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 19:22:38,271 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:22:38,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:22:38,272 INFO L85 PathProgramCache]: Analyzing trace with hash -2063400079, now seen corresponding path program 1 times [2023-12-02 19:22:38,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:22:38,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073566723] [2023-12-02 19:22:38,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:22:38,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:22:38,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:22:38,501 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 19:22:38,501 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:22:38,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073566723] [2023-12-02 19:22:38,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073566723] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:22:38,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:22:38,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:22:38,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53354929] [2023-12-02 19:22:38,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:22:38,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:22:38,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:22:38,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:22:38,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:22:38,507 INFO L87 Difference]: Start difference. First operand 186 states and 247 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-02 19:22:38,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:22:38,638 INFO L93 Difference]: Finished difference Result 291 states and 374 transitions. [2023-12-02 19:22:38,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:22:38,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 65 [2023-12-02 19:22:38,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:22:38,643 INFO L225 Difference]: With dead ends: 291 [2023-12-02 19:22:38,644 INFO L226 Difference]: Without dead ends: 188 [2023-12-02 19:22:38,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:22:38,647 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 0 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:22:38,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 427 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:22:38,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2023-12-02 19:22:38,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2023-12-02 19:22:38,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 111 states have (on average 1.2972972972972974) internal successors, (144), 114 states have internal predecessors, (144), 53 states have call successors, (53), 23 states have call predecessors, (53), 23 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2023-12-02 19:22:38,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 249 transitions. [2023-12-02 19:22:38,676 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 249 transitions. Word has length 65 [2023-12-02 19:22:38,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:22:38,677 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 249 transitions. [2023-12-02 19:22:38,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-02 19:22:38,678 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 249 transitions. [2023-12-02 19:22:38,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-02 19:22:38,681 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:22:38,681 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:22:38,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 19:22:38,682 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:22:38,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:22:38,682 INFO L85 PathProgramCache]: Analyzing trace with hash 39593044, now seen corresponding path program 1 times [2023-12-02 19:22:38,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:22:38,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987017475] [2023-12-02 19:22:38,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:22:38,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:22:38,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:22:38,835 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 19:22:38,836 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:22:38,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987017475] [2023-12-02 19:22:38,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987017475] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:22:38,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:22:38,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:22:38,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225987220] [2023-12-02 19:22:38,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:22:38,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:22:38,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:22:38,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:22:38,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:22:38,839 INFO L87 Difference]: Start difference. First operand 188 states and 249 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-02 19:22:38,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:22:38,987 INFO L93 Difference]: Finished difference Result 406 states and 557 transitions. [2023-12-02 19:22:38,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:22:38,987 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 70 [2023-12-02 19:22:38,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:22:38,991 INFO L225 Difference]: With dead ends: 406 [2023-12-02 19:22:38,991 INFO L226 Difference]: Without dead ends: 236 [2023-12-02 19:22:38,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:22:38,994 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 57 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:22:38,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 440 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:22:38,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2023-12-02 19:22:39,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 231. [2023-12-02 19:22:39,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 143 states have (on average 1.3776223776223777) internal successors, (197), 146 states have internal predecessors, (197), 64 states have call successors, (64), 23 states have call predecessors, (64), 23 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2023-12-02 19:22:39,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 324 transitions. [2023-12-02 19:22:39,026 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 324 transitions. Word has length 70 [2023-12-02 19:22:39,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:22:39,026 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 324 transitions. [2023-12-02 19:22:39,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-02 19:22:39,027 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 324 transitions. [2023-12-02 19:22:39,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-02 19:22:39,031 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:22:39,031 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:22:39,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 19:22:39,032 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:22:39,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:22:39,032 INFO L85 PathProgramCache]: Analyzing trace with hash -580773190, now seen corresponding path program 1 times [2023-12-02 19:22:39,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:22:39,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850105217] [2023-12-02 19:22:39,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:22:39,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:22:39,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:22:39,246 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 19:22:39,246 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:22:39,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850105217] [2023-12-02 19:22:39,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850105217] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:22:39,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993010312] [2023-12-02 19:22:39,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:22:39,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:22:39,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44171b-4bfc-416a-902a-483682cefd1b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:22:39,249 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44171b-4bfc-416a-902a-483682cefd1b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:22:39,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44171b-4bfc-416a-902a-483682cefd1b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 19:22:39,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:22:39,654 INFO L262 TraceCheckSpWp]: Trace formula consists of 980 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 19:22:39,664 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:22:39,729 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 19:22:39,730 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:22:39,812 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 19:22:39,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993010312] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:22:39,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [734278313] [2023-12-02 19:22:39,838 INFO L159 IcfgInterpreter]: Started Sifa with 60 locations of interest [2023-12-02 19:22:39,838 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:22:39,842 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:22:39,849 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:22:39,849 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:23:32,142 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 226 for LOIs [2023-12-02 19:23:32,368 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 240 for LOIs [2023-12-02 19:23:32,654 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:24:31,910 WARN L293 SmtUtils]: Spent 9.55s 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 19:24:46,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [734278313] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:24:46,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 19:24:46,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [4, 4, 4] total 29 [2023-12-02 19:24:46,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405099658] [2023-12-02 19:24:46,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:24:46,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-02 19:24:46,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:24:46,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-02 19:24:46,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=725, Unknown=0, NotChecked=0, Total=812 [2023-12-02 19:24:46,283 INFO L87 Difference]: Start difference. First operand 231 states and 324 transitions. Second operand has 24 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2023-12-02 19:24:59,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:24:59,863 INFO L93 Difference]: Finished difference Result 507 states and 744 transitions. [2023-12-02 19:24:59,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-02 19:24:59,864 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) Word has length 71 [2023-12-02 19:24:59,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:24:59,866 INFO L225 Difference]: With dead ends: 507 [2023-12-02 19:24:59,867 INFO L226 Difference]: Without dead ends: 294 [2023-12-02 19:24:59,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 76.7s TimeCoverageRelationStatistics Valid=91, Invalid=779, Unknown=0, NotChecked=0, Total=870 [2023-12-02 19:24:59,869 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 109 mSDsluCounter, 3017 mSDsCounter, 0 mSdLazyCounter, 2551 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 3248 SdHoareTripleChecker+Invalid, 2561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 2551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2023-12-02 19:24:59,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 3248 Invalid, 2561 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 2551 Invalid, 0 Unknown, 0 Unchecked, 10.3s Time] [2023-12-02 19:24:59,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2023-12-02 19:24:59,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 254. [2023-12-02 19:24:59,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 165 states have (on average 1.393939393939394) internal successors, (230), 168 states have internal predecessors, (230), 64 states have call successors, (64), 24 states have call predecessors, (64), 24 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2023-12-02 19:24:59,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 357 transitions. [2023-12-02 19:24:59,938 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 357 transitions. Word has length 71 [2023-12-02 19:24:59,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:24:59,938 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 357 transitions. [2023-12-02 19:24:59,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2023-12-02 19:24:59,939 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 357 transitions. [2023-12-02 19:24:59,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-02 19:24:59,941 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:24:59,942 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:24:59,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44171b-4bfc-416a-902a-483682cefd1b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 19:25:00,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44171b-4bfc-416a-902a-483682cefd1b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:25:00,143 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:25:00,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:25:00,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1327953508, now seen corresponding path program 1 times [2023-12-02 19:25:00,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:25:00,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485619967] [2023-12-02 19:25:00,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:25:00,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:25:00,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:25:00,238 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 19:25:00,238 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:25:00,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485619967] [2023-12-02 19:25:00,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485619967] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:25:00,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:25:00,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:25:00,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131546786] [2023-12-02 19:25:00,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:25:00,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:25:00,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:25:00,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:25:00,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:25:00,240 INFO L87 Difference]: Start difference. First operand 254 states and 357 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-02 19:25:00,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:25:00,425 INFO L93 Difference]: Finished difference Result 601 states and 878 transitions. [2023-12-02 19:25:00,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:25:00,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 76 [2023-12-02 19:25:00,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:25:00,428 INFO L225 Difference]: With dead ends: 601 [2023-12-02 19:25:00,428 INFO L226 Difference]: Without dead ends: 371 [2023-12-02 19:25:00,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:25:00,430 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 55 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:25:00,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 436 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:25:00,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2023-12-02 19:25:00,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 366. [2023-12-02 19:25:00,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 252 states have (on average 1.4523809523809523) internal successors, (366), 255 states have internal predecessors, (366), 89 states have call successors, (89), 24 states have call predecessors, (89), 24 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2023-12-02 19:25:00,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 543 transitions. [2023-12-02 19:25:00,525 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 543 transitions. Word has length 76 [2023-12-02 19:25:00,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:25:00,525 INFO L495 AbstractCegarLoop]: Abstraction has 366 states and 543 transitions. [2023-12-02 19:25:00,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-02 19:25:00,525 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 543 transitions. [2023-12-02 19:25:00,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-02 19:25:00,528 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:25:00,528 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:25:00,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 19:25:00,529 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:25:00,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:25:00,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1778477663, now seen corresponding path program 1 times [2023-12-02 19:25:00,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:25:00,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914306953] [2023-12-02 19:25:00,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:25:00,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:25:00,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:25:00,638 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 19:25:00,639 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:25:00,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914306953] [2023-12-02 19:25:00,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914306953] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:25:00,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20691328] [2023-12-02 19:25:00,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:25:00,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:25:00,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44171b-4bfc-416a-902a-483682cefd1b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:25:00,642 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44171b-4bfc-416a-902a-483682cefd1b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:25:00,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44171b-4bfc-416a-902a-483682cefd1b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 19:25:00,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:25:00,913 INFO L262 TraceCheckSpWp]: Trace formula consists of 1007 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 19:25:00,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:25:00,940 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 19:25:00,940 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:25:00,991 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 19:25:00,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20691328] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:25:00,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1196631735] [2023-12-02 19:25:00,995 INFO L159 IcfgInterpreter]: Started Sifa with 64 locations of interest [2023-12-02 19:25:00,995 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:25:00,996 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:25:00,996 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:25:00,997 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:26:00,876 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 226 for LOIs [2023-12-02 19:26:01,043 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 249 for LOIs [2023-12-02 19:26:01,291 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:26:55,285 WARN L293 SmtUtils]: Spent 9.28s on a formula simplification. DAG size of input: 501 DAG size of output: 501 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 19:27:04,455 WARN L293 SmtUtils]: Spent 8.88s on a formula simplification. DAG size of input: 501 DAG size of output: 501 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 19:27:14,403 WARN L293 SmtUtils]: Spent 9.61s on a formula simplification. DAG size of input: 507 DAG size of output: 507 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 19:27:24,276 WARN L293 SmtUtils]: Spent 9.48s on a formula simplification. DAG size of input: 505 DAG size of output: 505 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 19:27:34,531 WARN L293 SmtUtils]: Spent 9.87s on a formula simplification. DAG size of input: 509 DAG size of output: 509 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 19:27:44,929 WARN L293 SmtUtils]: Spent 9.97s on a formula simplification. DAG size of input: 507 DAG size of output: 507 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 19:27:56,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1196631735] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:27:56,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 19:27:56,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [4, 4, 4] total 33 [2023-12-02 19:27:56,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594974802] [2023-12-02 19:27:56,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:27:56,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-02 19:27:56,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:27:56,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-02 19:27:56,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=940, Unknown=0, NotChecked=0, Total=1056 [2023-12-02 19:27:56,170 INFO L87 Difference]: Start difference. First operand 366 states and 543 transitions. Second operand has 28 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 8 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2023-12-02 19:28:09,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:28:09,394 INFO L93 Difference]: Finished difference Result 748 states and 1139 transitions. [2023-12-02 19:28:09,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-02 19:28:09,394 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 8 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) Word has length 77 [2023-12-02 19:28:09,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:28:09,397 INFO L225 Difference]: With dead ends: 748 [2023-12-02 19:28:09,397 INFO L226 Difference]: Without dead ends: 445 [2023-12-02 19:28:09,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 114.9s TimeCoverageRelationStatistics Valid=116, Invalid=940, Unknown=0, NotChecked=0, Total=1056 [2023-12-02 19:28:09,399 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 73 mSDsluCounter, 3268 mSDsCounter, 0 mSdLazyCounter, 2702 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 3466 SdHoareTripleChecker+Invalid, 2710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 2702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2023-12-02 19:28:09,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 3466 Invalid, 2710 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 2702 Invalid, 0 Unknown, 0 Unchecked, 12.9s Time] [2023-12-02 19:28:09,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2023-12-02 19:28:09,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 380. [2023-12-02 19:28:09,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 264 states have (on average 1.4507575757575757) internal successors, (383), 267 states have internal predecessors, (383), 90 states have call successors, (90), 25 states have call predecessors, (90), 25 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) [2023-12-02 19:28:09,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 562 transitions. [2023-12-02 19:28:09,503 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 562 transitions. Word has length 77 [2023-12-02 19:28:09,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:28:09,503 INFO L495 AbstractCegarLoop]: Abstraction has 380 states and 562 transitions. [2023-12-02 19:28:09,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 8 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2023-12-02 19:28:09,503 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 562 transitions. [2023-12-02 19:28:09,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-02 19:28:09,505 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:28:09,505 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:28:09,511 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44171b-4bfc-416a-902a-483682cefd1b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 19:28:09,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44171b-4bfc-416a-902a-483682cefd1b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-12-02 19:28:09,706 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:28:09,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:28:09,706 INFO L85 PathProgramCache]: Analyzing trace with hash 458992224, now seen corresponding path program 1 times [2023-12-02 19:28:09,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:28:09,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110892351] [2023-12-02 19:28:09,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:28:09,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:28:09,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:28:09,849 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 19:28:09,849 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:28:09,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110892351] [2023-12-02 19:28:09,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110892351] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:28:09,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684497620] [2023-12-02 19:28:09,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:28:09,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:28:09,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44171b-4bfc-416a-902a-483682cefd1b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:28:09,851 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44171b-4bfc-416a-902a-483682cefd1b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:28:09,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44171b-4bfc-416a-902a-483682cefd1b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 19:28:10,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:28:10,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 1085 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 19:28:10,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:28:10,183 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 19:28:10,184 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:28:10,241 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 19:28:10,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684497620] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:28:10,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [172438964] [2023-12-02 19:28:10,245 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2023-12-02 19:28:10,245 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:28:10,246 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:28:10,246 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:28:10,246 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:29:35,392 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 226 for LOIs [2023-12-02 19:29:35,559 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 537 for LOIs [2023-12-02 19:29:37,293 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 546 for LOIs [2023-12-02 19:29:39,126 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 469 for LOIs [2023-12-02 19:29:40,067 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 240 for LOIs [2023-12-02 19:29:40,295 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:30:37,667 WARN L293 SmtUtils]: Spent 10.72s on a formula simplification. DAG size of input: 574 DAG size of output: 569 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 19:30:48,847 WARN L293 SmtUtils]: Spent 10.80s on a formula simplification. DAG size of input: 574 DAG size of output: 569 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 19:31:37,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [172438964] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:31:37,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 19:31:37,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [4, 4, 4] total 38 [2023-12-02 19:31:37,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527864706] [2023-12-02 19:31:37,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:31:37,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-02 19:31:37,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:31:37,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-02 19:31:37,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1290, Unknown=0, NotChecked=0, Total=1406 [2023-12-02 19:31:37,709 INFO L87 Difference]: Start difference. First operand 380 states and 562 transitions. Second operand has 33 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 10 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2023-12-02 19:32:03,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:32:03,000 INFO L93 Difference]: Finished difference Result 773 states and 1174 transitions. [2023-12-02 19:32:03,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-02 19:32:03,001 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 10 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) Word has length 80 [2023-12-02 19:32:03,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:32:03,004 INFO L225 Difference]: With dead ends: 773 [2023-12-02 19:32:03,004 INFO L226 Difference]: Without dead ends: 470 [2023-12-02 19:32:03,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 120.7s TimeCoverageRelationStatistics Valid=120, Invalid=1362, Unknown=0, NotChecked=0, Total=1482 [2023-12-02 19:32:03,006 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 58 mSDsluCounter, 3452 mSDsCounter, 0 mSdLazyCounter, 3722 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 3648 SdHoareTripleChecker+Invalid, 3732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 3722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.6s IncrementalHoareTripleChecker+Time [2023-12-02 19:32:03,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 3648 Invalid, 3732 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 3722 Invalid, 0 Unknown, 0 Unchecked, 21.6s Time] [2023-12-02 19:32:03,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2023-12-02 19:32:03,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 416. [2023-12-02 19:32:03,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 294 states have (on average 1.445578231292517) internal successors, (425), 297 states have internal predecessors, (425), 93 states have call successors, (93), 28 states have call predecessors, (93), 28 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2023-12-02 19:32:03,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 610 transitions. [2023-12-02 19:32:03,161 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 610 transitions. Word has length 80 [2023-12-02 19:32:03,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:32:03,161 INFO L495 AbstractCegarLoop]: Abstraction has 416 states and 610 transitions. [2023-12-02 19:32:03,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 10 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2023-12-02 19:32:03,161 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 610 transitions. [2023-12-02 19:32:03,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-02 19:32:03,164 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:32:03,164 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:32:03,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44171b-4bfc-416a-902a-483682cefd1b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-02 19:32:03,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44171b-4bfc-416a-902a-483682cefd1b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:32:03,365 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:32:03,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:32:03,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1493508357, now seen corresponding path program 1 times [2023-12-02 19:32:03,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:32:03,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503694455] [2023-12-02 19:32:03,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:32:03,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:32:03,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:32:03,485 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 19:32:03,486 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:32:03,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503694455] [2023-12-02 19:32:03,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503694455] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:32:03,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035610512] [2023-12-02 19:32:03,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:32:03,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:32:03,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44171b-4bfc-416a-902a-483682cefd1b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:32:03,487 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44171b-4bfc-416a-902a-483682cefd1b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:32:03,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44171b-4bfc-416a-902a-483682cefd1b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 19:32:03,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:32:03,763 INFO L262 TraceCheckSpWp]: Trace formula consists of 1003 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 19:32:03,766 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:32:03,793 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 19:32:03,793 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:32:03,851 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 19:32:03,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035610512] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:32:03,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1945529656] [2023-12-02 19:32:03,855 INFO L159 IcfgInterpreter]: Started Sifa with 68 locations of interest [2023-12-02 19:32:03,855 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:32:03,855 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:32:03,856 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:32:03,856 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:33:26,851 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 226 for LOIs [2023-12-02 19:33:27,017 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 240 for LOIs [2023-12-02 19:33:27,389 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:34:23,025 WARN L293 SmtUtils]: Spent 9.29s on a formula simplification. DAG size of input: 505 DAG size of output: 505 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 19:34:32,718 WARN L293 SmtUtils]: Spent 9.37s on a formula simplification. DAG size of input: 505 DAG size of output: 505 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 19:34:42,933 WARN L293 SmtUtils]: Spent 9.86s on a formula simplification. DAG size of input: 511 DAG size of output: 511 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 19:34:53,322 WARN L293 SmtUtils]: Spent 10.01s on a formula simplification. DAG size of input: 509 DAG size of output: 509 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 19:35:03,888 WARN L293 SmtUtils]: Spent 10.10s on a formula simplification. DAG size of input: 513 DAG size of output: 513 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 19:35:14,288 WARN L293 SmtUtils]: Spent 9.96s on a formula simplification. DAG size of input: 511 DAG size of output: 511 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 19:35:24,811 WARN L293 SmtUtils]: Spent 10.08s on a formula simplification. DAG size of input: 515 DAG size of output: 515 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 19:35:35,356 WARN L293 SmtUtils]: Spent 10.05s on a formula simplification. DAG size of input: 513 DAG size of output: 513 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 19:35:45,701 WARN L293 SmtUtils]: Spent 9.87s on a formula simplification. DAG size of input: 517 DAG size of output: 517 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 19:36:00,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1945529656] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:36:00,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 19:36:00,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [4, 4, 4] total 37 [2023-12-02 19:36:00,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245838917] [2023-12-02 19:36:00,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:36:00,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-02 19:36:00,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:36:00,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-02 19:36:00,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1177, Unknown=0, NotChecked=0, Total=1332 [2023-12-02 19:36:00,603 INFO L87 Difference]: Start difference. First operand 416 states and 610 transitions. Second operand has 32 states, 24 states have (on average 1.875) internal successors, (45), 23 states have internal predecessors, (45), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2023-12-02 19:36:17,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:36:17,031 INFO L93 Difference]: Finished difference Result 787 states and 1189 transitions. [2023-12-02 19:36:17,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-02 19:36:17,032 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 24 states have (on average 1.875) internal successors, (45), 23 states have internal predecessors, (45), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) Word has length 79 [2023-12-02 19:36:17,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:36:17,035 INFO L225 Difference]: With dead ends: 787 [2023-12-02 19:36:17,035 INFO L226 Difference]: Without dead ends: 484 [2023-12-02 19:36:17,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 156.3s TimeCoverageRelationStatistics Valid=159, Invalid=1247, Unknown=0, NotChecked=0, Total=1406 [2023-12-02 19:36:17,036 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 52 mSDsluCounter, 3038 mSDsCounter, 0 mSdLazyCounter, 2691 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 3233 SdHoareTripleChecker+Invalid, 2700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2023-12-02 19:36:17,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 3233 Invalid, 2700 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 2691 Invalid, 0 Unknown, 0 Unchecked, 12.9s Time] [2023-12-02 19:36:17,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2023-12-02 19:36:17,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 436. [2023-12-02 19:36:17,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 314 states have (on average 1.4490445859872612) internal successors, (455), 317 states have internal predecessors, (455), 93 states have call successors, (93), 28 states have call predecessors, (93), 28 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2023-12-02 19:36:17,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 640 transitions. [2023-12-02 19:36:17,203 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 640 transitions. Word has length 79 [2023-12-02 19:36:17,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:36:17,203 INFO L495 AbstractCegarLoop]: Abstraction has 436 states and 640 transitions. [2023-12-02 19:36:17,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 24 states have (on average 1.875) internal successors, (45), 23 states have internal predecessors, (45), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2023-12-02 19:36:17,203 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 640 transitions. [2023-12-02 19:36:17,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-02 19:36:17,205 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:36:17,205 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:36:17,212 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44171b-4bfc-416a-902a-483682cefd1b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 19:36:17,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44171b-4bfc-416a-902a-483682cefd1b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:36:17,405 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:36:17,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:36:17,406 INFO L85 PathProgramCache]: Analyzing trace with hash -560088397, now seen corresponding path program 1 times [2023-12-02 19:36:17,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:36:17,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32667889] [2023-12-02 19:36:17,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:36:17,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:36:17,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:36:17,511 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 19:36:17,511 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:36:17,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32667889] [2023-12-02 19:36:17,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32667889] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:36:17,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184658831] [2023-12-02 19:36:17,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:36:17,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:36:17,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44171b-4bfc-416a-902a-483682cefd1b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:36:17,513 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44171b-4bfc-416a-902a-483682cefd1b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:36:17,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d44171b-4bfc-416a-902a-483682cefd1b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 19:36:17,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:36:17,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 1020 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 19:36:17,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:36:17,818 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 19:36:17,818 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:36:17,869 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 19:36:17,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184658831] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:36:17,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1110850249] [2023-12-02 19:36:17,871 INFO L159 IcfgInterpreter]: Started Sifa with 64 locations of interest [2023-12-02 19:36:17,871 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:36:17,872 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:36:17,872 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:36:17,872 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs