./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec8_product28.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a 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_db7c449d-5c1d-4868-8fac-72f745926df3/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7c449d-5c1d-4868-8fac-72f745926df3/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7c449d-5c1d-4868-8fac-72f745926df3/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7c449d-5c1d-4868-8fac-72f745926df3/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec8_product28.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7c449d-5c1d-4868-8fac-72f745926df3/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7c449d-5c1d-4868-8fac-72f745926df3/bin/uautomizer-verify-4GaUIPS5ZU --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 459b394196a1606fd18d87736056d8c2e811f354c9c1071577c3ccd936910200 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:04:14,114 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:04:14,210 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7c449d-5c1d-4868-8fac-72f745926df3/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 22:04:14,215 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:04:14,218 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:04:14,256 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:04:14,258 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:04:14,260 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:04:14,261 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:04:14,261 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:04:14,262 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:04:14,262 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:04:14,263 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:04:14,263 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:04:14,264 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:04:14,264 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:04:14,265 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:04:14,265 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:04:14,265 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:04:14,266 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:04:14,266 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:04:14,267 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:04:14,267 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:04:14,268 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:04:14,268 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:04:14,269 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:04:14,269 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:04:14,269 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:04:14,270 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:04:14,270 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:04:14,271 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:04:14,271 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:04:14,271 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:04:14,272 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:04:14,272 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:04:14,273 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:04:14,273 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:04:14,273 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:04:14,274 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:04:14,274 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:04:14,275 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:04:14,279 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:04:14,279 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_db7c449d-5c1d-4868-8fac-72f745926df3/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7c449d-5c1d-4868-8fac-72f745926df3/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 459b394196a1606fd18d87736056d8c2e811f354c9c1071577c3ccd936910200 [2024-10-31 22:04:14,593 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:04:14,628 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:04:14,631 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:04:14,633 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:04:14,634 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:04:14,635 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7c449d-5c1d-4868-8fac-72f745926df3/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/product-lines/email_spec8_product28.cil.c Unable to find full path for "g++" [2024-10-31 22:04:16,827 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:04:17,264 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:04:17,265 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7c449d-5c1d-4868-8fac-72f745926df3/sv-benchmarks/c/product-lines/email_spec8_product28.cil.c [2024-10-31 22:04:17,293 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7c449d-5c1d-4868-8fac-72f745926df3/bin/uautomizer-verify-4GaUIPS5ZU/data/9409963f2/d68e4bf5a49f456997aa834a33300493/FLAG250382dda [2024-10-31 22:04:17,408 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7c449d-5c1d-4868-8fac-72f745926df3/bin/uautomizer-verify-4GaUIPS5ZU/data/9409963f2/d68e4bf5a49f456997aa834a33300493 [2024-10-31 22:04:17,412 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:04:17,414 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:04:17,416 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:04:17,418 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:04:17,426 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:04:17,427 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:04:17" (1/1) ... [2024-10-31 22:04:17,428 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42d0119 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:17, skipping insertion in model container [2024-10-31 22:04:17,429 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:04:17" (1/1) ... [2024-10-31 22:04:17,525 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:04:18,018 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7c449d-5c1d-4868-8fac-72f745926df3/sv-benchmarks/c/product-lines/email_spec8_product28.cil.c[29342,29355] [2024-10-31 22:04:18,250 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:04:18,268 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:04:18,280 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [48] [2024-10-31 22:04:18,281 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [97] [2024-10-31 22:04:18,282 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [318] [2024-10-31 22:04:18,282 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [467] [2024-10-31 22:04:18,283 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EncryptAutoResponder_spec.i","") [484] [2024-10-31 22:04:18,283 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [528] [2024-10-31 22:04:18,283 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [930] [2024-10-31 22:04:18,283 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1296] [2024-10-31 22:04:18,284 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1305] [2024-10-31 22:04:18,285 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [1583] [2024-10-31 22:04:18,285 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [1908] [2024-10-31 22:04:18,386 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7c449d-5c1d-4868-8fac-72f745926df3/sv-benchmarks/c/product-lines/email_spec8_product28.cil.c[29342,29355] [2024-10-31 22:04:18,463 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:04:18,512 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:04:18,512 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:18 WrapperNode [2024-10-31 22:04:18,513 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:04:18,513 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:04:18,514 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:04:18,514 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:04:18,520 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:18" (1/1) ... [2024-10-31 22:04:18,560 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:18" (1/1) ... [2024-10-31 22:04:18,640 INFO L138 Inliner]: procedures = 129, calls = 199, calls flagged for inlining = 56, calls inlined = 46, statements flattened = 873 [2024-10-31 22:04:18,643 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:04:18,644 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:04:18,645 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:04:18,645 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:04:18,673 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:18" (1/1) ... [2024-10-31 22:04:18,673 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:18" (1/1) ... [2024-10-31 22:04:18,683 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:18" (1/1) ... [2024-10-31 22:04:18,731 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 4, 4, 4]. 29 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [2, 4, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0]. [2024-10-31 22:04:18,732 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:18" (1/1) ... [2024-10-31 22:04:18,732 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:18" (1/1) ... [2024-10-31 22:04:18,763 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:18" (1/1) ... [2024-10-31 22:04:18,816 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:18" (1/1) ... [2024-10-31 22:04:18,827 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:18" (1/1) ... [2024-10-31 22:04:18,838 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:18" (1/1) ... [2024-10-31 22:04:18,861 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:04:18,862 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:04:18,862 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:04:18,863 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:04:18,864 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:18" (1/1) ... [2024-10-31 22:04:18,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:04:18,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7c449d-5c1d-4868-8fac-72f745926df3/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:04:18,946 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7c449d-5c1d-4868-8fac-72f745926df3/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:04:18,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7c449d-5c1d-4868-8fac-72f745926df3/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:04:18,991 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2024-10-31 22:04:18,991 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2024-10-31 22:04:18,991 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2024-10-31 22:04:18,991 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2024-10-31 22:04:18,992 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2024-10-31 22:04:18,993 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2024-10-31 22:04:18,993 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2024-10-31 22:04:18,993 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2024-10-31 22:04:18,993 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2024-10-31 22:04:18,994 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2024-10-31 22:04:18,994 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2024-10-31 22:04:18,995 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2024-10-31 22:04:18,995 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2024-10-31 22:04:18,995 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2024-10-31 22:04:18,996 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2024-10-31 22:04:18,996 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2024-10-31 22:04:18,996 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2024-10-31 22:04:18,997 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2024-10-31 22:04:18,999 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2024-10-31 22:04:19,000 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2024-10-31 22:04:19,000 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2024-10-31 22:04:19,000 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2024-10-31 22:04:19,000 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2024-10-31 22:04:19,000 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2024-10-31 22:04:19,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:04:19,001 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2024-10-31 22:04:19,001 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2024-10-31 22:04:19,001 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2024-10-31 22:04:19,001 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2024-10-31 22:04:19,001 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2024-10-31 22:04:19,002 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2024-10-31 22:04:19,002 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2024-10-31 22:04:19,002 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2024-10-31 22:04:19,002 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2024-10-31 22:04:19,002 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2024-10-31 22:04:19,002 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2024-10-31 22:04:19,002 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2024-10-31 22:04:19,003 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2024-10-31 22:04:19,004 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2024-10-31 22:04:19,005 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2024-10-31 22:04:19,005 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2024-10-31 22:04:19,005 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2024-10-31 22:04:19,005 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2024-10-31 22:04:19,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:04:19,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:04:19,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-31 22:04:19,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-31 22:04:19,007 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2024-10-31 22:04:19,007 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2024-10-31 22:04:19,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:04:19,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:04:19,305 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:04:19,309 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:04:20,478 INFO L? ?]: Removed 401 outVars from TransFormulas that were not future-live. [2024-10-31 22:04:20,479 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:04:20,509 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:04:20,509 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-31 22:04:20,509 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:04:20 BoogieIcfgContainer [2024-10-31 22:04:20,510 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:04:20,514 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:04:20,515 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:04:20,519 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:04:20,519 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:04:17" (1/3) ... [2024-10-31 22:04:20,521 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c74de80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:04:20, skipping insertion in model container [2024-10-31 22:04:20,521 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:04:18" (2/3) ... [2024-10-31 22:04:20,521 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c74de80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:04:20, skipping insertion in model container [2024-10-31 22:04:20,523 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:04:20" (3/3) ... [2024-10-31 22:04:20,525 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec8_product28.cil.c [2024-10-31 22:04:20,548 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:04:20,548 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 22:04:20,701 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:04:20,721 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, 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;@17b0c9da, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:04:20,722 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-31 22:04:20,733 INFO L276 IsEmpty]: Start isEmpty. Operand has 328 states, 254 states have (on average 1.5196850393700787) internal successors, (386), 258 states have internal predecessors, (386), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-10-31 22:04:20,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-10-31 22:04:20,751 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:04:20,752 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2024-10-31 22:04:20,753 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:04:20,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:20,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1688169557, now seen corresponding path program 1 times [2024-10-31 22:04:20,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:20,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617297305] [2024-10-31 22:04:20,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:20,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:21,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:21,630 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-31 22:04:21,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:21,653 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 22:04:21,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:21,662 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-31 22:04:21,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:21,708 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-31 22:04:21,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:21,717 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-31 22:04:21,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:21,726 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-31 22:04:21,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:21,765 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-31 22:04:21,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:21,770 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-31 22:04:21,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:21,780 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-31 22:04:21,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:21,793 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-10-31 22:04:21,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:21,800 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-31 22:04:21,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:21,810 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-10-31 22:04:21,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:21,818 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-31 22:04:21,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:21,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617297305] [2024-10-31 22:04:21,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617297305] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:04:21,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594838104] [2024-10-31 22:04:21,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:21,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:04:21,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7c449d-5c1d-4868-8fac-72f745926df3/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:04:21,825 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7c449d-5c1d-4868-8fac-72f745926df3/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:04:21,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7c449d-5c1d-4868-8fac-72f745926df3/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:04:22,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:22,269 INFO L255 TraceCheckSpWp]: Trace formula consists of 982 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-10-31 22:04:22,277 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:04:22,298 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-31 22:04:22,298 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:04:22,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594838104] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:04:22,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:04:22,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 8 [2024-10-31 22:04:22,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230240946] [2024-10-31 22:04:22,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:04:22,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-31 22:04:22,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:22,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-31 22:04:22,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:04:22,346 INFO L87 Difference]: Start difference. First operand has 328 states, 254 states have (on average 1.5196850393700787) internal successors, (386), 258 states have internal predecessors, (386), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-10-31 22:04:22,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:04:22,417 INFO L93 Difference]: Finished difference Result 507 states and 734 transitions. [2024-10-31 22:04:22,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-31 22:04:22,420 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 98 [2024-10-31 22:04:22,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:04:22,441 INFO L225 Difference]: With dead ends: 507 [2024-10-31 22:04:22,441 INFO L226 Difference]: Without dead ends: 321 [2024-10-31 22:04:22,447 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:04:22,452 INFO L432 NwaCegarLoop]: 482 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:04:22,453 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:04:22,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2024-10-31 22:04:22,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2024-10-31 22:04:22,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 248 states have (on average 1.5120967741935485) internal successors, (375), 251 states have internal predecessors, (375), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2024-10-31 22:04:22,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 474 transitions. [2024-10-31 22:04:22,555 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 474 transitions. Word has length 98 [2024-10-31 22:04:22,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:04:22,557 INFO L471 AbstractCegarLoop]: Abstraction has 321 states and 474 transitions. [2024-10-31 22:04:22,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-10-31 22:04:22,558 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 474 transitions. [2024-10-31 22:04:22,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-10-31 22:04:22,567 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:04:22,568 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2024-10-31 22:04:22,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7c449d-5c1d-4868-8fac-72f745926df3/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-31 22:04:22,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7c449d-5c1d-4868-8fac-72f745926df3/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-10-31 22:04:22,771 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:04:22,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:22,772 INFO L85 PathProgramCache]: Analyzing trace with hash 491471702, now seen corresponding path program 1 times [2024-10-31 22:04:22,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:22,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969492478] [2024-10-31 22:04:22,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:22,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:22,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:23,072 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-31 22:04:23,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:23,094 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 22:04:23,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:23,102 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-31 22:04:23,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:23,141 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-31 22:04:23,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:23,150 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-31 22:04:23,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:23,157 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-31 22:04:23,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:23,178 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-31 22:04:23,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:23,182 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-31 22:04:23,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:23,190 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-31 22:04:23,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:23,194 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-31 22:04:23,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:23,204 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-10-31 22:04:23,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:23,212 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-31 22:04:23,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:23,218 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-31 22:04:23,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:23,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969492478] [2024-10-31 22:04:23,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969492478] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:04:23,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534759268] [2024-10-31 22:04:23,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:23,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:04:23,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7c449d-5c1d-4868-8fac-72f745926df3/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:04:23,225 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7c449d-5c1d-4868-8fac-72f745926df3/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:04:23,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7c449d-5c1d-4868-8fac-72f745926df3/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:04:23,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:23,616 INFO L255 TraceCheckSpWp]: Trace formula consists of 983 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 22:04:23,620 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:04:23,663 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-31 22:04:23,663 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:04:23,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534759268] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:04:23,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:04:23,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-10-31 22:04:23,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470121488] [2024-10-31 22:04:23,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:04:23,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:04:23,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:23,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:04:23,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-31 22:04:23,666 INFO L87 Difference]: Start difference. First operand 321 states and 474 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, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-10-31 22:04:23,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:04:23,737 INFO L93 Difference]: Finished difference Result 497 states and 715 transitions. [2024-10-31 22:04:23,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:04:23,741 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, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 99 [2024-10-31 22:04:23,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:04:23,744 INFO L225 Difference]: With dead ends: 497 [2024-10-31 22:04:23,744 INFO L226 Difference]: Without dead ends: 324 [2024-10-31 22:04:23,746 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-31 22:04:23,751 INFO L432 NwaCegarLoop]: 472 mSDtfsCounter, 1 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:04:23,752 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 942 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:04:23,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2024-10-31 22:04:23,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 323. [2024-10-31 22:04:23,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 250 states have (on average 1.508) internal successors, (377), 253 states have internal predecessors, (377), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2024-10-31 22:04:23,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 476 transitions. [2024-10-31 22:04:23,800 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 476 transitions. Word has length 99 [2024-10-31 22:04:23,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:04:23,801 INFO L471 AbstractCegarLoop]: Abstraction has 323 states and 476 transitions. [2024-10-31 22:04:23,801 INFO L472 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, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-10-31 22:04:23,801 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 476 transitions. [2024-10-31 22:04:23,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-10-31 22:04:23,812 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:04:23,812 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:04:23,834 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7c449d-5c1d-4868-8fac-72f745926df3/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-31 22:04:24,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7c449d-5c1d-4868-8fac-72f745926df3/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:04:24,013 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:04:24,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:24,014 INFO L85 PathProgramCache]: Analyzing trace with hash -221745491, now seen corresponding path program 1 times [2024-10-31 22:04:24,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:24,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547659122] [2024-10-31 22:04:24,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:24,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:24,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:24,208 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-31 22:04:24,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:24,230 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 22:04:24,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:24,235 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-31 22:04:24,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:24,263 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-31 22:04:24,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:24,267 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-31 22:04:24,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:24,272 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-31 22:04:24,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:24,287 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-31 22:04:24,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:24,292 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-31 22:04:24,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:24,295 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-31 22:04:24,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:24,298 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-31 22:04:24,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:24,302 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-10-31 22:04:24,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:24,305 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-10-31 22:04:24,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:24,309 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-31 22:04:24,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:24,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547659122] [2024-10-31 22:04:24,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547659122] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:04:24,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996313515] [2024-10-31 22:04:24,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:24,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:04:24,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7c449d-5c1d-4868-8fac-72f745926df3/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:04:24,313 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7c449d-5c1d-4868-8fac-72f745926df3/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:04:24,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7c449d-5c1d-4868-8fac-72f745926df3/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 22:04:24,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:24,710 INFO L255 TraceCheckSpWp]: Trace formula consists of 995 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 22:04:24,719 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:04:24,763 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-31 22:04:24,764 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:04:24,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996313515] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:04:24,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:04:24,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-10-31 22:04:24,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920880172] [2024-10-31 22:04:24,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:04:24,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:04:24,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:24,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:04:24,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-31 22:04:24,771 INFO L87 Difference]: Start difference. First operand 323 states and 476 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-10-31 22:04:24,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:04:24,832 INFO L93 Difference]: Finished difference Result 671 states and 1003 transitions. [2024-10-31 22:04:24,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:04:24,833 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), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 105 [2024-10-31 22:04:24,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:04:24,839 INFO L225 Difference]: With dead ends: 671 [2024-10-31 22:04:24,839 INFO L226 Difference]: Without dead ends: 375 [2024-10-31 22:04:24,841 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-31 22:04:24,844 INFO L432 NwaCegarLoop]: 489 mSDtfsCounter, 99 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 917 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:04:24,845 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 917 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:04:24,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2024-10-31 22:04:24,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 367. [2024-10-31 22:04:24,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 283 states have (on average 1.5229681978798586) internal successors, (431), 286 states have internal predecessors, (431), 61 states have call successors, (61), 22 states have call predecessors, (61), 22 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-10-31 22:04:24,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 552 transitions. [2024-10-31 22:04:24,894 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 552 transitions. Word has length 105 [2024-10-31 22:04:24,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:04:24,896 INFO L471 AbstractCegarLoop]: Abstraction has 367 states and 552 transitions. [2024-10-31 22:04:24,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-10-31 22:04:24,897 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 552 transitions. [2024-10-31 22:04:24,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-10-31 22:04:24,901 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:04:24,902 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:04:24,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7c449d-5c1d-4868-8fac-72f745926df3/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-31 22:04:25,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7c449d-5c1d-4868-8fac-72f745926df3/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:04:25,107 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:04:25,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:25,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1964089952, now seen corresponding path program 1 times [2024-10-31 22:04:25,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:25,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628964568] [2024-10-31 22:04:25,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:25,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:25,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:25,352 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-31 22:04:25,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:25,365 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 22:04:25,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:25,370 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-31 22:04:25,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:25,399 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-31 22:04:25,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:25,403 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-31 22:04:25,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:25,409 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-31 22:04:25,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:25,428 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-31 22:04:25,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:25,431 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-31 22:04:25,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:25,436 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-31 22:04:25,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:25,439 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-31 22:04:25,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:25,443 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-31 22:04:25,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:25,446 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-31 22:04:25,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:25,450 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-31 22:04:25,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:25,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628964568] [2024-10-31 22:04:25,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628964568] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:04:25,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348361830] [2024-10-31 22:04:25,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:25,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:04:25,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7c449d-5c1d-4868-8fac-72f745926df3/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:04:25,454 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7c449d-5c1d-4868-8fac-72f745926df3/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:04:25,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7c449d-5c1d-4868-8fac-72f745926df3/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-31 22:04:25,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:25,771 INFO L255 TraceCheckSpWp]: Trace formula consists of 1000 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-31 22:04:25,778 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:04:25,919 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-31 22:04:25,924 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:04:25,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348361830] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:04:25,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:04:25,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2024-10-31 22:04:25,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453902953] [2024-10-31 22:04:25,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:04:25,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:04:25,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:25,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:04:25,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-10-31 22:04:25,929 INFO L87 Difference]: Start difference. First operand 367 states and 552 transitions. Second operand has 5 states, 4 states have (on average 18.25) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-31 22:04:26,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:04:26,028 INFO L93 Difference]: Finished difference Result 725 states and 1094 transitions. [2024-10-31 22:04:26,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:04:26,029 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.25) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 106 [2024-10-31 22:04:26,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:04:26,032 INFO L225 Difference]: With dead ends: 725 [2024-10-31 22:04:26,033 INFO L226 Difference]: Without dead ends: 369 [2024-10-31 22:04:26,036 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-10-31 22:04:26,037 INFO L432 NwaCegarLoop]: 466 mSDtfsCounter, 2 mSDsluCounter, 1387 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1853 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:04:26,039 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1853 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:04:26,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2024-10-31 22:04:26,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 369. [2024-10-31 22:04:26,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 284 states have (on average 1.5211267605633803) internal successors, (432), 288 states have internal predecessors, (432), 61 states have call successors, (61), 22 states have call predecessors, (61), 23 states have return successors, (62), 60 states have call predecessors, (62), 60 states have call successors, (62) [2024-10-31 22:04:26,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 555 transitions. [2024-10-31 22:04:26,062 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 555 transitions. Word has length 106 [2024-10-31 22:04:26,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:04:26,064 INFO L471 AbstractCegarLoop]: Abstraction has 369 states and 555 transitions. [2024-10-31 22:04:26,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.25) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-31 22:04:26,065 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 555 transitions. [2024-10-31 22:04:26,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-10-31 22:04:26,067 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:04:26,067 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:04:26,092 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7c449d-5c1d-4868-8fac-72f745926df3/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-31 22:04:26,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7c449d-5c1d-4868-8fac-72f745926df3/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:04:26,274 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:04:26,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:26,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1110095373, now seen corresponding path program 1 times [2024-10-31 22:04:26,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:26,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235696369] [2024-10-31 22:04:26,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:26,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:26,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:26,466 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-31 22:04:26,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:26,483 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 22:04:26,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:26,487 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-31 22:04:26,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:26,519 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-31 22:04:26,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:26,549 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-31 22:04:26,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:26,554 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-31 22:04:26,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:26,574 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-31 22:04:26,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:26,577 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-31 22:04:26,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:26,582 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-31 22:04:26,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:26,585 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-10-31 22:04:26,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:26,590 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-31 22:04:26,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:26,596 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-10-31 22:04:26,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:26,599 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-31 22:04:26,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:26,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235696369] [2024-10-31 22:04:26,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235696369] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:04:26,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210843663] [2024-10-31 22:04:26,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:26,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:04:26,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7c449d-5c1d-4868-8fac-72f745926df3/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:04:26,604 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7c449d-5c1d-4868-8fac-72f745926df3/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:04:26,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7c449d-5c1d-4868-8fac-72f745926df3/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-31 22:04:26,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:26,926 INFO L255 TraceCheckSpWp]: Trace formula consists of 1001 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 22:04:26,932 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:04:27,011 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-31 22:04:27,012 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:04:27,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210843663] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:04:27,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:04:27,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2024-10-31 22:04:27,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027721170] [2024-10-31 22:04:27,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:04:27,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:04:27,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:27,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:04:27,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2024-10-31 22:04:27,017 INFO L87 Difference]: Start difference. First operand 369 states and 555 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-31 22:04:27,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:04:27,105 INFO L93 Difference]: Finished difference Result 727 states and 1099 transitions. [2024-10-31 22:04:27,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:04:27,106 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 107 [2024-10-31 22:04:27,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:04:27,110 INFO L225 Difference]: With dead ends: 727 [2024-10-31 22:04:27,110 INFO L226 Difference]: Without dead ends: 371 [2024-10-31 22:04:27,112 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2024-10-31 22:04:27,113 INFO L432 NwaCegarLoop]: 464 mSDtfsCounter, 2 mSDsluCounter, 1375 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1839 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:04:27,114 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1839 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:04:27,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2024-10-31 22:04:27,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2024-10-31 22:04:27,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 285 states have (on average 1.5192982456140351) internal successors, (433), 290 states have internal predecessors, (433), 61 states have call successors, (61), 22 states have call predecessors, (61), 24 states have return successors, (67), 60 states have call predecessors, (67), 60 states have call successors, (67) [2024-10-31 22:04:27,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 561 transitions. [2024-10-31 22:04:27,142 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 561 transitions. Word has length 107 [2024-10-31 22:04:27,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:04:27,143 INFO L471 AbstractCegarLoop]: Abstraction has 371 states and 561 transitions. [2024-10-31 22:04:27,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-31 22:04:27,143 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 561 transitions. [2024-10-31 22:04:27,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-10-31 22:04:27,146 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:04:27,146 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:04:27,168 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7c449d-5c1d-4868-8fac-72f745926df3/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-31 22:04:27,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7c449d-5c1d-4868-8fac-72f745926df3/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:04:27,347 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:04:27,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:27,347 INFO L85 PathProgramCache]: Analyzing trace with hash 303759806, now seen corresponding path program 1 times [2024-10-31 22:04:27,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:27,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428393037] [2024-10-31 22:04:27,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:27,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:27,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:27,536 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-31 22:04:27,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:27,552 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 22:04:27,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:27,556 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-31 22:04:27,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:27,560 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-31 22:04:27,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:27,564 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-31 22:04:27,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:27,603 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-31 22:04:27,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:27,623 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-31 22:04:27,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:27,626 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-31 22:04:27,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:27,630 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-10-31 22:04:27,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:27,633 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-10-31 22:04:27,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:27,639 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-10-31 22:04:27,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:27,647 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-10-31 22:04:27,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:27,655 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-31 22:04:27,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:27,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428393037] [2024-10-31 22:04:27,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428393037] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:04:27,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:04:27,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-31 22:04:27,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100525164] [2024-10-31 22:04:27,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:04:27,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-31 22:04:27,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:27,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-31 22:04:27,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:04:27,659 INFO L87 Difference]: Start difference. First operand 371 states and 561 transitions. Second operand has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-31 22:04:29,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:04:29,940 INFO L93 Difference]: Finished difference Result 791 states and 1202 transitions. [2024-10-31 22:04:29,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 22:04:29,942 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 108 [2024-10-31 22:04:29,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:04:29,946 INFO L225 Difference]: With dead ends: 791 [2024-10-31 22:04:29,946 INFO L226 Difference]: Without dead ends: 443 [2024-10-31 22:04:29,950 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-10-31 22:04:29,951 INFO L432 NwaCegarLoop]: 169 mSDtfsCounter, 822 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 1793 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 2041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 1793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:04:29,952 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [823 Valid, 926 Invalid, 2041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 1793 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-10-31 22:04:29,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2024-10-31 22:04:30,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 371. [2024-10-31 22:04:30,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 285 states have (on average 1.5192982456140351) internal successors, (433), 290 states have internal predecessors, (433), 61 states have call successors, (61), 22 states have call predecessors, (61), 24 states have return successors, (66), 60 states have call predecessors, (66), 60 states have call successors, (66) [2024-10-31 22:04:30,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 560 transitions. [2024-10-31 22:04:30,012 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 560 transitions. Word has length 108 [2024-10-31 22:04:30,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:04:30,014 INFO L471 AbstractCegarLoop]: Abstraction has 371 states and 560 transitions. [2024-10-31 22:04:30,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-31 22:04:30,015 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 560 transitions. [2024-10-31 22:04:30,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-10-31 22:04:30,017 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:04:30,018 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:04:30,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:04:30,018 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:04:30,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:30,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1105541005, now seen corresponding path program 2 times [2024-10-31 22:04:30,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:30,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788499851] [2024-10-31 22:04:30,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:30,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:30,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:30,200 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-31 22:04:30,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:30,214 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 22:04:30,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:30,220 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-31 22:04:30,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:30,225 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-31 22:04:30,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:30,230 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-31 22:04:30,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:30,263 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-31 22:04:30,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:30,283 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-31 22:04:30,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:30,287 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-31 22:04:30,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:30,292 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-31 22:04:30,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:30,295 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-31 22:04:30,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:30,299 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-10-31 22:04:30,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:30,302 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-10-31 22:04:30,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:30,310 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-31 22:04:30,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:30,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788499851] [2024-10-31 22:04:30,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788499851] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:04:30,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:04:30,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-31 22:04:30,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312517078] [2024-10-31 22:04:30,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:04:30,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-31 22:04:30,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:30,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-31 22:04:30,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:04:30,316 INFO L87 Difference]: Start difference. First operand 371 states and 560 transitions. Second operand has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-31 22:04:32,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:04:32,570 INFO L93 Difference]: Finished difference Result 793 states and 1205 transitions. [2024-10-31 22:04:32,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 22:04:32,571 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 109 [2024-10-31 22:04:32,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:04:32,577 INFO L225 Difference]: With dead ends: 793 [2024-10-31 22:04:32,577 INFO L226 Difference]: Without dead ends: 445 [2024-10-31 22:04:32,580 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-10-31 22:04:32,582 INFO L432 NwaCegarLoop]: 169 mSDtfsCounter, 781 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 1889 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 2133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 1889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:04:32,583 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [782 Valid, 926 Invalid, 2133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 1889 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-10-31 22:04:32,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2024-10-31 22:04:32,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 373. [2024-10-31 22:04:32,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 286 states have (on average 1.5174825174825175) internal successors, (434), 292 states have internal predecessors, (434), 61 states have call successors, (61), 22 states have call predecessors, (61), 25 states have return successors, (68), 60 states have call predecessors, (68), 60 states have call successors, (68) [2024-10-31 22:04:32,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 563 transitions. [2024-10-31 22:04:32,655 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 563 transitions. Word has length 109 [2024-10-31 22:04:32,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:04:32,656 INFO L471 AbstractCegarLoop]: Abstraction has 373 states and 563 transitions. [2024-10-31 22:04:32,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-31 22:04:32,656 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 563 transitions. [2024-10-31 22:04:32,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-10-31 22:04:32,660 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:04:32,660 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:04:32,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:04:32,661 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:04:32,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:32,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1885955783, now seen corresponding path program 1 times [2024-10-31 22:04:32,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:32,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023193934] [2024-10-31 22:04:32,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:32,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:32,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:32,832 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-31 22:04:32,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:32,846 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 22:04:32,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:32,849 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-31 22:04:32,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:32,853 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-31 22:04:32,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:32,857 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-31 22:04:32,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:32,886 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-31 22:04:32,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:32,933 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-31 22:04:32,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:32,936 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-31 22:04:32,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:32,939 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-31 22:04:32,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:32,942 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-10-31 22:04:32,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:32,945 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-10-31 22:04:32,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:32,950 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-10-31 22:04:32,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:32,953 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-31 22:04:32,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:32,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023193934] [2024-10-31 22:04:32,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023193934] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:04:32,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:04:32,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-10-31 22:04:32,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746657523] [2024-10-31 22:04:32,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:04:32,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-31 22:04:32,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:32,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-31 22:04:32,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-10-31 22:04:32,957 INFO L87 Difference]: Start difference. First operand 373 states and 563 transitions. Second operand has 11 states, 10 states have (on average 7.6) internal successors, (76), 8 states have internal predecessors, (76), 4 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2024-10-31 22:04:35,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:04:35,614 INFO L93 Difference]: Finished difference Result 791 states and 1200 transitions. [2024-10-31 22:04:35,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-31 22:04:35,615 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.6) internal successors, (76), 8 states have internal predecessors, (76), 4 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 110 [2024-10-31 22:04:35,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:04:35,619 INFO L225 Difference]: With dead ends: 791 [2024-10-31 22:04:35,619 INFO L226 Difference]: Without dead ends: 445 [2024-10-31 22:04:35,620 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2024-10-31 22:04:35,621 INFO L432 NwaCegarLoop]: 167 mSDtfsCounter, 802 mSDsluCounter, 1162 mSDsCounter, 0 mSdLazyCounter, 3122 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 803 SdHoareTripleChecker+Valid, 1329 SdHoareTripleChecker+Invalid, 3378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 3122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-31 22:04:35,622 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [803 Valid, 1329 Invalid, 3378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [256 Valid, 3122 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-31 22:04:35,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2024-10-31 22:04:35,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 373. [2024-10-31 22:04:35,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 286 states have (on average 1.5174825174825175) internal successors, (434), 292 states have internal predecessors, (434), 61 states have call successors, (61), 22 states have call predecessors, (61), 25 states have return successors, (67), 60 states have call predecessors, (67), 60 states have call successors, (67) [2024-10-31 22:04:35,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 562 transitions. [2024-10-31 22:04:35,657 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 562 transitions. Word has length 110 [2024-10-31 22:04:35,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:04:35,657 INFO L471 AbstractCegarLoop]: Abstraction has 373 states and 562 transitions. [2024-10-31 22:04:35,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.6) internal successors, (76), 8 states have internal predecessors, (76), 4 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2024-10-31 22:04:35,658 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 562 transitions. [2024-10-31 22:04:35,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-10-31 22:04:35,660 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:04:35,660 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:04:35,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 22:04:35,661 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:04:35,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:35,661 INFO L85 PathProgramCache]: Analyzing trace with hash -2027319372, now seen corresponding path program 2 times [2024-10-31 22:04:35,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:35,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140127945] [2024-10-31 22:04:35,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:35,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:35,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:35,866 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-31 22:04:35,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:35,880 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 22:04:35,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:35,884 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-31 22:04:35,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:35,887 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-31 22:04:35,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:35,890 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-31 22:04:35,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:35,928 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-31 22:04:35,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:35,970 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-31 22:04:35,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:35,973 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-31 22:04:35,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:35,975 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-31 22:04:35,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:35,978 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-31 22:04:35,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:35,981 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-10-31 22:04:35,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:35,983 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-10-31 22:04:35,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:35,988 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-31 22:04:35,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:35,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140127945] [2024-10-31 22:04:35,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140127945] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:04:35,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:04:35,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-10-31 22:04:35,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832884596] [2024-10-31 22:04:35,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:04:35,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-31 22:04:35,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:35,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-31 22:04:35,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-10-31 22:04:35,993 INFO L87 Difference]: Start difference. First operand 373 states and 562 transitions. Second operand has 11 states, 10 states have (on average 7.7) internal successors, (77), 8 states have internal predecessors, (77), 4 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2024-10-31 22:04:38,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:04:38,706 INFO L93 Difference]: Finished difference Result 793 states and 1206 transitions. [2024-10-31 22:04:38,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-31 22:04:38,707 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.7) internal successors, (77), 8 states have internal predecessors, (77), 4 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 111 [2024-10-31 22:04:38,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:04:38,710 INFO L225 Difference]: With dead ends: 793 [2024-10-31 22:04:38,710 INFO L226 Difference]: Without dead ends: 447 [2024-10-31 22:04:38,712 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2024-10-31 22:04:38,714 INFO L432 NwaCegarLoop]: 168 mSDtfsCounter, 793 mSDsluCounter, 1162 mSDsCounter, 0 mSdLazyCounter, 3197 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 1330 SdHoareTripleChecker+Invalid, 3441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 3197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-10-31 22:04:38,714 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 1330 Invalid, 3441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 3197 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-10-31 22:04:38,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2024-10-31 22:04:38,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 375. [2024-10-31 22:04:38,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 287 states have (on average 1.5156794425087108) internal successors, (435), 294 states have internal predecessors, (435), 61 states have call successors, (61), 22 states have call predecessors, (61), 26 states have return successors, (72), 60 states have call predecessors, (72), 60 states have call successors, (72) [2024-10-31 22:04:38,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 568 transitions. [2024-10-31 22:04:38,755 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 568 transitions. Word has length 111 [2024-10-31 22:04:38,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:04:38,756 INFO L471 AbstractCegarLoop]: Abstraction has 375 states and 568 transitions. [2024-10-31 22:04:38,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.7) internal successors, (77), 8 states have internal predecessors, (77), 4 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2024-10-31 22:04:38,757 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 568 transitions. [2024-10-31 22:04:38,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-10-31 22:04:38,759 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:04:38,759 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:04:38,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-31 22:04:38,760 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:04:38,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:38,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1877256588, now seen corresponding path program 1 times [2024-10-31 22:04:38,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:38,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620570217] [2024-10-31 22:04:38,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:38,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:38,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:38,884 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-31 22:04:38,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:38,897 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 22:04:38,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:38,901 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-31 22:04:38,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:38,907 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-31 22:04:38,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:38,911 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-31 22:04:38,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:38,916 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-31 22:04:38,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:38,931 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-31 22:04:38,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:38,934 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-10-31 22:04:38,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:38,937 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-31 22:04:38,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:38,940 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-31 22:04:38,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:38,944 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-10-31 22:04:38,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:38,946 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-10-31 22:04:38,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:38,950 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-31 22:04:38,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:38,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620570217] [2024-10-31 22:04:38,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620570217] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:04:38,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076529602] [2024-10-31 22:04:38,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:38,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:04:38,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7c449d-5c1d-4868-8fac-72f745926df3/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:04:38,953 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7c449d-5c1d-4868-8fac-72f745926df3/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:04:38,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7c449d-5c1d-4868-8fac-72f745926df3/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-31 22:04:39,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:39,318 INFO L255 TraceCheckSpWp]: Trace formula consists of 1006 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 22:04:39,360 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:04:39,402 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-31 22:04:39,402 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:04:39,531 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-31 22:04:39,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076529602] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:04:39,531 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:04:39,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 10 [2024-10-31 22:04:39,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734237082] [2024-10-31 22:04:39,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:04:39,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-31 22:04:39,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:39,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-31 22:04:39,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-31 22:04:39,538 INFO L87 Difference]: Start difference. First operand 375 states and 568 transitions. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 7 states have internal predecessors, (106), 2 states have call successors, (28), 5 states have call predecessors, (28), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-10-31 22:04:41,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:04:41,926 INFO L93 Difference]: Finished difference Result 947 states and 1504 transitions. [2024-10-31 22:04:41,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 22:04:41,927 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 7 states have internal predecessors, (106), 2 states have call successors, (28), 5 states have call predecessors, (28), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 112 [2024-10-31 22:04:41,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:04:41,935 INFO L225 Difference]: With dead ends: 947 [2024-10-31 22:04:41,936 INFO L226 Difference]: Without dead ends: 774 [2024-10-31 22:04:41,938 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-10-31 22:04:41,939 INFO L432 NwaCegarLoop]: 209 mSDtfsCounter, 1182 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 1536 mSolverCounterSat, 352 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1227 SdHoareTripleChecker+Valid, 1092 SdHoareTripleChecker+Invalid, 1888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 352 IncrementalHoareTripleChecker+Valid, 1536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:04:41,940 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1227 Valid, 1092 Invalid, 1888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [352 Valid, 1536 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-10-31 22:04:41,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2024-10-31 22:04:42,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 678. [2024-10-31 22:04:42,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 526 states have (on average 1.5836501901140685) internal successors, (833), 533 states have internal predecessors, (833), 125 states have call successors, (125), 22 states have call predecessors, (125), 26 states have return successors, (146), 124 states have call predecessors, (146), 124 states have call successors, (146) [2024-10-31 22:04:42,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 1104 transitions. [2024-10-31 22:04:42,054 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 1104 transitions. Word has length 112 [2024-10-31 22:04:42,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:04:42,055 INFO L471 AbstractCegarLoop]: Abstraction has 678 states and 1104 transitions. [2024-10-31 22:04:42,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 7 states have internal predecessors, (106), 2 states have call successors, (28), 5 states have call predecessors, (28), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-10-31 22:04:42,056 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 1104 transitions. [2024-10-31 22:04:42,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-10-31 22:04:42,061 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:04:42,061 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:04:42,088 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7c449d-5c1d-4868-8fac-72f745926df3/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-31 22:04:42,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db7c449d-5c1d-4868-8fac-72f745926df3/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:04:42,271 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:04:42,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:42,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1908706807, now seen corresponding path program 1 times [2024-10-31 22:04:42,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:42,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556649714] [2024-10-31 22:04:42,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:42,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:42,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:42,363 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-31 22:04:42,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:42,378 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 22:04:42,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:42,383 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-31 22:04:42,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:42,387 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-31 22:04:42,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:42,391 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-31 22:04:42,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:42,395 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-31 22:04:42,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:42,411 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-31 22:04:42,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:42,414 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-31 22:04:42,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:42,417 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-31 22:04:42,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:42,420 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-31 22:04:42,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:42,423 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-10-31 22:04:42,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:42,426 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-10-31 22:04:42,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:42,430 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-31 22:04:42,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:42,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556649714] [2024-10-31 22:04:42,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556649714] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:04:42,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:04:42,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 22:04:42,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127755151] [2024-10-31 22:04:42,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:04:42,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:04:42,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:42,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:04:42,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:04:42,433 INFO L87 Difference]: Start difference. First operand 678 states and 1104 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-10-31 22:04:44,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:04:44,001 INFO L93 Difference]: Finished difference Result 1668 states and 2783 transitions. [2024-10-31 22:04:44,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:04:44,002 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 118 [2024-10-31 22:04:44,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:04:44,009 INFO L225 Difference]: With dead ends: 1668 [2024-10-31 22:04:44,010 INFO L226 Difference]: Without dead ends: 1058 [2024-10-31 22:04:44,013 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-31 22:04:44,014 INFO L432 NwaCegarLoop]: 182 mSDtfsCounter, 883 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 1038 mSolverCounterSat, 280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 898 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 1318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 280 IncrementalHoareTripleChecker+Valid, 1038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-31 22:04:44,014 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [898 Valid, 676 Invalid, 1318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [280 Valid, 1038 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-31 22:04:44,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1058 states. [2024-10-31 22:04:44,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1058 to 978. [2024-10-31 22:04:44,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 978 states, 762 states have (on average 1.5984251968503937) internal successors, (1218), 769 states have internal predecessors, (1218), 189 states have call successors, (189), 22 states have call predecessors, (189), 26 states have return successors, (220), 188 states have call predecessors, (220), 188 states have call successors, (220) [2024-10-31 22:04:44,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1627 transitions. [2024-10-31 22:04:44,155 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1627 transitions. Word has length 118 [2024-10-31 22:04:44,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:04:44,156 INFO L471 AbstractCegarLoop]: Abstraction has 978 states and 1627 transitions. [2024-10-31 22:04:44,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-10-31 22:04:44,156 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1627 transitions. [2024-10-31 22:04:44,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-10-31 22:04:44,162 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:04:44,163 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:04:44,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-31 22:04:44,163 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:04:44,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:44,164 INFO L85 PathProgramCache]: Analyzing trace with hash 315871257, now seen corresponding path program 1 times [2024-10-31 22:04:44,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:44,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866076499] [2024-10-31 22:04:44,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:44,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:44,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:44,250 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-31 22:04:44,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:44,264 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12