./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec9_product12.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_spec9_product12.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 4d7925e6725ebc9ccc1628dac3a92336bad7d7149419f1b3b2e679ed4e3055d5 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 14:15:59,159 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 14:15:59,252 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 14:15:59,258 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 14:15:59,258 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 14:15:59,294 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 14:15:59,295 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 14:15:59,296 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 14:15:59,297 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 14:15:59,298 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 14:15:59,299 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 14:15:59,300 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 14:15:59,300 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 14:15:59,301 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 14:15:59,303 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 14:15:59,304 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 14:15:59,304 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 14:15:59,304 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 14:15:59,305 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 14:15:59,305 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 14:15:59,305 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 14:15:59,309 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 14:15:59,309 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 14:15:59,310 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 14:15:59,310 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 14:15:59,310 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 14:15:59,310 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 14:15:59,311 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 14:15:59,311 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 14:15:59,311 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 14:15:59,311 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 14:15:59,312 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 14:15:59,312 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:15:59,312 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 14:15:59,312 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 14:15:59,313 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 14:15:59,313 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 14:15:59,313 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 14:15:59,313 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 14:15:59,313 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 14:15:59,314 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 14:15:59,315 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 14:15:59,316 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d7925e6725ebc9ccc1628dac3a92336bad7d7149419f1b3b2e679ed4e3055d5 [2024-11-18 14:15:59,593 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 14:15:59,619 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 14:15:59,622 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 14:15:59,624 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 14:15:59,624 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 14:15:59,625 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec9_product12.cil.c [2024-11-18 14:16:01,104 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 14:16:01,412 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 14:16:01,413 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec9_product12.cil.c [2024-11-18 14:16:01,450 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f342fb8d4/06d10ece541d4ce78f105b945f456830/FLAG8aa899891 [2024-11-18 14:16:01,694 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f342fb8d4/06d10ece541d4ce78f105b945f456830 [2024-11-18 14:16:01,696 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 14:16:01,697 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 14:16:01,699 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 14:16:01,699 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 14:16:01,703 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 14:16:01,704 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:16:01" (1/1) ... [2024-11-18 14:16:01,705 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ef0e26f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:16:01, skipping insertion in model container [2024-11-18 14:16:01,705 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:16:01" (1/1) ... [2024-11-18 14:16:01,775 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 14:16:02,324 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_spec9_product12.cil.c[29763,29776] [2024-11-18 14:16:02,419 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:16:02,434 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 14:16:02,445 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EncryptForward_spec.i","") [48] [2024-11-18 14:16:02,447 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [105] [2024-11-18 14:16:02,447 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [122] [2024-11-18 14:16:02,448 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [160] [2024-11-18 14:16:02,448 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [405] [2024-11-18 14:16:02,448 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [811] [2024-11-18 14:16:02,448 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1091] [2024-11-18 14:16:02,449 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1457] [2024-11-18 14:16:02,449 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [1466] [2024-11-18 14:16:02,449 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [1570] [2024-11-18 14:16:02,450 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2639] [2024-11-18 14:16:02,500 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_spec9_product12.cil.c[29763,29776] [2024-11-18 14:16:02,535 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:16:02,598 INFO L204 MainTranslator]: Completed translation [2024-11-18 14:16:02,598 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:16:02 WrapperNode [2024-11-18 14:16:02,599 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 14:16:02,600 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 14:16:02,600 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 14:16:02,600 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 14:16:02,623 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:16:02" (1/1) ... [2024-11-18 14:16:02,650 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:16:02" (1/1) ... [2024-11-18 14:16:02,699 INFO L138 Inliner]: procedures = 123, calls = 177, calls flagged for inlining = 51, calls inlined = 41, statements flattened = 840 [2024-11-18 14:16:02,700 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 14:16:02,701 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 14:16:02,701 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 14:16:02,701 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 14:16:02,717 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:16:02" (1/1) ... [2024-11-18 14:16:02,717 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:16:02" (1/1) ... [2024-11-18 14:16:02,723 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:16:02" (1/1) ... [2024-11-18 14:16:02,753 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 14:16:02,754 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:16:02" (1/1) ... [2024-11-18 14:16:02,754 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:16:02" (1/1) ... [2024-11-18 14:16:02,777 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:16:02" (1/1) ... [2024-11-18 14:16:02,797 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:16:02" (1/1) ... [2024-11-18 14:16:02,804 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:16:02" (1/1) ... [2024-11-18 14:16:02,812 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:16:02" (1/1) ... [2024-11-18 14:16:02,826 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 14:16:02,827 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 14:16:02,827 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 14:16:02,827 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 14:16:02,828 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:16:02" (1/1) ... [2024-11-18 14:16:02,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:16:02,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:16:02,876 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 14:16:02,883 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 14:16:02,937 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2024-11-18 14:16:02,937 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2024-11-18 14:16:02,937 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2024-11-18 14:16:02,937 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2024-11-18 14:16:02,938 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2024-11-18 14:16:02,938 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2024-11-18 14:16:02,938 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2024-11-18 14:16:02,939 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2024-11-18 14:16:02,939 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2024-11-18 14:16:02,939 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2024-11-18 14:16:02,939 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2024-11-18 14:16:02,940 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2024-11-18 14:16:02,940 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2024-11-18 14:16:02,940 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2024-11-18 14:16:02,941 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2024-11-18 14:16:02,941 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2024-11-18 14:16:02,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 14:16:02,941 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2024-11-18 14:16:02,941 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2024-11-18 14:16:02,942 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2024-11-18 14:16:02,942 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2024-11-18 14:16:02,942 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2024-11-18 14:16:02,942 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2024-11-18 14:16:02,942 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2024-11-18 14:16:02,942 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2024-11-18 14:16:02,942 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2024-11-18 14:16:02,942 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2024-11-18 14:16:02,942 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2024-11-18 14:16:02,942 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2024-11-18 14:16:02,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 14:16:02,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 14:16:02,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-18 14:16:02,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-18 14:16:02,943 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2024-11-18 14:16:02,943 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2024-11-18 14:16:02,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 14:16:02,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 14:16:03,168 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 14:16:03,171 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 14:16:04,003 INFO L? ?]: Removed 339 outVars from TransFormulas that were not future-live. [2024-11-18 14:16:04,003 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 14:16:04,028 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 14:16:04,029 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 14:16:04,030 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:16:04 BoogieIcfgContainer [2024-11-18 14:16:04,030 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 14:16:04,032 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 14:16:04,032 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 14:16:04,037 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 14:16:04,037 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 02:16:01" (1/3) ... [2024-11-18 14:16:04,038 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77a288a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:16:04, skipping insertion in model container [2024-11-18 14:16:04,038 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:16:02" (2/3) ... [2024-11-18 14:16:04,039 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77a288a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:16:04, skipping insertion in model container [2024-11-18 14:16:04,039 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:16:04" (3/3) ... [2024-11-18 14:16:04,041 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec9_product12.cil.c [2024-11-18 14:16:04,057 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 14:16:04,058 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 14:16:04,150 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 14:16:04,158 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;@2337cd58, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 14:16:04,160 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 14:16:04,167 INFO L276 IsEmpty]: Start isEmpty. Operand has 262 states, 206 states have (on average 1.5533980582524272) internal successors, (320), 210 states have internal predecessors, (320), 39 states have call successors, (39), 15 states have call predecessors, (39), 15 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-18 14:16:04,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-18 14:16:04,185 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:16:04,186 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:16:04,187 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:16:04,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:16:04,194 INFO L85 PathProgramCache]: Analyzing trace with hash 2039353953, now seen corresponding path program 1 times [2024-11-18 14:16:04,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:16:04,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421277228] [2024-11-18 14:16:04,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:16:04,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:16:04,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:16:04,998 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-18 14:16:04,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:16:04,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421277228] [2024-11-18 14:16:05,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421277228] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:16:05,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363270600] [2024-11-18 14:16:05,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:16:05,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:16:05,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:16:05,006 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 14:16:05,008 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 14:16:05,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:16:05,328 INFO L255 TraceCheckSpWp]: Trace formula consists of 878 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 14:16:05,338 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:16:05,364 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-18 14:16:05,364 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:16:05,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363270600] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:16:05,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:16:05,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 5 [2024-11-18 14:16:05,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899658527] [2024-11-18 14:16:05,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:16:05,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 14:16:05,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:16:05,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 14:16:05,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:16:05,412 INFO L87 Difference]: Start difference. First operand has 262 states, 206 states have (on average 1.5533980582524272) internal successors, (320), 210 states have internal predecessors, (320), 39 states have call successors, (39), 15 states have call predecessors, (39), 15 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Second operand has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 14:16:05,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:16:05,461 INFO L93 Difference]: Finished difference Result 375 states and 558 transitions. [2024-11-18 14:16:05,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 14:16:05,463 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 86 [2024-11-18 14:16:05,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:16:05,475 INFO L225 Difference]: With dead ends: 375 [2024-11-18 14:16:05,476 INFO L226 Difference]: Without dead ends: 255 [2024-11-18 14:16:05,482 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 87 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 14:16:05,485 INFO L432 NwaCegarLoop]: 394 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, 394 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 14:16:05,486 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:16:05,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2024-11-18 14:16:05,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2024-11-18 14:16:05,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 200 states have (on average 1.545) internal successors, (309), 203 states have internal predecessors, (309), 39 states have call successors, (39), 15 states have call predecessors, (39), 15 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-18 14:16:05,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 386 transitions. [2024-11-18 14:16:05,558 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 386 transitions. Word has length 86 [2024-11-18 14:16:05,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:16:05,560 INFO L471 AbstractCegarLoop]: Abstraction has 255 states and 386 transitions. [2024-11-18 14:16:05,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 14:16:05,561 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 386 transitions. [2024-11-18 14:16:05,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-18 14:16:05,569 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:16:05,569 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:16:05,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 14:16:05,770 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 14:16:05,770 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:16:05,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:16:05,771 INFO L85 PathProgramCache]: Analyzing trace with hash 71453907, now seen corresponding path program 1 times [2024-11-18 14:16:05,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:16:05,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364905968] [2024-11-18 14:16:05,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:16:05,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:16:05,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:16:05,977 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-18 14:16:05,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:16:05,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364905968] [2024-11-18 14:16:05,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364905968] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:16:05,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977832548] [2024-11-18 14:16:05,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:16:05,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:16:05,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:16:05,980 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 14:16:05,982 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 14:16:06,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:16:06,310 INFO L255 TraceCheckSpWp]: Trace formula consists of 879 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 14:16:06,314 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:16:06,352 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-18 14:16:06,352 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:16:06,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977832548] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:16:06,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:16:06,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 14:16:06,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097099032] [2024-11-18 14:16:06,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:16:06,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:16:06,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:16:06,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:16:06,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:16:06,360 INFO L87 Difference]: Start difference. First operand 255 states and 386 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 14:16:06,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:16:06,408 INFO L93 Difference]: Finished difference Result 365 states and 539 transitions. [2024-11-18 14:16:06,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:16:06,409 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 87 [2024-11-18 14:16:06,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:16:06,412 INFO L225 Difference]: With dead ends: 365 [2024-11-18 14:16:06,412 INFO L226 Difference]: Without dead ends: 258 [2024-11-18 14:16:06,414 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 87 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 14:16:06,415 INFO L432 NwaCegarLoop]: 384 mSDtfsCounter, 1 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 766 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 14:16:06,415 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 766 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:16:06,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2024-11-18 14:16:06,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 257. [2024-11-18 14:16:06,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 202 states have (on average 1.5396039603960396) internal successors, (311), 205 states have internal predecessors, (311), 39 states have call successors, (39), 15 states have call predecessors, (39), 15 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-18 14:16:06,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 388 transitions. [2024-11-18 14:16:06,444 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 388 transitions. Word has length 87 [2024-11-18 14:16:06,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:16:06,445 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 388 transitions. [2024-11-18 14:16:06,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 14:16:06,446 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 388 transitions. [2024-11-18 14:16:06,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-18 14:16:06,454 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:16:06,454 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:16:06,471 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 14:16:06,654 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 14:16:06,655 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:16:06,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:16:06,656 INFO L85 PathProgramCache]: Analyzing trace with hash -153867190, now seen corresponding path program 1 times [2024-11-18 14:16:06,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:16:06,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763416327] [2024-11-18 14:16:06,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:16:06,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:16:06,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:16:06,845 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-18 14:16:06,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:16:06,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763416327] [2024-11-18 14:16:06,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763416327] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:16:06,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691150015] [2024-11-18 14:16:06,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:16:06,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:16:06,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:16:06,849 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 14:16:06,850 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 14:16:07,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:16:07,098 INFO L255 TraceCheckSpWp]: Trace formula consists of 891 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:16:07,102 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:16:07,119 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-18 14:16:07,119 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:16:07,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691150015] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:16:07,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:16:07,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 14:16:07,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995900672] [2024-11-18 14:16:07,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:16:07,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:16:07,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:16:07,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:16:07,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:16:07,122 INFO L87 Difference]: Start difference. First operand 257 states and 388 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 14:16:07,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:16:07,161 INFO L93 Difference]: Finished difference Result 539 states and 827 transitions. [2024-11-18 14:16:07,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:16:07,162 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 93 [2024-11-18 14:16:07,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:16:07,166 INFO L225 Difference]: With dead ends: 539 [2024-11-18 14:16:07,168 INFO L226 Difference]: Without dead ends: 309 [2024-11-18 14:16:07,170 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 93 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 14:16:07,172 INFO L432 NwaCegarLoop]: 401 mSDtfsCounter, 99 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 741 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 14:16:07,173 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 741 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:16:07,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2024-11-18 14:16:07,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 301. [2024-11-18 14:16:07,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 235 states have (on average 1.553191489361702) internal successors, (365), 238 states have internal predecessors, (365), 50 states have call successors, (50), 15 states have call predecessors, (50), 15 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2024-11-18 14:16:07,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 464 transitions. [2024-11-18 14:16:07,250 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 464 transitions. Word has length 93 [2024-11-18 14:16:07,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:16:07,251 INFO L471 AbstractCegarLoop]: Abstraction has 301 states and 464 transitions. [2024-11-18 14:16:07,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 14:16:07,253 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 464 transitions. [2024-11-18 14:16:07,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-18 14:16:07,255 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:16:07,255 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:16:07,277 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 14:16:07,459 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 14:16:07,460 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:16:07,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:16:07,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1701782700, now seen corresponding path program 1 times [2024-11-18 14:16:07,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:16:07,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846709771] [2024-11-18 14:16:07,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:16:07,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:16:07,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:16:07,653 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-18 14:16:07,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:16:07,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846709771] [2024-11-18 14:16:07,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846709771] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:16:07,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774872517] [2024-11-18 14:16:07,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:16:07,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:16:07,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:16:07,657 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 14:16:07,658 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 14:16:07,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:16:07,910 INFO L255 TraceCheckSpWp]: Trace formula consists of 896 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 14:16:07,915 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:16:08,005 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-18 14:16:08,006 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:16:08,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774872517] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:16:08,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:16:08,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-18 14:16:08,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825419276] [2024-11-18 14:16:08,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:16:08,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:16:08,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:16:08,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:16:08,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:16:08,011 INFO L87 Difference]: Start difference. First operand 301 states and 464 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 14:16:08,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:16:08,079 INFO L93 Difference]: Finished difference Result 593 states and 918 transitions. [2024-11-18 14:16:08,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:16:08,081 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 94 [2024-11-18 14:16:08,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:16:08,084 INFO L225 Difference]: With dead ends: 593 [2024-11-18 14:16:08,084 INFO L226 Difference]: Without dead ends: 303 [2024-11-18 14:16:08,088 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 92 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 14:16:08,089 INFO L432 NwaCegarLoop]: 378 mSDtfsCounter, 2 mSDsluCounter, 1123 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1501 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 14:16:08,089 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1501 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:16:08,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2024-11-18 14:16:08,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 303. [2024-11-18 14:16:08,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 236 states have (on average 1.5508474576271187) internal successors, (366), 240 states have internal predecessors, (366), 50 states have call successors, (50), 15 states have call predecessors, (50), 16 states have return successors, (51), 49 states have call predecessors, (51), 49 states have call successors, (51) [2024-11-18 14:16:08,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 467 transitions. [2024-11-18 14:16:08,117 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 467 transitions. Word has length 94 [2024-11-18 14:16:08,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:16:08,117 INFO L471 AbstractCegarLoop]: Abstraction has 303 states and 467 transitions. [2024-11-18 14:16:08,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 14:16:08,118 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 467 transitions. [2024-11-18 14:16:08,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-18 14:16:08,121 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:16:08,121 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:16:08,142 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 14:16:08,321 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 14:16:08,322 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:16:08,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:16:08,322 INFO L85 PathProgramCache]: Analyzing trace with hash 361139953, now seen corresponding path program 1 times [2024-11-18 14:16:08,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:16:08,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811139842] [2024-11-18 14:16:08,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:16:08,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:16:08,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:16:08,512 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-18 14:16:08,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:16:08,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811139842] [2024-11-18 14:16:08,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811139842] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:16:08,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897975252] [2024-11-18 14:16:08,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:16:08,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:16:08,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:16:08,516 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 14:16:08,519 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 14:16:08,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:16:08,805 INFO L255 TraceCheckSpWp]: Trace formula consists of 897 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 14:16:08,811 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:16:08,865 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-18 14:16:08,865 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:16:08,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897975252] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:16:08,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:16:08,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2024-11-18 14:16:08,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777438095] [2024-11-18 14:16:08,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:16:08,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:16:08,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:16:08,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:16:08,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:16:08,869 INFO L87 Difference]: Start difference. First operand 303 states and 467 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 14:16:08,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:16:08,932 INFO L93 Difference]: Finished difference Result 595 states and 923 transitions. [2024-11-18 14:16:08,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:16:08,933 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 95 [2024-11-18 14:16:08,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:16:08,935 INFO L225 Difference]: With dead ends: 595 [2024-11-18 14:16:08,935 INFO L226 Difference]: Without dead ends: 305 [2024-11-18 14:16:08,937 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 93 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 14:16:08,937 INFO L432 NwaCegarLoop]: 376 mSDtfsCounter, 2 mSDsluCounter, 1111 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1487 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 14:16:08,938 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1487 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:16:08,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2024-11-18 14:16:08,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2024-11-18 14:16:08,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 237 states have (on average 1.5485232067510548) internal successors, (367), 242 states have internal predecessors, (367), 50 states have call successors, (50), 15 states have call predecessors, (50), 17 states have return successors, (56), 49 states have call predecessors, (56), 49 states have call successors, (56) [2024-11-18 14:16:08,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 473 transitions. [2024-11-18 14:16:08,953 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 473 transitions. Word has length 95 [2024-11-18 14:16:08,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:16:08,953 INFO L471 AbstractCegarLoop]: Abstraction has 305 states and 473 transitions. [2024-11-18 14:16:08,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 14:16:08,954 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 473 transitions. [2024-11-18 14:16:08,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-18 14:16:08,956 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:16:08,956 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:16:08,975 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 14:16:09,156 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 14:16:09,158 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:16:09,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:16:09,158 INFO L85 PathProgramCache]: Analyzing trace with hash 639964823, now seen corresponding path program 1 times [2024-11-18 14:16:09,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:16:09,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418663939] [2024-11-18 14:16:09,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:16:09,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:16:09,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:16:09,290 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-18 14:16:09,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:16:09,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418663939] [2024-11-18 14:16:09,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418663939] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:16:09,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:16:09,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:16:09,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793761753] [2024-11-18 14:16:09,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:16:09,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:16:09,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:16:09,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:16:09,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:16:09,293 INFO L87 Difference]: Start difference. First operand 305 states and 473 transitions. Second operand has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 14:16:09,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:16:09,334 INFO L93 Difference]: Finished difference Result 587 states and 914 transitions. [2024-11-18 14:16:09,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:16:09,335 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 96 [2024-11-18 14:16:09,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:16:09,338 INFO L225 Difference]: With dead ends: 587 [2024-11-18 14:16:09,338 INFO L226 Difference]: Without dead ends: 305 [2024-11-18 14:16:09,339 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 14:16:09,340 INFO L432 NwaCegarLoop]: 379 mSDtfsCounter, 2 mSDsluCounter, 1126 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1505 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 14:16:09,340 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1505 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:16:09,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2024-11-18 14:16:09,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2024-11-18 14:16:09,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 237 states have (on average 1.5485232067510548) internal successors, (367), 242 states have internal predecessors, (367), 50 states have call successors, (50), 15 states have call predecessors, (50), 17 states have return successors, (55), 49 states have call predecessors, (55), 49 states have call successors, (55) [2024-11-18 14:16:09,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 472 transitions. [2024-11-18 14:16:09,359 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 472 transitions. Word has length 96 [2024-11-18 14:16:09,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:16:09,361 INFO L471 AbstractCegarLoop]: Abstraction has 305 states and 472 transitions. [2024-11-18 14:16:09,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 14:16:09,361 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 472 transitions. [2024-11-18 14:16:09,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-18 14:16:09,364 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:16:09,364 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:16:09,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 14:16:09,365 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:16:09,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:16:09,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1163878910, now seen corresponding path program 2 times [2024-11-18 14:16:09,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:16:09,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567735122] [2024-11-18 14:16:09,366 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:16:09,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:16:09,411 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 14:16:09,411 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:16:09,519 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-18 14:16:09,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:16:09,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567735122] [2024-11-18 14:16:09,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567735122] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:16:09,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:16:09,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:16:09,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804761850] [2024-11-18 14:16:09,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:16:09,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:16:09,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:16:09,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:16:09,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:16:09,522 INFO L87 Difference]: Start difference. First operand 305 states and 472 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 14:16:09,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:16:09,579 INFO L93 Difference]: Finished difference Result 585 states and 909 transitions. [2024-11-18 14:16:09,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:16:09,580 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 97 [2024-11-18 14:16:09,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:16:09,582 INFO L225 Difference]: With dead ends: 585 [2024-11-18 14:16:09,582 INFO L226 Difference]: Without dead ends: 305 [2024-11-18 14:16:09,583 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 14:16:09,584 INFO L432 NwaCegarLoop]: 377 mSDtfsCounter, 2 mSDsluCounter, 1114 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1491 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:16:09,585 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1491 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:16:09,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2024-11-18 14:16:09,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2024-11-18 14:16:09,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 237 states have (on average 1.5485232067510548) internal successors, (367), 242 states have internal predecessors, (367), 50 states have call successors, (50), 15 states have call predecessors, (50), 17 states have return successors, (54), 49 states have call predecessors, (54), 49 states have call successors, (54) [2024-11-18 14:16:09,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 471 transitions. [2024-11-18 14:16:09,599 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 471 transitions. Word has length 97 [2024-11-18 14:16:09,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:16:09,600 INFO L471 AbstractCegarLoop]: Abstraction has 305 states and 471 transitions. [2024-11-18 14:16:09,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 14:16:09,600 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 471 transitions. [2024-11-18 14:16:09,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-18 14:16:09,602 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:16:09,602 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2024-11-18 14:16:09,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 14:16:09,603 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:16:09,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:16:09,603 INFO L85 PathProgramCache]: Analyzing trace with hash 822650886, now seen corresponding path program 3 times [2024-11-18 14:16:09,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:16:09,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163726400] [2024-11-18 14:16:09,604 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 14:16:09,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:16:09,630 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-18 14:16:09,630 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:16:09,720 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-18 14:16:09,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:16:09,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163726400] [2024-11-18 14:16:09,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163726400] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:16:09,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:16:09,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:16:09,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465115415] [2024-11-18 14:16:09,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:16:09,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:16:09,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:16:09,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:16:09,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:16:09,723 INFO L87 Difference]: Start difference. First operand 305 states and 471 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 14:16:09,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:16:09,740 INFO L93 Difference]: Finished difference Result 456 states and 686 transitions. [2024-11-18 14:16:09,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:16:09,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 98 [2024-11-18 14:16:09,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:16:09,744 INFO L225 Difference]: With dead ends: 456 [2024-11-18 14:16:09,746 INFO L226 Difference]: Without dead ends: 354 [2024-11-18 14:16:09,747 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 14:16:09,747 INFO L432 NwaCegarLoop]: 385 mSDtfsCounter, 279 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 518 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 14:16:09,748 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 518 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:16:09,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2024-11-18 14:16:09,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 354. [2024-11-18 14:16:09,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 277 states have (on average 1.5487364620938628) internal successors, (429), 282 states have internal predecessors, (429), 54 states have call successors, (54), 21 states have call predecessors, (54), 22 states have return successors, (58), 53 states have call predecessors, (58), 53 states have call successors, (58) [2024-11-18 14:16:09,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 541 transitions. [2024-11-18 14:16:09,770 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 541 transitions. Word has length 98 [2024-11-18 14:16:09,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:16:09,770 INFO L471 AbstractCegarLoop]: Abstraction has 354 states and 541 transitions. [2024-11-18 14:16:09,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 14:16:09,771 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 541 transitions. [2024-11-18 14:16:09,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-18 14:16:09,773 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:16:09,773 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-18 14:16:09,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 14:16:09,774 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:16:09,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:16:09,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1678121645, now seen corresponding path program 1 times [2024-11-18 14:16:09,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:16:09,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305855568] [2024-11-18 14:16:09,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:16:09,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:16:09,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:16:09,965 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-18 14:16:09,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:16:09,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305855568] [2024-11-18 14:16:09,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305855568] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:16:09,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:16:09,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:16:09,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866653649] [2024-11-18 14:16:09,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:16:09,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:16:09,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:16:09,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:16:09,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:16:09,967 INFO L87 Difference]: Start difference. First operand 354 states and 541 transitions. Second operand has 5 states, 4 states have (on average 23.75) internal successors, (95), 5 states have internal predecessors, (95), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-18 14:16:10,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:16:10,009 INFO L93 Difference]: Finished difference Result 687 states and 1055 transitions. [2024-11-18 14:16:10,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:16:10,009 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 23.75) internal successors, (95), 5 states have internal predecessors, (95), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 152 [2024-11-18 14:16:10,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:16:10,012 INFO L225 Difference]: With dead ends: 687 [2024-11-18 14:16:10,012 INFO L226 Difference]: Without dead ends: 356 [2024-11-18 14:16:10,013 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 14:16:10,014 INFO L432 NwaCegarLoop]: 379 mSDtfsCounter, 1 mSDsluCounter, 1125 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1504 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 14:16:10,014 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1504 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:16:10,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2024-11-18 14:16:10,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2024-11-18 14:16:10,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 278 states have (on average 1.5467625899280575) internal successors, (430), 284 states have internal predecessors, (430), 54 states have call successors, (54), 21 states have call predecessors, (54), 23 states have return successors, (60), 53 states have call predecessors, (60), 53 states have call successors, (60) [2024-11-18 14:16:10,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 544 transitions. [2024-11-18 14:16:10,030 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 544 transitions. Word has length 152 [2024-11-18 14:16:10,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:16:10,031 INFO L471 AbstractCegarLoop]: Abstraction has 356 states and 544 transitions. [2024-11-18 14:16:10,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 23.75) internal successors, (95), 5 states have internal predecessors, (95), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-18 14:16:10,031 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 544 transitions. [2024-11-18 14:16:10,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-18 14:16:10,034 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:16:10,034 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-18 14:16:10,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 14:16:10,034 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:16:10,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:16:10,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1982212967, now seen corresponding path program 1 times [2024-11-18 14:16:10,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:16:10,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729288659] [2024-11-18 14:16:10,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:16:10,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:16:10,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:16:10,227 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-18 14:16:10,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:16:10,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729288659] [2024-11-18 14:16:10,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729288659] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:16:10,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:16:10,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 14:16:10,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238076489] [2024-11-18 14:16:10,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:16:10,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 14:16:10,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:16:10,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 14:16:10,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:16:10,230 INFO L87 Difference]: Start difference. First operand 356 states and 544 transitions. Second operand has 8 states, 7 states have (on average 14.285714285714286) internal successors, (100), 8 states have internal predecessors, (100), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-18 14:16:10,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:16:10,372 INFO L93 Difference]: Finished difference Result 692 states and 1064 transitions. [2024-11-18 14:16:10,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 14:16:10,373 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 14.285714285714286) internal successors, (100), 8 states have internal predecessors, (100), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 153 [2024-11-18 14:16:10,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:16:10,376 INFO L225 Difference]: With dead ends: 692 [2024-11-18 14:16:10,376 INFO L226 Difference]: Without dead ends: 361 [2024-11-18 14:16:10,377 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 14:16:10,378 INFO L432 NwaCegarLoop]: 371 mSDtfsCounter, 5 mSDsluCounter, 2197 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2568 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 14:16:10,378 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2568 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:16:10,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2024-11-18 14:16:10,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 361. [2024-11-18 14:16:10,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 282 states have (on average 1.5425531914893618) internal successors, (435), 288 states have internal predecessors, (435), 54 states have call successors, (54), 22 states have call predecessors, (54), 24 states have return successors, (65), 53 states have call predecessors, (65), 53 states have call successors, (65) [2024-11-18 14:16:10,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 554 transitions. [2024-11-18 14:16:10,393 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 554 transitions. Word has length 153 [2024-11-18 14:16:10,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:16:10,394 INFO L471 AbstractCegarLoop]: Abstraction has 361 states and 554 transitions. [2024-11-18 14:16:10,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 14.285714285714286) internal successors, (100), 8 states have internal predecessors, (100), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-18 14:16:10,394 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 554 transitions. [2024-11-18 14:16:10,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-18 14:16:10,397 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:16:10,397 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-18 14:16:10,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 14:16:10,397 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:16:10,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:16:10,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1985766572, now seen corresponding path program 1 times [2024-11-18 14:16:10,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:16:10,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008684396] [2024-11-18 14:16:10,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:16:10,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:16:10,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:16:10,533 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-18 14:16:10,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:16:10,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008684396] [2024-11-18 14:16:10,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008684396] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:16:10,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386735569] [2024-11-18 14:16:10,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:16:10,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:16:10,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:16:10,535 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 14:16:10,537 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 14:16:10,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:16:10,837 INFO L255 TraceCheckSpWp]: Trace formula consists of 1173 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:16:10,841 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:16:10,863 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-18 14:16:10,863 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:16:10,985 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-18 14:16:10,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386735569] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:16:10,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:16:10,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-18 14:16:10,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773920702] [2024-11-18 14:16:10,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:16:10,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:16:10,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:16:10,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:16:10,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:16:10,988 INFO L87 Difference]: Start difference. First operand 361 states and 554 transitions. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-18 14:16:11,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:16:11,147 INFO L93 Difference]: Finished difference Result 844 states and 1342 transitions. [2024-11-18 14:16:11,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:16:11,148 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 154 [2024-11-18 14:16:11,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:16:11,153 INFO L225 Difference]: With dead ends: 844 [2024-11-18 14:16:11,153 INFO L226 Difference]: Without dead ends: 688 [2024-11-18 14:16:11,155 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 305 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 14:16:11,155 INFO L432 NwaCegarLoop]: 413 mSDtfsCounter, 466 mSDsluCounter, 1371 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 1784 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:16:11,156 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [511 Valid, 1784 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:16:11,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2024-11-18 14:16:11,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 664. [2024-11-18 14:16:11,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 521 states have (on average 1.598848368522073) internal successors, (833), 527 states have internal predecessors, (833), 118 states have call successors, (118), 22 states have call predecessors, (118), 24 states have return successors, (139), 117 states have call predecessors, (139), 117 states have call successors, (139) [2024-11-18 14:16:11,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 1090 transitions. [2024-11-18 14:16:11,192 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 1090 transitions. Word has length 154 [2024-11-18 14:16:11,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:16:11,193 INFO L471 AbstractCegarLoop]: Abstraction has 664 states and 1090 transitions. [2024-11-18 14:16:11,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-18 14:16:11,193 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 1090 transitions. [2024-11-18 14:16:11,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-18 14:16:11,198 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:16:11,198 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2024-11-18 14:16:11,220 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 14:16:11,399 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 14:16:11,399 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:16:11,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:16:11,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1798339657, now seen corresponding path program 1 times [2024-11-18 14:16:11,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:16:11,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639276184] [2024-11-18 14:16:11,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:16:11,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:16:11,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:16:11,482 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-18 14:16:11,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:16:11,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639276184] [2024-11-18 14:16:11,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639276184] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:16:11,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:16:11,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:16:11,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126070546] [2024-11-18 14:16:11,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:16:11,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:16:11,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:16:11,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:16:11,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:16:11,485 INFO L87 Difference]: Start difference. First operand 664 states and 1090 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:16:11,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:16:11,526 INFO L93 Difference]: Finished difference Result 1565 states and 2608 transitions. [2024-11-18 14:16:11,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:16:11,527 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 160 [2024-11-18 14:16:11,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:16:11,533 INFO L225 Difference]: With dead ends: 1565 [2024-11-18 14:16:11,534 INFO L226 Difference]: Without dead ends: 972 [2024-11-18 14:16:11,536 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 14:16:11,537 INFO L432 NwaCegarLoop]: 397 mSDtfsCounter, 97 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 779 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 14:16:11,537 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 779 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:16:11,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2024-11-18 14:16:11,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 964. [2024-11-18 14:16:11,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 964 states, 757 states have (on average 1.608982826948481) internal successors, (1218), 763 states have internal predecessors, (1218), 182 states have call successors, (182), 22 states have call predecessors, (182), 24 states have return successors, (213), 181 states have call predecessors, (213), 181 states have call successors, (213) [2024-11-18 14:16:11,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 1613 transitions. [2024-11-18 14:16:11,606 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 1613 transitions. Word has length 160 [2024-11-18 14:16:11,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:16:11,606 INFO L471 AbstractCegarLoop]: Abstraction has 964 states and 1613 transitions. [2024-11-18 14:16:11,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:16:11,607 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 1613 transitions. [2024-11-18 14:16:11,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-18 14:16:11,613 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:16:11,614 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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 14:16:11,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 14:16:11,614 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:16:11,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:16:11,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1536421008, now seen corresponding path program 1 times [2024-11-18 14:16:11,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:16:11,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976337484] [2024-11-18 14:16:11,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:16:11,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:16:11,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:16:11,690 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-18 14:16:11,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:16:11,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976337484] [2024-11-18 14:16:11,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976337484] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:16:11,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:16:11,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:16:11,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044942689] [2024-11-18 14:16:11,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:16:11,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:16:11,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:16:11,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:16:11,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:16:11,693 INFO L87 Difference]: Start difference. First operand 964 states and 1613 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:16:11,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:16:11,751 INFO L93 Difference]: Finished difference Result 2280 states and 3837 transitions. [2024-11-18 14:16:11,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:16:11,752 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 161 [2024-11-18 14:16:11,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:16:11,762 INFO L225 Difference]: With dead ends: 2280 [2024-11-18 14:16:11,762 INFO L226 Difference]: Without dead ends: 1440 [2024-11-18 14:16:11,766 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 14:16:11,767 INFO L432 NwaCegarLoop]: 384 mSDtfsCounter, 95 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 762 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 14:16:11,768 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 762 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:16:11,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1440 states. [2024-11-18 14:16:11,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1440 to 1432. [2024-11-18 14:16:11,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1130 states have (on average 1.6150442477876106) internal successors, (1825), 1136 states have internal predecessors, (1825), 277 states have call successors, (277), 22 states have call predecessors, (277), 24 states have return successors, (308), 276 states have call predecessors, (308), 276 states have call successors, (308) [2024-11-18 14:16:11,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 2410 transitions. [2024-11-18 14:16:11,848 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 2410 transitions. Word has length 161 [2024-11-18 14:16:11,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:16:11,848 INFO L471 AbstractCegarLoop]: Abstraction has 1432 states and 2410 transitions. [2024-11-18 14:16:11,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:16:11,849 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 2410 transitions. [2024-11-18 14:16:11,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-11-18 14:16:11,858 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:16:11,858 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2024-11-18 14:16:11,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 14:16:11,859 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:16:11,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:16:11,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1645615029, now seen corresponding path program 1 times [2024-11-18 14:16:11,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:16:11,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497995153] [2024-11-18 14:16:11,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:16:11,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:16:11,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:16:11,940 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-18 14:16:11,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:16:11,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497995153] [2024-11-18 14:16:11,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497995153] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:16:11,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:16:11,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:16:11,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346997216] [2024-11-18 14:16:11,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:16:11,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:16:11,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:16:11,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:16:11,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:16:11,943 INFO L87 Difference]: Start difference. First operand 1432 states and 2410 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:16:12,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:16:12,042 INFO L93 Difference]: Finished difference Result 3327 states and 5644 transitions. [2024-11-18 14:16:12,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:16:12,042 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 162 [2024-11-18 14:16:12,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:16:12,061 INFO L225 Difference]: With dead ends: 3327 [2024-11-18 14:16:12,061 INFO L226 Difference]: Without dead ends: 2144 [2024-11-18 14:16:12,067 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 14:16:12,068 INFO L432 NwaCegarLoop]: 384 mSDtfsCounter, 93 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 759 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 14:16:12,068 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 759 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:16:12,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2144 states. [2024-11-18 14:16:12,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2144 to 2136. [2024-11-18 14:16:12,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2136 states, 1711 states have (on average 1.6201052016364699) internal successors, (2772), 1717 states have internal predecessors, (2772), 400 states have call successors, (400), 22 states have call predecessors, (400), 24 states have return successors, (447), 399 states have call predecessors, (447), 399 states have call successors, (447) [2024-11-18 14:16:12,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2136 states to 2136 states and 3619 transitions. [2024-11-18 14:16:12,203 INFO L78 Accepts]: Start accepts. Automaton has 2136 states and 3619 transitions. Word has length 162 [2024-11-18 14:16:12,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:16:12,203 INFO L471 AbstractCegarLoop]: Abstraction has 2136 states and 3619 transitions. [2024-11-18 14:16:12,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:16:12,204 INFO L276 IsEmpty]: Start isEmpty. Operand 2136 states and 3619 transitions. [2024-11-18 14:16:12,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-18 14:16:12,219 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:16:12,219 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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 14:16:12,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 14:16:12,219 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:16:12,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:16:12,220 INFO L85 PathProgramCache]: Analyzing trace with hash 2080668655, now seen corresponding path program 1 times [2024-11-18 14:16:12,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:16:12,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529356514] [2024-11-18 14:16:12,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:16:12,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:16:12,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:16:12,296 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-18 14:16:12,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:16:12,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529356514] [2024-11-18 14:16:12,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529356514] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:16:12,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:16:12,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:16:12,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769072043] [2024-11-18 14:16:12,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:16:12,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:16:12,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:16:12,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:16:12,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:16:12,299 INFO L87 Difference]: Start difference. First operand 2136 states and 3619 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:16:12,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:16:12,476 INFO L93 Difference]: Finished difference Result 4946 states and 8441 transitions. [2024-11-18 14:16:12,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:16:12,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 163 [2024-11-18 14:16:12,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:16:12,499 INFO L225 Difference]: With dead ends: 4946 [2024-11-18 14:16:12,499 INFO L226 Difference]: Without dead ends: 3263 [2024-11-18 14:16:12,507 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 14:16:12,508 INFO L432 NwaCegarLoop]: 384 mSDtfsCounter, 91 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 759 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 14:16:12,508 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 759 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:16:12,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3263 states. [2024-11-18 14:16:12,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3263 to 3255. [2024-11-18 14:16:12,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3255 states, 2651 states have (on average 1.6231610712938513) internal successors, (4303), 2657 states have internal predecessors, (4303), 579 states have call successors, (579), 22 states have call predecessors, (579), 24 states have return successors, (652), 578 states have call predecessors, (652), 578 states have call successors, (652) [2024-11-18 14:16:12,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3255 states to 3255 states and 5534 transitions. [2024-11-18 14:16:12,710 INFO L78 Accepts]: Start accepts. Automaton has 3255 states and 5534 transitions. Word has length 163 [2024-11-18 14:16:12,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:16:12,711 INFO L471 AbstractCegarLoop]: Abstraction has 3255 states and 5534 transitions. [2024-11-18 14:16:12,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:16:12,711 INFO L276 IsEmpty]: Start isEmpty. Operand 3255 states and 5534 transitions. [2024-11-18 14:16:12,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-18 14:16:12,732 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:16:12,732 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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, 1] [2024-11-18 14:16:12,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 14:16:12,732 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:16:12,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:16:12,733 INFO L85 PathProgramCache]: Analyzing trace with hash 686721369, now seen corresponding path program 1 times [2024-11-18 14:16:12,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:16:12,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850280774] [2024-11-18 14:16:12,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:16:12,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:16:12,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:16:12,811 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-18 14:16:12,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:16:12,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850280774] [2024-11-18 14:16:12,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850280774] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:16:12,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:16:12,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:16:12,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111686978] [2024-11-18 14:16:12,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:16:12,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:16:12,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:16:12,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:16:12,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:16:12,814 INFO L87 Difference]: Start difference. First operand 3255 states and 5534 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:16:13,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:16:13,000 INFO L93 Difference]: Finished difference Result 7864 states and 13440 transitions. [2024-11-18 14:16:13,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:16:13,001 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 164 [2024-11-18 14:16:13,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:16:13,038 INFO L225 Difference]: With dead ends: 7864 [2024-11-18 14:16:13,038 INFO L226 Difference]: Without dead ends: 5294 [2024-11-18 14:16:13,052 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 14:16:13,054 INFO L432 NwaCegarLoop]: 394 mSDtfsCounter, 89 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 775 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 14:16:13,054 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 775 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:16:13,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5294 states. [2024-11-18 14:16:13,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5294 to 5286. [2024-11-18 14:16:13,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5286 states, 4306 states have (on average 1.6151881096144913) internal successors, (6955), 4312 states have internal predecessors, (6955), 955 states have call successors, (955), 22 states have call predecessors, (955), 24 states have return successors, (1072), 954 states have call predecessors, (1072), 954 states have call successors, (1072) [2024-11-18 14:16:13,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5286 states to 5286 states and 8982 transitions. [2024-11-18 14:16:13,410 INFO L78 Accepts]: Start accepts. Automaton has 5286 states and 8982 transitions. Word has length 164 [2024-11-18 14:16:13,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:16:13,410 INFO L471 AbstractCegarLoop]: Abstraction has 5286 states and 8982 transitions. [2024-11-18 14:16:13,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:16:13,411 INFO L276 IsEmpty]: Start isEmpty. Operand 5286 states and 8982 transitions. [2024-11-18 14:16:13,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-18 14:16:13,444 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:16:13,444 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1] [2024-11-18 14:16:13,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 14:16:13,444 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:16:13,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:16:13,445 INFO L85 PathProgramCache]: Analyzing trace with hash -610180533, now seen corresponding path program 1 times [2024-11-18 14:16:13,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:16:13,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077686312] [2024-11-18 14:16:13,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:16:13,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:16:13,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:16:13,533 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-18 14:16:13,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:16:13,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077686312] [2024-11-18 14:16:13,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077686312] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:16:13,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:16:13,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:16:13,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378899129] [2024-11-18 14:16:13,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:16:13,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:16:13,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:16:13,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:16:13,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:16:13,536 INFO L87 Difference]: Start difference. First operand 5286 states and 8982 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:16:13,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:16:13,823 INFO L93 Difference]: Finished difference Result 13006 states and 22238 transitions. [2024-11-18 14:16:13,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:16:13,823 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 165 [2024-11-18 14:16:13,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:16:13,879 INFO L225 Difference]: With dead ends: 13006 [2024-11-18 14:16:13,879 INFO L226 Difference]: Without dead ends: 8782 [2024-11-18 14:16:13,900 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 14:16:13,901 INFO L432 NwaCegarLoop]: 388 mSDtfsCounter, 87 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 766 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 14:16:13,901 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 766 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:16:13,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8782 states. [2024-11-18 14:16:14,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8782 to 8774. [2024-11-18 14:16:14,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8774 states, 7188 states have (on average 1.6122704507512522) internal successors, (11589), 7194 states have internal predecessors, (11589), 1561 states have call successors, (1561), 22 states have call predecessors, (1561), 24 states have return successors, (1756), 1560 states have call predecessors, (1756), 1560 states have call successors, (1756) [2024-11-18 14:16:14,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8774 states to 8774 states and 14906 transitions. [2024-11-18 14:16:14,492 INFO L78 Accepts]: Start accepts. Automaton has 8774 states and 14906 transitions. Word has length 165 [2024-11-18 14:16:14,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:16:14,493 INFO L471 AbstractCegarLoop]: Abstraction has 8774 states and 14906 transitions. [2024-11-18 14:16:14,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:16:14,494 INFO L276 IsEmpty]: Start isEmpty. Operand 8774 states and 14906 transitions. [2024-11-18 14:16:14,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-18 14:16:14,552 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:16:14,553 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1] [2024-11-18 14:16:14,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-18 14:16:14,553 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:16:14,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:16:14,555 INFO L85 PathProgramCache]: Analyzing trace with hash 166608759, now seen corresponding path program 1 times [2024-11-18 14:16:14,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:16:14,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355604320] [2024-11-18 14:16:14,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:16:14,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:16:14,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:16:14,635 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-18 14:16:14,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:16:14,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355604320] [2024-11-18 14:16:14,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355604320] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:16:14,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:16:14,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:16:14,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60714097] [2024-11-18 14:16:14,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:16:14,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:16:14,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:16:14,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:16:14,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:16:14,638 INFO L87 Difference]: Start difference. First operand 8774 states and 14906 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:16:15,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:16:15,055 INFO L93 Difference]: Finished difference Result 22665 states and 38663 transitions. [2024-11-18 14:16:15,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:16:15,056 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 166 [2024-11-18 14:16:15,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:16:15,155 INFO L225 Difference]: With dead ends: 22665 [2024-11-18 14:16:15,156 INFO L226 Difference]: Without dead ends: 15375 [2024-11-18 14:16:15,195 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 14:16:15,195 INFO L432 NwaCegarLoop]: 394 mSDtfsCounter, 85 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 775 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 14:16:15,195 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 775 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:16:15,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15375 states. [2024-11-18 14:16:15,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15375 to 15367. [2024-11-18 14:16:15,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15367 states, 12578 states have (on average 1.6024010176498649) internal successors, (20155), 12584 states have internal predecessors, (20155), 2764 states have call successors, (2764), 22 states have call predecessors, (2764), 24 states have return successors, (3103), 2763 states have call predecessors, (3103), 2763 states have call successors, (3103) [2024-11-18 14:16:16,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15367 states to 15367 states and 26022 transitions. [2024-11-18 14:16:16,050 INFO L78 Accepts]: Start accepts. Automaton has 15367 states and 26022 transitions. Word has length 166 [2024-11-18 14:16:16,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:16:16,052 INFO L471 AbstractCegarLoop]: Abstraction has 15367 states and 26022 transitions. [2024-11-18 14:16:16,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:16:16,053 INFO L276 IsEmpty]: Start isEmpty. Operand 15367 states and 26022 transitions. [2024-11-18 14:16:16,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-18 14:16:16,127 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:16:16,127 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1] [2024-11-18 14:16:16,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-18 14:16:16,127 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:16:16,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:16:16,128 INFO L85 PathProgramCache]: Analyzing trace with hash -2030999030, now seen corresponding path program 1 times [2024-11-18 14:16:16,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:16:16,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131497618] [2024-11-18 14:16:16,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:16:16,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:16:16,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:16:16,215 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-18 14:16:16,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:16:16,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131497618] [2024-11-18 14:16:16,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131497618] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:16:16,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:16:16,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:16:16,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144233507] [2024-11-18 14:16:16,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:16:16,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:16:16,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:16:16,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:16:16,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:16:16,219 INFO L87 Difference]: Start difference. First operand 15367 states and 26022 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:16:17,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:16:17,361 INFO L93 Difference]: Finished difference Result 40621 states and 69106 transitions. [2024-11-18 14:16:17,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:16:17,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 167 [2024-11-18 14:16:17,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:16:17,512 INFO L225 Difference]: With dead ends: 40621 [2024-11-18 14:16:17,512 INFO L226 Difference]: Without dead ends: 27345 [2024-11-18 14:16:17,568 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 14:16:17,569 INFO L432 NwaCegarLoop]: 384 mSDtfsCounter, 83 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 762 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 14:16:17,569 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 762 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:16:17,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27345 states. [2024-11-18 14:16:19,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27345 to 27337. [2024-11-18 14:16:19,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27337 states, 22509 states have (on average 1.5977164689679684) internal successors, (35963), 22515 states have internal predecessors, (35963), 4803 states have call successors, (4803), 22 states have call predecessors, (4803), 24 states have return successors, (5416), 4802 states have call predecessors, (5416), 4802 states have call successors, (5416) [2024-11-18 14:16:19,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27337 states to 27337 states and 46182 transitions. [2024-11-18 14:16:19,290 INFO L78 Accepts]: Start accepts. Automaton has 27337 states and 46182 transitions. Word has length 167 [2024-11-18 14:16:19,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:16:19,291 INFO L471 AbstractCegarLoop]: Abstraction has 27337 states and 46182 transitions. [2024-11-18 14:16:19,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:16:19,291 INFO L276 IsEmpty]: Start isEmpty. Operand 27337 states and 46182 transitions. [2024-11-18 14:16:19,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-18 14:16:19,387 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:16:19,388 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2024-11-18 14:16:19,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-18 14:16:19,388 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:16:19,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:16:19,389 INFO L85 PathProgramCache]: Analyzing trace with hash 576227637, now seen corresponding path program 1 times [2024-11-18 14:16:19,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:16:19,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483987647] [2024-11-18 14:16:19,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:16:19,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:16:19,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:16:19,468 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-18 14:16:19,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:16:19,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483987647] [2024-11-18 14:16:19,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483987647] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:16:19,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:16:19,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:16:19,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381696160] [2024-11-18 14:16:19,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:16:19,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:16:19,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:16:19,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:16:19,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:16:19,472 INFO L87 Difference]: Start difference. First operand 27337 states and 46182 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:16:21,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:16:21,150 INFO L93 Difference]: Finished difference Result 74408 states and 126173 transitions. [2024-11-18 14:16:21,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:16:21,151 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 168 [2024-11-18 14:16:21,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:16:21,473 INFO L225 Difference]: With dead ends: 74408 [2024-11-18 14:16:21,474 INFO L226 Difference]: Without dead ends: 49894 [2024-11-18 14:16:21,591 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 14:16:21,592 INFO L432 NwaCegarLoop]: 386 mSDtfsCounter, 81 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 764 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 14:16:21,593 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 764 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:16:21,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49894 states. [2024-11-18 14:16:24,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49894 to 49886. [2024-11-18 14:16:24,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49886 states, 41343 states have (on average 1.5916600149964928) internal successors, (65804), 41349 states have internal predecessors, (65804), 8518 states have call successors, (8518), 22 states have call predecessors, (8518), 24 states have return successors, (9663), 8517 states have call predecessors, (9663), 8517 states have call successors, (9663) [2024-11-18 14:16:24,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49886 states to 49886 states and 83985 transitions. [2024-11-18 14:16:24,602 INFO L78 Accepts]: Start accepts. Automaton has 49886 states and 83985 transitions. Word has length 168 [2024-11-18 14:16:24,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:16:24,603 INFO L471 AbstractCegarLoop]: Abstraction has 49886 states and 83985 transitions. [2024-11-18 14:16:24,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:16:24,604 INFO L276 IsEmpty]: Start isEmpty. Operand 49886 states and 83985 transitions. [2024-11-18 14:16:24,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-18 14:16:24,730 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:16:24,730 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2024-11-18 14:16:24,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-18 14:16:24,730 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:16:24,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:16:24,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1428261622, now seen corresponding path program 1 times [2024-11-18 14:16:24,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:16:24,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603120568] [2024-11-18 14:16:24,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:16:24,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:16:24,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:16:25,178 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-18 14:16:25,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:16:25,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603120568] [2024-11-18 14:16:25,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603120568] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:16:25,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:16:25,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:16:25,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298991350] [2024-11-18 14:16:25,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:16:25,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:16:25,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:16:25,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:16:25,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:16:25,180 INFO L87 Difference]: Start difference. First operand 49886 states and 83985 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:16:27,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:16:27,708 INFO L93 Difference]: Finished difference Result 92894 states and 156735 transitions. [2024-11-18 14:16:27,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:16:27,709 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 169 [2024-11-18 14:16:27,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:16:28,240 INFO L225 Difference]: With dead ends: 92894 [2024-11-18 14:16:28,241 INFO L226 Difference]: Without dead ends: 92738 [2024-11-18 14:16:28,302 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 14:16:28,303 INFO L432 NwaCegarLoop]: 386 mSDtfsCounter, 76 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 768 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 14:16:28,303 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 768 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:16:28,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92738 states. [2024-11-18 14:16:32,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92738 to 92730. [2024-11-18 14:16:32,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92730 states, 77388 states have (on average 1.584095725435468) internal successors, (122590), 77394 states have internal predecessors, (122590), 15317 states have call successors, (15317), 22 states have call predecessors, (15317), 24 states have return successors, (17508), 15316 states have call predecessors, (17508), 15316 states have call successors, (17508) [2024-11-18 14:16:32,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92730 states to 92730 states and 155415 transitions. [2024-11-18 14:16:32,544 INFO L78 Accepts]: Start accepts. Automaton has 92730 states and 155415 transitions. Word has length 169 [2024-11-18 14:16:32,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:16:32,544 INFO L471 AbstractCegarLoop]: Abstraction has 92730 states and 155415 transitions. [2024-11-18 14:16:32,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:16:32,545 INFO L276 IsEmpty]: Start isEmpty. Operand 92730 states and 155415 transitions. [2024-11-18 14:16:32,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-18 14:16:32,734 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:16:32,734 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:16:32,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-18 14:16:32,735 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:16:32,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:16:32,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1748754934, now seen corresponding path program 1 times [2024-11-18 14:16:32,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:16:32,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494383988] [2024-11-18 14:16:32,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:16:32,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:16:33,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:16:34,111 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-18 14:16:34,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:16:34,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494383988] [2024-11-18 14:16:34,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494383988] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:16:34,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753437260] [2024-11-18 14:16:34,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:16:34,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:16:34,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:16:34,114 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 14:16:34,115 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 14:16:34,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:16:34,488 INFO L255 TraceCheckSpWp]: Trace formula consists of 1224 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-18 14:16:34,494 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:16:35,174 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 55 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-18 14:16:35,175 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:16:36,070 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-18 14:16:36,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753437260] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:16:36,071 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:16:36,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 12] total 32 [2024-11-18 14:16:36,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857112076] [2024-11-18 14:16:36,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:16:36,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-18 14:16:36,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:16:36,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-18 14:16:36,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=849, Unknown=0, NotChecked=0, Total=992 [2024-11-18 14:16:36,074 INFO L87 Difference]: Start difference. First operand 92730 states and 155415 transitions. Second operand has 32 states, 32 states have (on average 9.28125) internal successors, (297), 29 states have internal predecessors, (297), 17 states have call successors, (45), 5 states have call predecessors, (45), 13 states have return successors, (45), 19 states have call predecessors, (45), 17 states have call successors, (45) [2024-11-18 14:16:41,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:16:41,981 INFO L93 Difference]: Finished difference Result 185087 states and 315634 transitions. [2024-11-18 14:16:41,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-18 14:16:41,982 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 9.28125) internal successors, (297), 29 states have internal predecessors, (297), 17 states have call successors, (45), 5 states have call predecessors, (45), 13 states have return successors, (45), 19 states have call predecessors, (45), 17 states have call successors, (45) Word has length 170 [2024-11-18 14:16:41,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:16:43,571 INFO L225 Difference]: With dead ends: 185087 [2024-11-18 14:16:43,572 INFO L226 Difference]: Without dead ends: 184948 [2024-11-18 14:16:43,676 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=434, Invalid=2218, Unknown=0, NotChecked=0, Total=2652 [2024-11-18 14:16:43,677 INFO L432 NwaCegarLoop]: 627 mSDtfsCounter, 1712 mSDsluCounter, 6946 mSDsCounter, 0 mSdLazyCounter, 1888 mSolverCounterSat, 384 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1715 SdHoareTripleChecker+Valid, 7573 SdHoareTripleChecker+Invalid, 2272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 384 IncrementalHoareTripleChecker+Valid, 1888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-18 14:16:43,678 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1715 Valid, 7573 Invalid, 2272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [384 Valid, 1888 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-18 14:16:43,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184948 states. [2024-11-18 14:16:50,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184948 to 184848. [2024-11-18 14:16:50,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184848 states, 154334 states have (on average 1.5849521168375083) internal successors, (244612), 154241 states have internal predecessors, (244612), 30436 states have call successors, (30436), 69 states have call predecessors, (30436), 77 states have return successors, (38094), 30549 states have call predecessors, (38094), 30432 states have call successors, (38094) [2024-11-18 14:16:52,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184848 states to 184848 states and 313142 transitions. [2024-11-18 14:16:52,500 INFO L78 Accepts]: Start accepts. Automaton has 184848 states and 313142 transitions. Word has length 170 [2024-11-18 14:16:52,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:16:52,501 INFO L471 AbstractCegarLoop]: Abstraction has 184848 states and 313142 transitions. [2024-11-18 14:16:52,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 9.28125) internal successors, (297), 29 states have internal predecessors, (297), 17 states have call successors, (45), 5 states have call predecessors, (45), 13 states have return successors, (45), 19 states have call predecessors, (45), 17 states have call successors, (45) [2024-11-18 14:16:52,502 INFO L276 IsEmpty]: Start isEmpty. Operand 184848 states and 313142 transitions. [2024-11-18 14:16:52,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-18 14:16:52,896 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:16:52,896 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:16:52,924 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-18 14:16:53,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:16:53,097 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:16:53,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:16:53,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1287891028, now seen corresponding path program 1 times [2024-11-18 14:16:53,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:16:53,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29173693] [2024-11-18 14:16:53,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:16:53,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:16:53,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:16:53,268 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-18 14:16:53,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:16:53,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29173693] [2024-11-18 14:16:53,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29173693] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:16:53,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:16:53,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:16:53,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826039049] [2024-11-18 14:16:53,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:16:53,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:16:53,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:16:53,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:16:53,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:16:53,270 INFO L87 Difference]: Start difference. First operand 184848 states and 313142 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-18 14:16:57,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:16:57,591 INFO L93 Difference]: Finished difference Result 185249 states and 313699 transitions. [2024-11-18 14:16:57,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:16:57,591 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 171 [2024-11-18 14:16:57,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:16:58,789 INFO L225 Difference]: With dead ends: 185249 [2024-11-18 14:16:58,789 INFO L226 Difference]: Without dead ends: 184729 [2024-11-18 14:16:58,858 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:16:58,859 INFO L432 NwaCegarLoop]: 379 mSDtfsCounter, 2 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:16:58,859 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1134 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:16:58,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184729 states. [2024-11-18 14:17:05,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184729 to 184729. [2024-11-18 14:17:05,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184729 states, 154238 states have (on average 1.5849920253115315) internal successors, (244466), 154143 states have internal predecessors, (244466), 30423 states have call successors, (30423), 61 states have call predecessors, (30423), 67 states have return successors, (38078), 30534 states have call predecessors, (38078), 30420 states have call successors, (38078) [2024-11-18 14:17:06,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184729 states to 184729 states and 312967 transitions. [2024-11-18 14:17:06,588 INFO L78 Accepts]: Start accepts. Automaton has 184729 states and 312967 transitions. Word has length 171 [2024-11-18 14:17:06,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:17:06,588 INFO L471 AbstractCegarLoop]: Abstraction has 184729 states and 312967 transitions. [2024-11-18 14:17:06,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-18 14:17:06,589 INFO L276 IsEmpty]: Start isEmpty. Operand 184729 states and 312967 transitions. [2024-11-18 14:17:06,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-18 14:17:06,888 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:17:06,889 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:17:06,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-18 14:17:06,889 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:17:06,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:17:06,891 INFO L85 PathProgramCache]: Analyzing trace with hash -2067308859, now seen corresponding path program 1 times [2024-11-18 14:17:06,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:17:06,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643290344] [2024-11-18 14:17:06,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:17:06,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:17:06,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:17:07,093 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-18 14:17:07,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:17:07,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643290344] [2024-11-18 14:17:07,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643290344] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:17:07,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:17:07,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 14:17:07,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650967940] [2024-11-18 14:17:07,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:17:07,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 14:17:07,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:17:07,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 14:17:07,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:17:07,096 INFO L87 Difference]: Start difference. First operand 184729 states and 312967 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 8 states have internal predecessors, (113), 5 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16)