./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec8_product22.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_e12bc7ad-b7bc-4250-948e-814086044b7c/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12bc7ad-b7bc-4250-948e-814086044b7c/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_e12bc7ad-b7bc-4250-948e-814086044b7c/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12bc7ad-b7bc-4250-948e-814086044b7c/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec8_product22.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12bc7ad-b7bc-4250-948e-814086044b7c/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_e12bc7ad-b7bc-4250-948e-814086044b7c/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 b01b58381ce8e0150d6e0f0de264371fec0586e2ead4f1a313de13afba1fd67c --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 21:56:13,040 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 21:56:13,134 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12bc7ad-b7bc-4250-948e-814086044b7c/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 21:56:13,142 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 21:56:13,143 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 21:56:13,182 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 21:56:13,183 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 21:56:13,184 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 21:56:13,185 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 21:56:13,187 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 21:56:13,189 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 21:56:13,189 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 21:56:13,190 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 21:56:13,191 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 21:56:13,191 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 21:56:13,195 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 21:56:13,195 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 21:56:13,195 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 21:56:13,196 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 21:56:13,196 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 21:56:13,196 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 21:56:13,199 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 21:56:13,200 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 21:56:13,200 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 21:56:13,200 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 21:56:13,200 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 21:56:13,201 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 21:56:13,201 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 21:56:13,201 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 21:56:13,201 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 21:56:13,202 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 21:56:13,202 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 21:56:13,202 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 21:56:13,204 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 21:56:13,205 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 21:56:13,206 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 21:56:13,206 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 21:56:13,206 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 21:56:13,207 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 21:56:13,208 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 21:56:13,208 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 21:56:13,208 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 21:56:13,209 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_e12bc7ad-b7bc-4250-948e-814086044b7c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12bc7ad-b7bc-4250-948e-814086044b7c/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b01b58381ce8e0150d6e0f0de264371fec0586e2ead4f1a313de13afba1fd67c [2024-10-31 21:56:13,514 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 21:56:13,545 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 21:56:13,548 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 21:56:13,549 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 21:56:13,550 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 21:56:13,551 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12bc7ad-b7bc-4250-948e-814086044b7c/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/product-lines/email_spec8_product22.cil.c Unable to find full path for "g++" [2024-10-31 21:56:15,866 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 21:56:16,267 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 21:56:16,268 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12bc7ad-b7bc-4250-948e-814086044b7c/sv-benchmarks/c/product-lines/email_spec8_product22.cil.c [2024-10-31 21:56:16,309 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12bc7ad-b7bc-4250-948e-814086044b7c/bin/uautomizer-verify-4GaUIPS5ZU/data/642de29e3/3e92b41b36c543b4b7bbdfa41581492e/FLAG0b778c889 [2024-10-31 21:56:16,445 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12bc7ad-b7bc-4250-948e-814086044b7c/bin/uautomizer-verify-4GaUIPS5ZU/data/642de29e3/3e92b41b36c543b4b7bbdfa41581492e [2024-10-31 21:56:16,448 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 21:56:16,450 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 21:56:16,451 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 21:56:16,451 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 21:56:16,458 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 21:56:16,458 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 09:56:16" (1/1) ... [2024-10-31 21:56:16,460 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3995da66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:16, skipping insertion in model container [2024-10-31 21:56:16,460 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 09:56:16" (1/1) ... [2024-10-31 21:56:16,531 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 21:56:17,093 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_e12bc7ad-b7bc-4250-948e-814086044b7c/sv-benchmarks/c/product-lines/email_spec8_product22.cil.c[29813,29826] [2024-10-31 21:56:17,232 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 21:56:17,252 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 21:56:17,264 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [48] [2024-10-31 21:56:17,266 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [375] [2024-10-31 21:56:17,267 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [787] [2024-10-31 21:56:17,267 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1006] [2024-10-31 21:56:17,267 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1372] [2024-10-31 21:56:17,267 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [1381] [2024-10-31 21:56:17,268 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [1398] [2024-10-31 21:56:17,268 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1704] [2024-10-31 21:56:17,268 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [1739] [2024-10-31 21:56:17,269 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [2804] [2024-10-31 21:56:17,269 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EncryptAutoResponder_spec.i","") [2907] [2024-10-31 21:56:17,374 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_e12bc7ad-b7bc-4250-948e-814086044b7c/sv-benchmarks/c/product-lines/email_spec8_product22.cil.c[29813,29826] [2024-10-31 21:56:17,458 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 21:56:17,506 INFO L204 MainTranslator]: Completed translation [2024-10-31 21:56:17,506 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:17 WrapperNode [2024-10-31 21:56:17,507 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 21:56:17,508 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 21:56:17,508 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 21:56:17,509 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 21:56:17,518 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:17" (1/1) ... [2024-10-31 21:56:17,563 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:17" (1/1) ... [2024-10-31 21:56:17,686 INFO L138 Inliner]: procedures = 129, calls = 193, calls flagged for inlining = 60, calls inlined = 55, statements flattened = 1038 [2024-10-31 21:56:17,686 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 21:56:17,687 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 21:56:17,687 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 21:56:17,692 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 21:56:17,737 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:17" (1/1) ... [2024-10-31 21:56:17,738 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:17" (1/1) ... [2024-10-31 21:56:17,758 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:17" (1/1) ... [2024-10-31 21:56:17,816 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 21:56:17,816 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:17" (1/1) ... [2024-10-31 21:56:17,817 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:17" (1/1) ... [2024-10-31 21:56:17,854 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:17" (1/1) ... [2024-10-31 21:56:17,869 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:17" (1/1) ... [2024-10-31 21:56:17,880 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:17" (1/1) ... [2024-10-31 21:56:17,892 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:17" (1/1) ... [2024-10-31 21:56:17,901 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 21:56:17,902 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 21:56:17,903 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 21:56:17,903 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 21:56:17,904 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:17" (1/1) ... [2024-10-31 21:56:17,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 21:56:17,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12bc7ad-b7bc-4250-948e-814086044b7c/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:56:17,941 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12bc7ad-b7bc-4250-948e-814086044b7c/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 21:56:17,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12bc7ad-b7bc-4250-948e-814086044b7c/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 21:56:17,980 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2024-10-31 21:56:17,981 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2024-10-31 21:56:17,981 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2024-10-31 21:56:17,981 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2024-10-31 21:56:17,981 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2024-10-31 21:56:17,981 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2024-10-31 21:56:17,981 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2024-10-31 21:56:17,982 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2024-10-31 21:56:17,982 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2024-10-31 21:56:17,982 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2024-10-31 21:56:17,982 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2024-10-31 21:56:17,982 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2024-10-31 21:56:17,982 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2024-10-31 21:56:17,983 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2024-10-31 21:56:17,983 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2024-10-31 21:56:17,983 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2024-10-31 21:56:17,983 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2024-10-31 21:56:17,983 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2024-10-31 21:56:17,983 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2024-10-31 21:56:17,984 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2024-10-31 21:56:17,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 21:56:17,985 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2024-10-31 21:56:17,985 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2024-10-31 21:56:17,985 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2024-10-31 21:56:17,985 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2024-10-31 21:56:17,985 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2024-10-31 21:56:17,986 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2024-10-31 21:56:17,987 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2024-10-31 21:56:17,987 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2024-10-31 21:56:17,987 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2024-10-31 21:56:17,988 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2024-10-31 21:56:17,988 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2024-10-31 21:56:17,988 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2024-10-31 21:56:17,988 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2024-10-31 21:56:17,988 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2024-10-31 21:56:17,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 21:56:17,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 21:56:17,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-31 21:56:17,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-31 21:56:17,989 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2024-10-31 21:56:17,990 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2024-10-31 21:56:17,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 21:56:17,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 21:56:18,270 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 21:56:18,274 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 21:56:19,505 INFO L? ?]: Removed 439 outVars from TransFormulas that were not future-live. [2024-10-31 21:56:19,505 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 21:56:19,536 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 21:56:19,536 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-31 21:56:19,540 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 09:56:19 BoogieIcfgContainer [2024-10-31 21:56:19,540 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 21:56:19,543 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 21:56:19,543 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 21:56:19,548 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 21:56:19,549 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 09:56:16" (1/3) ... [2024-10-31 21:56:19,550 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ceb54c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 09:56:19, skipping insertion in model container [2024-10-31 21:56:19,550 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:17" (2/3) ... [2024-10-31 21:56:19,552 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ceb54c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 09:56:19, skipping insertion in model container [2024-10-31 21:56:19,552 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 09:56:19" (3/3) ... [2024-10-31 21:56:19,553 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec8_product22.cil.c [2024-10-31 21:56:19,573 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 21:56:19,573 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 21:56:19,668 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 21:56:19,676 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;@7daa3803, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 21:56:19,676 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-31 21:56:19,687 INFO L276 IsEmpty]: Start isEmpty. Operand has 322 states, 252 states have (on average 1.5277777777777777) internal successors, (385), 256 states have internal predecessors, (385), 50 states have call successors, (50), 18 states have call predecessors, (50), 18 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-10-31 21:56:19,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-10-31 21:56:19,732 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:56:19,733 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] [2024-10-31 21:56:19,733 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:56:19,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:19,743 INFO L85 PathProgramCache]: Analyzing trace with hash -113168014, now seen corresponding path program 1 times [2024-10-31 21:56:19,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:19,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357931049] [2024-10-31 21:56:19,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:19,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:19,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:20,509 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-31 21:56:20,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:20,534 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 21:56:20,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:20,548 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-31 21:56:20,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:20,594 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-31 21:56:20,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:20,600 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-31 21:56:20,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:20,606 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-31 21:56:20,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:20,650 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-31 21:56:20,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:20,670 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-31 21:56:20,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:20,674 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-31 21:56:20,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:20,679 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-31 21:56:20,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:20,684 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-10-31 21:56:20,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:20,691 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 21:56:20,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:20,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357931049] [2024-10-31 21:56:20,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357931049] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:56:20,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384339042] [2024-10-31 21:56:20,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:20,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:56:20,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12bc7ad-b7bc-4250-948e-814086044b7c/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:56:20,696 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12bc7ad-b7bc-4250-948e-814086044b7c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:56:20,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12bc7ad-b7bc-4250-948e-814086044b7c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 21:56:21,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:21,081 INFO L255 TraceCheckSpWp]: Trace formula consists of 919 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-10-31 21:56:21,097 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:56:21,135 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 21:56:21,135 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 21:56:21,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384339042] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:56:21,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 21:56:21,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2024-10-31 21:56:21,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635226370] [2024-10-31 21:56:21,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:56:21,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-31 21:56:21,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:21,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-31 21:56:21,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-31 21:56:21,182 INFO L87 Difference]: Start difference. First operand has 322 states, 252 states have (on average 1.5277777777777777) internal successors, (385), 256 states have internal predecessors, (385), 50 states have call successors, (50), 18 states have call predecessors, (50), 18 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 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-10-31 21:56:21,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:56:21,270 INFO L93 Difference]: Finished difference Result 485 states and 716 transitions. [2024-10-31 21:56:21,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-31 21:56:21,275 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 89 [2024-10-31 21:56:21,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:56:21,297 INFO L225 Difference]: With dead ends: 485 [2024-10-31 21:56:21,297 INFO L226 Difference]: Without dead ends: 315 [2024-10-31 21:56:21,303 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 107 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 21:56:21,309 INFO L432 NwaCegarLoop]: 481 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, 481 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 21:56:21,311 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 21:56:21,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2024-10-31 21:56:21,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2024-10-31 21:56:21,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 246 states have (on average 1.5203252032520325) internal successors, (374), 249 states have internal predecessors, (374), 50 states have call successors, (50), 18 states have call predecessors, (50), 18 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2024-10-31 21:56:21,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 473 transitions. [2024-10-31 21:56:21,415 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 473 transitions. Word has length 89 [2024-10-31 21:56:21,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:56:21,416 INFO L471 AbstractCegarLoop]: Abstraction has 315 states and 473 transitions. [2024-10-31 21:56:21,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-10-31 21:56:21,417 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 473 transitions. [2024-10-31 21:56:21,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-10-31 21:56:21,428 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:56:21,429 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] [2024-10-31 21:56:21,452 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12bc7ad-b7bc-4250-948e-814086044b7c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-31 21:56:21,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12bc7ad-b7bc-4250-948e-814086044b7c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-10-31 21:56:21,630 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:56:21,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:21,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1652077357, now seen corresponding path program 1 times [2024-10-31 21:56:21,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:21,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324665278] [2024-10-31 21:56:21,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:21,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:21,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:21,944 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-31 21:56:21,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:21,963 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 21:56:21,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:21,969 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-31 21:56:21,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:22,009 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-31 21:56:22,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:22,015 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-31 21:56:22,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:22,024 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-31 21:56:22,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:22,045 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-31 21:56:22,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:22,065 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-31 21:56:22,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:22,069 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-31 21:56:22,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:22,075 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-31 21:56:22,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:22,080 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-10-31 21:56:22,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:22,086 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 21:56:22,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:22,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324665278] [2024-10-31 21:56:22,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324665278] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:56:22,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427995301] [2024-10-31 21:56:22,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:22,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:56:22,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12bc7ad-b7bc-4250-948e-814086044b7c/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:56:22,092 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12bc7ad-b7bc-4250-948e-814086044b7c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:56:22,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12bc7ad-b7bc-4250-948e-814086044b7c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 21:56:22,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:22,488 INFO L255 TraceCheckSpWp]: Trace formula consists of 920 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 21:56:22,493 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:56:22,531 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 21:56:22,531 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 21:56:22,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427995301] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:56:22,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 21:56:22,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2024-10-31 21:56:22,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241015129] [2024-10-31 21:56:22,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:56:22,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 21:56:22,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:22,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 21:56:22,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-10-31 21:56:22,542 INFO L87 Difference]: Start difference. First operand 315 states and 473 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-10-31 21:56:22,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:56:22,601 INFO L93 Difference]: Finished difference Result 475 states and 697 transitions. [2024-10-31 21:56:22,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 21:56:22,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 90 [2024-10-31 21:56:22,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:56:22,605 INFO L225 Difference]: With dead ends: 475 [2024-10-31 21:56:22,605 INFO L226 Difference]: Without dead ends: 318 [2024-10-31 21:56:22,611 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-10-31 21:56:22,612 INFO L432 NwaCegarLoop]: 471 mSDtfsCounter, 1 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 940 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 21:56:22,615 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 940 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 21:56:22,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2024-10-31 21:56:22,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 317. [2024-10-31 21:56:22,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 248 states have (on average 1.5161290322580645) internal successors, (376), 251 states have internal predecessors, (376), 50 states have call successors, (50), 18 states have call predecessors, (50), 18 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2024-10-31 21:56:22,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 475 transitions. [2024-10-31 21:56:22,660 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 475 transitions. Word has length 90 [2024-10-31 21:56:22,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:56:22,661 INFO L471 AbstractCegarLoop]: Abstraction has 317 states and 475 transitions. [2024-10-31 21:56:22,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-10-31 21:56:22,661 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 475 transitions. [2024-10-31 21:56:22,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-10-31 21:56:22,665 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:56:22,665 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] [2024-10-31 21:56:22,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12bc7ad-b7bc-4250-948e-814086044b7c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-31 21:56:22,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12bc7ad-b7bc-4250-948e-814086044b7c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:56:22,866 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:56:22,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:22,867 INFO L85 PathProgramCache]: Analyzing trace with hash 551248029, now seen corresponding path program 1 times [2024-10-31 21:56:22,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:22,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705573953] [2024-10-31 21:56:22,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:22,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:22,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:23,095 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-31 21:56:23,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:23,110 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 21:56:23,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:23,114 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-31 21:56:23,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:23,154 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-31 21:56:23,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:23,158 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-31 21:56:23,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:23,164 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-31 21:56:23,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:23,179 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-31 21:56:23,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:23,194 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-31 21:56:23,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:23,199 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-31 21:56:23,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:23,203 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-10-31 21:56:23,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:23,206 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-31 21:56:23,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:23,210 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 21:56:23,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:23,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705573953] [2024-10-31 21:56:23,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705573953] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:56:23,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556691924] [2024-10-31 21:56:23,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:23,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:56:23,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12bc7ad-b7bc-4250-948e-814086044b7c/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:56:23,215 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12bc7ad-b7bc-4250-948e-814086044b7c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:56:23,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12bc7ad-b7bc-4250-948e-814086044b7c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 21:56:23,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:23,551 INFO L255 TraceCheckSpWp]: Trace formula consists of 945 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 21:56:23,555 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:56:23,589 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 21:56:23,592 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 21:56:23,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556691924] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:56:23,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 21:56:23,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2024-10-31 21:56:23,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964685259] [2024-10-31 21:56:23,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:56:23,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 21:56:23,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:23,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 21:56:23,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-10-31 21:56:23,597 INFO L87 Difference]: Start difference. First operand 317 states and 475 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-10-31 21:56:23,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:56:23,648 INFO L93 Difference]: Finished difference Result 669 states and 1017 transitions. [2024-10-31 21:56:23,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 21:56:23,649 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 99 [2024-10-31 21:56:23,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:56:23,654 INFO L225 Difference]: With dead ends: 669 [2024-10-31 21:56:23,655 INFO L226 Difference]: Without dead ends: 379 [2024-10-31 21:56:23,657 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-10-31 21:56:23,659 INFO L432 NwaCegarLoop]: 485 mSDtfsCounter, 115 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 910 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 21:56:23,660 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 910 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 21:56:23,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2024-10-31 21:56:23,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 371. [2024-10-31 21:56:23,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 291 states have (on average 1.5326460481099657) internal successors, (446), 294 states have internal predecessors, (446), 61 states have call successors, (61), 18 states have call predecessors, (61), 18 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-10-31 21:56:23,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 567 transitions. [2024-10-31 21:56:23,695 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 567 transitions. Word has length 99 [2024-10-31 21:56:23,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:56:23,696 INFO L471 AbstractCegarLoop]: Abstraction has 371 states and 567 transitions. [2024-10-31 21:56:23,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-10-31 21:56:23,696 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 567 transitions. [2024-10-31 21:56:23,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-10-31 21:56:23,700 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:56:23,702 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] [2024-10-31 21:56:23,727 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12bc7ad-b7bc-4250-948e-814086044b7c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-31 21:56:23,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12bc7ad-b7bc-4250-948e-814086044b7c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:56:23,904 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:56:23,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:23,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1983768480, now seen corresponding path program 1 times [2024-10-31 21:56:23,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:23,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629883881] [2024-10-31 21:56:23,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:23,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:23,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:24,097 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-31 21:56:24,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:24,111 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 21:56:24,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:24,116 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-31 21:56:24,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:24,142 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-31 21:56:24,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:24,146 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-31 21:56:24,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:24,149 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-31 21:56:24,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:24,164 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-31 21:56:24,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:24,181 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-31 21:56:24,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:24,183 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-10-31 21:56:24,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:24,187 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-31 21:56:24,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:24,191 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-31 21:56:24,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:24,193 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 21:56:24,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:24,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629883881] [2024-10-31 21:56:24,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629883881] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:56:24,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709541102] [2024-10-31 21:56:24,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:24,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:56:24,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12bc7ad-b7bc-4250-948e-814086044b7c/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:56:24,198 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12bc7ad-b7bc-4250-948e-814086044b7c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:56:24,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12bc7ad-b7bc-4250-948e-814086044b7c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-31 21:56:24,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:24,514 INFO L255 TraceCheckSpWp]: Trace formula consists of 950 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-31 21:56:24,518 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:56:24,598 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 21:56:24,598 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 21:56:24,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709541102] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:56:24,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 21:56:24,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2024-10-31 21:56:24,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92160283] [2024-10-31 21:56:24,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:56:24,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 21:56:24,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:24,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 21:56:24,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-10-31 21:56:24,604 INFO L87 Difference]: Start difference. First operand 371 states and 567 transitions. Second operand has 5 states, 4 states have (on average 17.25) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2024-10-31 21:56:24,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:56:24,691 INFO L93 Difference]: Finished difference Result 733 states and 1124 transitions. [2024-10-31 21:56:24,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 21:56:24,692 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.25) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 100 [2024-10-31 21:56:24,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:56:24,697 INFO L225 Difference]: With dead ends: 733 [2024-10-31 21:56:24,697 INFO L226 Difference]: Without dead ends: 373 [2024-10-31 21:56:24,700 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-10-31 21:56:24,701 INFO L432 NwaCegarLoop]: 465 mSDtfsCounter, 2 mSDsluCounter, 1384 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1849 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 21:56:24,701 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1849 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 21:56:24,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2024-10-31 21:56:24,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 373. [2024-10-31 21:56:24,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 292 states have (on average 1.5308219178082192) internal successors, (447), 296 states have internal predecessors, (447), 61 states have call successors, (61), 18 states have call predecessors, (61), 19 states have return successors, (62), 60 states have call predecessors, (62), 60 states have call successors, (62) [2024-10-31 21:56:24,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 570 transitions. [2024-10-31 21:56:24,748 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 570 transitions. Word has length 100 [2024-10-31 21:56:24,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:56:24,749 INFO L471 AbstractCegarLoop]: Abstraction has 373 states and 570 transitions. [2024-10-31 21:56:24,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.25) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2024-10-31 21:56:24,749 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 570 transitions. [2024-10-31 21:56:24,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-10-31 21:56:24,753 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:56:24,753 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] [2024-10-31 21:56:24,776 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12bc7ad-b7bc-4250-948e-814086044b7c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-31 21:56:24,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12bc7ad-b7bc-4250-948e-814086044b7c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:56:24,954 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:56:24,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:24,955 INFO L85 PathProgramCache]: Analyzing trace with hash 2002113072, now seen corresponding path program 1 times [2024-10-31 21:56:24,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:24,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847115457] [2024-10-31 21:56:24,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:24,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:24,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:25,128 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-31 21:56:25,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:25,145 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 21:56:25,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:25,149 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-31 21:56:25,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:25,181 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-31 21:56:25,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:25,214 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-31 21:56:25,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:25,221 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-31 21:56:25,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:25,239 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-31 21:56:25,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:25,259 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-31 21:56:25,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:25,262 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-31 21:56:25,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:25,269 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-31 21:56:25,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:25,272 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-10-31 21:56:25,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:25,278 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 21:56:25,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:25,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847115457] [2024-10-31 21:56:25,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847115457] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:56:25,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357386444] [2024-10-31 21:56:25,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:25,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:56:25,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12bc7ad-b7bc-4250-948e-814086044b7c/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:56:25,283 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12bc7ad-b7bc-4250-948e-814086044b7c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:56:25,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12bc7ad-b7bc-4250-948e-814086044b7c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-31 21:56:25,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:25,612 INFO L255 TraceCheckSpWp]: Trace formula consists of 951 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 21:56:25,615 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:56:25,686 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 21:56:25,687 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 21:56:25,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357386444] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:56:25,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 21:56:25,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2024-10-31 21:56:25,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149749480] [2024-10-31 21:56:25,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:56:25,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 21:56:25,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:25,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 21:56:25,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2024-10-31 21:56:25,689 INFO L87 Difference]: Start difference. First operand 373 states and 570 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-10-31 21:56:25,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:56:25,770 INFO L93 Difference]: Finished difference Result 735 states and 1129 transitions. [2024-10-31 21:56:25,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 21:56:25,771 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 101 [2024-10-31 21:56:25,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:56:25,774 INFO L225 Difference]: With dead ends: 735 [2024-10-31 21:56:25,774 INFO L226 Difference]: Without dead ends: 375 [2024-10-31 21:56:25,776 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2024-10-31 21:56:25,777 INFO L432 NwaCegarLoop]: 463 mSDtfsCounter, 2 mSDsluCounter, 1372 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1835 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 21:56:25,777 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1835 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 21:56:25,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2024-10-31 21:56:25,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 375. [2024-10-31 21:56:25,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 293 states have (on average 1.52901023890785) internal successors, (448), 298 states have internal predecessors, (448), 61 states have call successors, (61), 18 states have call predecessors, (61), 20 states have return successors, (67), 60 states have call predecessors, (67), 60 states have call successors, (67) [2024-10-31 21:56:25,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 576 transitions. [2024-10-31 21:56:25,796 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 576 transitions. Word has length 101 [2024-10-31 21:56:25,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:56:25,797 INFO L471 AbstractCegarLoop]: Abstraction has 375 states and 576 transitions. [2024-10-31 21:56:25,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-10-31 21:56:25,797 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 576 transitions. [2024-10-31 21:56:25,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-10-31 21:56:25,800 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:56:25,800 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] [2024-10-31 21:56:25,823 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12bc7ad-b7bc-4250-948e-814086044b7c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-31 21:56:26,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12bc7ad-b7bc-4250-948e-814086044b7c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:56:26,001 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:56:26,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:26,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1617125696, now seen corresponding path program 1 times [2024-10-31 21:56:26,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:26,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871378952] [2024-10-31 21:56:26,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:26,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:26,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:26,174 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-31 21:56:26,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:26,186 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 21:56:26,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:26,190 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-31 21:56:26,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:26,193 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-31 21:56:26,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:26,197 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-31 21:56:26,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:26,222 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-31 21:56:26,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:26,235 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-31 21:56:26,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:26,249 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-31 21:56:26,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:26,252 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-31 21:56:26,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:26,255 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-10-31 21:56:26,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:26,257 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-10-31 21:56:26,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:26,261 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 21:56:26,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:26,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871378952] [2024-10-31 21:56:26,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871378952] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:56:26,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:56:26,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-31 21:56:26,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109262370] [2024-10-31 21:56:26,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:56:26,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-31 21:56:26,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:26,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-31 21:56:26,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-31 21:56:26,264 INFO L87 Difference]: Start difference. First operand 375 states and 576 transitions. Second operand has 9 states, 8 states have (on average 8.375) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2024-10-31 21:56:29,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:56:29,155 INFO L93 Difference]: Finished difference Result 901 states and 1392 transitions. [2024-10-31 21:56:29,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-31 21:56:29,156 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.375) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 102 [2024-10-31 21:56:29,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:56:29,163 INFO L225 Difference]: With dead ends: 901 [2024-10-31 21:56:29,163 INFO L226 Difference]: Without dead ends: 549 [2024-10-31 21:56:29,165 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2024-10-31 21:56:29,167 INFO L432 NwaCegarLoop]: 187 mSDtfsCounter, 1004 mSDsluCounter, 985 mSDsCounter, 0 mSdLazyCounter, 2530 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1005 SdHoareTripleChecker+Valid, 1172 SdHoareTripleChecker+Invalid, 2848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 2530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-10-31 21:56:29,168 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1005 Valid, 1172 Invalid, 2848 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [318 Valid, 2530 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-10-31 21:56:29,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2024-10-31 21:56:29,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 375. [2024-10-31 21:56:29,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 293 states have (on average 1.52901023890785) internal successors, (448), 298 states have internal predecessors, (448), 61 states have call successors, (61), 18 states have call predecessors, (61), 20 states have return successors, (66), 60 states have call predecessors, (66), 60 states have call successors, (66) [2024-10-31 21:56:29,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 575 transitions. [2024-10-31 21:56:29,226 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 575 transitions. Word has length 102 [2024-10-31 21:56:29,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:56:29,226 INFO L471 AbstractCegarLoop]: Abstraction has 375 states and 575 transitions. [2024-10-31 21:56:29,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.375) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2024-10-31 21:56:29,227 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 575 transitions. [2024-10-31 21:56:29,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-10-31 21:56:29,229 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:56:29,229 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] [2024-10-31 21:56:29,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 21:56:29,230 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:56:29,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:29,230 INFO L85 PathProgramCache]: Analyzing trace with hash 970357938, now seen corresponding path program 2 times [2024-10-31 21:56:29,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:29,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021856350] [2024-10-31 21:56:29,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:29,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:29,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:29,376 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-31 21:56:29,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:29,388 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 21:56:29,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:29,392 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-31 21:56:29,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:29,396 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-31 21:56:29,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:29,399 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-31 21:56:29,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:29,440 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-31 21:56:29,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:29,453 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-31 21:56:29,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:29,466 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-31 21:56:29,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:29,468 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-31 21:56:29,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:29,471 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-10-31 21:56:29,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:29,473 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-10-31 21:56:29,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:29,476 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 21:56:29,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:29,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021856350] [2024-10-31 21:56:29,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021856350] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:56:29,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:56:29,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-31 21:56:29,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70201388] [2024-10-31 21:56:29,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:56:29,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-31 21:56:29,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:29,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-31 21:56:29,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-31 21:56:29,479 INFO L87 Difference]: Start difference. First operand 375 states and 575 transitions. Second operand has 9 states, 8 states have (on average 8.5) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2024-10-31 21:56:32,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:56:32,082 INFO L93 Difference]: Finished difference Result 903 states and 1395 transitions. [2024-10-31 21:56:32,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-31 21:56:32,083 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.5) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 103 [2024-10-31 21:56:32,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:56:32,087 INFO L225 Difference]: With dead ends: 903 [2024-10-31 21:56:32,087 INFO L226 Difference]: Without dead ends: 551 [2024-10-31 21:56:32,089 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2024-10-31 21:56:32,090 INFO L432 NwaCegarLoop]: 186 mSDtfsCounter, 1000 mSDsluCounter, 985 mSDsCounter, 0 mSdLazyCounter, 2531 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1002 SdHoareTripleChecker+Valid, 1171 SdHoareTripleChecker+Invalid, 2849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 2531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-31 21:56:32,090 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1002 Valid, 1171 Invalid, 2849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 2531 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-31 21:56:32,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2024-10-31 21:56:32,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 377. [2024-10-31 21:56:32,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 294 states have (on average 1.5272108843537415) internal successors, (449), 300 states have internal predecessors, (449), 61 states have call successors, (61), 18 states have call predecessors, (61), 21 states have return successors, (68), 60 states have call predecessors, (68), 60 states have call successors, (68) [2024-10-31 21:56:32,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 578 transitions. [2024-10-31 21:56:32,128 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 578 transitions. Word has length 103 [2024-10-31 21:56:32,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:56:32,129 INFO L471 AbstractCegarLoop]: Abstraction has 377 states and 578 transitions. [2024-10-31 21:56:32,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.5) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2024-10-31 21:56:32,129 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 578 transitions. [2024-10-31 21:56:32,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-10-31 21:56:32,131 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:56:32,131 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] [2024-10-31 21:56:32,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 21:56:32,132 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:56:32,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:32,132 INFO L85 PathProgramCache]: Analyzing trace with hash 769278873, now seen corresponding path program 1 times [2024-10-31 21:56:32,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:32,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204376980] [2024-10-31 21:56:32,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:32,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:32,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:32,265 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-31 21:56:32,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:32,278 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 21:56:32,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:32,282 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-31 21:56:32,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:32,285 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-31 21:56:32,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:32,289 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-31 21:56:32,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:32,311 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-31 21:56:32,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:32,324 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-31 21:56:32,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:32,338 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-31 21:56:32,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:32,341 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-10-31 21:56:32,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:32,343 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-31 21:56:32,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:32,346 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-10-31 21:56:32,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:32,348 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 21:56:32,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:32,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204376980] [2024-10-31 21:56:32,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204376980] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:56:32,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:56:32,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-31 21:56:32,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855778048] [2024-10-31 21:56:32,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:56:32,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-31 21:56:32,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:32,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-31 21:56:32,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-31 21:56:32,351 INFO L87 Difference]: Start difference. First operand 377 states and 578 transitions. Second operand has 9 states, 8 states have (on average 8.625) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2024-10-31 21:56:35,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:56:35,078 INFO L93 Difference]: Finished difference Result 903 states and 1394 transitions. [2024-10-31 21:56:35,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-31 21:56:35,079 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.625) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 104 [2024-10-31 21:56:35,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:56:35,083 INFO L225 Difference]: With dead ends: 903 [2024-10-31 21:56:35,084 INFO L226 Difference]: Without dead ends: 551 [2024-10-31 21:56:35,085 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2024-10-31 21:56:35,086 INFO L432 NwaCegarLoop]: 183 mSDtfsCounter, 1002 mSDsluCounter, 985 mSDsCounter, 0 mSdLazyCounter, 2525 mSolverCounterSat, 319 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1003 SdHoareTripleChecker+Valid, 1168 SdHoareTripleChecker+Invalid, 2844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 319 IncrementalHoareTripleChecker+Valid, 2525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-31 21:56:35,086 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1003 Valid, 1168 Invalid, 2844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [319 Valid, 2525 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-31 21:56:35,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2024-10-31 21:56:35,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 377. [2024-10-31 21:56:35,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 294 states have (on average 1.5272108843537415) internal successors, (449), 300 states have internal predecessors, (449), 61 states have call successors, (61), 18 states have call predecessors, (61), 21 states have return successors, (68), 60 states have call predecessors, (68), 60 states have call successors, (68) [2024-10-31 21:56:35,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 578 transitions. [2024-10-31 21:56:35,126 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 578 transitions. Word has length 104 [2024-10-31 21:56:35,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:56:35,127 INFO L471 AbstractCegarLoop]: Abstraction has 377 states and 578 transitions. [2024-10-31 21:56:35,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.625) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2024-10-31 21:56:35,127 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 578 transitions. [2024-10-31 21:56:35,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-10-31 21:56:35,129 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:56:35,129 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] [2024-10-31 21:56:35,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 21:56:35,130 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:56:35,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:35,130 INFO L85 PathProgramCache]: Analyzing trace with hash -184661285, now seen corresponding path program 1 times [2024-10-31 21:56:35,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:35,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219312161] [2024-10-31 21:56:35,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:35,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:35,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:35,288 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-31 21:56:35,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:35,301 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 21:56:35,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:35,304 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-31 21:56:35,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:35,308 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-31 21:56:35,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:35,311 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-31 21:56:35,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:35,345 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-31 21:56:35,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:35,391 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-31 21:56:35,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:35,409 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-31 21:56:35,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:35,411 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-10-31 21:56:35,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:35,414 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-31 21:56:35,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:35,417 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-10-31 21:56:35,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:35,420 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 21:56:35,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:35,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219312161] [2024-10-31 21:56:35,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219312161] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:56:35,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:56:35,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-10-31 21:56:35,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346377536] [2024-10-31 21:56:35,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:56:35,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-31 21:56:35,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:35,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-31 21:56:35,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-10-31 21:56:35,422 INFO L87 Difference]: Start difference. First operand 377 states and 578 transitions. Second operand has 12 states, 11 states have (on average 6.545454545454546) internal successors, (72), 8 states have internal predecessors, (72), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2024-10-31 21:56:38,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:56:38,798 INFO L93 Difference]: Finished difference Result 901 states and 1389 transitions. [2024-10-31 21:56:38,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-31 21:56:38,798 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.545454545454546) internal successors, (72), 8 states have internal predecessors, (72), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 104 [2024-10-31 21:56:38,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:56:38,803 INFO L225 Difference]: With dead ends: 901 [2024-10-31 21:56:38,803 INFO L226 Difference]: Without dead ends: 551 [2024-10-31 21:56:38,805 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2024-10-31 21:56:38,806 INFO L432 NwaCegarLoop]: 184 mSDtfsCounter, 1004 mSDsluCounter, 1438 mSDsCounter, 0 mSdLazyCounter, 4182 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1005 SdHoareTripleChecker+Valid, 1622 SdHoareTripleChecker+Invalid, 4503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 4182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-10-31 21:56:38,806 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1005 Valid, 1622 Invalid, 4503 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [321 Valid, 4182 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-10-31 21:56:38,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2024-10-31 21:56:38,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 377. [2024-10-31 21:56:38,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 294 states have (on average 1.5272108843537415) internal successors, (449), 300 states have internal predecessors, (449), 61 states have call successors, (61), 18 states have call predecessors, (61), 21 states have return successors, (67), 60 states have call predecessors, (67), 60 states have call successors, (67) [2024-10-31 21:56:38,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 577 transitions. [2024-10-31 21:56:38,847 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 577 transitions. Word has length 104 [2024-10-31 21:56:38,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:56:38,847 INFO L471 AbstractCegarLoop]: Abstraction has 377 states and 577 transitions. [2024-10-31 21:56:38,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.545454545454546) internal successors, (72), 8 states have internal predecessors, (72), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2024-10-31 21:56:38,848 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 577 transitions. [2024-10-31 21:56:38,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-10-31 21:56:38,850 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:56:38,850 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] [2024-10-31 21:56:38,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-31 21:56:38,850 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:56:38,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:38,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1450940197, now seen corresponding path program 2 times [2024-10-31 21:56:38,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:38,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030523384] [2024-10-31 21:56:38,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:38,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:38,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:39,072 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-31 21:56:39,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:39,086 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 21:56:39,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:39,091 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-31 21:56:39,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:39,096 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-31 21:56:39,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:39,100 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-31 21:56:39,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:39,133 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-31 21:56:39,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:39,181 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-31 21:56:39,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:39,199 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-31 21:56:39,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:39,202 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-31 21:56:39,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:39,204 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-10-31 21:56:39,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:39,209 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-10-31 21:56:39,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:39,215 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 21:56:39,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:39,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030523384] [2024-10-31 21:56:39,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030523384] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:56:39,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:56:39,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-10-31 21:56:39,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022934326] [2024-10-31 21:56:39,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:56:39,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-31 21:56:39,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:39,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-31 21:56:39,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-10-31 21:56:39,218 INFO L87 Difference]: Start difference. First operand 377 states and 577 transitions. Second operand has 12 states, 11 states have (on average 6.636363636363637) internal successors, (73), 8 states have internal predecessors, (73), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2024-10-31 21:56:42,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:56:42,455 INFO L93 Difference]: Finished difference Result 903 states and 1395 transitions. [2024-10-31 21:56:42,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-31 21:56:42,456 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.636363636363637) internal successors, (73), 8 states have internal predecessors, (73), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 105 [2024-10-31 21:56:42,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:56:42,460 INFO L225 Difference]: With dead ends: 903 [2024-10-31 21:56:42,461 INFO L226 Difference]: Without dead ends: 553 [2024-10-31 21:56:42,463 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2024-10-31 21:56:42,463 INFO L432 NwaCegarLoop]: 185 mSDtfsCounter, 1000 mSDsluCounter, 1438 mSDsCounter, 0 mSdLazyCounter, 4218 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1001 SdHoareTripleChecker+Valid, 1623 SdHoareTripleChecker+Invalid, 4536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 4218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-10-31 21:56:42,464 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1001 Valid, 1623 Invalid, 4536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 4218 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-10-31 21:56:42,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2024-10-31 21:56:42,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 379. [2024-10-31 21:56:42,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 295 states have (on average 1.5254237288135593) internal successors, (450), 302 states have internal predecessors, (450), 61 states have call successors, (61), 18 states have call predecessors, (61), 22 states have return successors, (72), 60 states have call predecessors, (72), 60 states have call successors, (72) [2024-10-31 21:56:42,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 583 transitions. [2024-10-31 21:56:42,505 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 583 transitions. Word has length 105 [2024-10-31 21:56:42,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:56:42,505 INFO L471 AbstractCegarLoop]: Abstraction has 379 states and 583 transitions. [2024-10-31 21:56:42,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.636363636363637) internal successors, (73), 8 states have internal predecessors, (73), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2024-10-31 21:56:42,506 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 583 transitions. [2024-10-31 21:56:42,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-10-31 21:56:42,508 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:56:42,508 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] [2024-10-31 21:56:42,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-31 21:56:42,509 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:56:42,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:42,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1794783478, now seen corresponding path program 1 times [2024-10-31 21:56:42,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:42,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101499946] [2024-10-31 21:56:42,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:42,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:42,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:42,691 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-31 21:56:42,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:42,707 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 21:56:42,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:42,710 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-31 21:56:42,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:42,739 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-31 21:56:42,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:42,743 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-31 21:56:42,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:42,748 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-31 21:56:42,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:42,765 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-31 21:56:42,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:42,780 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-31 21:56:42,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:42,783 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-31 21:56:42,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:42,786 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-31 21:56:42,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:42,788 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-31 21:56:42,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:42,791 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-10-31 21:56:42,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:42,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101499946] [2024-10-31 21:56:42,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101499946] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:56:42,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536789313] [2024-10-31 21:56:42,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:42,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:56:42,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12bc7ad-b7bc-4250-948e-814086044b7c/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:56:42,794 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12bc7ad-b7bc-4250-948e-814086044b7c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:56:42,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e12bc7ad-b7bc-4250-948e-814086044b7c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-31 21:56:43,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:43,096 INFO L255 TraceCheckSpWp]: Trace formula consists of 956 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 21:56:43,099 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:56:43,150 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 21:56:43,153 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:56:43,269 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 21:56:43,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536789313] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 21:56:43,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 21:56:43,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2024-10-31 21:56:43,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001624377] [2024-10-31 21:56:43,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 21:56:43,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-31 21:56:43,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:43,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-31 21:56:43,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2024-10-31 21:56:43,274 INFO L87 Difference]: Start difference. First operand 379 states and 583 transitions. Second operand has 15 states, 14 states have (on average 8.571428571428571) internal successors, (120), 11 states have internal predecessors, (120), 4 states have call successors, (27), 6 states have call predecessors, (27), 3 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20)