./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec4_productSimulator.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_e21f57df-4f2a-493e-9bff-ae5986c5b66f/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21f57df-4f2a-493e-9bff-ae5986c5b66f/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21f57df-4f2a-493e-9bff-ae5986c5b66f/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21f57df-4f2a-493e-9bff-ae5986c5b66f/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec4_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21f57df-4f2a-493e-9bff-ae5986c5b66f/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21f57df-4f2a-493e-9bff-ae5986c5b66f/bin/utaipan-verify-SwPr7d2a91 --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 cf397912a53dab4d44f4df9c274fc7c69b1023a0a0a29a356bc73a744537daa6 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-25 00:02:05,677 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-25 00:02:05,812 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21f57df-4f2a-493e-9bff-ae5986c5b66f/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-25 00:02:05,821 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-25 00:02:05,822 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-25 00:02:05,858 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-25 00:02:05,859 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-25 00:02:05,860 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-25 00:02:05,861 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-25 00:02:05,866 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-25 00:02:05,866 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-25 00:02:05,867 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-25 00:02:05,868 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-25 00:02:05,870 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-25 00:02:05,870 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-25 00:02:05,871 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-25 00:02:05,871 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-25 00:02:05,872 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-25 00:02:05,872 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-25 00:02:05,873 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-25 00:02:05,873 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-25 00:02:05,874 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-25 00:02:05,875 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-25 00:02:05,875 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-25 00:02:05,876 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-25 00:02:05,876 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-25 00:02:05,877 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-25 00:02:05,877 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-25 00:02:05,878 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-25 00:02:05,878 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-25 00:02:05,880 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-25 00:02:05,880 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-25 00:02:05,880 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-25 00:02:05,880 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-25 00:02:05,881 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-25 00:02:05,881 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-25 00:02:05,881 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-25 00:02:05,882 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:02:05,882 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-25 00:02:05,882 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-25 00:02:05,883 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-25 00:02:05,883 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-25 00:02:05,883 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-25 00:02:05,884 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-25 00:02:05,884 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-25 00:02:05,885 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-25 00:02:05,885 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-25 00:02:05,885 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_e21f57df-4f2a-493e-9bff-ae5986c5b66f/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21f57df-4f2a-493e-9bff-ae5986c5b66f/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cf397912a53dab4d44f4df9c274fc7c69b1023a0a0a29a356bc73a744537daa6 [2023-11-25 00:02:06,221 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-25 00:02:06,254 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-25 00:02:06,257 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-25 00:02:06,259 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-25 00:02:06,260 INFO L274 PluginConnector]: CDTParser initialized [2023-11-25 00:02:06,261 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21f57df-4f2a-493e-9bff-ae5986c5b66f/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/product-lines/email_spec4_productSimulator.cil.c [2023-11-25 00:02:09,284 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-25 00:02:09,802 INFO L384 CDTParser]: Found 1 translation units. [2023-11-25 00:02:09,803 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21f57df-4f2a-493e-9bff-ae5986c5b66f/sv-benchmarks/c/product-lines/email_spec4_productSimulator.cil.c [2023-11-25 00:02:09,829 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21f57df-4f2a-493e-9bff-ae5986c5b66f/bin/utaipan-verify-SwPr7d2a91/data/8696b0cb4/12c6b0004af440648e2cb46de82af6b9/FLAG9fd440baf [2023-11-25 00:02:09,844 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21f57df-4f2a-493e-9bff-ae5986c5b66f/bin/utaipan-verify-SwPr7d2a91/data/8696b0cb4/12c6b0004af440648e2cb46de82af6b9 [2023-11-25 00:02:09,847 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-25 00:02:09,849 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-25 00:02:09,850 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-25 00:02:09,850 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-25 00:02:09,860 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-25 00:02:09,862 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:02:09" (1/1) ... [2023-11-25 00:02:09,863 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@215c9acf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:09, skipping insertion in model container [2023-11-25 00:02:09,863 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:02:09" (1/1) ... [2023-11-25 00:02:09,947 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:02:10,441 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_e21f57df-4f2a-493e-9bff-ae5986c5b66f/sv-benchmarks/c/product-lines/email_spec4_productSimulator.cil.c[18883,18896] [2023-11-25 00:02:10,699 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:02:10,717 INFO L202 MainTranslator]: Completed pre-run [2023-11-25 00:02:10,726 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [48] [2023-11-25 00:02:10,728 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [335] [2023-11-25 00:02:10,728 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [353] [2023-11-25 00:02:10,728 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [938] [2023-11-25 00:02:10,728 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [947] [2023-11-25 00:02:10,728 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2018] [2023-11-25 00:02:10,729 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [2128] [2023-11-25 00:02:10,729 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2527] [2023-11-25 00:02:10,729 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [2876] [2023-11-25 00:02:10,729 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [3080] [2023-11-25 00:02:10,729 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"SignForward_spec.i","") [3446] [2023-11-25 00:02:10,795 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_e21f57df-4f2a-493e-9bff-ae5986c5b66f/sv-benchmarks/c/product-lines/email_spec4_productSimulator.cil.c[18883,18896] [2023-11-25 00:02:10,968 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:02:11,040 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:02:11,048 INFO L206 MainTranslator]: Completed translation [2023-11-25 00:02:11,049 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:11 WrapperNode [2023-11-25 00:02:11,049 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:02:11,051 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-25 00:02:11,051 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-25 00:02:11,051 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-25 00:02:11,059 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:11" (1/1) ... [2023-11-25 00:02:11,120 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:11" (1/1) ... [2023-11-25 00:02:11,265 INFO L138 Inliner]: procedures = 151, calls = 283, calls flagged for inlining = 67, calls inlined = 64, statements flattened = 1340 [2023-11-25 00:02:11,265 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-25 00:02:11,266 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-25 00:02:11,266 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-25 00:02:11,266 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-25 00:02:11,277 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:11" (1/1) ... [2023-11-25 00:02:11,277 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:11" (1/1) ... [2023-11-25 00:02:11,289 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:11" (1/1) ... [2023-11-25 00:02:11,289 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:11" (1/1) ... [2023-11-25 00:02:11,319 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:11" (1/1) ... [2023-11-25 00:02:11,333 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:11" (1/1) ... [2023-11-25 00:02:11,340 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:11" (1/1) ... [2023-11-25 00:02:11,348 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:11" (1/1) ... [2023-11-25 00:02:11,361 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-25 00:02:11,362 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-25 00:02:11,362 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-25 00:02:11,362 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-25 00:02:11,363 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:11" (1/1) ... [2023-11-25 00:02:11,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:02:11,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21f57df-4f2a-493e-9bff-ae5986c5b66f/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:02:11,407 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21f57df-4f2a-493e-9bff-ae5986c5b66f/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-25 00:02:11,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21f57df-4f2a-493e-9bff-ae5986c5b66f/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-25 00:02:11,482 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2023-11-25 00:02:11,482 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2023-11-25 00:02:11,482 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__before__Keys [2023-11-25 00:02:11,483 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__before__Keys [2023-11-25 00:02:11,483 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Sign [2023-11-25 00:02:11,483 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Sign [2023-11-25 00:02:11,483 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2023-11-25 00:02:11,483 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2023-11-25 00:02:11,483 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2023-11-25 00:02:11,484 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2023-11-25 00:02:11,484 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2023-11-25 00:02:11,484 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2023-11-25 00:02:11,484 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2023-11-25 00:02:11,484 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2023-11-25 00:02:11,484 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Verify [2023-11-25 00:02:11,484 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Verify [2023-11-25 00:02:11,485 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-11-25 00:02:11,485 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-11-25 00:02:11,485 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__before__Keys [2023-11-25 00:02:11,485 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__before__Keys [2023-11-25 00:02:11,485 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-11-25 00:02:11,485 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-11-25 00:02:11,485 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-11-25 00:02:11,485 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-11-25 00:02:11,486 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-11-25 00:02:11,486 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-11-25 00:02:11,486 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Decrypt [2023-11-25 00:02:11,486 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Decrypt [2023-11-25 00:02:11,486 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Encrypt [2023-11-25 00:02:11,486 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Encrypt [2023-11-25 00:02:11,486 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2023-11-25 00:02:11,486 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2023-11-25 00:02:11,487 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2023-11-25 00:02:11,487 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2023-11-25 00:02:11,487 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-11-25 00:02:11,487 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-11-25 00:02:11,487 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2023-11-25 00:02:11,487 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Forward [2023-11-25 00:02:11,487 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Forward [2023-11-25 00:02:11,487 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-11-25 00:02:11,487 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-11-25 00:02:11,487 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2023-11-25 00:02:11,488 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2023-11-25 00:02:11,488 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-11-25 00:02:11,488 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-11-25 00:02:11,488 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__before__Encrypt [2023-11-25 00:02:11,488 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__before__Encrypt [2023-11-25 00:02:11,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-25 00:02:11,488 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2023-11-25 00:02:11,488 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2023-11-25 00:02:11,489 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2023-11-25 00:02:11,489 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2023-11-25 00:02:11,489 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__AddressBook [2023-11-25 00:02:11,489 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__AddressBook [2023-11-25 00:02:11,489 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Encrypt [2023-11-25 00:02:11,489 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Encrypt [2023-11-25 00:02:11,489 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__AutoResponder [2023-11-25 00:02:11,489 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__AutoResponder [2023-11-25 00:02:11,489 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2023-11-25 00:02:11,490 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2023-11-25 00:02:11,490 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-11-25 00:02:11,490 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-11-25 00:02:11,490 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-11-25 00:02:11,490 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-11-25 00:02:11,490 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-11-25 00:02:11,490 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-11-25 00:02:11,491 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2023-11-25 00:02:11,491 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2023-11-25 00:02:11,491 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-11-25 00:02:11,491 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-11-25 00:02:11,491 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2023-11-25 00:02:11,491 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2023-11-25 00:02:11,491 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__before__Keys [2023-11-25 00:02:11,491 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__before__Keys [2023-11-25 00:02:11,491 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Verify [2023-11-25 00:02:11,492 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Verify [2023-11-25 00:02:11,492 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-11-25 00:02:11,492 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-11-25 00:02:11,493 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2023-11-25 00:02:11,493 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2023-11-25 00:02:11,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-25 00:02:11,494 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-11-25 00:02:11,494 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-11-25 00:02:11,494 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Sign [2023-11-25 00:02:11,494 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Sign [2023-11-25 00:02:11,494 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-11-25 00:02:11,495 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-11-25 00:02:11,495 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2023-11-25 00:02:11,495 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2023-11-25 00:02:11,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-25 00:02:11,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-25 00:02:11,791 INFO L241 CfgBuilder]: Building ICFG [2023-11-25 00:02:11,795 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-25 00:02:13,199 INFO L282 CfgBuilder]: Performing block encoding [2023-11-25 00:02:14,033 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-25 00:02:14,034 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-25 00:02:14,036 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:02:14 BoogieIcfgContainer [2023-11-25 00:02:14,036 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-25 00:02:14,039 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-25 00:02:14,040 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-25 00:02:14,043 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-25 00:02:14,043 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 12:02:09" (1/3) ... [2023-11-25 00:02:14,045 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2191046d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:02:14, skipping insertion in model container [2023-11-25 00:02:14,045 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:11" (2/3) ... [2023-11-25 00:02:14,047 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2191046d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:02:14, skipping insertion in model container [2023-11-25 00:02:14,048 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:02:14" (3/3) ... [2023-11-25 00:02:14,050 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec4_productSimulator.cil.c [2023-11-25 00:02:14,071 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-25 00:02:14,072 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-25 00:02:14,156 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-25 00:02:14,165 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;@504bf4d0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-25 00:02:14,166 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-25 00:02:14,174 INFO L276 IsEmpty]: Start isEmpty. Operand has 380 states, 225 states have (on average 1.3333333333333333) internal successors, (300), 245 states have internal predecessors, (300), 110 states have call successors, (110), 43 states have call predecessors, (110), 43 states have return successors, (110), 109 states have call predecessors, (110), 110 states have call successors, (110) [2023-11-25 00:02:14,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-25 00:02:14,210 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:02:14,212 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:02:14,212 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:02:14,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:02:14,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1107794425, now seen corresponding path program 1 times [2023-11-25 00:02:14,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:02:14,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264331418] [2023-11-25 00:02:14,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:02:14,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:02:14,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:02:14,992 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-25 00:02:14,992 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:02:14,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264331418] [2023-11-25 00:02:14,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264331418] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:02:14,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:02:14,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-25 00:02:14,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935514655] [2023-11-25 00:02:14,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:02:15,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-25 00:02:15,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:02:15,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-25 00:02:15,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-25 00:02:15,039 INFO L87 Difference]: Start difference. First operand has 380 states, 225 states have (on average 1.3333333333333333) internal successors, (300), 245 states have internal predecessors, (300), 110 states have call successors, (110), 43 states have call predecessors, (110), 43 states have return successors, (110), 109 states have call predecessors, (110), 110 states have call successors, (110) Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-25 00:02:15,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:02:15,440 INFO L93 Difference]: Finished difference Result 729 states and 1001 transitions. [2023-11-25 00:02:15,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-25 00:02:15,444 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 101 [2023-11-25 00:02:15,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:02:15,479 INFO L225 Difference]: With dead ends: 729 [2023-11-25 00:02:15,479 INFO L226 Difference]: Without dead ends: 377 [2023-11-25 00:02:15,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-25 00:02:15,491 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 1 mSDsluCounter, 921 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1385 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-25 00:02:15,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1385 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-25 00:02:15,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2023-11-25 00:02:15,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2023-11-25 00:02:15,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 223 states have (on average 1.2914798206278026) internal successors, (288), 242 states have internal predecessors, (288), 110 states have call successors, (110), 43 states have call predecessors, (110), 43 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) [2023-11-25 00:02:15,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 507 transitions. [2023-11-25 00:02:15,577 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 507 transitions. Word has length 101 [2023-11-25 00:02:15,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:02:15,579 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 507 transitions. [2023-11-25 00:02:15,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-25 00:02:15,580 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 507 transitions. [2023-11-25 00:02:15,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-25 00:02:15,585 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:02:15,585 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:02:15,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-25 00:02:15,586 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:02:15,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:02:15,587 INFO L85 PathProgramCache]: Analyzing trace with hash -199809197, now seen corresponding path program 1 times [2023-11-25 00:02:15,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:02:15,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556627755] [2023-11-25 00:02:15,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:02:15,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:02:15,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:02:15,885 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-25 00:02:15,885 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:02:15,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556627755] [2023-11-25 00:02:15,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556627755] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:02:15,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:02:15,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-25 00:02:15,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843512052] [2023-11-25 00:02:15,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:02:15,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:02:15,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:02:15,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:02:15,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:02:15,890 INFO L87 Difference]: Start difference. First operand 377 states and 507 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-25 00:02:16,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:02:16,045 INFO L93 Difference]: Finished difference Result 727 states and 988 transitions. [2023-11-25 00:02:16,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:02:16,046 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 107 [2023-11-25 00:02:16,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:02:16,050 INFO L225 Difference]: With dead ends: 727 [2023-11-25 00:02:16,050 INFO L226 Difference]: Without dead ends: 377 [2023-11-25 00:02:16,052 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 [2023-11-25 00:02:16,054 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 474 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:02:16,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [474 Valid, 457 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:02:16,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2023-11-25 00:02:16,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2023-11-25 00:02:16,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 224 states have (on average 1.2723214285714286) internal successors, (285), 241 states have internal predecessors, (285), 108 states have call successors, (108), 44 states have call predecessors, (108), 44 states have return successors, (107), 106 states have call predecessors, (107), 107 states have call successors, (107) [2023-11-25 00:02:16,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 500 transitions. [2023-11-25 00:02:16,101 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 500 transitions. Word has length 107 [2023-11-25 00:02:16,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:02:16,102 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 500 transitions. [2023-11-25 00:02:16,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-25 00:02:16,103 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 500 transitions. [2023-11-25 00:02:16,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-25 00:02:16,105 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:02:16,106 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:02:16,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-25 00:02:16,106 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:02:16,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:02:16,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1114498635, now seen corresponding path program 1 times [2023-11-25 00:02:16,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:02:16,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674206699] [2023-11-25 00:02:16,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:02:16,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:02:16,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:02:16,352 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-25 00:02:16,352 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:02:16,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674206699] [2023-11-25 00:02:16,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674206699] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:02:16,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:02:16,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-25 00:02:16,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202753300] [2023-11-25 00:02:16,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:02:16,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:02:16,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:02:16,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:02:16,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:02:16,355 INFO L87 Difference]: Start difference. First operand 377 states and 500 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-25 00:02:16,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:02:16,541 INFO L93 Difference]: Finished difference Result 721 states and 967 transitions. [2023-11-25 00:02:16,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:02:16,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 113 [2023-11-25 00:02:16,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:02:16,548 INFO L225 Difference]: With dead ends: 721 [2023-11-25 00:02:16,548 INFO L226 Difference]: Without dead ends: 375 [2023-11-25 00:02:16,553 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 [2023-11-25 00:02:16,557 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 455 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:02:16,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 470 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:02:16,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2023-11-25 00:02:16,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 375. [2023-11-25 00:02:16,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 224 states have (on average 1.2589285714285714) internal successors, (282), 239 states have internal predecessors, (282), 106 states have call successors, (106), 44 states have call predecessors, (106), 44 states have return successors, (105), 104 states have call predecessors, (105), 105 states have call successors, (105) [2023-11-25 00:02:16,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 493 transitions. [2023-11-25 00:02:16,615 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 493 transitions. Word has length 113 [2023-11-25 00:02:16,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:02:16,618 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 493 transitions. [2023-11-25 00:02:16,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-25 00:02:16,618 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 493 transitions. [2023-11-25 00:02:16,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-25 00:02:16,627 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:02:16,628 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:02:16,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-25 00:02:16,629 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:02:16,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:02:16,629 INFO L85 PathProgramCache]: Analyzing trace with hash 302271856, now seen corresponding path program 1 times [2023-11-25 00:02:16,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:02:16,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949514275] [2023-11-25 00:02:16,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:02:16,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:02:16,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:02:16,805 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-25 00:02:16,806 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:02:16,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949514275] [2023-11-25 00:02:16,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949514275] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:02:16,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:02:16,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-25 00:02:16,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589588016] [2023-11-25 00:02:16,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:02:16,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:02:16,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:02:16,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:02:16,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:02:16,816 INFO L87 Difference]: Start difference. First operand 375 states and 493 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-25 00:02:16,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:02:16,981 INFO L93 Difference]: Finished difference Result 713 states and 934 transitions. [2023-11-25 00:02:16,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:02:16,982 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 114 [2023-11-25 00:02:16,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:02:16,986 INFO L225 Difference]: With dead ends: 713 [2023-11-25 00:02:16,987 INFO L226 Difference]: Without dead ends: 378 [2023-11-25 00:02:16,989 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 [2023-11-25 00:02:16,997 INFO L413 NwaCegarLoop]: 418 mSDtfsCounter, 436 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:02:16,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 453 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:02:17,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2023-11-25 00:02:17,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 372. [2023-11-25 00:02:17,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 224 states have (on average 1.2098214285714286) internal successors, (271), 234 states have internal predecessors, (271), 103 states have call successors, (103), 44 states have call predecessors, (103), 44 states have return successors, (102), 101 states have call predecessors, (102), 102 states have call successors, (102) [2023-11-25 00:02:17,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 476 transitions. [2023-11-25 00:02:17,041 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 476 transitions. Word has length 114 [2023-11-25 00:02:17,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:02:17,042 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 476 transitions. [2023-11-25 00:02:17,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-25 00:02:17,043 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 476 transitions. [2023-11-25 00:02:17,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-25 00:02:17,047 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:02:17,047 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:02:17,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-25 00:02:17,047 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:02:17,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:02:17,048 INFO L85 PathProgramCache]: Analyzing trace with hash -864357756, now seen corresponding path program 1 times [2023-11-25 00:02:17,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:02:17,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227620338] [2023-11-25 00:02:17,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:02:17,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:02:17,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:02:17,253 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-25 00:02:17,253 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:02:17,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227620338] [2023-11-25 00:02:17,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227620338] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:02:17,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:02:17,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-25 00:02:17,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130287535] [2023-11-25 00:02:17,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:02:17,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:02:17,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:02:17,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:02:17,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:02:17,257 INFO L87 Difference]: Start difference. First operand 372 states and 476 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-25 00:02:17,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:02:17,431 INFO L93 Difference]: Finished difference Result 589 states and 747 transitions. [2023-11-25 00:02:17,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:02:17,432 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 126 [2023-11-25 00:02:17,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:02:17,436 INFO L225 Difference]: With dead ends: 589 [2023-11-25 00:02:17,436 INFO L226 Difference]: Without dead ends: 374 [2023-11-25 00:02:17,438 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 [2023-11-25 00:02:17,440 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 0 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:02:17,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 847 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:02:17,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2023-11-25 00:02:17,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2023-11-25 00:02:17,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 226 states have (on average 1.2079646017699115) internal successors, (273), 236 states have internal predecessors, (273), 103 states have call successors, (103), 44 states have call predecessors, (103), 44 states have return successors, (102), 101 states have call predecessors, (102), 102 states have call successors, (102) [2023-11-25 00:02:17,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 478 transitions. [2023-11-25 00:02:17,474 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 478 transitions. Word has length 126 [2023-11-25 00:02:17,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:02:17,476 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 478 transitions. [2023-11-25 00:02:17,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-25 00:02:17,477 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 478 transitions. [2023-11-25 00:02:17,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-25 00:02:17,480 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:02:17,480 INFO L195 NwaCegarLoop]: trace histogram [8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:02:17,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-25 00:02:17,481 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:02:17,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:02:17,481 INFO L85 PathProgramCache]: Analyzing trace with hash -953798145, now seen corresponding path program 1 times [2023-11-25 00:02:17,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:02:17,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843209348] [2023-11-25 00:02:17,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:02:17,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:02:17,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:02:17,648 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-25 00:02:17,648 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:02:17,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843209348] [2023-11-25 00:02:17,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843209348] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:02:17,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:02:17,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-25 00:02:17,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208456169] [2023-11-25 00:02:17,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:02:17,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:02:17,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:02:17,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:02:17,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:02:17,652 INFO L87 Difference]: Start difference. First operand 374 states and 478 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-25 00:02:17,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:02:17,841 INFO L93 Difference]: Finished difference Result 748 states and 980 transitions. [2023-11-25 00:02:17,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:02:17,842 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 131 [2023-11-25 00:02:17,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:02:17,847 INFO L225 Difference]: With dead ends: 748 [2023-11-25 00:02:17,847 INFO L226 Difference]: Without dead ends: 441 [2023-11-25 00:02:17,849 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 [2023-11-25 00:02:17,850 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 76 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:02:17,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 862 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:02:17,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2023-11-25 00:02:17,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 436. [2023-11-25 00:02:17,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 274 states have (on average 1.2518248175182483) internal successors, (343), 284 states have internal predecessors, (343), 117 states have call successors, (117), 44 states have call predecessors, (117), 44 states have return successors, (116), 115 states have call predecessors, (116), 116 states have call successors, (116) [2023-11-25 00:02:17,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 576 transitions. [2023-11-25 00:02:17,890 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 576 transitions. Word has length 131 [2023-11-25 00:02:17,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:02:17,890 INFO L495 AbstractCegarLoop]: Abstraction has 436 states and 576 transitions. [2023-11-25 00:02:17,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-25 00:02:17,891 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 576 transitions. [2023-11-25 00:02:17,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-25 00:02:17,893 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:02:17,894 INFO L195 NwaCegarLoop]: trace histogram [8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:02:17,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-25 00:02:17,894 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-25 00:02:17,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:02:17,895 INFO L85 PathProgramCache]: Analyzing trace with hash -522136645, now seen corresponding path program 1 times [2023-11-25 00:02:17,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:02:17,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056659134] [2023-11-25 00:02:17,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:02:17,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:02:17,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:02:18,131 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-25 00:02:18,131 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:02:18,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056659134] [2023-11-25 00:02:18,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056659134] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-25 00:02:18,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373942004] [2023-11-25 00:02:18,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:02:18,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:02:18,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21f57df-4f2a-493e-9bff-ae5986c5b66f/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:02:18,136 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21f57df-4f2a-493e-9bff-ae5986c5b66f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:02:18,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21f57df-4f2a-493e-9bff-ae5986c5b66f/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-25 00:02:18,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:02:18,599 INFO L262 TraceCheckSpWp]: Trace formula consists of 1327 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-25 00:02:18,612 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:02:18,690 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-25 00:02:18,690 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:02:18,809 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-25 00:02:18,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373942004] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:02:18,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1256710734] [2023-11-25 00:02:18,835 INFO L159 IcfgInterpreter]: Started Sifa with 105 locations of interest [2023-11-25 00:02:18,835 INFO L166 IcfgInterpreter]: Building call graph [2023-11-25 00:02:18,839 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-25 00:02:18,845 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-25 00:02:18,846 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs