./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec7_product31.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/email_spec7_product31.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 77705a63487ad2667abe7e61d03fbac9d343255168bc183f3ebec6cdcc7d3824 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 14:14:24,583 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 14:14:24,662 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 14:14:24,667 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 14:14:24,668 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 14:14:24,696 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 14:14:24,697 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 14:14:24,697 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 14:14:24,698 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 14:14:24,702 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 14:14:24,702 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 14:14:24,703 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 14:14:24,703 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 14:14:24,704 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 14:14:24,704 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 14:14:24,704 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 14:14:24,706 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 14:14:24,706 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 14:14:24,706 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 14:14:24,706 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 14:14:24,707 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 14:14:24,707 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 14:14:24,707 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 14:14:24,708 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 14:14:24,708 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 14:14:24,708 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 14:14:24,708 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 14:14:24,709 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 14:14:24,709 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 14:14:24,709 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 14:14:24,709 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 14:14:24,710 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 14:14:24,710 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:14:24,710 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 14:14:24,710 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 14:14:24,710 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 14:14:24,711 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 14:14:24,711 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 14:14:24,711 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 14:14:24,711 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 14:14:24,712 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 14:14:24,712 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 14:14:24,713 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77705a63487ad2667abe7e61d03fbac9d343255168bc183f3ebec6cdcc7d3824 [2024-11-18 14:14:25,000 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 14:14:25,028 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 14:14:25,032 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 14:14:25,034 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 14:14:25,034 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 14:14:25,035 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec7_product31.cil.c [2024-11-18 14:14:26,439 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 14:14:26,722 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 14:14:26,726 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec7_product31.cil.c [2024-11-18 14:14:26,754 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e83404d0/c409dc484de344cc8eb630665319ad83/FLAGc3ad42509 [2024-11-18 14:14:26,767 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e83404d0/c409dc484de344cc8eb630665319ad83 [2024-11-18 14:14:26,769 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 14:14:26,770 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 14:14:26,771 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 14:14:26,771 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 14:14:26,776 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 14:14:26,777 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:14:26" (1/1) ... [2024-11-18 14:14:26,778 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15da4ce4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:14:26, skipping insertion in model container [2024-11-18 14:14:26,778 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:14:26" (1/1) ... [2024-11-18 14:14:26,845 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 14:14:27,114 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec7_product31.cil.c[7290,7303] [2024-11-18 14:14:27,387 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:14:27,406 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 14:14:27,419 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [48] [2024-11-18 14:14:27,421 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EncryptVerify_spec.i","") [363] [2024-11-18 14:14:27,421 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [383] [2024-11-18 14:14:27,421 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [392] [2024-11-18 14:14:27,421 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [764] [2024-11-18 14:14:27,422 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1163] [2024-11-18 14:14:27,422 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [1529] [2024-11-18 14:14:27,422 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [1664] [2024-11-18 14:14:27,422 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1681] [2024-11-18 14:14:27,423 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [1716] [2024-11-18 14:14:27,423 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2783] [2024-11-18 14:14:27,442 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec7_product31.cil.c[7290,7303] [2024-11-18 14:14:27,563 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:14:27,601 INFO L204 MainTranslator]: Completed translation [2024-11-18 14:14:27,602 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:14:27 WrapperNode [2024-11-18 14:14:27,602 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 14:14:27,603 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 14:14:27,603 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 14:14:27,603 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 14:14:27,608 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:14:27" (1/1) ... [2024-11-18 14:14:27,631 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:14:27" (1/1) ... [2024-11-18 14:14:27,691 INFO L138 Inliner]: procedures = 131, calls = 203, calls flagged for inlining = 61, calls inlined = 56, statements flattened = 1018 [2024-11-18 14:14:27,695 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 14:14:27,696 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 14:14:27,696 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 14:14:27,697 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 14:14:27,710 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:14:27" (1/1) ... [2024-11-18 14:14:27,710 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:14:27" (1/1) ... [2024-11-18 14:14:27,716 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:14:27" (1/1) ... [2024-11-18 14:14:27,743 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]. [2024-11-18 14:14:27,743 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:14:27" (1/1) ... [2024-11-18 14:14:27,743 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:14:27" (1/1) ... [2024-11-18 14:14:27,760 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:14:27" (1/1) ... [2024-11-18 14:14:27,768 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:14:27" (1/1) ... [2024-11-18 14:14:27,773 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:14:27" (1/1) ... [2024-11-18 14:14:27,778 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:14:27" (1/1) ... [2024-11-18 14:14:27,790 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 14:14:27,791 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 14:14:27,791 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 14:14:27,792 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 14:14:27,796 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:14:27" (1/1) ... [2024-11-18 14:14:27,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:14:27,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:14:27,866 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 14:14:27,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 14:14:28,007 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2024-11-18 14:14:28,008 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2024-11-18 14:14:28,008 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2024-11-18 14:14:28,009 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2024-11-18 14:14:28,009 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2024-11-18 14:14:28,009 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2024-11-18 14:14:28,009 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2024-11-18 14:14:28,010 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2024-11-18 14:14:28,010 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2024-11-18 14:14:28,013 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2024-11-18 14:14:28,014 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2024-11-18 14:14:28,014 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2024-11-18 14:14:28,014 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2024-11-18 14:14:28,014 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2024-11-18 14:14:28,014 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2024-11-18 14:14:28,014 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2024-11-18 14:14:28,014 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2024-11-18 14:14:28,014 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2024-11-18 14:14:28,014 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2024-11-18 14:14:28,014 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2024-11-18 14:14:28,015 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2024-11-18 14:14:28,015 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2024-11-18 14:14:28,015 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2024-11-18 14:14:28,015 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2024-11-18 14:14:28,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 14:14:28,015 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2024-11-18 14:14:28,015 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2024-11-18 14:14:28,015 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2024-11-18 14:14:28,015 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2024-11-18 14:14:28,015 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2024-11-18 14:14:28,015 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2024-11-18 14:14:28,015 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2024-11-18 14:14:28,016 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2024-11-18 14:14:28,016 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2024-11-18 14:14:28,016 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2024-11-18 14:14:28,016 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2024-11-18 14:14:28,016 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2024-11-18 14:14:28,016 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2024-11-18 14:14:28,016 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2024-11-18 14:14:28,016 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2024-11-18 14:14:28,016 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2024-11-18 14:14:28,016 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2024-11-18 14:14:28,016 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2024-11-18 14:14:28,016 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2024-11-18 14:14:28,016 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2024-11-18 14:14:28,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 14:14:28,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 14:14:28,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-18 14:14:28,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-18 14:14:28,017 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2024-11-18 14:14:28,017 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2024-11-18 14:14:28,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 14:14:28,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 14:14:28,288 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 14:14:28,291 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 14:14:29,149 INFO L? ?]: Removed 473 outVars from TransFormulas that were not future-live. [2024-11-18 14:14:29,149 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 14:14:29,181 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 14:14:29,182 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 14:14:29,182 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:14:29 BoogieIcfgContainer [2024-11-18 14:14:29,182 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 14:14:29,189 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 14:14:29,189 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 14:14:29,191 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 14:14:29,192 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 02:14:26" (1/3) ... [2024-11-18 14:14:29,192 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62006bcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:14:29, skipping insertion in model container [2024-11-18 14:14:29,192 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:14:27" (2/3) ... [2024-11-18 14:14:29,193 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62006bcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:14:29, skipping insertion in model container [2024-11-18 14:14:29,193 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:14:29" (3/3) ... [2024-11-18 14:14:29,194 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec7_product31.cil.c [2024-11-18 14:14:29,210 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 14:14:29,210 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 14:14:29,333 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 14:14:29,340 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;@f256a98, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 14:14:29,344 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 14:14:29,378 INFO L276 IsEmpty]: Start isEmpty. Operand has 366 states, 283 states have (on average 1.5017667844522968) internal successors, (425), 287 states have internal predecessors, (425), 58 states have call successors, (58), 23 states have call predecessors, (58), 23 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2024-11-18 14:14:29,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-18 14:14:29,406 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:14:29,408 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:14:29,409 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:14:29,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:14:29,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1669286504, now seen corresponding path program 1 times [2024-11-18 14:14:29,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:14:29,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22777231] [2024-11-18 14:14:29,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:14:29,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:14:29,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:14:30,150 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-18 14:14:30,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:14:30,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22777231] [2024-11-18 14:14:30,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22777231] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:14:30,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033699687] [2024-11-18 14:14:30,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:14:30,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:14:30,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:14:30,159 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:14:30,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 14:14:30,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:14:30,588 INFO L255 TraceCheckSpWp]: Trace formula consists of 1084 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 14:14:30,597 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:14:30,625 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-18 14:14:30,626 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:14:30,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033699687] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:14:30,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:14:30,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 5 [2024-11-18 14:14:30,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245970546] [2024-11-18 14:14:30,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:14:30,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 14:14:30,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:14:30,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 14:14:30,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:14:30,665 INFO L87 Difference]: Start difference. First operand has 366 states, 283 states have (on average 1.5017667844522968) internal successors, (425), 287 states have internal predecessors, (425), 58 states have call successors, (58), 23 states have call predecessors, (58), 23 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) Second operand has 2 states, 2 states have (on average 32.5) internal successors, (65), 2 states have internal predecessors, (65), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:14:30,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:14:30,736 INFO L93 Difference]: Finished difference Result 578 states and 836 transitions. [2024-11-18 14:14:30,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 14:14:30,739 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.5) internal successors, (65), 2 states have internal predecessors, (65), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 120 [2024-11-18 14:14:30,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:14:30,753 INFO L225 Difference]: With dead ends: 578 [2024-11-18 14:14:30,753 INFO L226 Difference]: Without dead ends: 359 [2024-11-18 14:14:30,761 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:14:30,764 INFO L432 NwaCegarLoop]: 537 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, 537 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 [2024-11-18 14:14:30,765 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:14:30,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2024-11-18 14:14:30,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 359. [2024-11-18 14:14:30,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 277 states have (on average 1.4945848375451263) internal successors, (414), 280 states have internal predecessors, (414), 58 states have call successors, (58), 23 states have call predecessors, (58), 23 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2024-11-18 14:14:30,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 529 transitions. [2024-11-18 14:14:30,835 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 529 transitions. Word has length 120 [2024-11-18 14:14:30,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:14:30,837 INFO L471 AbstractCegarLoop]: Abstraction has 359 states and 529 transitions. [2024-11-18 14:14:30,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.5) internal successors, (65), 2 states have internal predecessors, (65), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:14:30,838 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 529 transitions. [2024-11-18 14:14:30,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-18 14:14:30,843 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:14:30,843 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:14:30,864 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 14:14:31,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-18 14:14:31,048 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:14:31,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:14:31,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1463241793, now seen corresponding path program 1 times [2024-11-18 14:14:31,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:14:31,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327082015] [2024-11-18 14:14:31,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:14:31,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:14:31,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:14:31,359 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-18 14:14:31,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:14:31,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327082015] [2024-11-18 14:14:31,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327082015] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:14:31,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252978824] [2024-11-18 14:14:31,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:14:31,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:14:31,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:14:31,368 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:14:31,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 14:14:31,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:14:31,772 INFO L255 TraceCheckSpWp]: Trace formula consists of 1085 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 14:14:31,780 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:14:31,824 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-18 14:14:31,824 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:14:31,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252978824] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:14:31,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:14:31,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 14:14:31,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453979522] [2024-11-18 14:14:31,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:14:31,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:14:31,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:14:31,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:14:31,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:14:31,830 INFO L87 Difference]: Start difference. First operand 359 states and 529 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:14:31,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:14:31,875 INFO L93 Difference]: Finished difference Result 568 states and 817 transitions. [2024-11-18 14:14:31,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:14:31,876 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 121 [2024-11-18 14:14:31,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:14:31,880 INFO L225 Difference]: With dead ends: 568 [2024-11-18 14:14:31,880 INFO L226 Difference]: Without dead ends: 362 [2024-11-18 14:14:31,881 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:14:31,882 INFO L432 NwaCegarLoop]: 527 mSDtfsCounter, 1 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1052 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 [2024-11-18 14:14:31,883 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1052 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:14:31,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2024-11-18 14:14:31,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 361. [2024-11-18 14:14:31,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 279 states have (on average 1.4910394265232976) internal successors, (416), 282 states have internal predecessors, (416), 58 states have call successors, (58), 23 states have call predecessors, (58), 23 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2024-11-18 14:14:31,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 531 transitions. [2024-11-18 14:14:31,918 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 531 transitions. Word has length 121 [2024-11-18 14:14:31,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:14:31,918 INFO L471 AbstractCegarLoop]: Abstraction has 361 states and 531 transitions. [2024-11-18 14:14:31,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:14:31,919 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 531 transitions. [2024-11-18 14:14:31,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-18 14:14:31,921 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:14:31,921 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:14:31,935 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 14:14:32,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-18 14:14:32,123 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:14:32,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:14:32,123 INFO L85 PathProgramCache]: Analyzing trace with hash 473633432, now seen corresponding path program 1 times [2024-11-18 14:14:32,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:14:32,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889994934] [2024-11-18 14:14:32,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:14:32,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:14:32,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:14:32,355 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-18 14:14:32,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:14:32,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889994934] [2024-11-18 14:14:32,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889994934] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:14:32,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829605726] [2024-11-18 14:14:32,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:14:32,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:14:32,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:14:32,359 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:14:32,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 14:14:32,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:14:32,707 INFO L255 TraceCheckSpWp]: Trace formula consists of 1097 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:14:32,711 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:14:32,732 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-18 14:14:32,733 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:14:32,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829605726] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:14:32,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:14:32,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 14:14:32,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378499612] [2024-11-18 14:14:32,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:14:32,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:14:32,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:14:32,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:14:32,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:14:32,736 INFO L87 Difference]: Start difference. First operand 361 states and 531 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:14:32,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:14:32,767 INFO L93 Difference]: Finished difference Result 752 states and 1121 transitions. [2024-11-18 14:14:32,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:14:32,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 127 [2024-11-18 14:14:32,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:14:32,772 INFO L225 Difference]: With dead ends: 752 [2024-11-18 14:14:32,772 INFO L226 Difference]: Without dead ends: 418 [2024-11-18 14:14:32,774 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:14:32,775 INFO L432 NwaCegarLoop]: 553 mSDtfsCounter, 107 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 1037 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 [2024-11-18 14:14:32,775 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 1037 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:14:32,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2024-11-18 14:14:32,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 410. [2024-11-18 14:14:32,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 317 states have (on average 1.5078864353312302) internal successors, (478), 320 states have internal predecessors, (478), 69 states have call successors, (69), 23 states have call predecessors, (69), 23 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-18 14:14:32,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 615 transitions. [2024-11-18 14:14:32,804 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 615 transitions. Word has length 127 [2024-11-18 14:14:32,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:14:32,806 INFO L471 AbstractCegarLoop]: Abstraction has 410 states and 615 transitions. [2024-11-18 14:14:32,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:14:32,806 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 615 transitions. [2024-11-18 14:14:32,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-18 14:14:32,810 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:14:32,810 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:14:32,827 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 14:14:33,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:14:33,011 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:14:33,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:14:33,012 INFO L85 PathProgramCache]: Analyzing trace with hash -179272271, now seen corresponding path program 1 times [2024-11-18 14:14:33,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:14:33,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958270002] [2024-11-18 14:14:33,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:14:33,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:14:33,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:14:33,188 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-18 14:14:33,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:14:33,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958270002] [2024-11-18 14:14:33,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958270002] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:14:33,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228212628] [2024-11-18 14:14:33,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:14:33,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:14:33,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:14:33,191 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:14:33,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 14:14:33,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:14:33,494 INFO L255 TraceCheckSpWp]: Trace formula consists of 1102 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 14:14:33,500 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:14:33,567 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-18 14:14:33,569 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:14:33,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228212628] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:14:33,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:14:33,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-18 14:14:33,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227828260] [2024-11-18 14:14:33,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:14:33,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:14:33,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:14:33,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:14:33,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:14:33,576 INFO L87 Difference]: Start difference. First operand 410 states and 615 transitions. Second operand has 5 states, 4 states have (on average 20.25) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-18 14:14:33,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:14:33,654 INFO L93 Difference]: Finished difference Result 811 states and 1220 transitions. [2024-11-18 14:14:33,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:14:33,657 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 20.25) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 128 [2024-11-18 14:14:33,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:14:33,661 INFO L225 Difference]: With dead ends: 811 [2024-11-18 14:14:33,661 INFO L226 Difference]: Without dead ends: 412 [2024-11-18 14:14:33,662 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:14:33,663 INFO L432 NwaCegarLoop]: 521 mSDtfsCounter, 2 mSDsluCounter, 1552 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2073 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 [2024-11-18 14:14:33,664 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2073 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:14:33,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2024-11-18 14:14:33,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2024-11-18 14:14:33,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 318 states have (on average 1.5062893081761006) internal successors, (479), 322 states have internal predecessors, (479), 69 states have call successors, (69), 23 states have call predecessors, (69), 24 states have return successors, (70), 68 states have call predecessors, (70), 68 states have call successors, (70) [2024-11-18 14:14:33,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 618 transitions. [2024-11-18 14:14:33,697 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 618 transitions. Word has length 128 [2024-11-18 14:14:33,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:14:33,697 INFO L471 AbstractCegarLoop]: Abstraction has 412 states and 618 transitions. [2024-11-18 14:14:33,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 20.25) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-18 14:14:33,697 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 618 transitions. [2024-11-18 14:14:33,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-18 14:14:33,700 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:14:33,701 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:14:33,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-18 14:14:33,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:14:33,901 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:14:33,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:14:33,902 INFO L85 PathProgramCache]: Analyzing trace with hash -580569720, now seen corresponding path program 1 times [2024-11-18 14:14:33,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:14:33,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823875363] [2024-11-18 14:14:33,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:14:33,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:14:33,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:14:34,067 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-18 14:14:34,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:14:34,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823875363] [2024-11-18 14:14:34,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823875363] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:14:34,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146575418] [2024-11-18 14:14:34,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:14:34,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:14:34,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:14:34,069 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:14:34,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 14:14:34,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:14:34,389 INFO L255 TraceCheckSpWp]: Trace formula consists of 1103 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 14:14:34,394 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:14:34,447 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-18 14:14:34,447 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:14:34,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146575418] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:14:34,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:14:34,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2024-11-18 14:14:34,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359409112] [2024-11-18 14:14:34,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:14:34,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:14:34,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:14:34,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:14:34,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:14:34,452 INFO L87 Difference]: Start difference. First operand 412 states and 618 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-18 14:14:34,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:14:34,527 INFO L93 Difference]: Finished difference Result 813 states and 1225 transitions. [2024-11-18 14:14:34,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:14:34,528 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2024-11-18 14:14:34,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:14:34,531 INFO L225 Difference]: With dead ends: 813 [2024-11-18 14:14:34,531 INFO L226 Difference]: Without dead ends: 414 [2024-11-18 14:14:34,533 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:14:34,533 INFO L432 NwaCegarLoop]: 519 mSDtfsCounter, 2 mSDsluCounter, 1540 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2059 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:14:34,534 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2059 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:14:34,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2024-11-18 14:14:34,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 414. [2024-11-18 14:14:34,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 319 states have (on average 1.5047021943573669) internal successors, (480), 324 states have internal predecessors, (480), 69 states have call successors, (69), 23 states have call predecessors, (69), 25 states have return successors, (75), 68 states have call predecessors, (75), 68 states have call successors, (75) [2024-11-18 14:14:34,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 624 transitions. [2024-11-18 14:14:34,552 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 624 transitions. Word has length 129 [2024-11-18 14:14:34,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:14:34,552 INFO L471 AbstractCegarLoop]: Abstraction has 414 states and 624 transitions. [2024-11-18 14:14:34,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-18 14:14:34,553 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 624 transitions. [2024-11-18 14:14:34,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-18 14:14:34,555 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:14:34,555 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:14:34,575 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-18 14:14:34,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:14:34,756 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:14:34,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:14:34,757 INFO L85 PathProgramCache]: Analyzing trace with hash 2124784056, now seen corresponding path program 1 times [2024-11-18 14:14:34,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:14:34,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172357721] [2024-11-18 14:14:34,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:14:34,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:14:34,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:14:34,939 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-18 14:14:34,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:14:34,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172357721] [2024-11-18 14:14:34,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172357721] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:14:34,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:14:34,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:14:34,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194257527] [2024-11-18 14:14:34,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:14:34,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:14:34,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:14:34,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:14:34,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:14:34,942 INFO L87 Difference]: Start difference. First operand 414 states and 624 transitions. Second operand has 5 states, 4 states have (on average 19.75) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-18 14:14:34,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:14:34,988 INFO L93 Difference]: Finished difference Result 805 states and 1216 transitions. [2024-11-18 14:14:34,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:14:34,989 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.75) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 130 [2024-11-18 14:14:34,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:14:34,992 INFO L225 Difference]: With dead ends: 805 [2024-11-18 14:14:34,992 INFO L226 Difference]: Without dead ends: 414 [2024-11-18 14:14:34,994 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:14:34,995 INFO L432 NwaCegarLoop]: 522 mSDtfsCounter, 2 mSDsluCounter, 1555 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2077 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:14:34,997 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2077 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:14:34,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2024-11-18 14:14:35,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 414. [2024-11-18 14:14:35,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 319 states have (on average 1.5047021943573669) internal successors, (480), 324 states have internal predecessors, (480), 69 states have call successors, (69), 23 states have call predecessors, (69), 25 states have return successors, (74), 68 states have call predecessors, (74), 68 states have call successors, (74) [2024-11-18 14:14:35,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 623 transitions. [2024-11-18 14:14:35,019 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 623 transitions. Word has length 130 [2024-11-18 14:14:35,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:14:35,021 INFO L471 AbstractCegarLoop]: Abstraction has 414 states and 623 transitions. [2024-11-18 14:14:35,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.75) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-18 14:14:35,021 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 623 transitions. [2024-11-18 14:14:35,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-18 14:14:35,023 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:14:35,023 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:14:35,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 14:14:35,023 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:14:35,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:14:35,024 INFO L85 PathProgramCache]: Analyzing trace with hash 657226353, now seen corresponding path program 2 times [2024-11-18 14:14:35,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:14:35,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012176524] [2024-11-18 14:14:35,026 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:14:35,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:14:35,055 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-18 14:14:35,057 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:14:35,165 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-18 14:14:35,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:14:35,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012176524] [2024-11-18 14:14:35,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012176524] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:14:35,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:14:35,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 14:14:35,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155792131] [2024-11-18 14:14:35,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:14:35,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 14:14:35,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:14:35,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 14:14:35,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:14:35,169 INFO L87 Difference]: Start difference. First operand 414 states and 623 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-18 14:14:35,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:14:35,676 INFO L93 Difference]: Finished difference Result 961 states and 1454 transitions. [2024-11-18 14:14:35,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 14:14:35,676 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) Word has length 131 [2024-11-18 14:14:35,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:14:35,682 INFO L225 Difference]: With dead ends: 961 [2024-11-18 14:14:35,682 INFO L226 Difference]: Without dead ends: 763 [2024-11-18 14:14:35,683 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-11-18 14:14:35,684 INFO L432 NwaCegarLoop]: 552 mSDtfsCounter, 622 mSDsluCounter, 2866 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 3418 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 14:14:35,684 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [624 Valid, 3418 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 14:14:35,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2024-11-18 14:14:35,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 680. [2024-11-18 14:14:35,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 531 states have (on average 1.5480225988700564) internal successors, (822), 537 states have internal predecessors, (822), 108 states have call successors, (108), 39 states have call predecessors, (108), 40 states have return successors, (122), 106 states have call predecessors, (122), 107 states have call successors, (122) [2024-11-18 14:14:35,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 1052 transitions. [2024-11-18 14:14:35,725 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 1052 transitions. Word has length 131 [2024-11-18 14:14:35,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:14:35,726 INFO L471 AbstractCegarLoop]: Abstraction has 680 states and 1052 transitions. [2024-11-18 14:14:35,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-18 14:14:35,726 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 1052 transitions. [2024-11-18 14:14:35,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-18 14:14:35,731 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:14:35,732 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:14:35,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 14:14:35,733 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:14:35,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:14:35,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1659535173, now seen corresponding path program 1 times [2024-11-18 14:14:35,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:14:35,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978707333] [2024-11-18 14:14:35,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:14:35,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:14:35,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:14:35,869 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-18 14:14:35,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:14:35,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978707333] [2024-11-18 14:14:35,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978707333] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:14:35,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:14:35,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:14:35,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43369738] [2024-11-18 14:14:35,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:14:35,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:14:35,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:14:35,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:14:35,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:14:35,872 INFO L87 Difference]: Start difference. First operand 680 states and 1052 transitions. Second operand has 5 states, 4 states have (on average 20.5) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-18 14:14:35,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:14:35,924 INFO L93 Difference]: Finished difference Result 1339 states and 2077 transitions. [2024-11-18 14:14:35,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:14:35,925 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 20.5) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 133 [2024-11-18 14:14:35,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:14:35,929 INFO L225 Difference]: With dead ends: 1339 [2024-11-18 14:14:35,930 INFO L226 Difference]: Without dead ends: 682 [2024-11-18 14:14:35,932 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:14:35,933 INFO L432 NwaCegarLoop]: 523 mSDtfsCounter, 1 mSDsluCounter, 1557 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2080 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 [2024-11-18 14:14:35,933 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2080 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:14:35,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2024-11-18 14:14:35,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 682. [2024-11-18 14:14:35,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 532 states have (on average 1.5469924812030076) internal successors, (823), 539 states have internal predecessors, (823), 108 states have call successors, (108), 39 states have call predecessors, (108), 41 states have return successors, (124), 106 states have call predecessors, (124), 107 states have call successors, (124) [2024-11-18 14:14:35,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 1055 transitions. [2024-11-18 14:14:35,963 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 1055 transitions. Word has length 133 [2024-11-18 14:14:35,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:14:35,963 INFO L471 AbstractCegarLoop]: Abstraction has 682 states and 1055 transitions. [2024-11-18 14:14:35,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 20.5) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-18 14:14:35,964 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 1055 transitions. [2024-11-18 14:14:35,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-18 14:14:35,967 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:14:35,967 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:14:35,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 14:14:35,968 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:14:35,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:14:35,968 INFO L85 PathProgramCache]: Analyzing trace with hash -350929785, now seen corresponding path program 1 times [2024-11-18 14:14:35,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:14:35,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064037829] [2024-11-18 14:14:35,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:14:35,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:14:35,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:14:36,160 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-18 14:14:36,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:14:36,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064037829] [2024-11-18 14:14:36,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064037829] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:14:36,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:14:36,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 14:14:36,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57611018] [2024-11-18 14:14:36,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:14:36,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 14:14:36,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:14:36,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 14:14:36,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:14:36,165 INFO L87 Difference]: Start difference. First operand 682 states and 1055 transitions. Second operand has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 8 states have internal predecessors, (87), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-18 14:14:36,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:14:36,308 INFO L93 Difference]: Finished difference Result 1153 states and 1763 transitions. [2024-11-18 14:14:36,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 14:14:36,309 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 8 states have internal predecessors, (87), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 134 [2024-11-18 14:14:36,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:14:36,313 INFO L225 Difference]: With dead ends: 1153 [2024-11-18 14:14:36,313 INFO L226 Difference]: Without dead ends: 691 [2024-11-18 14:14:36,315 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-18 14:14:36,316 INFO L432 NwaCegarLoop]: 513 mSDtfsCounter, 5 mSDsluCounter, 3049 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3562 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:14:36,316 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 3562 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:14:36,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2024-11-18 14:14:36,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 687. [2024-11-18 14:14:36,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 536 states have (on average 1.544776119402985) internal successors, (828), 543 states have internal predecessors, (828), 108 states have call successors, (108), 40 states have call predecessors, (108), 42 states have return successors, (129), 106 states have call predecessors, (129), 107 states have call successors, (129) [2024-11-18 14:14:36,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 1065 transitions. [2024-11-18 14:14:36,343 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 1065 transitions. Word has length 134 [2024-11-18 14:14:36,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:14:36,344 INFO L471 AbstractCegarLoop]: Abstraction has 687 states and 1065 transitions. [2024-11-18 14:14:36,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 8 states have internal predecessors, (87), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-18 14:14:36,344 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 1065 transitions. [2024-11-18 14:14:36,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-18 14:14:36,347 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:14:36,347 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:14:36,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 14:14:36,348 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:14:36,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:14:36,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1886744868, now seen corresponding path program 1 times [2024-11-18 14:14:36,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:14:36,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562247865] [2024-11-18 14:14:36,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:14:36,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:14:36,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:14:36,464 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-18 14:14:36,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:14:36,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562247865] [2024-11-18 14:14:36,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562247865] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:14:36,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:14:36,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:14:36,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589039034] [2024-11-18 14:14:36,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:14:36,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:14:36,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:14:36,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:14:36,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:14:36,467 INFO L87 Difference]: Start difference. First operand 687 states and 1065 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-18 14:14:36,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:14:36,524 INFO L93 Difference]: Finished difference Result 1151 states and 1766 transitions. [2024-11-18 14:14:36,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:14:36,525 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 135 [2024-11-18 14:14:36,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:14:36,528 INFO L225 Difference]: With dead ends: 1151 [2024-11-18 14:14:36,528 INFO L226 Difference]: Without dead ends: 494 [2024-11-18 14:14:36,530 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:14:36,531 INFO L432 NwaCegarLoop]: 519 mSDtfsCounter, 0 mSDsluCounter, 1540 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2059 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:14:36,531 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2059 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:14:36,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2024-11-18 14:14:36,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 492. [2024-11-18 14:14:36,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 381 states have (on average 1.5065616797900263) internal successors, (574), 388 states have internal predecessors, (574), 75 states have call successors, (75), 32 states have call predecessors, (75), 35 states have return successors, (88), 74 states have call predecessors, (88), 74 states have call successors, (88) [2024-11-18 14:14:36,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 737 transitions. [2024-11-18 14:14:36,550 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 737 transitions. Word has length 135 [2024-11-18 14:14:36,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:14:36,551 INFO L471 AbstractCegarLoop]: Abstraction has 492 states and 737 transitions. [2024-11-18 14:14:36,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-18 14:14:36,551 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 737 transitions. [2024-11-18 14:14:36,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-18 14:14:36,553 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:14:36,553 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:14:36,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 14:14:36,553 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:14:36,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:14:36,554 INFO L85 PathProgramCache]: Analyzing trace with hash 53837146, now seen corresponding path program 1 times [2024-11-18 14:14:36,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:14:36,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174918124] [2024-11-18 14:14:36,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:14:36,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:14:36,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:14:36,678 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-18 14:14:36,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:14:36,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174918124] [2024-11-18 14:14:36,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174918124] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:14:36,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505819037] [2024-11-18 14:14:36,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:14:36,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:14:36,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:14:36,680 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:14:36,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 14:14:36,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:14:36,990 INFO L255 TraceCheckSpWp]: Trace formula consists of 1109 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:14:36,994 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:14:37,016 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-18 14:14:37,017 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:14:37,114 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-18 14:14:37,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505819037] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:14:37,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:14:37,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-18 14:14:37,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073073599] [2024-11-18 14:14:37,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:14:37,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:14:37,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:14:37,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:14:37,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:14:37,117 INFO L87 Difference]: Start difference. First operand 492 states and 737 transitions. Second operand has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-18 14:14:37,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:14:37,260 INFO L93 Difference]: Finished difference Result 1121 states and 1732 transitions. [2024-11-18 14:14:37,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:14:37,261 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 135 [2024-11-18 14:14:37,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:14:37,266 INFO L225 Difference]: With dead ends: 1121 [2024-11-18 14:14:37,267 INFO L226 Difference]: Without dead ends: 844 [2024-11-18 14:14:37,269 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:14:37,269 INFO L432 NwaCegarLoop]: 569 mSDtfsCounter, 465 mSDsluCounter, 1341 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 1910 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:14:37,269 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [510 Valid, 1910 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:14:37,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2024-11-18 14:14:37,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 820. [2024-11-18 14:14:37,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 645 states have (on average 1.5689922480620155) internal successors, (1012), 652 states have internal predecessors, (1012), 139 states have call successors, (139), 32 states have call predecessors, (139), 35 states have return successors, (162), 138 states have call predecessors, (162), 138 states have call successors, (162) [2024-11-18 14:14:37,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1313 transitions. [2024-11-18 14:14:37,303 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1313 transitions. Word has length 135 [2024-11-18 14:14:37,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:14:37,303 INFO L471 AbstractCegarLoop]: Abstraction has 820 states and 1313 transitions. [2024-11-18 14:14:37,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-18 14:14:37,304 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1313 transitions. [2024-11-18 14:14:37,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-18 14:14:37,308 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:14:37,308 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:14:37,328 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-18 14:14:37,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:14:37,513 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:14:37,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:14:37,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1030609929, now seen corresponding path program 1 times [2024-11-18 14:14:37,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:14:37,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411130434] [2024-11-18 14:14:37,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:14:37,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:14:37,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:14:37,579 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-18 14:14:37,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:14:37,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411130434] [2024-11-18 14:14:37,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411130434] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:14:37,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:14:37,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:14:37,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643538478] [2024-11-18 14:14:37,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:14:37,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:14:37,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:14:37,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:14:37,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:14:37,582 INFO L87 Difference]: Start difference. First operand 820 states and 1313 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:14:37,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:14:37,623 INFO L93 Difference]: Finished difference Result 1902 states and 3094 transitions. [2024-11-18 14:14:37,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:14:37,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 141 [2024-11-18 14:14:37,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:14:37,631 INFO L225 Difference]: With dead ends: 1902 [2024-11-18 14:14:37,631 INFO L226 Difference]: Without dead ends: 1153 [2024-11-18 14:14:37,634 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:14:37,635 INFO L432 NwaCegarLoop]: 544 mSDtfsCounter, 105 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 1070 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 [2024-11-18 14:14:37,635 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 1070 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:14:37,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1153 states. [2024-11-18 14:14:37,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1153 to 1145. [2024-11-18 14:14:37,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1145 states, 906 states have (on average 1.586092715231788) internal successors, (1437), 913 states have internal predecessors, (1437), 203 states have call successors, (203), 32 states have call predecessors, (203), 35 states have return successors, (236), 202 states have call predecessors, (236), 202 states have call successors, (236) [2024-11-18 14:14:37,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1145 states to 1145 states and 1876 transitions. [2024-11-18 14:14:37,712 INFO L78 Accepts]: Start accepts. Automaton has 1145 states and 1876 transitions. Word has length 141 [2024-11-18 14:14:37,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:14:37,713 INFO L471 AbstractCegarLoop]: Abstraction has 1145 states and 1876 transitions. [2024-11-18 14:14:37,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:14:37,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1145 states and 1876 transitions. [2024-11-18 14:14:37,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-18 14:14:37,720 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:14:37,720 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:14:37,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 14:14:37,721 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:14:37,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:14:37,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1247143635, now seen corresponding path program 1 times [2024-11-18 14:14:37,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:14:37,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233643779] [2024-11-18 14:14:37,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:14:37,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:14:37,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:14:37,805 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-18 14:14:37,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:14:37,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233643779] [2024-11-18 14:14:37,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233643779] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:14:37,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:14:37,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:14:37,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721129146] [2024-11-18 14:14:37,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:14:37,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:14:37,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:14:37,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:14:37,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:14:37,807 INFO L87 Difference]: Start difference. First operand 1145 states and 1876 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:14:37,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:14:37,873 INFO L93 Difference]: Finished difference Result 2682 states and 4427 transitions. [2024-11-18 14:14:37,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:14:37,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 142 [2024-11-18 14:14:37,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:14:37,887 INFO L225 Difference]: With dead ends: 2682 [2024-11-18 14:14:37,887 INFO L226 Difference]: Without dead ends: 1661 [2024-11-18 14:14:37,893 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:14:37,894 INFO L432 NwaCegarLoop]: 528 mSDtfsCounter, 103 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 1050 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 [2024-11-18 14:14:37,894 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 1050 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:14:37,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1661 states. [2024-11-18 14:14:37,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1661 to 1653. [2024-11-18 14:14:37,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1653 states, 1319 states have (on average 1.598180439727066) internal successors, (2108), 1326 states have internal predecessors, (2108), 298 states have call successors, (298), 32 states have call predecessors, (298), 35 states have return successors, (331), 297 states have call predecessors, (331), 297 states have call successors, (331) [2024-11-18 14:14:37,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1653 states to 1653 states and 2737 transitions. [2024-11-18 14:14:37,977 INFO L78 Accepts]: Start accepts. Automaton has 1653 states and 2737 transitions. Word has length 142 [2024-11-18 14:14:37,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:14:37,977 INFO L471 AbstractCegarLoop]: Abstraction has 1653 states and 2737 transitions. [2024-11-18 14:14:37,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:14:37,978 INFO L276 IsEmpty]: Start isEmpty. Operand 1653 states and 2737 transitions. [2024-11-18 14:14:37,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-18 14:14:37,987 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:14:37,987 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:14:37,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 14:14:37,987 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:14:37,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:14:37,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1832333977, now seen corresponding path program 1 times [2024-11-18 14:14:37,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:14:37,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698297939] [2024-11-18 14:14:37,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:14:37,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:14:38,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:14:38,053 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-18 14:14:38,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:14:38,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698297939] [2024-11-18 14:14:38,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698297939] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:14:38,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:14:38,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:14:38,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827045004] [2024-11-18 14:14:38,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:14:38,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:14:38,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:14:38,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:14:38,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:14:38,055 INFO L87 Difference]: Start difference. First operand 1653 states and 2737 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:14:38,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:14:38,132 INFO L93 Difference]: Finished difference Result 3834 states and 6402 transitions. [2024-11-18 14:14:38,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:14:38,132 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 143 [2024-11-18 14:14:38,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:14:38,149 INFO L225 Difference]: With dead ends: 3834 [2024-11-18 14:14:38,149 INFO L226 Difference]: Without dead ends: 2430 [2024-11-18 14:14:38,157 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:14:38,158 INFO L432 NwaCegarLoop]: 528 mSDtfsCounter, 101 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 1047 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 [2024-11-18 14:14:38,158 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 1047 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:14:38,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2430 states. [2024-11-18 14:14:38,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2430 to 2422. [2024-11-18 14:14:38,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2422 states, 1965 states have (on average 1.6076335877862595) internal successors, (3159), 1972 states have internal predecessors, (3159), 421 states have call successors, (421), 32 states have call predecessors, (421), 35 states have return successors, (470), 420 states have call predecessors, (470), 420 states have call successors, (470) [2024-11-18 14:14:38,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2422 states to 2422 states and 4050 transitions. [2024-11-18 14:14:38,325 INFO L78 Accepts]: Start accepts. Automaton has 2422 states and 4050 transitions. Word has length 143 [2024-11-18 14:14:38,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:14:38,325 INFO L471 AbstractCegarLoop]: Abstraction has 2422 states and 4050 transitions. [2024-11-18 14:14:38,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:14:38,326 INFO L276 IsEmpty]: Start isEmpty. Operand 2422 states and 4050 transitions. [2024-11-18 14:14:38,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-18 14:14:38,339 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:14:38,339 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:14:38,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 14:14:38,339 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:14:38,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:14:38,340 INFO L85 PathProgramCache]: Analyzing trace with hash 650022478, now seen corresponding path program 1 times [2024-11-18 14:14:38,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:14:38,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015866473] [2024-11-18 14:14:38,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:14:38,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:14:38,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:14:38,409 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-18 14:14:38,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:14:38,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015866473] [2024-11-18 14:14:38,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015866473] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:14:38,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:14:38,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:14:38,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557713951] [2024-11-18 14:14:38,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:14:38,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:14:38,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:14:38,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:14:38,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:14:38,412 INFO L87 Difference]: Start difference. First operand 2422 states and 4050 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:14:38,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:14:38,522 INFO L93 Difference]: Finished difference Result 5628 states and 9479 transitions. [2024-11-18 14:14:38,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:14:38,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 144 [2024-11-18 14:14:38,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:14:38,547 INFO L225 Difference]: With dead ends: 5628 [2024-11-18 14:14:38,547 INFO L226 Difference]: Without dead ends: 3659 [2024-11-18 14:14:38,559 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:14:38,560 INFO L432 NwaCegarLoop]: 528 mSDtfsCounter, 99 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 1047 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 [2024-11-18 14:14:38,560 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 1047 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:14:38,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3659 states. [2024-11-18 14:14:38,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3659 to 3651. [2024-11-18 14:14:38,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3651 states, 3015 states have (on average 1.6139303482587064) internal successors, (4866), 3022 states have internal predecessors, (4866), 600 states have call successors, (600), 32 states have call predecessors, (600), 35 states have return successors, (675), 599 states have call predecessors, (675), 599 states have call successors, (675) [2024-11-18 14:14:38,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3651 states to 3651 states and 6141 transitions. [2024-11-18 14:14:38,778 INFO L78 Accepts]: Start accepts. Automaton has 3651 states and 6141 transitions. Word has length 144 [2024-11-18 14:14:38,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:14:38,778 INFO L471 AbstractCegarLoop]: Abstraction has 3651 states and 6141 transitions. [2024-11-18 14:14:38,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:14:38,778 INFO L276 IsEmpty]: Start isEmpty. Operand 3651 states and 6141 transitions. [2024-11-18 14:14:38,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-18 14:14:38,797 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:14:38,797 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:14:38,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 14:14:38,798 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:14:38,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:14:38,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1670565547, now seen corresponding path program 1 times [2024-11-18 14:14:38,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:14:38,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034554845] [2024-11-18 14:14:38,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:14:38,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:14:38,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:14:38,876 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-18 14:14:38,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:14:38,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034554845] [2024-11-18 14:14:38,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034554845] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:14:38,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:14:38,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:14:38,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236860523] [2024-11-18 14:14:38,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:14:38,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:14:38,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:14:38,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:14:38,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:14:38,880 INFO L87 Difference]: Start difference. First operand 3651 states and 6141 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:14:39,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:14:39,020 INFO L93 Difference]: Finished difference Result 8576 states and 14526 transitions. [2024-11-18 14:14:39,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:14:39,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 145 [2024-11-18 14:14:39,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:14:39,058 INFO L225 Difference]: With dead ends: 8576 [2024-11-18 14:14:39,059 INFO L226 Difference]: Without dead ends: 5690 [2024-11-18 14:14:39,074 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:14:39,075 INFO L432 NwaCegarLoop]: 541 mSDtfsCounter, 97 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 1059 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 [2024-11-18 14:14:39,075 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 1059 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:14:39,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5690 states. [2024-11-18 14:14:39,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5690 to 5682. [2024-11-18 14:14:39,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5682 states, 4670 states have (on average 1.609850107066381) internal successors, (7518), 4677 states have internal predecessors, (7518), 976 states have call successors, (976), 32 states have call predecessors, (976), 35 states have return successors, (1095), 975 states have call predecessors, (1095), 975 states have call successors, (1095) [2024-11-18 14:14:39,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5682 states to 5682 states and 9589 transitions. [2024-11-18 14:14:39,447 INFO L78 Accepts]: Start accepts. Automaton has 5682 states and 9589 transitions. Word has length 145 [2024-11-18 14:14:39,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:14:39,448 INFO L471 AbstractCegarLoop]: Abstraction has 5682 states and 9589 transitions. [2024-11-18 14:14:39,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:14:39,449 INFO L276 IsEmpty]: Start isEmpty. Operand 5682 states and 9589 transitions. [2024-11-18 14:14:39,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-18 14:14:39,476 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:14:39,477 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:14:39,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 14:14:39,477 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:14:39,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:14:39,478 INFO L85 PathProgramCache]: Analyzing trace with hash -318180462, now seen corresponding path program 1 times [2024-11-18 14:14:39,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:14:39,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608903298] [2024-11-18 14:14:39,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:14:39,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:14:39,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:14:39,542 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-18 14:14:39,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:14:39,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608903298] [2024-11-18 14:14:39,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608903298] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:14:39,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:14:39,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:14:39,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517351935] [2024-11-18 14:14:39,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:14:39,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:14:39,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:14:39,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:14:39,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:14:39,545 INFO L87 Difference]: Start difference. First operand 5682 states and 9589 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:14:39,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:14:39,871 INFO L93 Difference]: Finished difference Result 13913 states and 23636 transitions. [2024-11-18 14:14:39,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:14:39,872 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 146 [2024-11-18 14:14:39,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:14:39,953 INFO L225 Difference]: With dead ends: 13913 [2024-11-18 14:14:39,954 INFO L226 Difference]: Without dead ends: 9373 [2024-11-18 14:14:39,979 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:14:39,980 INFO L432 NwaCegarLoop]: 528 mSDtfsCounter, 95 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 1050 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 [2024-11-18 14:14:39,980 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 1050 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:14:39,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9373 states. [2024-11-18 14:14:40,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9373 to 9365. [2024-11-18 14:14:40,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9365 states, 7747 states have (on average 1.6088808571059765) internal successors, (12464), 7754 states have internal predecessors, (12464), 1582 states have call successors, (1582), 32 states have call predecessors, (1582), 35 states have return successors, (1779), 1581 states have call predecessors, (1779), 1581 states have call successors, (1779) [2024-11-18 14:14:40,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9365 states to 9365 states and 15825 transitions. [2024-11-18 14:14:40,579 INFO L78 Accepts]: Start accepts. Automaton has 9365 states and 15825 transitions. Word has length 146 [2024-11-18 14:14:40,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:14:40,580 INFO L471 AbstractCegarLoop]: Abstraction has 9365 states and 15825 transitions. [2024-11-18 14:14:40,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:14:40,581 INFO L276 IsEmpty]: Start isEmpty. Operand 9365 states and 15825 transitions. [2024-11-18 14:14:40,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-18 14:14:40,617 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:14:40,617 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:14:40,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-18 14:14:40,618 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:14:40,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:14:40,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1742569149, now seen corresponding path program 1 times [2024-11-18 14:14:40,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:14:40,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673642370] [2024-11-18 14:14:40,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:14:40,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:14:40,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:14:40,682 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-18 14:14:40,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:14:40,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673642370] [2024-11-18 14:14:40,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673642370] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:14:40,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:14:40,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:14:40,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679397282] [2024-11-18 14:14:40,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:14:40,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:14:40,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:14:40,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:14:40,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:14:40,685 INFO L87 Difference]: Start difference. First operand 9365 states and 15825 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:14:41,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:14:41,169 INFO L93 Difference]: Finished difference Result 24097 states and 40901 transitions. [2024-11-18 14:14:41,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:14:41,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 147 [2024-11-18 14:14:41,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:14:41,236 INFO L225 Difference]: With dead ends: 24097 [2024-11-18 14:14:41,236 INFO L226 Difference]: Without dead ends: 16326 [2024-11-18 14:14:41,267 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:14:41,268 INFO L432 NwaCegarLoop]: 534 mSDtfsCounter, 93 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 1058 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 [2024-11-18 14:14:41,268 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 1058 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:14:41,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16326 states. [2024-11-18 14:14:41,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16326 to 16318. [2024-11-18 14:14:41,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16318 states, 13497 states have (on average 1.6008001778172927) internal successors, (21606), 13504 states have internal predecessors, (21606), 2785 states have call successors, (2785), 32 states have call predecessors, (2785), 35 states have return successors, (3126), 2784 states have call predecessors, (3126), 2784 states have call successors, (3126) [2024-11-18 14:14:42,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16318 states to 16318 states and 27517 transitions. [2024-11-18 14:14:42,031 INFO L78 Accepts]: Start accepts. Automaton has 16318 states and 27517 transitions. Word has length 147 [2024-11-18 14:14:42,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:14:42,032 INFO L471 AbstractCegarLoop]: Abstraction has 16318 states and 27517 transitions. [2024-11-18 14:14:42,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:14:42,033 INFO L276 IsEmpty]: Start isEmpty. Operand 16318 states and 27517 transitions. [2024-11-18 14:14:42,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-18 14:14:42,084 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:14:42,084 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:14:42,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-18 14:14:42,084 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:14:42,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:14:42,085 INFO L85 PathProgramCache]: Analyzing trace with hash 670755283, now seen corresponding path program 1 times [2024-11-18 14:14:42,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:14:42,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870055389] [2024-11-18 14:14:42,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:14:42,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:14:42,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:14:42,151 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-18 14:14:42,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:14:42,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870055389] [2024-11-18 14:14:42,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870055389] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:14:42,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:14:42,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:14:42,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952141660] [2024-11-18 14:14:42,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:14:42,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:14:42,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:14:42,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:14:42,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:14:42,155 INFO L87 Difference]: Start difference. First operand 16318 states and 27517 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:14:43,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:14:43,313 INFO L93 Difference]: Finished difference Result 43063 states and 72960 transitions. [2024-11-18 14:14:43,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:14:43,314 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 148 [2024-11-18 14:14:43,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:14:43,446 INFO L225 Difference]: With dead ends: 43063 [2024-11-18 14:14:43,446 INFO L226 Difference]: Without dead ends: 28981 [2024-11-18 14:14:43,497 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:14:43,498 INFO L432 NwaCegarLoop]: 528 mSDtfsCounter, 91 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 1050 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 [2024-11-18 14:14:43,498 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 1050 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:14:43,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28981 states. [2024-11-18 14:14:44,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28981 to 28973. [2024-11-18 14:14:44,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28973 states, 24113 states have (on average 1.597063824493012) internal successors, (38510), 24120 states have internal predecessors, (38510), 4824 states have call successors, (4824), 32 states have call predecessors, (4824), 35 states have return successors, (5439), 4823 states have call predecessors, (5439), 4823 states have call successors, (5439) [2024-11-18 14:14:45,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28973 states to 28973 states and 48773 transitions. [2024-11-18 14:14:45,236 INFO L78 Accepts]: Start accepts. Automaton has 28973 states and 48773 transitions. Word has length 148 [2024-11-18 14:14:45,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:14:45,237 INFO L471 AbstractCegarLoop]: Abstraction has 28973 states and 48773 transitions. [2024-11-18 14:14:45,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:14:45,238 INFO L276 IsEmpty]: Start isEmpty. Operand 28973 states and 48773 transitions. [2024-11-18 14:14:45,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-18 14:14:45,299 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:14:45,300 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:14:45,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-18 14:14:45,301 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:14:45,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:14:45,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1842213723, now seen corresponding path program 1 times [2024-11-18 14:14:45,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:14:45,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649579131] [2024-11-18 14:14:45,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:14:45,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:14:45,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:14:45,369 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-18 14:14:45,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:14:45,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649579131] [2024-11-18 14:14:45,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649579131] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:14:45,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:14:45,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:14:45,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895237683] [2024-11-18 14:14:45,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:14:45,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:14:45,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:14:45,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:14:45,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:14:45,371 INFO L87 Difference]: Start difference. First operand 28973 states and 48773 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:14:47,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:14:47,069 INFO L93 Difference]: Finished difference Result 78825 states and 133187 transitions. [2024-11-18 14:14:47,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:14:47,069 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 149 [2024-11-18 14:14:47,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:14:47,351 INFO L225 Difference]: With dead ends: 78825 [2024-11-18 14:14:47,351 INFO L226 Difference]: Without dead ends: 52860 [2024-11-18 14:14:47,426 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:14:47,428 INFO L432 NwaCegarLoop]: 529 mSDtfsCounter, 89 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 1051 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 [2024-11-18 14:14:47,428 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 1051 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:14:47,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52860 states. [2024-11-18 14:14:49,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52860 to 52852. [2024-11-18 14:14:49,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52852 states, 44277 states have (on average 1.5917745104681889) internal successors, (70479), 44284 states have internal predecessors, (70479), 8539 states have call successors, (8539), 32 states have call predecessors, (8539), 35 states have return successors, (9686), 8538 states have call predecessors, (9686), 8538 states have call successors, (9686) [2024-11-18 14:14:49,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52852 states to 52852 states and 88704 transitions. [2024-11-18 14:14:49,912 INFO L78 Accepts]: Start accepts. Automaton has 52852 states and 88704 transitions. Word has length 149 [2024-11-18 14:14:49,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:14:49,912 INFO L471 AbstractCegarLoop]: Abstraction has 52852 states and 88704 transitions. [2024-11-18 14:14:49,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:14:49,913 INFO L276 IsEmpty]: Start isEmpty. Operand 52852 states and 88704 transitions. [2024-11-18 14:14:49,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-18 14:14:49,976 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:14:49,976 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:14:49,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-18 14:14:49,977 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:14:49,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:14:49,977 INFO L85 PathProgramCache]: Analyzing trace with hash 801751667, now seen corresponding path program 1 times [2024-11-18 14:14:49,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:14:49,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530669949] [2024-11-18 14:14:49,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:14:49,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:14:50,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:14:50,043 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-18 14:14:50,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:14:50,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530669949] [2024-11-18 14:14:50,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530669949] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:14:50,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:14:50,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:14:50,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684990153] [2024-11-18 14:14:50,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:14:50,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:14:50,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:14:50,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:14:50,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:14:50,045 INFO L87 Difference]: Start difference. First operand 52852 states and 88704 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:14:52,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:14:52,620 INFO L93 Difference]: Finished difference Result 98596 states and 165805 transitions. [2024-11-18 14:14:52,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:14:52,621 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 150 [2024-11-18 14:14:52,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:14:53,125 INFO L225 Difference]: With dead ends: 98596 [2024-11-18 14:14:53,125 INFO L226 Difference]: Without dead ends: 98319 [2024-11-18 14:14:53,192 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:14:53,193 INFO L432 NwaCegarLoop]: 530 mSDtfsCounter, 84 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 1056 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:14:53,193 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 1056 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:14:53,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98319 states. [2024-11-18 14:14:56,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98319 to 98311. [2024-11-18 14:14:57,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98311 states, 82937 states have (on average 1.5849259076166247) internal successors, (131449), 82944 states have internal predecessors, (131449), 15338 states have call successors, (15338), 32 states have call predecessors, (15338), 35 states have return successors, (17531), 15337 states have call predecessors, (17531), 15337 states have call successors, (17531) [2024-11-18 14:14:57,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98311 states to 98311 states and 164318 transitions. [2024-11-18 14:14:57,786 INFO L78 Accepts]: Start accepts. Automaton has 98311 states and 164318 transitions. Word has length 150 [2024-11-18 14:14:57,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:14:57,787 INFO L471 AbstractCegarLoop]: Abstraction has 98311 states and 164318 transitions. [2024-11-18 14:14:57,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:14:57,787 INFO L276 IsEmpty]: Start isEmpty. Operand 98311 states and 164318 transitions. [2024-11-18 14:14:57,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-18 14:14:57,871 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:14:57,872 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:14:57,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-18 14:14:57,872 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:14:57,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:14:57,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1246207516, now seen corresponding path program 1 times [2024-11-18 14:14:57,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:14:57,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659074771] [2024-11-18 14:14:57,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:14:57,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:14:57,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:14:58,328 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-18 14:14:58,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:14:58,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659074771] [2024-11-18 14:14:58,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659074771] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:14:58,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558260423] [2024-11-18 14:14:58,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:14:58,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:14:58,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:14:58,331 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:14:58,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 14:14:58,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:14:58,685 INFO L255 TraceCheckSpWp]: Trace formula consists of 1160 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-18 14:14:58,691 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:14:58,934 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-18 14:14:58,935 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:14:59,355 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-18 14:14:59,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558260423] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:14:59,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:14:59,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 9] total 28 [2024-11-18 14:14:59,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223067396] [2024-11-18 14:14:59,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:14:59,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-18 14:14:59,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:14:59,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-18 14:14:59,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=688, Unknown=0, NotChecked=0, Total=756 [2024-11-18 14:14:59,359 INFO L87 Difference]: Start difference. First operand 98311 states and 164318 transitions. Second operand has 28 states, 26 states have (on average 9.576923076923077) internal successors, (249), 24 states have internal predecessors, (249), 9 states have call successors, (47), 8 states have call predecessors, (47), 12 states have return successors, (42), 11 states have call predecessors, (42), 9 states have call successors, (42) [2024-11-18 14:15:15,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:15:15,753 INFO L93 Difference]: Finished difference Result 392515 states and 679868 transitions. [2024-11-18 14:15:15,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2024-11-18 14:15:15,754 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 9.576923076923077) internal successors, (249), 24 states have internal predecessors, (249), 9 states have call successors, (47), 8 states have call predecessors, (47), 12 states have return successors, (42), 11 states have call predecessors, (42), 9 states have call successors, (42) Word has length 151 [2024-11-18 14:15:15,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:15:18,150 INFO L225 Difference]: With dead ends: 392515 [2024-11-18 14:15:18,150 INFO L226 Difference]: Without dead ends: 392263 [2024-11-18 14:15:18,386 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3486 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1363, Invalid=11293, Unknown=0, NotChecked=0, Total=12656 [2024-11-18 14:15:18,386 INFO L432 NwaCegarLoop]: 233 mSDtfsCounter, 6248 mSDsluCounter, 5096 mSDsCounter, 0 mSdLazyCounter, 12091 mSolverCounterSat, 1889 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6304 SdHoareTripleChecker+Valid, 5329 SdHoareTripleChecker+Invalid, 13980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1889 IncrementalHoareTripleChecker+Valid, 12091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2024-11-18 14:15:18,387 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6304 Valid, 5329 Invalid, 13980 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1889 Valid, 12091 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2024-11-18 14:15:18,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392263 states. [2024-11-18 14:15:32,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392263 to 391809. [2024-11-18 14:15:33,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391809 states, 330646 states have (on average 1.5856595875951924) internal successors, (524292), 330459 states have internal predecessors, (524292), 60966 states have call successors, (60966), 172 states have call predecessors, (60966), 196 states have return successors, (84940), 61193 states have call predecessors, (84940), 60960 states have call successors, (84940)