./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec6_productSimulator.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0fb3c3b-4dfa-49f0-a387-ce9336baa130/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0fb3c3b-4dfa-49f0-a387-ce9336baa130/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_a0fb3c3b-4dfa-49f0-a387-ce9336baa130/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0fb3c3b-4dfa-49f0-a387-ce9336baa130/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec6_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0fb3c3b-4dfa-49f0-a387-ce9336baa130/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_a0fb3c3b-4dfa-49f0-a387-ce9336baa130/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 c86855dab8667fe80df418e2dda62d52081f1a657b6492a63fb3d2a1da4890b5 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:51:38,613 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:51:38,683 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0fb3c3b-4dfa-49f0-a387-ce9336baa130/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-24 23:51:38,689 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:51:38,690 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:51:38,717 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:51:38,718 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:51:38,718 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:51:38,719 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:51:38,720 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:51:38,720 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:51:38,721 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:51:38,722 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:51:38,722 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:51:38,723 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:51:38,724 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:51:38,724 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:51:38,725 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:51:38,725 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:51:38,726 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:51:38,727 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:51:38,727 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:51:38,728 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:51:38,729 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:51:38,729 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:51:38,730 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:51:38,730 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:51:38,731 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:51:38,731 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:51:38,732 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:51:38,732 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:51:38,732 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:51:38,733 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:51:38,733 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:51:38,734 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:51:38,734 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:51:38,735 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:51:38,735 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:51:38,736 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:51:38,736 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:51:38,737 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:51:38,741 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:51:38,742 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:51:38,743 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:51:38,744 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:51:38,744 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:51:38,745 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:51:38,745 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_a0fb3c3b-4dfa-49f0-a387-ce9336baa130/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0fb3c3b-4dfa-49f0-a387-ce9336baa130/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c86855dab8667fe80df418e2dda62d52081f1a657b6492a63fb3d2a1da4890b5 [2023-11-24 23:51:39,046 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:51:39,068 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:51:39,071 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:51:39,073 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:51:39,073 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:51:39,075 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0fb3c3b-4dfa-49f0-a387-ce9336baa130/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/product-lines/email_spec6_productSimulator.cil.c [2023-11-24 23:51:42,109 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:51:42,528 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:51:42,529 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0fb3c3b-4dfa-49f0-a387-ce9336baa130/sv-benchmarks/c/product-lines/email_spec6_productSimulator.cil.c [2023-11-24 23:51:42,560 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0fb3c3b-4dfa-49f0-a387-ce9336baa130/bin/utaipan-verify-SwPr7d2a91/data/e7ff18615/650d1da1274f4af0973f69e1dfd4252e/FLAGe8b866ce7 [2023-11-24 23:51:42,572 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0fb3c3b-4dfa-49f0-a387-ce9336baa130/bin/utaipan-verify-SwPr7d2a91/data/e7ff18615/650d1da1274f4af0973f69e1dfd4252e [2023-11-24 23:51:42,574 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:51:42,577 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:51:42,579 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:51:42,579 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:51:42,584 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:51:42,585 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:51:42" (1/1) ... [2023-11-24 23:51:42,586 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cccccf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:42, skipping insertion in model container [2023-11-24 23:51:42,587 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:51:42" (1/1) ... [2023-11-24 23:51:42,676 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:51:43,070 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_a0fb3c3b-4dfa-49f0-a387-ce9336baa130/sv-benchmarks/c/product-lines/email_spec6_productSimulator.cil.c[17001,17014] [2023-11-24 23:51:43,345 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:51:43,360 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:51:43,370 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EncryptDecrypt_spec.i","") [48] [2023-11-24 23:51:43,372 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [111] [2023-11-24 23:51:43,372 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [477] [2023-11-24 23:51:43,373 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [692] [2023-11-24 23:51:43,373 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [701] [2023-11-24 23:51:43,373 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [811] [2023-11-24 23:51:43,373 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [1890] [2023-11-24 23:51:43,373 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1907] [2023-11-24 23:51:43,374 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2184] [2023-11-24 23:51:43,374 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [2539] [2023-11-24 23:51:43,374 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [2941] [2023-11-24 23:51:43,406 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_a0fb3c3b-4dfa-49f0-a387-ce9336baa130/sv-benchmarks/c/product-lines/email_spec6_productSimulator.cil.c[17001,17014] [2023-11-24 23:51:43,521 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:51:43,605 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:51:43,614 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:51:43,615 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:43 WrapperNode [2023-11-24 23:51:43,615 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:51:43,616 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:51:43,617 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:51:43,617 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:51:43,625 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:43" (1/1) ... [2023-11-24 23:51:43,692 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:43" (1/1) ... [2023-11-24 23:51:43,810 INFO L138 Inliner]: procedures = 152, calls = 290, calls flagged for inlining = 68, calls inlined = 65, statements flattened = 1369 [2023-11-24 23:51:43,810 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:51:43,811 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:51:43,811 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:51:43,811 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:51:43,822 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:43" (1/1) ... [2023-11-24 23:51:43,822 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:43" (1/1) ... [2023-11-24 23:51:43,830 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:43" (1/1) ... [2023-11-24 23:51:43,831 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:43" (1/1) ... [2023-11-24 23:51:43,880 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:43" (1/1) ... [2023-11-24 23:51:43,898 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:43" (1/1) ... [2023-11-24 23:51:43,915 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:43" (1/1) ... [2023-11-24 23:51:43,923 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:43" (1/1) ... [2023-11-24 23:51:43,949 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:51:43,950 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:51:43,950 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:51:43,950 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:51:43,951 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:43" (1/1) ... [2023-11-24 23:51:43,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:51:43,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0fb3c3b-4dfa-49f0-a387-ce9336baa130/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:51:43,999 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0fb3c3b-4dfa-49f0-a387-ce9336baa130/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:51:44,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0fb3c3b-4dfa-49f0-a387-ce9336baa130/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:51:44,050 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2023-11-24 23:51:44,050 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2023-11-24 23:51:44,051 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__before__Keys [2023-11-24 23:51:44,052 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__before__Keys [2023-11-24 23:51:44,053 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Sign [2023-11-24 23:51:44,053 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Sign [2023-11-24 23:51:44,053 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2023-11-24 23:51:44,054 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2023-11-24 23:51:44,054 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2023-11-24 23:51:44,054 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2023-11-24 23:51:44,055 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2023-11-24 23:51:44,056 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2023-11-24 23:51:44,056 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2023-11-24 23:51:44,056 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2023-11-24 23:51:44,059 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Verify [2023-11-24 23:51:44,059 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Verify [2023-11-24 23:51:44,059 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-11-24 23:51:44,059 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-11-24 23:51:44,059 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__before__Keys [2023-11-24 23:51:44,060 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__before__Keys [2023-11-24 23:51:44,060 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-11-24 23:51:44,060 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-11-24 23:51:44,060 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-11-24 23:51:44,060 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-11-24 23:51:44,060 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-11-24 23:51:44,060 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-11-24 23:51:44,061 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Decrypt [2023-11-24 23:51:44,061 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Decrypt [2023-11-24 23:51:44,061 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Encrypt [2023-11-24 23:51:44,061 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Encrypt [2023-11-24 23:51:44,061 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2023-11-24 23:51:44,062 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2023-11-24 23:51:44,062 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2023-11-24 23:51:44,062 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2023-11-24 23:51:44,062 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-11-24 23:51:44,063 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-11-24 23:51:44,063 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2023-11-24 23:51:44,063 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Forward [2023-11-24 23:51:44,063 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Forward [2023-11-24 23:51:44,063 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-11-24 23:51:44,063 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-11-24 23:51:44,064 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2023-11-24 23:51:44,064 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2023-11-24 23:51:44,064 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-11-24 23:51:44,064 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-11-24 23:51:44,064 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__before__Encrypt [2023-11-24 23:51:44,065 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__before__Encrypt [2023-11-24 23:51:44,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:51:44,067 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2023-11-24 23:51:44,067 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2023-11-24 23:51:44,067 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2023-11-24 23:51:44,068 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2023-11-24 23:51:44,068 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__AddressBook [2023-11-24 23:51:44,068 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__AddressBook [2023-11-24 23:51:44,068 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Encrypt [2023-11-24 23:51:44,068 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Encrypt [2023-11-24 23:51:44,068 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__AutoResponder [2023-11-24 23:51:44,069 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__AutoResponder [2023-11-24 23:51:44,069 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2023-11-24 23:51:44,069 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2023-11-24 23:51:44,070 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-11-24 23:51:44,070 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-11-24 23:51:44,070 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-11-24 23:51:44,070 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-11-24 23:51:44,070 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-11-24 23:51:44,071 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-11-24 23:51:44,072 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2023-11-24 23:51:44,072 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2023-11-24 23:51:44,072 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-11-24 23:51:44,072 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-11-24 23:51:44,072 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2023-11-24 23:51:44,073 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2023-11-24 23:51:44,074 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__before__Keys [2023-11-24 23:51:44,074 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__before__Keys [2023-11-24 23:51:44,074 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Verify [2023-11-24 23:51:44,074 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Verify [2023-11-24 23:51:44,074 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-11-24 23:51:44,075 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-11-24 23:51:44,075 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2023-11-24 23:51:44,075 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2023-11-24 23:51:44,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:51:44,075 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-11-24 23:51:44,075 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-11-24 23:51:44,076 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Sign [2023-11-24 23:51:44,076 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Sign [2023-11-24 23:51:44,076 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-11-24 23:51:44,076 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-11-24 23:51:44,076 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2023-11-24 23:51:44,077 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2023-11-24 23:51:44,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:51:44,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:51:44,350 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:51:44,355 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:51:45,791 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:51:46,708 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:51:46,708 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-24 23:51:46,710 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:51:46 BoogieIcfgContainer [2023-11-24 23:51:46,710 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:51:46,715 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:51:46,715 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:51:46,719 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:51:46,719 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:51:42" (1/3) ... [2023-11-24 23:51:46,720 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fc81d33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:51:46, skipping insertion in model container [2023-11-24 23:51:46,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:43" (2/3) ... [2023-11-24 23:51:46,722 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fc81d33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:51:46, skipping insertion in model container [2023-11-24 23:51:46,723 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:51:46" (3/3) ... [2023-11-24 23:51:46,724 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec6_productSimulator.cil.c [2023-11-24 23:51:46,745 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:51:46,745 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 23:51:46,807 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:51:46,813 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;@7b54c311, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:51:46,814 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 23:51:46,820 INFO L276 IsEmpty]: Start isEmpty. Operand has 384 states, 227 states have (on average 1.330396475770925) internal successors, (302), 247 states have internal predecessors, (302), 112 states have call successors, (112), 43 states have call predecessors, (112), 43 states have return successors, (112), 111 states have call predecessors, (112), 112 states have call successors, (112) [2023-11-24 23:51:46,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-24 23:51:46,842 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:51:46,843 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:51:46,844 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:51:46,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:51:46,850 INFO L85 PathProgramCache]: Analyzing trace with hash 185143270, now seen corresponding path program 1 times [2023-11-24 23:51:46,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:51:46,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833742630] [2023-11-24 23:51:46,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:46,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:51:47,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:47,701 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-24 23:51:47,702 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:51:47,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833742630] [2023-11-24 23:51:47,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833742630] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:51:47,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:51:47,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:51:47,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006238885] [2023-11-24 23:51:47,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:51:47,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:51:47,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:51:47,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:51:47,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:51:47,779 INFO L87 Difference]: Start difference. First operand has 384 states, 227 states have (on average 1.330396475770925) internal successors, (302), 247 states have internal predecessors, (302), 112 states have call successors, (112), 43 states have call predecessors, (112), 43 states have return successors, (112), 111 states have call predecessors, (112), 112 states have call successors, (112) Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-11-24 23:51:48,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:51:48,192 INFO L93 Difference]: Finished difference Result 737 states and 1013 transitions. [2023-11-24 23:51:48,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:51:48,195 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 122 [2023-11-24 23:51:48,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:51:48,228 INFO L225 Difference]: With dead ends: 737 [2023-11-24 23:51:48,229 INFO L226 Difference]: Without dead ends: 381 [2023-11-24 23:51:48,239 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 [2023-11-24 23:51:48,244 INFO L413 NwaCegarLoop]: 469 mSDtfsCounter, 1 mSDsluCounter, 931 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1400 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:51:48,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1400 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:51:48,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2023-11-24 23:51:48,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2023-11-24 23:51:48,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 225 states have (on average 1.288888888888889) internal successors, (290), 244 states have internal predecessors, (290), 112 states have call successors, (112), 43 states have call predecessors, (112), 43 states have return successors, (111), 110 states have call predecessors, (111), 111 states have call successors, (111) [2023-11-24 23:51:48,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 513 transitions. [2023-11-24 23:51:48,379 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 513 transitions. Word has length 122 [2023-11-24 23:51:48,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:51:48,381 INFO L495 AbstractCegarLoop]: Abstraction has 381 states and 513 transitions. [2023-11-24 23:51:48,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-11-24 23:51:48,381 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 513 transitions. [2023-11-24 23:51:48,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-11-24 23:51:48,387 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:51:48,388 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:51:48,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:51:48,389 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:51:48,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:51:48,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1801381429, now seen corresponding path program 1 times [2023-11-24 23:51:48,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:51:48,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921328067] [2023-11-24 23:51:48,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:48,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:51:48,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:48,646 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-24 23:51:48,647 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:51:48,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921328067] [2023-11-24 23:51:48,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921328067] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:51:48,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:51:48,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:51:48,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056802445] [2023-11-24 23:51:48,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:51:48,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:51:48,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:51:48,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:51:48,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:51:48,652 INFO L87 Difference]: Start difference. First operand 381 states and 513 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2023-11-24 23:51:48,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:51:48,811 INFO L93 Difference]: Finished difference Result 739 states and 1011 transitions. [2023-11-24 23:51:48,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:51:48,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 128 [2023-11-24 23:51:48,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:51:48,816 INFO L225 Difference]: With dead ends: 739 [2023-11-24 23:51:48,816 INFO L226 Difference]: Without dead ends: 379 [2023-11-24 23:51:48,818 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 [2023-11-24 23:51:48,820 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 482 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:51:48,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [482 Valid, 448 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:51:48,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2023-11-24 23:51:48,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2023-11-24 23:51:48,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 225 states have (on average 1.2666666666666666) internal successors, (285), 242 states have internal predecessors, (285), 109 states have call successors, (109), 44 states have call predecessors, (109), 44 states have return successors, (108), 107 states have call predecessors, (108), 108 states have call successors, (108) [2023-11-24 23:51:48,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 502 transitions. [2023-11-24 23:51:48,857 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 502 transitions. Word has length 128 [2023-11-24 23:51:48,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:51:48,858 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 502 transitions. [2023-11-24 23:51:48,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2023-11-24 23:51:48,859 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 502 transitions. [2023-11-24 23:51:48,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-24 23:51:48,862 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:51:48,862 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:51:48,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 23:51:48,863 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:51:48,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:51:48,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1487517109, now seen corresponding path program 1 times [2023-11-24 23:51:48,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:51:48,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483839644] [2023-11-24 23:51:48,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:48,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:51:48,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:49,038 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-24 23:51:49,038 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:51:49,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483839644] [2023-11-24 23:51:49,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483839644] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:51:49,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:51:49,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:51:49,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269223728] [2023-11-24 23:51:49,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:51:49,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:51:49,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:51:49,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:51:49,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:51:49,044 INFO L87 Difference]: Start difference. First operand 379 states and 502 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-11-24 23:51:49,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:51:49,201 INFO L93 Difference]: Finished difference Result 732 states and 979 transitions. [2023-11-24 23:51:49,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:51:49,203 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 130 [2023-11-24 23:51:49,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:51:49,209 INFO L225 Difference]: With dead ends: 732 [2023-11-24 23:51:49,209 INFO L226 Difference]: Without dead ends: 378 [2023-11-24 23:51:49,213 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 [2023-11-24 23:51:49,217 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 469 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:51:49,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [469 Valid, 467 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:51:49,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2023-11-24 23:51:49,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 378. [2023-11-24 23:51:49,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 225 states have (on average 1.2577777777777779) internal successors, (283), 241 states have internal predecessors, (283), 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) [2023-11-24 23:51:49,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 498 transitions. [2023-11-24 23:51:49,270 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 498 transitions. Word has length 130 [2023-11-24 23:51:49,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:51:49,271 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 498 transitions. [2023-11-24 23:51:49,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-11-24 23:51:49,272 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 498 transitions. [2023-11-24 23:51:49,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-24 23:51:49,275 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:51:49,275 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:51:49,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 23:51:49,277 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:51:49,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:51:49,278 INFO L85 PathProgramCache]: Analyzing trace with hash -2032640719, now seen corresponding path program 1 times [2023-11-24 23:51:49,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:51:49,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324777675] [2023-11-24 23:51:49,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:49,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:51:49,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:49,440 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-24 23:51:49,441 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:51:49,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324777675] [2023-11-24 23:51:49,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324777675] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:51:49,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:51:49,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:51:49,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384333123] [2023-11-24 23:51:49,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:51:49,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:51:49,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:51:49,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:51:49,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:51:49,449 INFO L87 Difference]: Start difference. First operand 378 states and 498 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, (29), 2 states have call predecessors, (29), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-11-24 23:51:49,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:51:49,623 INFO L93 Difference]: Finished difference Result 713 states and 938 transitions. [2023-11-24 23:51:49,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:51:49,625 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, (29), 2 states have call predecessors, (29), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 131 [2023-11-24 23:51:49,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:51:49,629 INFO L225 Difference]: With dead ends: 713 [2023-11-24 23:51:49,629 INFO L226 Difference]: Without dead ends: 375 [2023-11-24 23:51:49,631 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 [2023-11-24 23:51:49,639 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 442 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:51:49,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 443 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:51:49,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2023-11-24 23:51:49,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 375. [2023-11-24 23:51:49,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 225 states have (on average 1.208888888888889) internal successors, (272), 236 states have internal predecessors, (272), 105 states have call successors, (105), 44 states have call predecessors, (105), 44 states have return successors, (104), 103 states have call predecessors, (104), 104 states have call successors, (104) [2023-11-24 23:51:49,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 481 transitions. [2023-11-24 23:51:49,684 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 481 transitions. Word has length 131 [2023-11-24 23:51:49,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:51:49,685 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 481 transitions. [2023-11-24 23:51:49,685 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, (29), 2 states have call predecessors, (29), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-11-24 23:51:49,687 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 481 transitions. [2023-11-24 23:51:49,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-11-24 23:51:49,692 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:51:49,693 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:51:49,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 23:51:49,693 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:51:49,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:51:49,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1965753495, now seen corresponding path program 1 times [2023-11-24 23:51:49,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:51:49,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154588098] [2023-11-24 23:51:49,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:49,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:51:49,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:49,949 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-24 23:51:49,950 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:51:49,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154588098] [2023-11-24 23:51:49,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154588098] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:51:49,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:51:49,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:51:49,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682682255] [2023-11-24 23:51:49,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:51:49,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:51:49,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:51:49,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:51:49,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:51:49,953 INFO L87 Difference]: Start difference. First operand 375 states and 481 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2023-11-24 23:51:50,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:51:50,139 INFO L93 Difference]: Finished difference Result 595 states and 757 transitions. [2023-11-24 23:51:50,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:51:50,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 143 [2023-11-24 23:51:50,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:51:50,146 INFO L225 Difference]: With dead ends: 595 [2023-11-24 23:51:50,146 INFO L226 Difference]: Without dead ends: 377 [2023-11-24 23:51:50,148 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 [2023-11-24 23:51:50,151 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 0 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:51:50,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 855 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:51:50,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2023-11-24 23:51:50,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2023-11-24 23:51:50,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 227 states have (on average 1.2070484581497798) internal successors, (274), 238 states have internal predecessors, (274), 105 states have call successors, (105), 44 states have call predecessors, (105), 44 states have return successors, (104), 103 states have call predecessors, (104), 104 states have call successors, (104) [2023-11-24 23:51:50,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 483 transitions. [2023-11-24 23:51:50,190 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 483 transitions. Word has length 143 [2023-11-24 23:51:50,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:51:50,192 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 483 transitions. [2023-11-24 23:51:50,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2023-11-24 23:51:50,192 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 483 transitions. [2023-11-24 23:51:50,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-11-24 23:51:50,195 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:51:50,196 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:51:50,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 23:51:50,196 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:51:50,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:51:50,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1064719686, now seen corresponding path program 1 times [2023-11-24 23:51:50,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:51:50,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591219099] [2023-11-24 23:51:50,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:50,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:51:50,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:50,409 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-24 23:51:50,410 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:51:50,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591219099] [2023-11-24 23:51:50,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591219099] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:51:50,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:51:50,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:51:50,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193913197] [2023-11-24 23:51:50,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:51:50,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:51:50,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:51:50,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:51:50,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:51:50,412 INFO L87 Difference]: Start difference. First operand 377 states and 483 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2023-11-24 23:51:50,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:51:50,582 INFO L93 Difference]: Finished difference Result 754 states and 990 transitions. [2023-11-24 23:51:50,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:51:50,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 148 [2023-11-24 23:51:50,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:51:50,587 INFO L225 Difference]: With dead ends: 754 [2023-11-24 23:51:50,588 INFO L226 Difference]: Without dead ends: 444 [2023-11-24 23:51:50,589 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 [2023-11-24 23:51:50,590 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 76 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 859 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 [2023-11-24 23:51:50,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 859 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:51:50,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2023-11-24 23:51:50,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 439. [2023-11-24 23:51:50,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 275 states have (on average 1.250909090909091) internal successors, (344), 286 states have internal predecessors, (344), 119 states have call successors, (119), 44 states have call predecessors, (119), 44 states have return successors, (118), 117 states have call predecessors, (118), 118 states have call successors, (118) [2023-11-24 23:51:50,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 581 transitions. [2023-11-24 23:51:50,635 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 581 transitions. Word has length 148 [2023-11-24 23:51:50,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:51:50,635 INFO L495 AbstractCegarLoop]: Abstraction has 439 states and 581 transitions. [2023-11-24 23:51:50,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2023-11-24 23:51:50,636 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 581 transitions. [2023-11-24 23:51:50,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-11-24 23:51:50,639 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:51:50,639 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:51:50,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 23:51:50,639 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__before__EncryptErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:51:50,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:51:50,640 INFO L85 PathProgramCache]: Analyzing trace with hash 492568812, now seen corresponding path program 1 times [2023-11-24 23:51:50,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:51:50,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139331788] [2023-11-24 23:51:50,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:50,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:51:50,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:50,910 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-24 23:51:50,910 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:51:50,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139331788] [2023-11-24 23:51:50,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139331788] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:51:50,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121235083] [2023-11-24 23:51:50,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:50,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:51:50,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0fb3c3b-4dfa-49f0-a387-ce9336baa130/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:51:50,916 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0fb3c3b-4dfa-49f0-a387-ce9336baa130/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:51:50,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0fb3c3b-4dfa-49f0-a387-ce9336baa130/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 23:51:51,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:51,413 INFO L262 TraceCheckSpWp]: Trace formula consists of 1447 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:51:51,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:51:51,501 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-24 23:51:51,502 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:51:51,634 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-24 23:51:51,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121235083] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:51:51,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [134213838] [2023-11-24 23:51:51,661 INFO L159 IcfgInterpreter]: Started Sifa with 122 locations of interest [2023-11-24 23:51:51,662 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:51:51,666 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:51:51,673 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:51:51,673 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs