./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec0_product22.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c84d9ad-7d4d-4df4-a512-f235260cea7e/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c84d9ad-7d4d-4df4-a512-f235260cea7e/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_5c84d9ad-7d4d-4df4-a512-f235260cea7e/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c84d9ad-7d4d-4df4-a512-f235260cea7e/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec0_product22.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c84d9ad-7d4d-4df4-a512-f235260cea7e/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_5c84d9ad-7d4d-4df4-a512-f235260cea7e/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 646f5b113c7a3ad2f4a2522272ad1b8889776081b2b5bc43fffe0e887ddc48f7 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 13:31:13,262 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 13:31:13,328 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c84d9ad-7d4d-4df4-a512-f235260cea7e/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 13:31:13,334 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 13:31:13,335 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 13:31:13,363 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 13:31:13,363 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 13:31:13,364 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 13:31:13,365 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 13:31:13,365 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 13:31:13,366 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 13:31:13,367 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 13:31:13,367 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 13:31:13,368 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 13:31:13,368 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 13:31:13,369 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 13:31:13,369 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 13:31:13,370 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 13:31:13,370 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 13:31:13,371 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 13:31:13,372 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 13:31:13,376 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 13:31:13,377 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 13:31:13,377 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 13:31:13,377 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 13:31:13,378 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 13:31:13,378 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 13:31:13,379 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 13:31:13,379 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 13:31:13,380 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 13:31:13,380 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 13:31:13,380 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 13:31:13,381 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 13:31:13,381 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 13:31:13,381 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 13:31:13,381 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 13:31:13,382 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 13:31:13,382 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:31:13,382 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 13:31:13,382 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 13:31:13,383 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 13:31:13,383 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 13:31:13,383 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 13:31:13,383 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 13:31:13,383 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 13:31:13,384 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 13:31:13,384 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 13:31:13,384 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_5c84d9ad-7d4d-4df4-a512-f235260cea7e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c84d9ad-7d4d-4df4-a512-f235260cea7e/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 646f5b113c7a3ad2f4a2522272ad1b8889776081b2b5bc43fffe0e887ddc48f7 [2023-12-02 13:31:13,584 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 13:31:13,604 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 13:31:13,607 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 13:31:13,609 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 13:31:13,609 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 13:31:13,610 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c84d9ad-7d4d-4df4-a512-f235260cea7e/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/product-lines/email_spec0_product22.cil.c [2023-12-02 13:31:16,423 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 13:31:16,687 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 13:31:16,688 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c84d9ad-7d4d-4df4-a512-f235260cea7e/sv-benchmarks/c/product-lines/email_spec0_product22.cil.c [2023-12-02 13:31:16,713 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c84d9ad-7d4d-4df4-a512-f235260cea7e/bin/utaipan-verify-nQ1chXbOIh/data/c46439c58/bae7f8f15cae4585a4cca4b064419d97/FLAG1e7eac0f9 [2023-12-02 13:31:16,726 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c84d9ad-7d4d-4df4-a512-f235260cea7e/bin/utaipan-verify-nQ1chXbOIh/data/c46439c58/bae7f8f15cae4585a4cca4b064419d97 [2023-12-02 13:31:16,728 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 13:31:16,729 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 13:31:16,730 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 13:31:16,730 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 13:31:16,734 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 13:31:16,735 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:31:16" (1/1) ... [2023-12-02 13:31:16,736 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d03d70a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:31:16, skipping insertion in model container [2023-12-02 13:31:16,736 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:31:16" (1/1) ... [2023-12-02 13:31:16,811 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 13:31:17,009 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_5c84d9ad-7d4d-4df4-a512-f235260cea7e/sv-benchmarks/c/product-lines/email_spec0_product22.cil.c[4724,4737] [2023-12-02 13:31:17,256 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:31:17,272 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 13:31:17,282 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [48] [2023-12-02 13:31:17,284 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [66] [2023-12-02 13:31:17,284 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [189] [2023-12-02 13:31:17,284 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [198] [2023-12-02 13:31:17,284 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [236] [2023-12-02 13:31:17,284 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [602] [2023-12-02 13:31:17,285 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [1007] [2023-12-02 13:31:17,285 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1314] [2023-12-02 13:31:17,285 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"DecryptForward_spec.i","") [1618] [2023-12-02 13:31:17,285 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [1637] [2023-12-02 13:31:17,286 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2702] [2023-12-02 13:31:17,297 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c84d9ad-7d4d-4df4-a512-f235260cea7e/sv-benchmarks/c/product-lines/email_spec0_product22.cil.c[4724,4737] [2023-12-02 13:31:17,384 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:31:17,413 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:31:17,420 INFO L206 MainTranslator]: Completed translation [2023-12-02 13:31:17,421 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:31:17 WrapperNode [2023-12-02 13:31:17,421 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 13:31:17,422 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 13:31:17,422 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 13:31:17,422 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 13:31:17,430 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:31:17" (1/1) ... [2023-12-02 13:31:17,458 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:31:17" (1/1) ... [2023-12-02 13:31:17,514 INFO L138 Inliner]: procedures = 128, calls = 205, calls flagged for inlining = 58, calls inlined = 53, statements flattened = 1032 [2023-12-02 13:31:17,514 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 13:31:17,515 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 13:31:17,515 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 13:31:17,515 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 13:31:17,525 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:31:17" (1/1) ... [2023-12-02 13:31:17,525 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:31:17" (1/1) ... [2023-12-02 13:31:17,533 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:31:17" (1/1) ... [2023-12-02 13:31:17,533 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:31:17" (1/1) ... [2023-12-02 13:31:17,557 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:31:17" (1/1) ... [2023-12-02 13:31:17,567 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:31:17" (1/1) ... [2023-12-02 13:31:17,573 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:31:17" (1/1) ... [2023-12-02 13:31:17,578 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:31:17" (1/1) ... [2023-12-02 13:31:17,589 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 13:31:17,590 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 13:31:17,590 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 13:31:17,591 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 13:31:17,591 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:31:17" (1/1) ... [2023-12-02 13:31:17,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:31:17,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c84d9ad-7d4d-4df4-a512-f235260cea7e/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:31:17,625 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c84d9ad-7d4d-4df4-a512-f235260cea7e/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 13:31:17,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c84d9ad-7d4d-4df4-a512-f235260cea7e/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 13:31:17,661 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2023-12-02 13:31:17,661 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2023-12-02 13:31:17,661 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2023-12-02 13:31:17,662 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2023-12-02 13:31:17,662 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-12-02 13:31:17,662 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-12-02 13:31:17,662 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-12-02 13:31:17,662 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-12-02 13:31:17,662 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-12-02 13:31:17,662 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-12-02 13:31:17,663 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-12-02 13:31:17,663 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-12-02 13:31:17,663 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2023-12-02 13:31:17,663 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2023-12-02 13:31:17,663 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-12-02 13:31:17,663 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-12-02 13:31:17,664 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2023-12-02 13:31:17,664 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-12-02 13:31:17,664 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-12-02 13:31:17,664 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2023-12-02 13:31:17,664 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2023-12-02 13:31:17,664 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-12-02 13:31:17,664 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-12-02 13:31:17,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 13:31:17,665 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-12-02 13:31:17,665 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-12-02 13:31:17,665 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-12-02 13:31:17,665 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-12-02 13:31:17,665 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-12-02 13:31:17,665 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-12-02 13:31:17,666 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-12-02 13:31:17,666 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-12-02 13:31:17,666 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2023-12-02 13:31:17,666 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2023-12-02 13:31:17,666 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-12-02 13:31:17,666 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-12-02 13:31:17,666 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2023-12-02 13:31:17,667 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2023-12-02 13:31:17,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 13:31:17,667 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-12-02 13:31:17,667 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-12-02 13:31:17,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 13:31:17,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 13:31:17,905 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 13:31:17,907 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 13:31:18,578 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 13:31:18,962 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 13:31:18,963 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 13:31:18,964 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:31:18 BoogieIcfgContainer [2023-12-02 13:31:18,964 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 13:31:18,967 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 13:31:18,967 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 13:31:18,970 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 13:31:18,971 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:31:16" (1/3) ... [2023-12-02 13:31:18,971 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bf3e825 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:31:18, skipping insertion in model container [2023-12-02 13:31:18,971 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:31:17" (2/3) ... [2023-12-02 13:31:18,972 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bf3e825 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:31:18, skipping insertion in model container [2023-12-02 13:31:18,972 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:31:18" (3/3) ... [2023-12-02 13:31:18,973 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec0_product22.cil.c [2023-12-02 13:31:18,993 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 13:31:18,993 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 13:31:19,046 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 13:31:19,053 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;@23450124, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 13:31:19,053 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 13:31:19,059 INFO L276 IsEmpty]: Start isEmpty. Operand has 171 states, 100 states have (on average 1.34) internal successors, (134), 104 states have internal predecessors, (134), 50 states have call successors, (50), 19 states have call predecessors, (50), 19 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-02 13:31:19,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-02 13:31:19,071 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:31:19,072 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:31:19,072 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:31:19,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:31:19,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1840430806, now seen corresponding path program 1 times [2023-12-02 13:31:19,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:31:19,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925442685] [2023-12-02 13:31:19,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:31:19,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:31:19,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:31:19,416 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 13:31:19,416 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:31:19,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925442685] [2023-12-02 13:31:19,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925442685] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:31:19,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:31:19,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 13:31:19,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25222736] [2023-12-02 13:31:19,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:31:19,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 13:31:19,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:31:19,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 13:31:19,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 13:31:19,452 INFO L87 Difference]: Start difference. First operand has 171 states, 100 states have (on average 1.34) internal successors, (134), 104 states have internal predecessors, (134), 50 states have call successors, (50), 19 states have call predecessors, (50), 19 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 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 13:31:19,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:31:19,573 INFO L93 Difference]: Finished difference Result 259 states and 346 transitions. [2023-12-02 13:31:19,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 13:31:19,576 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 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 72 [2023-12-02 13:31:19,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:31:19,588 INFO L225 Difference]: With dead ends: 259 [2023-12-02 13:31:19,588 INFO L226 Difference]: Without dead ends: 168 [2023-12-02 13:31:19,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 13:31:19,595 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:31:19,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 196 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 13:31:19,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-12-02 13:31:19,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2023-12-02 13:31:19,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 98 states have (on average 1.3061224489795917) internal successors, (128), 101 states have internal predecessors, (128), 50 states have call successors, (50), 19 states have call predecessors, (50), 19 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2023-12-02 13:31:19,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 227 transitions. [2023-12-02 13:31:19,648 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 227 transitions. Word has length 72 [2023-12-02 13:31:19,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:31:19,649 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 227 transitions. [2023-12-02 13:31:19,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 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 13:31:19,650 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 227 transitions. [2023-12-02 13:31:19,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-02 13:31:19,655 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:31:19,655 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:31:19,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 13:31:19,656 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:31:19,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:31:19,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1561075150, now seen corresponding path program 1 times [2023-12-02 13:31:19,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:31:19,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565321616] [2023-12-02 13:31:19,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:31:19,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:31:19,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:31:19,845 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 13:31:19,845 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:31:19,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565321616] [2023-12-02 13:31:19,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565321616] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:31:19,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:31:19,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:31:19,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378631670] [2023-12-02 13:31:19,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:31:19,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:31:19,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:31:19,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:31:19,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:31:19,849 INFO L87 Difference]: Start difference. First operand 168 states and 227 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 13:31:19,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:31:19,961 INFO L93 Difference]: Finished difference Result 255 states and 334 transitions. [2023-12-02 13:31:19,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:31:19,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 73 [2023-12-02 13:31:19,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:31:19,964 INFO L225 Difference]: With dead ends: 255 [2023-12-02 13:31:19,965 INFO L226 Difference]: Without dead ends: 170 [2023-12-02 13:31:19,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:31:19,968 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 0 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:31:19,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 385 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 13:31:19,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2023-12-02 13:31:19,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2023-12-02 13:31:19,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 100 states have (on average 1.3) internal successors, (130), 103 states have internal predecessors, (130), 50 states have call successors, (50), 19 states have call predecessors, (50), 19 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2023-12-02 13:31:19,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 229 transitions. [2023-12-02 13:31:19,990 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 229 transitions. Word has length 73 [2023-12-02 13:31:19,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:31:19,990 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 229 transitions. [2023-12-02 13:31:19,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 13:31:19,991 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 229 transitions. [2023-12-02 13:31:19,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-02 13:31:19,994 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:31:19,994 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:31:19,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 13:31:19,995 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:31:19,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:31:19,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1421382581, now seen corresponding path program 1 times [2023-12-02 13:31:19,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:31:19,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499649797] [2023-12-02 13:31:19,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:31:19,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:31:20,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:31:20,133 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 13:31:20,133 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:31:20,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499649797] [2023-12-02 13:31:20,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499649797] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:31:20,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:31:20,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:31:20,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363157100] [2023-12-02 13:31:20,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:31:20,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:31:20,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:31:20,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:31:20,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:31:20,137 INFO L87 Difference]: Start difference. First operand 170 states and 229 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (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 13:31:20,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:31:20,252 INFO L93 Difference]: Finished difference Result 370 states and 517 transitions. [2023-12-02 13:31:20,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:31:20,253 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (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 78 [2023-12-02 13:31:20,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:31:20,256 INFO L225 Difference]: With dead ends: 370 [2023-12-02 13:31:20,256 INFO L226 Difference]: Without dead ends: 218 [2023-12-02 13:31:20,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:31:20,259 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 57 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:31:20,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 395 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 13:31:20,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2023-12-02 13:31:20,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 213. [2023-12-02 13:31:20,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 132 states have (on average 1.3863636363636365) internal successors, (183), 135 states have internal predecessors, (183), 61 states have call successors, (61), 19 states have call predecessors, (61), 19 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-02 13:31:20,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 304 transitions. [2023-12-02 13:31:20,288 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 304 transitions. Word has length 78 [2023-12-02 13:31:20,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:31:20,289 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 304 transitions. [2023-12-02 13:31:20,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (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 13:31:20,289 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 304 transitions. [2023-12-02 13:31:20,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-02 13:31:20,292 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:31:20,293 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:31:20,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 13:31:20,293 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:31:20,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:31:20,294 INFO L85 PathProgramCache]: Analyzing trace with hash -147420177, now seen corresponding path program 1 times [2023-12-02 13:31:20,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:31:20,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669099811] [2023-12-02 13:31:20,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:31:20,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:31:20,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:31:20,492 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 13:31:20,493 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:31:20,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669099811] [2023-12-02 13:31:20,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669099811] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:31:20,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044451671] [2023-12-02 13:31:20,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:31:20,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:31:20,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c84d9ad-7d4d-4df4-a512-f235260cea7e/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:31:20,502 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c84d9ad-7d4d-4df4-a512-f235260cea7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:31:20,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c84d9ad-7d4d-4df4-a512-f235260cea7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 13:31:20,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:31:20,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 972 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 13:31:20,846 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:31:20,907 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 13:31:20,907 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:31:20,982 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 13:31:20,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044451671] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:31:20,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1431935503] [2023-12-02 13:31:21,022 INFO L159 IcfgInterpreter]: Started Sifa with 64 locations of interest [2023-12-02 13:31:21,022 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:31:21,026 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:31:21,032 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:31:21,032 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:32:07,405 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 235 for LOIs [2023-12-02 13:32:07,681 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 225 for LOIs [2023-12-02 13:32:07,847 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:33:05,107 WARN L293 SmtUtils]: Spent 9.38s on a formula simplification. DAG size of input: 486 DAG size of output: 486 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:33:15,335 WARN L293 SmtUtils]: Spent 9.90s on a formula simplification. DAG size of input: 487 DAG size of output: 486 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:33:26,769 WARN L293 SmtUtils]: Spent 11.06s on a formula simplification. DAG size of input: 493 DAG size of output: 492 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:33:37,710 WARN L293 SmtUtils]: Spent 10.51s on a formula simplification. DAG size of input: 491 DAG size of output: 490 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:33:41,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1431935503] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:33:41,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 13:33:41,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [4, 4, 4] total 29 [2023-12-02 13:33:41,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29117177] [2023-12-02 13:33:41,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:33:41,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-02 13:33:41,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:33:41,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-02 13:33:41,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=726, Unknown=0, NotChecked=0, Total=812 [2023-12-02 13:33:41,436 INFO L87 Difference]: Start difference. First operand 213 states and 304 transitions. Second operand has 24 states, 16 states have (on average 2.5625) internal successors, (41), 15 states have internal predecessors, (41), 7 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2023-12-02 13:33:55,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:33:55,137 INFO L93 Difference]: Finished difference Result 471 states and 704 transitions. [2023-12-02 13:33:55,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-02 13:33:55,137 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 16 states have (on average 2.5625) internal successors, (41), 15 states have internal predecessors, (41), 7 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) Word has length 79 [2023-12-02 13:33:55,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:33:55,140 INFO L225 Difference]: With dead ends: 471 [2023-12-02 13:33:55,140 INFO L226 Difference]: Without dead ends: 276 [2023-12-02 13:33:55,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 96.9s TimeCoverageRelationStatistics Valid=91, Invalid=779, Unknown=0, NotChecked=0, Total=870 [2023-12-02 13:33:55,142 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 83 mSDsluCounter, 2442 mSDsCounter, 0 mSdLazyCounter, 2208 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 2648 SdHoareTripleChecker+Invalid, 2218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 2208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:33:55,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 2648 Invalid, 2218 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 2208 Invalid, 0 Unknown, 0 Unchecked, 10.1s Time] [2023-12-02 13:33:55,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2023-12-02 13:33:55,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 236. [2023-12-02 13:33:55,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 154 states have (on average 1.4025974025974026) internal successors, (216), 157 states have internal predecessors, (216), 61 states have call successors, (61), 20 states have call predecessors, (61), 20 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-02 13:33:55,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 337 transitions. [2023-12-02 13:33:55,227 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 337 transitions. Word has length 79 [2023-12-02 13:33:55,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:33:55,228 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 337 transitions. [2023-12-02 13:33:55,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 16 states have (on average 2.5625) internal successors, (41), 15 states have internal predecessors, (41), 7 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2023-12-02 13:33:55,229 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 337 transitions. [2023-12-02 13:33:55,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-02 13:33:55,231 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:33:55,232 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:33:55,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c84d9ad-7d4d-4df4-a512-f235260cea7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 13:33:55,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c84d9ad-7d4d-4df4-a512-f235260cea7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:33:55,439 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:33:55,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:33:55,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1491613780, now seen corresponding path program 1 times [2023-12-02 13:33:55,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:33:55,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168494599] [2023-12-02 13:33:55,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:33:55,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:33:55,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:33:55,510 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 13:33:55,510 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:33:55,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168494599] [2023-12-02 13:33:55,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168494599] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:33:55,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:33:55,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:33:55,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692722644] [2023-12-02 13:33:55,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:33:55,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:33:55,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:33:55,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:33:55,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:33:55,512 INFO L87 Difference]: Start difference. First operand 236 states and 337 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-02 13:33:55,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:33:55,719 INFO L93 Difference]: Finished difference Result 565 states and 838 transitions. [2023-12-02 13:33:55,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:33:55,719 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 84 [2023-12-02 13:33:55,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:33:55,723 INFO L225 Difference]: With dead ends: 565 [2023-12-02 13:33:55,723 INFO L226 Difference]: Without dead ends: 353 [2023-12-02 13:33:55,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:33:55,725 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 55 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 391 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 13:33:55,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 391 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 13:33:55,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2023-12-02 13:33:55,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 348. [2023-12-02 13:33:55,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 241 states have (on average 1.4605809128630705) internal successors, (352), 244 states have internal predecessors, (352), 86 states have call successors, (86), 20 states have call predecessors, (86), 20 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2023-12-02 13:33:55,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 523 transitions. [2023-12-02 13:33:55,828 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 523 transitions. Word has length 84 [2023-12-02 13:33:55,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:33:55,828 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 523 transitions. [2023-12-02 13:33:55,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-02 13:33:55,829 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 523 transitions. [2023-12-02 13:33:55,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-02 13:33:55,832 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:33:55,832 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:33:55,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 13:33:55,832 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:33:55,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:33:55,833 INFO L85 PathProgramCache]: Analyzing trace with hash 344084035, now seen corresponding path program 1 times [2023-12-02 13:33:55,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:33:55,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096213837] [2023-12-02 13:33:55,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:33:55,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:33:55,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:33:55,967 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 13:33:55,967 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:33:55,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096213837] [2023-12-02 13:33:55,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096213837] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:33:55,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144958819] [2023-12-02 13:33:55,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:33:55,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:33:55,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c84d9ad-7d4d-4df4-a512-f235260cea7e/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:33:55,969 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c84d9ad-7d4d-4df4-a512-f235260cea7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:33:55,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c84d9ad-7d4d-4df4-a512-f235260cea7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 13:33:56,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:33:56,263 INFO L262 TraceCheckSpWp]: Trace formula consists of 999 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 13:33:56,269 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:33:56,294 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 13:33:56,295 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:33:56,358 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 13:33:56,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144958819] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:33:56,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1356537795] [2023-12-02 13:33:56,362 INFO L159 IcfgInterpreter]: Started Sifa with 68 locations of interest [2023-12-02 13:33:56,362 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:33:56,363 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:33:56,363 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:33:56,364 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:35:04,702 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 235 for LOIs [2023-12-02 13:35:04,928 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 466 for LOIs [2023-12-02 13:35:07,112 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:35:27,457 WARN L293 SmtUtils]: Spent 6.08s on a formula simplification. DAG size of input: 466 DAG size of output: 466 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:35:36,746 WARN L293 SmtUtils]: Spent 9.11s on a formula simplification. DAG size of input: 496 DAG size of output: 491 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:36:13,831 WARN L293 SmtUtils]: Spent 8.72s on a formula simplification. DAG size of input: 489 DAG size of output: 489 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:36:23,007 WARN L293 SmtUtils]: Spent 8.86s on a formula simplification. DAG size of input: 490 DAG size of output: 489 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:36:32,679 WARN L293 SmtUtils]: Spent 9.29s on a formula simplification. DAG size of input: 496 DAG size of output: 495 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:36:42,434 WARN L293 SmtUtils]: Spent 9.36s on a formula simplification. DAG size of input: 494 DAG size of output: 493 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:37:00,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1356537795] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:37:00,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 13:37:00,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [4, 4, 4] total 33 [2023-12-02 13:37:00,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415847319] [2023-12-02 13:37:00,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:37:00,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-02 13:37:00,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:37:00,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-02 13:37:00,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=941, Unknown=0, NotChecked=0, Total=1056 [2023-12-02 13:37:00,230 INFO L87 Difference]: Start difference. First operand 348 states and 523 transitions. Second operand has 28 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 18 states have internal predecessors, (44), 8 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2023-12-02 13:37:17,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:37:17,163 INFO L93 Difference]: Finished difference Result 712 states and 1099 transitions. [2023-12-02 13:37:17,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-02 13:37:17,164 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 18 states have internal predecessors, (44), 8 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) Word has length 85 [2023-12-02 13:37:17,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:37:17,167 INFO L225 Difference]: With dead ends: 712 [2023-12-02 13:37:17,167 INFO L226 Difference]: Without dead ends: 427 [2023-12-02 13:37:17,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 116.3s TimeCoverageRelationStatistics Valid=120, Invalid=1002, Unknown=0, NotChecked=0, Total=1122 [2023-12-02 13:37:17,169 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 145 mSDsluCounter, 2621 mSDsCounter, 0 mSdLazyCounter, 2678 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 2799 SdHoareTripleChecker+Invalid, 2687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2023-12-02 13:37:17,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 2799 Invalid, 2687 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 2678 Invalid, 0 Unknown, 0 Unchecked, 13.4s Time] [2023-12-02 13:37:17,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2023-12-02 13:37:17,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 362. [2023-12-02 13:37:17,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 253 states have (on average 1.458498023715415) internal successors, (369), 256 states have internal predecessors, (369), 87 states have call successors, (87), 21 states have call predecessors, (87), 21 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2023-12-02 13:37:17,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 542 transitions. [2023-12-02 13:37:17,282 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 542 transitions. Word has length 85 [2023-12-02 13:37:17,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:37:17,282 INFO L495 AbstractCegarLoop]: Abstraction has 362 states and 542 transitions. [2023-12-02 13:37:17,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 18 states have internal predecessors, (44), 8 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2023-12-02 13:37:17,283 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 542 transitions. [2023-12-02 13:37:17,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-02 13:37:17,285 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:37:17,286 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:37:17,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c84d9ad-7d4d-4df4-a512-f235260cea7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-02 13:37:17,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c84d9ad-7d4d-4df4-a512-f235260cea7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:37:17,488 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:37:17,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:37:17,489 INFO L85 PathProgramCache]: Analyzing trace with hash -762519698, now seen corresponding path program 1 times [2023-12-02 13:37:17,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:37:17,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849892029] [2023-12-02 13:37:17,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:37:17,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:37:17,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:37:17,735 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 13:37:17,735 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:37:17,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849892029] [2023-12-02 13:37:17,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849892029] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:37:17,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42674174] [2023-12-02 13:37:17,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:37:17,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:37:17,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c84d9ad-7d4d-4df4-a512-f235260cea7e/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:37:17,737 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c84d9ad-7d4d-4df4-a512-f235260cea7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:37:17,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c84d9ad-7d4d-4df4-a512-f235260cea7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 13:37:18,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:37:18,030 INFO L262 TraceCheckSpWp]: Trace formula consists of 1077 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 13:37:18,036 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:37:18,057 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 13:37:18,058 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:37:18,120 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 13:37:18,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42674174] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:37:18,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [730927918] [2023-12-02 13:37:18,124 INFO L159 IcfgInterpreter]: Started Sifa with 73 locations of interest [2023-12-02 13:37:18,124 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:37:18,125 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:37:18,125 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:37:18,125 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:39:11,302 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 235 for LOIs [2023-12-02 13:39:11,526 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 533 for LOIs [2023-12-02 13:39:13,190 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 542 for LOIs [2023-12-02 13:39:14,922 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 457 for LOIs [2023-12-02 13:39:15,637 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 225 for LOIs [2023-12-02 13:39:15,805 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:40:57,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [730927918] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:40:57,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 13:40:57,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [4, 4, 4] total 38 [2023-12-02 13:40:57,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354487336] [2023-12-02 13:40:57,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:40:57,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-02 13:40:57,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:40:57,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-02 13:40:57,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1291, Unknown=0, NotChecked=0, Total=1406 [2023-12-02 13:40:57,531 INFO L87 Difference]: Start difference. First operand 362 states and 542 transitions. Second operand has 33 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 18 states have internal predecessors, (44), 10 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) [2023-12-02 13:41:20,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:41:20,917 INFO L93 Difference]: Finished difference Result 737 states and 1134 transitions. [2023-12-02 13:41:20,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-02 13:41:20,918 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 18 states have internal predecessors, (44), 10 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) Word has length 88 [2023-12-02 13:41:20,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:41:20,921 INFO L225 Difference]: With dead ends: 737 [2023-12-02 13:41:20,921 INFO L226 Difference]: Without dead ends: 452 [2023-12-02 13:41:20,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 105.0s TimeCoverageRelationStatistics Valid=120, Invalid=1362, Unknown=0, NotChecked=0, Total=1482 [2023-12-02 13:41:20,924 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 58 mSDsluCounter, 3122 mSDsCounter, 0 mSdLazyCounter, 3524 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 3298 SdHoareTripleChecker+Invalid, 3534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 3524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.8s IncrementalHoareTripleChecker+Time [2023-12-02 13:41:20,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 3298 Invalid, 3534 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 3524 Invalid, 0 Unknown, 0 Unchecked, 19.8s Time] [2023-12-02 13:41:20,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2023-12-02 13:41:21,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 398. [2023-12-02 13:41:21,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 283 states have (on average 1.452296819787986) internal successors, (411), 286 states have internal predecessors, (411), 90 states have call successors, (90), 24 states have call predecessors, (90), 24 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) [2023-12-02 13:41:21,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 590 transitions. [2023-12-02 13:41:21,106 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 590 transitions. Word has length 88 [2023-12-02 13:41:21,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:41:21,106 INFO L495 AbstractCegarLoop]: Abstraction has 398 states and 590 transitions. [2023-12-02 13:41:21,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 18 states have internal predecessors, (44), 10 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) [2023-12-02 13:41:21,106 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 590 transitions. [2023-12-02 13:41:21,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-02 13:41:21,108 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:41:21,108 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:41:21,114 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c84d9ad-7d4d-4df4-a512-f235260cea7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 13:41:21,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c84d9ad-7d4d-4df4-a512-f235260cea7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-12-02 13:41:21,309 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:41:21,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:41:21,309 INFO L85 PathProgramCache]: Analyzing trace with hash -580786665, now seen corresponding path program 1 times [2023-12-02 13:41:21,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:41:21,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780204543] [2023-12-02 13:41:21,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:41:21,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:41:21,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:41:21,410 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 13:41:21,410 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:41:21,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780204543] [2023-12-02 13:41:21,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780204543] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:41:21,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340947970] [2023-12-02 13:41:21,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:41:21,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:41:21,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c84d9ad-7d4d-4df4-a512-f235260cea7e/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:41:21,412 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c84d9ad-7d4d-4df4-a512-f235260cea7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:41:21,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c84d9ad-7d4d-4df4-a512-f235260cea7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 13:41:21,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:41:21,695 INFO L262 TraceCheckSpWp]: Trace formula consists of 996 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 13:41:21,699 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:41:21,725 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 13:41:21,725 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:41:21,785 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 13:41:21,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340947970] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:41:21,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [229200481] [2023-12-02 13:41:21,789 INFO L159 IcfgInterpreter]: Started Sifa with 72 locations of interest [2023-12-02 13:41:21,789 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:41:21,790 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:41:21,790 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:41:21,790 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:42:27,186 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 235 for LOIs [2023-12-02 13:42:27,453 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 225 for LOIs [2023-12-02 13:42:27,618 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:43:21,588 WARN L293 SmtUtils]: Spent 9.14s on a formula simplification. DAG size of input: 494 DAG size of output: 494 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:43:31,045 WARN L293 SmtUtils]: Spent 9.16s on a formula simplification. DAG size of input: 495 DAG size of output: 494 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:43:41,344 WARN L293 SmtUtils]: Spent 9.94s on a formula simplification. DAG size of input: 501 DAG size of output: 500 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:43:51,484 WARN L293 SmtUtils]: Spent 9.70s on a formula simplification. DAG size of input: 499 DAG size of output: 498 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:44:24,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [229200481] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:44:24,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 13:44:24,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [4, 4, 4] total 37 [2023-12-02 13:44:24,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547771004] [2023-12-02 13:44:24,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:44:24,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-02 13:44:24,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:44:24,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-02 13:44:24,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1178, Unknown=0, NotChecked=0, Total=1332 [2023-12-02 13:44:24,586 INFO L87 Difference]: Start difference. First operand 398 states and 590 transitions. Second operand has 32 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 7 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2023-12-02 13:44:39,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:44:39,638 INFO L93 Difference]: Finished difference Result 751 states and 1149 transitions. [2023-12-02 13:44:39,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-02 13:44:39,639 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 7 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) Word has length 87 [2023-12-02 13:44:39,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:44:39,642 INFO L225 Difference]: With dead ends: 751 [2023-12-02 13:44:39,642 INFO L226 Difference]: Without dead ends: 466 [2023-12-02 13:44:39,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 120.2s TimeCoverageRelationStatistics Valid=159, Invalid=1247, Unknown=0, NotChecked=0, Total=1406 [2023-12-02 13:44:39,644 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 132 mSDsluCounter, 2651 mSDsCounter, 0 mSdLazyCounter, 2597 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 2824 SdHoareTripleChecker+Invalid, 2606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2023-12-02 13:44:39,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 2824 Invalid, 2606 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 2597 Invalid, 0 Unknown, 0 Unchecked, 11.4s Time] [2023-12-02 13:44:39,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2023-12-02 13:44:39,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 418. [2023-12-02 13:44:39,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 303 states have (on average 1.4554455445544554) internal successors, (441), 306 states have internal predecessors, (441), 90 states have call successors, (90), 24 states have call predecessors, (90), 24 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) [2023-12-02 13:44:39,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 620 transitions. [2023-12-02 13:44:39,814 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 620 transitions. Word has length 87 [2023-12-02 13:44:39,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:44:39,814 INFO L495 AbstractCegarLoop]: Abstraction has 418 states and 620 transitions. [2023-12-02 13:44:39,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 7 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2023-12-02 13:44:39,815 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 620 transitions. [2023-12-02 13:44:39,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-02 13:44:39,817 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:44:39,817 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:44:39,824 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c84d9ad-7d4d-4df4-a512-f235260cea7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 13:44:40,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c84d9ad-7d4d-4df4-a512-f235260cea7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:44:40,018 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:44:40,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:44:40,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1776850383, now seen corresponding path program 1 times [2023-12-02 13:44:40,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:44:40,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642926960] [2023-12-02 13:44:40,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:44:40,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:44:40,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:44:40,849 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-02 13:44:40,849 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:44:40,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642926960] [2023-12-02 13:44:40,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642926960] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:44:40,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:44:40,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-12-02 13:44:40,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651085805] [2023-12-02 13:44:40,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:44:40,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-02 13:44:40,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:44:40,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-02 13:44:40,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2023-12-02 13:44:40,852 INFO L87 Difference]: Start difference. First operand 418 states and 620 transitions. Second operand has 19 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 16 states have internal predecessors, (45), 9 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2023-12-02 13:44:42,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:44:42,452 INFO L93 Difference]: Finished difference Result 544 states and 787 transitions. [2023-12-02 13:44:42,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-02 13:44:42,453 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 16 states have internal predecessors, (45), 9 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) Word has length 90 [2023-12-02 13:44:42,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:44:42,456 INFO L225 Difference]: With dead ends: 544 [2023-12-02 13:44:42,457 INFO L226 Difference]: Without dead ends: 527 [2023-12-02 13:44:42,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=174, Invalid=948, Unknown=0, NotChecked=0, Total=1122 [2023-12-02 13:44:42,458 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 326 mSDsluCounter, 2467 mSDsCounter, 0 mSdLazyCounter, 2401 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 2669 SdHoareTripleChecker+Invalid, 2532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 2401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:44:42,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 2669 Invalid, 2532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 2401 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 13:44:42,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2023-12-02 13:44:42,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 519. [2023-12-02 13:44:42,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 364 states have (on average 1.4093406593406594) internal successors, (513), 367 states have internal predecessors, (513), 119 states have call successors, (119), 35 states have call predecessors, (119), 35 states have return successors, (119), 118 states have call predecessors, (119), 117 states have call successors, (119) [2023-12-02 13:44:42,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 751 transitions. [2023-12-02 13:44:42,637 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 751 transitions. Word has length 90 [2023-12-02 13:44:42,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:44:42,637 INFO L495 AbstractCegarLoop]: Abstraction has 519 states and 751 transitions. [2023-12-02 13:44:42,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 16 states have internal predecessors, (45), 9 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2023-12-02 13:44:42,637 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 751 transitions. [2023-12-02 13:44:42,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-02 13:44:42,639 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:44:42,639 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:44:42,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-02 13:44:42,640 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:44:42,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:44:42,640 INFO L85 PathProgramCache]: Analyzing trace with hash -366500982, now seen corresponding path program 1 times [2023-12-02 13:44:42,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:44:42,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998258963] [2023-12-02 13:44:42,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:44:42,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:44:42,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:44:42,780 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 13:44:42,781 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:44:42,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998258963] [2023-12-02 13:44:42,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998258963] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:44:42,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631024013] [2023-12-02 13:44:42,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:44:42,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:44:42,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c84d9ad-7d4d-4df4-a512-f235260cea7e/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:44:42,782 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c84d9ad-7d4d-4df4-a512-f235260cea7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:44:42,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c84d9ad-7d4d-4df4-a512-f235260cea7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 13:44:43,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:44:43,069 INFO L262 TraceCheckSpWp]: Trace formula consists of 1047 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 13:44:43,073 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:44:43,095 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 13:44:43,095 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:44:43,142 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 13:44:43,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631024013] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:44:43,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [899405235] [2023-12-02 13:44:43,145 INFO L159 IcfgInterpreter]: Started Sifa with 74 locations of interest [2023-12-02 13:44:43,145 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:44:43,145 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:44:43,145 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:44:43,146 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs