./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec11_product30.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23cbf46-f9e7-4be3-bd9c-25b0c3fb893e/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23cbf46-f9e7-4be3-bd9c-25b0c3fb893e/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23cbf46-f9e7-4be3-bd9c-25b0c3fb893e/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23cbf46-f9e7-4be3-bd9c-25b0c3fb893e/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_product30.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23cbf46-f9e7-4be3-bd9c-25b0c3fb893e/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23cbf46-f9e7-4be3-bd9c-25b0c3fb893e/bin/utaipan-verify-DbMuA5NWw2 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e4fb36b23f327758af91661b12ca1735faf7949901dbd5c1543c17ea0384ceb9 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:23:04,283 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:23:04,400 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23cbf46-f9e7-4be3-bd9c-25b0c3fb893e/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-02 12:23:04,412 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:23:04,413 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:23:04,462 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:23:04,463 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:23:04,463 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:23:04,464 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:23:04,465 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:23:04,465 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:23:04,466 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:23:04,466 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:23:04,467 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:23:04,467 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:23:04,467 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:23:04,468 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:23:04,468 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:23:04,469 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:23:04,469 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:23:04,470 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:23:04,474 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:23:04,475 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:23:04,475 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:23:04,476 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:23:04,476 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:23:04,477 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:23:04,477 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:23:04,477 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:23:04,478 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:23:04,478 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:23:04,479 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:23:04,479 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:23:04,479 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:23:04,480 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:23:04,480 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:23:04,481 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:23:04,481 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:23:04,482 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:23:04,483 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:23:04,483 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:23:04,484 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:23:04,484 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:23:04,486 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:23:04,486 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:23:04,487 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:23:04,487 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:23:04,487 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_e23cbf46-f9e7-4be3-bd9c-25b0c3fb893e/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23cbf46-f9e7-4be3-bd9c-25b0c3fb893e/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4fb36b23f327758af91661b12ca1735faf7949901dbd5c1543c17ea0384ceb9 [2024-11-02 12:23:04,823 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:23:04,860 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:23:04,863 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:23:04,865 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:23:04,867 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:23:04,868 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23cbf46-f9e7-4be3-bd9c-25b0c3fb893e/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/product-lines/email_spec11_product30.cil.c Unable to find full path for "g++" [2024-11-02 12:23:07,367 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:23:07,723 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:23:07,724 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23cbf46-f9e7-4be3-bd9c-25b0c3fb893e/sv-benchmarks/c/product-lines/email_spec11_product30.cil.c [2024-11-02 12:23:07,760 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23cbf46-f9e7-4be3-bd9c-25b0c3fb893e/bin/utaipan-verify-DbMuA5NWw2/data/d685c1d4f/6dd90e6545aa48a290fe4df63970a263/FLAG2e2183894 [2024-11-02 12:23:07,782 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23cbf46-f9e7-4be3-bd9c-25b0c3fb893e/bin/utaipan-verify-DbMuA5NWw2/data/d685c1d4f/6dd90e6545aa48a290fe4df63970a263 [2024-11-02 12:23:07,787 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:23:07,789 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:23:07,790 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:23:07,791 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:23:07,805 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:23:07,807 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:23:07" (1/1) ... [2024-11-02 12:23:07,811 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41dd2c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:23:07, skipping insertion in model container [2024-11-02 12:23:07,812 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:23:07" (1/1) ... [2024-11-02 12:23:07,924 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:23:08,622 WARN L251 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_e23cbf46-f9e7-4be3-bd9c-25b0c3fb893e/sv-benchmarks/c/product-lines/email_spec11_product30.cil.c[29507,29520] [2024-11-02 12:23:08,795 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:23:08,828 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:23:08,850 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [48] [2024-11-02 12:23:08,855 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [443] [2024-11-02 12:23:08,856 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [668] [2024-11-02 12:23:08,856 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"DecryptAutoResponder_spec.i","") [685] [2024-11-02 12:23:08,856 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [705] [2024-11-02 12:23:08,857 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [1104] [2024-11-02 12:23:08,857 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1240] [2024-11-02 12:23:08,857 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1278] [2024-11-02 12:23:08,860 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1560] [2024-11-02 12:23:08,861 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1569] [2024-11-02 12:23:08,861 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [1935] [2024-11-02 12:23:09,006 WARN L251 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_e23cbf46-f9e7-4be3-bd9c-25b0c3fb893e/sv-benchmarks/c/product-lines/email_spec11_product30.cil.c[29507,29520] [2024-11-02 12:23:09,118 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:23:09,180 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:23:09,181 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:23:09 WrapperNode [2024-11-02 12:23:09,181 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:23:09,183 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:23:09,183 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:23:09,184 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:23:09,194 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:23:09" (1/1) ... [2024-11-02 12:23:09,259 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:23:09" (1/1) ... [2024-11-02 12:23:09,364 INFO L138 Inliner]: procedures = 131, calls = 203, calls flagged for inlining = 60, calls inlined = 50, statements flattened = 905 [2024-11-02 12:23:09,372 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:23:09,373 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:23:09,373 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:23:09,373 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:23:09,387 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:23:09" (1/1) ... [2024-11-02 12:23:09,388 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:23:09" (1/1) ... [2024-11-02 12:23:09,404 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:23:09" (1/1) ... [2024-11-02 12:23:09,405 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:23:09" (1/1) ... [2024-11-02 12:23:09,446 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:23:09" (1/1) ... [2024-11-02 12:23:09,464 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:23:09" (1/1) ... [2024-11-02 12:23:09,476 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:23:09" (1/1) ... [2024-11-02 12:23:09,481 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:23:09" (1/1) ... [2024-11-02 12:23:09,490 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:23:09,491 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:23:09,491 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:23:09,492 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:23:09,497 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:23:09" (1/1) ... [2024-11-02 12:23:09,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:23:09,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23cbf46-f9e7-4be3-bd9c-25b0c3fb893e/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:23:09,554 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23cbf46-f9e7-4be3-bd9c-25b0c3fb893e/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:23:09,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23cbf46-f9e7-4be3-bd9c-25b0c3fb893e/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:23:09,609 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2024-11-02 12:23:09,610 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2024-11-02 12:23:09,610 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2024-11-02 12:23:09,611 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2024-11-02 12:23:09,611 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2024-11-02 12:23:09,612 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2024-11-02 12:23:09,612 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2024-11-02 12:23:09,613 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2024-11-02 12:23:09,613 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2024-11-02 12:23:09,613 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2024-11-02 12:23:09,613 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2024-11-02 12:23:09,615 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2024-11-02 12:23:09,616 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2024-11-02 12:23:09,616 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2024-11-02 12:23:09,617 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2024-11-02 12:23:09,617 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2024-11-02 12:23:09,617 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2024-11-02 12:23:09,620 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2024-11-02 12:23:09,620 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2024-11-02 12:23:09,620 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2024-11-02 12:23:09,621 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2024-11-02 12:23:09,621 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2024-11-02 12:23:09,621 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2024-11-02 12:23:09,621 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2024-11-02 12:23:09,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:23:09,622 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2024-11-02 12:23:09,622 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2024-11-02 12:23:09,622 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2024-11-02 12:23:09,623 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2024-11-02 12:23:09,623 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2024-11-02 12:23:09,623 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2024-11-02 12:23:09,623 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2024-11-02 12:23:09,623 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2024-11-02 12:23:09,624 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2024-11-02 12:23:09,624 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2024-11-02 12:23:09,624 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2024-11-02 12:23:09,624 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2024-11-02 12:23:09,625 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2024-11-02 12:23:09,625 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2024-11-02 12:23:09,625 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2024-11-02 12:23:09,625 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2024-11-02 12:23:09,625 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2024-11-02 12:23:09,626 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2024-11-02 12:23:09,626 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2024-11-02 12:23:09,626 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2024-11-02 12:23:09,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:23:09,627 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2024-11-02 12:23:09,627 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2024-11-02 12:23:09,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:23:09,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:23:09,924 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:23:09,929 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:23:11,350 INFO L? ?]: Removed 429 outVars from TransFormulas that were not future-live. [2024-11-02 12:23:11,350 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:23:12,185 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:23:12,185 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-02 12:23:12,186 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:23:12 BoogieIcfgContainer [2024-11-02 12:23:12,186 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:23:12,191 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:23:12,192 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:23:12,197 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:23:12,197 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:23:07" (1/3) ... [2024-11-02 12:23:12,198 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@417bec3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:23:12, skipping insertion in model container [2024-11-02 12:23:12,199 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:23:09" (2/3) ... [2024-11-02 12:23:12,201 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@417bec3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:23:12, skipping insertion in model container [2024-11-02 12:23:12,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:23:12" (3/3) ... [2024-11-02 12:23:12,203 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec11_product30.cil.c [2024-11-02 12:23:12,227 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:23:12,227 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 12:23:12,339 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:23:12,349 INFO L333 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, 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;@46435d20, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:23:12,350 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 12:23:12,358 INFO L276 IsEmpty]: Start isEmpty. Operand has 186 states, 109 states have (on average 1.3302752293577982) internal successors, (145), 113 states have internal predecessors, (145), 52 states have call successors, (52), 23 states have call predecessors, (52), 23 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-02 12:23:12,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-02 12:23:12,379 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:23:12,380 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:23:12,381 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:23:12,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:23:12,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1359786236, now seen corresponding path program 1 times [2024-11-02 12:23:12,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:23:12,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661659451] [2024-11-02 12:23:12,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:23:12,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:23:12,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:23:13,051 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-02 12:23:13,053 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:23:13,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661659451] [2024-11-02 12:23:13,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661659451] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:23:13,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:23:13,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:23:13,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678833186] [2024-11-02 12:23:13,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:23:13,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-02 12:23:13,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:23:13,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-02 12:23:13,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-02 12:23:13,109 INFO L87 Difference]: Start difference. First operand has 186 states, 109 states have (on average 1.3302752293577982) internal successors, (145), 113 states have internal predecessors, (145), 52 states have call successors, (52), 23 states have call predecessors, (52), 23 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-02 12:23:13,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:23:13,344 INFO L93 Difference]: Finished difference Result 289 states and 376 transitions. [2024-11-02 12:23:13,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-02 12:23:13,349 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 88 [2024-11-02 12:23:13,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:23:13,370 INFO L225 Difference]: With dead ends: 289 [2024-11-02 12:23:13,370 INFO L226 Difference]: Without dead ends: 183 [2024-11-02 12:23:13,377 INFO L431 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 [2024-11-02 12:23:13,384 INFO L432 NwaCegarLoop]: 212 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:23:13,386 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 212 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:23:13,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-11-02 12:23:13,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2024-11-02 12:23:13,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 107 states have (on average 1.2990654205607477) internal successors, (139), 110 states have internal predecessors, (139), 52 states have call successors, (52), 23 states have call predecessors, (52), 23 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2024-11-02 12:23:13,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 242 transitions. [2024-11-02 12:23:13,488 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 242 transitions. Word has length 88 [2024-11-02 12:23:13,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:23:13,490 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 242 transitions. [2024-11-02 12:23:13,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-02 12:23:13,490 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 242 transitions. [2024-11-02 12:23:13,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-02 12:23:13,494 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:23:13,494 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:23:13,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:23:13,495 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:23:13,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:23:13,496 INFO L85 PathProgramCache]: Analyzing trace with hash 830532669, now seen corresponding path program 1 times [2024-11-02 12:23:13,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:23:13,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170779004] [2024-11-02 12:23:13,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:23:13,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:23:13,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:23:13,920 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-02 12:23:13,920 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:23:13,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170779004] [2024-11-02 12:23:13,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170779004] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:23:13,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:23:13,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:23:13,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16631551] [2024-11-02 12:23:13,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:23:13,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:23:13,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:23:13,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:23:13,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:23:13,926 INFO L87 Difference]: Start difference. First operand 183 states and 242 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-02 12:23:14,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:23:14,121 INFO L93 Difference]: Finished difference Result 285 states and 364 transitions. [2024-11-02 12:23:14,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:23:14,123 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 89 [2024-11-02 12:23:14,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:23:14,129 INFO L225 Difference]: With dead ends: 285 [2024-11-02 12:23:14,130 INFO L226 Difference]: Without dead ends: 185 [2024-11-02 12:23:14,132 INFO L431 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 [2024-11-02 12:23:14,136 INFO L432 NwaCegarLoop]: 209 mSDtfsCounter, 0 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:23:14,137 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 417 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:23:14,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-11-02 12:23:14,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2024-11-02 12:23:14,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 109 states have (on average 1.2935779816513762) internal successors, (141), 112 states have internal predecessors, (141), 52 states have call successors, (52), 23 states have call predecessors, (52), 23 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2024-11-02 12:23:14,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 244 transitions. [2024-11-02 12:23:14,177 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 244 transitions. Word has length 89 [2024-11-02 12:23:14,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:23:14,180 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 244 transitions. [2024-11-02 12:23:14,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-02 12:23:14,181 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 244 transitions. [2024-11-02 12:23:14,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-02 12:23:14,189 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:23:14,189 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:23:14,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 12:23:14,190 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:23:14,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:23:14,192 INFO L85 PathProgramCache]: Analyzing trace with hash 692867820, now seen corresponding path program 1 times [2024-11-02 12:23:14,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:23:14,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242768644] [2024-11-02 12:23:14,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:23:14,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:23:14,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:23:14,463 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-02 12:23:14,463 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:23:14,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242768644] [2024-11-02 12:23:14,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242768644] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:23:14,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:23:14,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:23:14,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722750226] [2024-11-02 12:23:14,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:23:14,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:23:14,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:23:14,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:23:14,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:23:14,468 INFO L87 Difference]: Start difference. First operand 185 states and 244 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-02 12:23:14,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:23:14,621 INFO L93 Difference]: Finished difference Result 400 states and 547 transitions. [2024-11-02 12:23:14,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:23:14,622 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 94 [2024-11-02 12:23:14,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:23:14,625 INFO L225 Difference]: With dead ends: 400 [2024-11-02 12:23:14,625 INFO L226 Difference]: Without dead ends: 233 [2024-11-02 12:23:14,627 INFO L431 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 [2024-11-02 12:23:14,628 INFO L432 NwaCegarLoop]: 215 mSDtfsCounter, 57 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 418 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 [2024-11-02 12:23:14,629 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 418 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:23:14,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2024-11-02 12:23:14,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 228. [2024-11-02 12:23:14,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 141 states have (on average 1.375886524822695) internal successors, (194), 144 states have internal predecessors, (194), 63 states have call successors, (63), 23 states have call predecessors, (63), 23 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2024-11-02 12:23:14,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 319 transitions. [2024-11-02 12:23:14,668 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 319 transitions. Word has length 94 [2024-11-02 12:23:14,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:23:14,669 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 319 transitions. [2024-11-02 12:23:14,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-02 12:23:14,669 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 319 transitions. [2024-11-02 12:23:14,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-02 12:23:14,678 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:23:14,678 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:23:14,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-02 12:23:14,682 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:23:14,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:23:14,683 INFO L85 PathProgramCache]: Analyzing trace with hash 637781585, now seen corresponding path program 1 times [2024-11-02 12:23:14,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:23:14,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52085894] [2024-11-02 12:23:14,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:23:14,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:23:14,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:23:14,962 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-02 12:23:14,963 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:23:14,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52085894] [2024-11-02 12:23:14,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52085894] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:23:14,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875917539] [2024-11-02 12:23:14,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:23:14,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:23:14,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23cbf46-f9e7-4be3-bd9c-25b0c3fb893e/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:23:14,969 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23cbf46-f9e7-4be3-bd9c-25b0c3fb893e/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:23:14,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23cbf46-f9e7-4be3-bd9c-25b0c3fb893e/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-02 12:23:15,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:23:15,556 INFO L255 TraceCheckSpWp]: Trace formula consists of 978 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-02 12:23:15,566 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:23:15,661 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-02 12:23:15,663 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:23:15,831 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-02 12:23:15,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875917539] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:23:15,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [662701540] [2024-11-02 12:23:15,864 INFO L159 IcfgInterpreter]: Started Sifa with 74 locations of interest [2024-11-02 12:23:15,865 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:23:15,870 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:23:15,878 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:23:15,879 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs