./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec7_product28.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/email_spec7_product28.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 f29cc89d3ee64e709bcde3f8f1e5c1c29a2d05992b7eca470a9d177af894449a --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 14:14:15,642 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 14:14:15,683 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 14:14:15,687 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 14:14:15,689 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 14:14:15,714 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 14:14:15,715 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 14:14:15,715 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 14:14:15,716 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 14:14:15,716 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 14:14:15,716 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 14:14:15,716 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 14:14:15,717 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 14:14:15,717 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 14:14:15,717 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 14:14:15,718 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 14:14:15,718 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 14:14:15,718 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 14:14:15,718 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 14:14:15,719 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 14:14:15,719 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 14:14:15,719 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 14:14:15,720 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 14:14:15,720 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 14:14:15,720 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 14:14:15,720 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 14:14:15,721 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 14:14:15,721 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 14:14:15,721 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 14:14:15,721 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 14:14:15,721 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 14:14:15,722 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 14:14:15,722 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:14:15,722 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 14:14:15,722 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 14:14:15,722 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 14:14:15,723 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 14:14:15,723 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 14:14:15,723 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 14:14:15,723 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 14:14:15,723 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 14:14:15,726 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 14:14:15,726 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f29cc89d3ee64e709bcde3f8f1e5c1c29a2d05992b7eca470a9d177af894449a [2024-11-18 14:14:15,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 14:14:15,994 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 14:14:15,998 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 14:14:15,999 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 14:14:16,000 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 14:14:16,001 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec7_product28.cil.c [2024-11-18 14:14:17,316 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 14:14:17,622 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 14:14:17,624 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec7_product28.cil.c [2024-11-18 14:14:17,648 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/124288e30/9577b322cfc6487abe8015ff4ec55783/FLAG3ee518ea9 [2024-11-18 14:14:17,663 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/124288e30/9577b322cfc6487abe8015ff4ec55783 [2024-11-18 14:14:17,666 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 14:14:17,674 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 14:14:17,675 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 14:14:17,676 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 14:14:17,687 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 14:14:17,688 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:14:17" (1/1) ... [2024-11-18 14:14:17,689 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16c29624 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:14:17, skipping insertion in model container [2024-11-18 14:14:17,689 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:14:17" (1/1) ... [2024-11-18 14:14:17,736 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 14:14:17,889 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec7_product28.cil.c[1542,1555] [2024-11-18 14:14:18,227 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:14:18,245 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 14:14:18,254 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [48] [2024-11-18 14:14:18,256 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [57] [2024-11-18 14:14:18,256 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [217] [2024-11-18 14:14:18,257 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [255] [2024-11-18 14:14:18,257 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [591] [2024-11-18 14:14:18,257 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [871] [2024-11-18 14:14:18,257 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EncryptVerify_spec.i","") [1084] [2024-11-18 14:14:18,257 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1102] [2024-11-18 14:14:18,258 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [1468] [2024-11-18 14:14:18,258 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [1485] [2024-11-18 14:14:18,258 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [2554] [2024-11-18 14:14:18,261 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec7_product28.cil.c[1542,1555] [2024-11-18 14:14:18,338 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:14:18,378 INFO L204 MainTranslator]: Completed translation [2024-11-18 14:14:18,379 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:14:18 WrapperNode [2024-11-18 14:14:18,380 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 14:14:18,381 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 14:14:18,381 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 14:14:18,381 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 14:14:18,387 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:14:18" (1/1) ... [2024-11-18 14:14:18,409 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:14:18" (1/1) ... [2024-11-18 14:14:18,470 INFO L138 Inliner]: procedures = 128, calls = 195, calls flagged for inlining = 55, calls inlined = 45, statements flattened = 845 [2024-11-18 14:14:18,470 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 14:14:18,471 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 14:14:18,471 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 14:14:18,471 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 14:14:18,483 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:14:18" (1/1) ... [2024-11-18 14:14:18,483 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:14:18" (1/1) ... [2024-11-18 14:14:18,487 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:14:18" (1/1) ... [2024-11-18 14:14:18,515 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 4, 4, 4]. 29 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [2, 4, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0]. [2024-11-18 14:14:18,519 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:14:18" (1/1) ... [2024-11-18 14:14:18,520 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:14:18" (1/1) ... [2024-11-18 14:14:18,554 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:14:18" (1/1) ... [2024-11-18 14:14:18,564 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:14:18" (1/1) ... [2024-11-18 14:14:18,574 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:14:18" (1/1) ... [2024-11-18 14:14:18,597 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:14:18" (1/1) ... [2024-11-18 14:14:18,611 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 14:14:18,616 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 14:14:18,616 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 14:14:18,616 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 14:14:18,617 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:14:18" (1/1) ... [2024-11-18 14:14:18,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:14:18,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:14:18,666 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 14:14:18,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 14:14:18,716 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2024-11-18 14:14:18,717 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2024-11-18 14:14:18,717 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2024-11-18 14:14:18,717 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2024-11-18 14:14:18,717 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2024-11-18 14:14:18,717 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2024-11-18 14:14:18,717 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2024-11-18 14:14:18,718 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2024-11-18 14:14:18,718 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2024-11-18 14:14:18,719 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2024-11-18 14:14:18,719 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2024-11-18 14:14:18,719 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2024-11-18 14:14:18,719 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2024-11-18 14:14:18,719 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2024-11-18 14:14:18,720 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2024-11-18 14:14:18,720 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2024-11-18 14:14:18,720 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2024-11-18 14:14:18,720 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2024-11-18 14:14:18,720 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2024-11-18 14:14:18,720 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2024-11-18 14:14:18,720 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2024-11-18 14:14:18,721 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2024-11-18 14:14:18,722 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2024-11-18 14:14:18,722 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2024-11-18 14:14:18,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 14:14:18,722 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2024-11-18 14:14:18,722 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2024-11-18 14:14:18,722 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2024-11-18 14:14:18,722 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2024-11-18 14:14:18,722 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2024-11-18 14:14:18,723 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2024-11-18 14:14:18,723 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2024-11-18 14:14:18,723 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2024-11-18 14:14:18,723 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2024-11-18 14:14:18,723 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2024-11-18 14:14:18,723 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2024-11-18 14:14:18,723 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2024-11-18 14:14:18,723 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2024-11-18 14:14:18,724 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2024-11-18 14:14:18,724 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2024-11-18 14:14:18,724 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2024-11-18 14:14:18,724 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2024-11-18 14:14:18,724 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2024-11-18 14:14:18,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 14:14:18,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 14:14:18,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-18 14:14:18,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-18 14:14:18,725 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2024-11-18 14:14:18,725 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2024-11-18 14:14:18,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 14:14:18,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 14:14:18,946 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 14:14:18,949 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 14:14:19,685 INFO L? ?]: Removed 395 outVars from TransFormulas that were not future-live. [2024-11-18 14:14:19,685 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 14:14:19,709 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 14:14:19,709 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 14:14:19,710 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:14:19 BoogieIcfgContainer [2024-11-18 14:14:19,710 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 14:14:19,715 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 14:14:19,715 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 14:14:19,718 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 14:14:19,718 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 02:14:17" (1/3) ... [2024-11-18 14:14:19,719 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e9c1d3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:14:19, skipping insertion in model container [2024-11-18 14:14:19,719 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:14:18" (2/3) ... [2024-11-18 14:14:19,719 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e9c1d3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:14:19, skipping insertion in model container [2024-11-18 14:14:19,719 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:14:19" (3/3) ... [2024-11-18 14:14:19,721 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec7_product28.cil.c [2024-11-18 14:14:19,761 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 14:14:19,762 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 14:14:19,837 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 14:14:19,843 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;@71e9fd63, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 14:14:19,843 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 14:14:19,849 INFO L276 IsEmpty]: Start isEmpty. Operand has 324 states, 251 states have (on average 1.5219123505976095) internal successors, (382), 255 states have internal predecessors, (382), 49 states have call successors, (49), 22 states have call predecessors, (49), 22 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2024-11-18 14:14:19,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-18 14:14:19,863 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:14:19,863 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:14:19,864 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:14:19,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:14:19,868 INFO L85 PathProgramCache]: Analyzing trace with hash 331182671, now seen corresponding path program 1 times [2024-11-18 14:14:19,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:14:19,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253990036] [2024-11-18 14:14:19,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:14:19,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:14:20,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:14:20,490 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-18 14:14:20,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:14:20,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253990036] [2024-11-18 14:14:20,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253990036] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:14:20,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373216664] [2024-11-18 14:14:20,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:14:20,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:14:20,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:14:20,505 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:14:20,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 14:14:20,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:14:20,819 INFO L255 TraceCheckSpWp]: Trace formula consists of 1042 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 14:14:20,832 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:14:20,852 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-18 14:14:20,853 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:14:20,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373216664] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:14:20,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:14:20,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 5 [2024-11-18 14:14:20,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644776234] [2024-11-18 14:14:20,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:14:20,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 14:14:20,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:14:20,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 14:14:20,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:14:20,888 INFO L87 Difference]: Start difference. First operand has 324 states, 251 states have (on average 1.5219123505976095) internal successors, (382), 255 states have internal predecessors, (382), 49 states have call successors, (49), 22 states have call predecessors, (49), 22 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-18 14:14:20,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:14:20,939 INFO L93 Difference]: Finished difference Result 499 states and 722 transitions. [2024-11-18 14:14:20,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 14:14:20,941 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 117 [2024-11-18 14:14:20,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:14:20,954 INFO L225 Difference]: With dead ends: 499 [2024-11-18 14:14:20,955 INFO L226 Difference]: Without dead ends: 317 [2024-11-18 14:14:20,960 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:14:20,963 INFO L432 NwaCegarLoop]: 476 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, 476 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:14:20,964 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:14:20,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2024-11-18 14:14:21,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 317. [2024-11-18 14:14:21,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 245 states have (on average 1.5142857142857142) internal successors, (371), 248 states have internal predecessors, (371), 49 states have call successors, (49), 22 states have call predecessors, (49), 22 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-18 14:14:21,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 468 transitions. [2024-11-18 14:14:21,030 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 468 transitions. Word has length 117 [2024-11-18 14:14:21,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:14:21,032 INFO L471 AbstractCegarLoop]: Abstraction has 317 states and 468 transitions. [2024-11-18 14:14:21,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-18 14:14:21,033 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 468 transitions. [2024-11-18 14:14:21,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-18 14:14:21,044 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:14:21,045 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:14:21,062 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 14:14:21,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-18 14:14:21,246 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:14:21,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:14:21,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1049878184, now seen corresponding path program 1 times [2024-11-18 14:14:21,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:14:21,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355119317] [2024-11-18 14:14:21,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:14:21,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:14:21,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:14:21,468 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-18 14:14:21,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:14:21,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355119317] [2024-11-18 14:14:21,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355119317] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:14:21,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864837572] [2024-11-18 14:14:21,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:14:21,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:14:21,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:14:21,473 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:14:21,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 14:14:21,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:14:21,755 INFO L255 TraceCheckSpWp]: Trace formula consists of 1043 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 14:14:21,762 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:14:21,792 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-18 14:14:21,793 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:14:21,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864837572] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:14:21,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:14:21,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 14:14:21,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294926359] [2024-11-18 14:14:21,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:14:21,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:14:21,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:14:21,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:14:21,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:14:21,797 INFO L87 Difference]: Start difference. First operand 317 states and 468 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-18 14:14:21,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:14:21,845 INFO L93 Difference]: Finished difference Result 489 states and 703 transitions. [2024-11-18 14:14:21,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:14:21,846 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 118 [2024-11-18 14:14:21,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:14:21,849 INFO L225 Difference]: With dead ends: 489 [2024-11-18 14:14:21,849 INFO L226 Difference]: Without dead ends: 320 [2024-11-18 14:14:21,851 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:14:21,852 INFO L432 NwaCegarLoop]: 466 mSDtfsCounter, 1 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:14:21,852 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 930 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:14:21,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2024-11-18 14:14:21,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 319. [2024-11-18 14:14:21,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 247 states have (on average 1.5101214574898785) internal successors, (373), 250 states have internal predecessors, (373), 49 states have call successors, (49), 22 states have call predecessors, (49), 22 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-18 14:14:21,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 470 transitions. [2024-11-18 14:14:21,869 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 470 transitions. Word has length 118 [2024-11-18 14:14:21,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:14:21,870 INFO L471 AbstractCegarLoop]: Abstraction has 319 states and 470 transitions. [2024-11-18 14:14:21,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-18 14:14:21,870 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 470 transitions. [2024-11-18 14:14:21,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-18 14:14:21,873 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:14:21,874 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:14:21,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-18 14:14:22,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-18 14:14:22,079 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:14:22,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:14:22,079 INFO L85 PathProgramCache]: Analyzing trace with hash -584714191, now seen corresponding path program 1 times [2024-11-18 14:14:22,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:14:22,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031754697] [2024-11-18 14:14:22,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:14:22,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:14:22,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:14:22,274 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-18 14:14:22,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:14:22,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031754697] [2024-11-18 14:14:22,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031754697] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:14:22,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630049354] [2024-11-18 14:14:22,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:14:22,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:14:22,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:14:22,278 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:14:22,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 14:14:22,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:14:22,557 INFO L255 TraceCheckSpWp]: Trace formula consists of 1055 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:14:22,563 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:14:22,588 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-18 14:14:22,588 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:14:22,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630049354] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:14:22,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:14:22,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 14:14:22,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972184070] [2024-11-18 14:14:22,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:14:22,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:14:22,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:14:22,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:14:22,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:14:22,591 INFO L87 Difference]: Start difference. First operand 319 states and 470 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-18 14:14:22,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:14:22,631 INFO L93 Difference]: Finished difference Result 663 states and 991 transitions. [2024-11-18 14:14:22,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:14:22,632 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 124 [2024-11-18 14:14:22,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:14:22,635 INFO L225 Difference]: With dead ends: 663 [2024-11-18 14:14:22,637 INFO L226 Difference]: Without dead ends: 371 [2024-11-18 14:14:22,638 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:14:22,641 INFO L432 NwaCegarLoop]: 478 mSDtfsCounter, 99 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:14:22,642 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 900 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:14:22,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2024-11-18 14:14:22,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 363. [2024-11-18 14:14:22,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 280 states have (on average 1.525) internal successors, (427), 283 states have internal predecessors, (427), 60 states have call successors, (60), 22 states have call predecessors, (60), 22 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2024-11-18 14:14:22,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 546 transitions. [2024-11-18 14:14:22,664 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 546 transitions. Word has length 124 [2024-11-18 14:14:22,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:14:22,664 INFO L471 AbstractCegarLoop]: Abstraction has 363 states and 546 transitions. [2024-11-18 14:14:22,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-18 14:14:22,665 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 546 transitions. [2024-11-18 14:14:22,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-18 14:14:22,667 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:14:22,667 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:14:22,683 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 14:14:22,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:14:22,872 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:14:22,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:14:22,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1843508188, now seen corresponding path program 1 times [2024-11-18 14:14:22,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:14:22,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780141126] [2024-11-18 14:14:22,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:14:22,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:14:22,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:14:23,024 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-18 14:14:23,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:14:23,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780141126] [2024-11-18 14:14:23,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780141126] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:14:23,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570390945] [2024-11-18 14:14:23,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:14:23,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:14:23,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:14:23,027 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:14:23,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 14:14:23,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:14:23,259 INFO L255 TraceCheckSpWp]: Trace formula consists of 1060 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 14:14:23,263 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:14:23,319 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-18 14:14:23,320 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:14:23,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570390945] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:14:23,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:14:23,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-18 14:14:23,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092610228] [2024-11-18 14:14:23,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:14:23,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:14:23,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:14:23,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:14:23,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:14:23,325 INFO L87 Difference]: Start difference. First operand 363 states and 546 transitions. Second operand has 5 states, 4 states have (on average 20.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-18 14:14:23,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:14:23,385 INFO L93 Difference]: Finished difference Result 717 states and 1082 transitions. [2024-11-18 14:14:23,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:14:23,386 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 20.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 125 [2024-11-18 14:14:23,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:14:23,388 INFO L225 Difference]: With dead ends: 717 [2024-11-18 14:14:23,388 INFO L226 Difference]: Without dead ends: 365 [2024-11-18 14:14:23,389 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:14:23,390 INFO L432 NwaCegarLoop]: 460 mSDtfsCounter, 2 mSDsluCounter, 1369 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1829 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:14:23,390 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1829 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:14:23,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2024-11-18 14:14:23,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 365. [2024-11-18 14:14:23,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 281 states have (on average 1.5231316725978647) internal successors, (428), 285 states have internal predecessors, (428), 60 states have call successors, (60), 22 states have call predecessors, (60), 23 states have return successors, (61), 59 states have call predecessors, (61), 59 states have call successors, (61) [2024-11-18 14:14:23,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 549 transitions. [2024-11-18 14:14:23,410 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 549 transitions. Word has length 125 [2024-11-18 14:14:23,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:14:23,410 INFO L471 AbstractCegarLoop]: Abstraction has 365 states and 549 transitions. [2024-11-18 14:14:23,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 20.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-18 14:14:23,411 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 549 transitions. [2024-11-18 14:14:23,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-18 14:14:23,412 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:14:23,412 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:14:23,428 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 14:14:23,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:14:23,613 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:14:23,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:14:23,614 INFO L85 PathProgramCache]: Analyzing trace with hash 490493493, now seen corresponding path program 1 times [2024-11-18 14:14:23,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:14:23,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708330008] [2024-11-18 14:14:23,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:14:23,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:14:23,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:14:23,761 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-18 14:14:23,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:14:23,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708330008] [2024-11-18 14:14:23,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708330008] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:14:23,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429753951] [2024-11-18 14:14:23,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:14:23,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:14:23,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:14:23,763 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:14:23,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 14:14:23,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:14:23,999 INFO L255 TraceCheckSpWp]: Trace formula consists of 1061 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 14:14:24,002 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:14:24,037 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-18 14:14:24,037 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:14:24,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429753951] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:14:24,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:14:24,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2024-11-18 14:14:24,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133678364] [2024-11-18 14:14:24,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:14:24,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:14:24,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:14:24,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:14:24,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:14:24,040 INFO L87 Difference]: Start difference. First operand 365 states and 549 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-18 14:14:24,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:14:24,092 INFO L93 Difference]: Finished difference Result 719 states and 1087 transitions. [2024-11-18 14:14:24,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:14:24,092 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 126 [2024-11-18 14:14:24,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:14:24,095 INFO L225 Difference]: With dead ends: 719 [2024-11-18 14:14:24,095 INFO L226 Difference]: Without dead ends: 367 [2024-11-18 14:14:24,096 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:14:24,097 INFO L432 NwaCegarLoop]: 458 mSDtfsCounter, 2 mSDsluCounter, 1357 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1815 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:14:24,097 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1815 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:14:24,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2024-11-18 14:14:24,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 367. [2024-11-18 14:14:24,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 282 states have (on average 1.5212765957446808) internal successors, (429), 287 states have internal predecessors, (429), 60 states have call successors, (60), 22 states have call predecessors, (60), 24 states have return successors, (66), 59 states have call predecessors, (66), 59 states have call successors, (66) [2024-11-18 14:14:24,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 555 transitions. [2024-11-18 14:14:24,110 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 555 transitions. Word has length 126 [2024-11-18 14:14:24,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:14:24,111 INFO L471 AbstractCegarLoop]: Abstraction has 367 states and 555 transitions. [2024-11-18 14:14:24,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-18 14:14:24,111 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 555 transitions. [2024-11-18 14:14:24,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-18 14:14:24,113 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:14:24,113 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:14:24,127 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-18 14:14:24,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:14:24,314 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:14:24,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:14:24,315 INFO L85 PathProgramCache]: Analyzing trace with hash -214305394, now seen corresponding path program 1 times [2024-11-18 14:14:24,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:14:24,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239443321] [2024-11-18 14:14:24,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:14:24,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:14:24,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:14:24,423 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-18 14:14:24,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:14:24,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239443321] [2024-11-18 14:14:24,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239443321] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:14:24,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:14:24,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:14:24,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877984023] [2024-11-18 14:14:24,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:14:24,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:14:24,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:14:24,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:14:24,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:14:24,425 INFO L87 Difference]: Start difference. First operand 367 states and 555 transitions. Second operand has 5 states, 4 states have (on average 19.5) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-18 14:14:24,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:14:24,456 INFO L93 Difference]: Finished difference Result 711 states and 1078 transitions. [2024-11-18 14:14:24,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:14:24,456 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.5) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 127 [2024-11-18 14:14:24,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:14:24,458 INFO L225 Difference]: With dead ends: 711 [2024-11-18 14:14:24,459 INFO L226 Difference]: Without dead ends: 367 [2024-11-18 14:14:24,460 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:14:24,461 INFO L432 NwaCegarLoop]: 461 mSDtfsCounter, 2 mSDsluCounter, 1372 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1833 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:14:24,462 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1833 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:14:24,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2024-11-18 14:14:24,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 367. [2024-11-18 14:14:24,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 282 states have (on average 1.5212765957446808) internal successors, (429), 287 states have internal predecessors, (429), 60 states have call successors, (60), 22 states have call predecessors, (60), 24 states have return successors, (65), 59 states have call predecessors, (65), 59 states have call successors, (65) [2024-11-18 14:14:24,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 554 transitions. [2024-11-18 14:14:24,476 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 554 transitions. Word has length 127 [2024-11-18 14:14:24,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:14:24,476 INFO L471 AbstractCegarLoop]: Abstraction has 367 states and 554 transitions. [2024-11-18 14:14:24,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.5) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-18 14:14:24,476 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 554 transitions. [2024-11-18 14:14:24,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-18 14:14:24,478 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:14:24,478 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:14:24,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 14:14:24,478 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:14:24,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:14:24,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1524729219, now seen corresponding path program 2 times [2024-11-18 14:14:24,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:14:24,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516028976] [2024-11-18 14:14:24,479 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:14:24,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:14:24,512 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-18 14:14:24,512 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:14:24,617 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-18 14:14:24,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:14:24,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516028976] [2024-11-18 14:14:24,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516028976] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:14:24,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:14:24,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 14:14:24,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050415280] [2024-11-18 14:14:24,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:14:24,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 14:14:24,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:14:24,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 14:14:24,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:14:24,620 INFO L87 Difference]: Start difference. First operand 367 states and 554 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-18 14:14:24,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:14:24,944 INFO L93 Difference]: Finished difference Result 834 states and 1267 transitions. [2024-11-18 14:14:24,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-18 14:14:24,945 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 128 [2024-11-18 14:14:24,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:14:24,948 INFO L225 Difference]: With dead ends: 834 [2024-11-18 14:14:24,949 INFO L226 Difference]: Without dead ends: 673 [2024-11-18 14:14:24,949 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-18 14:14:24,950 INFO L432 NwaCegarLoop]: 490 mSDtfsCounter, 870 mSDsluCounter, 2153 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 2643 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 14:14:24,950 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [873 Valid, 2643 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 14:14:24,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2024-11-18 14:14:24,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 634. [2024-11-18 14:14:24,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 492 states have (on average 1.5548780487804879) internal successors, (765), 498 states have internal predecessors, (765), 102 states have call successors, (102), 38 states have call predecessors, (102), 39 states have return successors, (117), 100 states have call predecessors, (117), 101 states have call successors, (117) [2024-11-18 14:14:24,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 984 transitions. [2024-11-18 14:14:24,977 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 984 transitions. Word has length 128 [2024-11-18 14:14:24,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:14:24,978 INFO L471 AbstractCegarLoop]: Abstraction has 634 states and 984 transitions. [2024-11-18 14:14:24,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 states have internal predecessors, (80), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-18 14:14:24,978 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 984 transitions. [2024-11-18 14:14:24,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-18 14:14:24,983 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:14:24,983 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:14:24,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 14:14:24,984 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:14:24,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:14:24,984 INFO L85 PathProgramCache]: Analyzing trace with hash -2084255788, now seen corresponding path program 1 times [2024-11-18 14:14:24,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:14:24,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466493024] [2024-11-18 14:14:24,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:14:24,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:14:25,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:14:25,089 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-18 14:14:25,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:14:25,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466493024] [2024-11-18 14:14:25,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466493024] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:14:25,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556445560] [2024-11-18 14:14:25,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:14:25,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:14:25,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:14:25,092 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:14:25,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 14:14:25,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:14:25,363 INFO L255 TraceCheckSpWp]: Trace formula consists of 1066 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 14:14:25,367 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:14:25,403 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-18 14:14:25,403 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:14:25,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556445560] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:14:25,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:14:25,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-18 14:14:25,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111717970] [2024-11-18 14:14:25,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:14:25,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:14:25,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:14:25,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:14:25,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:14:25,405 INFO L87 Difference]: Start difference. First operand 634 states and 984 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-18 14:14:25,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:14:25,464 INFO L93 Difference]: Finished difference Result 1251 states and 1949 transitions. [2024-11-18 14:14:25,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:14:25,465 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 131 [2024-11-18 14:14:25,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:14:25,468 INFO L225 Difference]: With dead ends: 1251 [2024-11-18 14:14:25,469 INFO L226 Difference]: Without dead ends: 640 [2024-11-18 14:14:25,471 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:14:25,472 INFO L432 NwaCegarLoop]: 462 mSDtfsCounter, 1 mSDsluCounter, 1368 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1830 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:14:25,472 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1830 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:14:25,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2024-11-18 14:14:25,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 636. [2024-11-18 14:14:25,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 493 states have (on average 1.5537525354969575) internal successors, (766), 500 states have internal predecessors, (766), 102 states have call successors, (102), 38 states have call predecessors, (102), 40 states have return successors, (120), 100 states have call predecessors, (120), 101 states have call successors, (120) [2024-11-18 14:14:25,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 988 transitions. [2024-11-18 14:14:25,497 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 988 transitions. Word has length 131 [2024-11-18 14:14:25,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:14:25,497 INFO L471 AbstractCegarLoop]: Abstraction has 636 states and 988 transitions. [2024-11-18 14:14:25,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-18 14:14:25,498 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 988 transitions. [2024-11-18 14:14:25,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-18 14:14:25,500 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:14:25,500 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:14:25,516 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-18 14:14:25,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:14:25,701 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:14:25,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:14:25,702 INFO L85 PathProgramCache]: Analyzing trace with hash 396493650, now seen corresponding path program 1 times [2024-11-18 14:14:25,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:14:25,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425144686] [2024-11-18 14:14:25,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:14:25,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:14:25,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:14:25,789 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-18 14:14:25,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:14:25,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425144686] [2024-11-18 14:14:25,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425144686] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:14:25,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893954391] [2024-11-18 14:14:25,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:14:25,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:14:25,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:14:25,792 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:14:25,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 14:14:26,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:14:26,022 INFO L255 TraceCheckSpWp]: Trace formula consists of 1064 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 14:14:26,026 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:14:26,061 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-18 14:14:26,061 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:14:26,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893954391] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:14:26,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:14:26,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-18 14:14:26,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042970160] [2024-11-18 14:14:26,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:14:26,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:14:26,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:14:26,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:14:26,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:14:26,063 INFO L87 Difference]: Start difference. First operand 636 states and 988 transitions. Second operand has 5 states, 4 states have (on average 21.5) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-18 14:14:26,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:14:26,113 INFO L93 Difference]: Finished difference Result 1241 states and 1935 transitions. [2024-11-18 14:14:26,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:14:26,114 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.5) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 132 [2024-11-18 14:14:26,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:14:26,118 INFO L225 Difference]: With dead ends: 1241 [2024-11-18 14:14:26,118 INFO L226 Difference]: Without dead ends: 640 [2024-11-18 14:14:26,120 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:14:26,121 INFO L432 NwaCegarLoop]: 460 mSDtfsCounter, 1 mSDsluCounter, 1369 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1829 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:14:26,121 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1829 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:14:26,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2024-11-18 14:14:26,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 640. [2024-11-18 14:14:26,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 495 states have (on average 1.5515151515151515) internal successors, (768), 504 states have internal predecessors, (768), 102 states have call successors, (102), 38 states have call predecessors, (102), 42 states have return successors, (123), 100 states have call predecessors, (123), 101 states have call successors, (123) [2024-11-18 14:14:26,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 993 transitions. [2024-11-18 14:14:26,146 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 993 transitions. Word has length 132 [2024-11-18 14:14:26,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:14:26,147 INFO L471 AbstractCegarLoop]: Abstraction has 640 states and 993 transitions. [2024-11-18 14:14:26,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.5) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-18 14:14:26,147 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 993 transitions. [2024-11-18 14:14:26,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-18 14:14:26,150 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:14:26,150 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:14:26,166 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 14:14:26,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:14:26,351 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:14:26,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:14:26,352 INFO L85 PathProgramCache]: Analyzing trace with hash -2035030922, now seen corresponding path program 1 times [2024-11-18 14:14:26,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:14:26,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906003241] [2024-11-18 14:14:26,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:14:26,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:14:26,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:14:26,487 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-18 14:14:26,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:14:26,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906003241] [2024-11-18 14:14:26,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906003241] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:14:26,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705867578] [2024-11-18 14:14:26,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:14:26,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:14:26,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:14:26,490 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:14:26,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 14:14:26,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:14:26,735 INFO L255 TraceCheckSpWp]: Trace formula consists of 1065 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 14:14:26,739 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:14:26,778 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-18 14:14:26,778 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:14:26,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705867578] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:14:26,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:14:26,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-18 14:14:26,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467153926] [2024-11-18 14:14:26,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:14:26,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:14:26,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:14:26,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:14:26,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:14:26,780 INFO L87 Difference]: Start difference. First operand 640 states and 993 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-18 14:14:26,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:14:26,834 INFO L93 Difference]: Finished difference Result 1243 states and 1937 transitions. [2024-11-18 14:14:26,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:14:26,834 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 133 [2024-11-18 14:14:26,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:14:26,838 INFO L225 Difference]: With dead ends: 1243 [2024-11-18 14:14:26,838 INFO L226 Difference]: Without dead ends: 646 [2024-11-18 14:14:26,839 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:14:26,840 INFO L432 NwaCegarLoop]: 458 mSDtfsCounter, 1 mSDsluCounter, 1357 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1815 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:14:26,840 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1815 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:14:26,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2024-11-18 14:14:26,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 644. [2024-11-18 14:14:26,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 644 states, 497 states have (on average 1.5492957746478873) internal successors, (770), 508 states have internal predecessors, (770), 102 states have call successors, (102), 38 states have call predecessors, (102), 44 states have return successors, (127), 100 states have call predecessors, (127), 101 states have call successors, (127) [2024-11-18 14:14:26,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 999 transitions. [2024-11-18 14:14:26,862 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 999 transitions. Word has length 133 [2024-11-18 14:14:26,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:14:26,863 INFO L471 AbstractCegarLoop]: Abstraction has 644 states and 999 transitions. [2024-11-18 14:14:26,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-18 14:14:26,863 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 999 transitions. [2024-11-18 14:14:26,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-18 14:14:26,866 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:14:26,866 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:14:26,882 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-18 14:14:27,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-18 14:14:27,067 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:14:27,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:14:27,068 INFO L85 PathProgramCache]: Analyzing trace with hash 942139436, now seen corresponding path program 2 times [2024-11-18 14:14:27,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:14:27,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092368598] [2024-11-18 14:14:27,068 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:14:27,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:14:27,096 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 14:14:27,097 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:14:27,190 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-18 14:14:27,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:14:27,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092368598] [2024-11-18 14:14:27,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092368598] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:14:27,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253421439] [2024-11-18 14:14:27,191 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:14:27,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:14:27,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:14:27,195 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:14:27,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-18 14:14:27,466 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 14:14:27,466 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:14:27,470 INFO L255 TraceCheckSpWp]: Trace formula consists of 1063 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-18 14:14:27,474 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:14:27,623 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-18 14:14:27,623 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:14:27,907 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-18 14:14:27,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253421439] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:14:27,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:14:27,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2024-11-18 14:14:27,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382272223] [2024-11-18 14:14:27,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:14:27,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-18 14:14:27,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:14:27,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-18 14:14:27,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2024-11-18 14:14:27,910 INFO L87 Difference]: Start difference. First operand 644 states and 999 transitions. Second operand has 19 states, 19 states have (on average 10.578947368421053) internal successors, (201), 17 states have internal predecessors, (201), 5 states have call successors, (45), 6 states have call predecessors, (45), 10 states have return successors, (40), 7 states have call predecessors, (40), 5 states have call successors, (40) [2024-11-18 14:14:31,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:14:31,192 INFO L93 Difference]: Finished difference Result 1766 states and 2724 transitions. [2024-11-18 14:14:31,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-18 14:14:31,193 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 10.578947368421053) internal successors, (201), 17 states have internal predecessors, (201), 5 states have call successors, (45), 6 states have call predecessors, (45), 10 states have return successors, (40), 7 states have call predecessors, (40), 5 states have call successors, (40) Word has length 134 [2024-11-18 14:14:31,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:14:31,200 INFO L225 Difference]: With dead ends: 1766 [2024-11-18 14:14:31,201 INFO L226 Difference]: Without dead ends: 1322 [2024-11-18 14:14:31,203 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=384, Invalid=1686, Unknown=0, NotChecked=0, Total=2070 [2024-11-18 14:14:31,204 INFO L432 NwaCegarLoop]: 154 mSDtfsCounter, 1158 mSDsluCounter, 2265 mSDsCounter, 0 mSdLazyCounter, 6363 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1196 SdHoareTripleChecker+Valid, 2419 SdHoareTripleChecker+Invalid, 6606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 6363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-18 14:14:31,205 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1196 Valid, 2419 Invalid, 6606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 6363 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-18 14:14:31,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states. [2024-11-18 14:14:31,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 1249. [2024-11-18 14:14:31,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1249 states, 971 states have (on average 1.564366632337796) internal successors, (1519), 987 states have internal predecessors, (1519), 192 states have call successors, (192), 78 states have call predecessors, (192), 85 states have return successors, (244), 189 states have call predecessors, (244), 190 states have call successors, (244) [2024-11-18 14:14:31,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 1955 transitions. [2024-11-18 14:14:31,248 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 1955 transitions. Word has length 134 [2024-11-18 14:14:31,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:14:31,248 INFO L471 AbstractCegarLoop]: Abstraction has 1249 states and 1955 transitions. [2024-11-18 14:14:31,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 10.578947368421053) internal successors, (201), 17 states have internal predecessors, (201), 5 states have call successors, (45), 6 states have call predecessors, (45), 10 states have return successors, (40), 7 states have call predecessors, (40), 5 states have call successors, (40) [2024-11-18 14:14:31,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 1955 transitions. [2024-11-18 14:14:31,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-18 14:14:31,253 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:14:31,253 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:14:31,270 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-18 14:14:31,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:14:31,454 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:14:31,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:14:31,454 INFO L85 PathProgramCache]: Analyzing trace with hash -698988234, now seen corresponding path program 1 times [2024-11-18 14:14:31,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:14:31,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970793563] [2024-11-18 14:14:31,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:14:31,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:14:31,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:14:31,596 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-18 14:14:31,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:14:31,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970793563] [2024-11-18 14:14:31,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970793563] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:14:31,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440474862] [2024-11-18 14:14:31,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:14:31,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:14:31,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:14:31,599 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:14:31,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-18 14:14:31,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:14:31,851 INFO L255 TraceCheckSpWp]: Trace formula consists of 1092 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:14:31,854 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:14:31,867 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-18 14:14:31,867 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:14:31,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440474862] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:14:31,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:14:31,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 14:14:31,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176272768] [2024-11-18 14:14:31,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:14:31,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:14:31,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:14:31,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:14:31,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:14:31,869 INFO L87 Difference]: Start difference. First operand 1249 states and 1955 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:14:31,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:14:31,906 INFO L93 Difference]: Finished difference Result 2919 states and 4703 transitions. [2024-11-18 14:14:31,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:14:31,906 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 140 [2024-11-18 14:14:31,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:14:31,917 INFO L225 Difference]: With dead ends: 2919 [2024-11-18 14:14:31,917 INFO L226 Difference]: Without dead ends: 1721 [2024-11-18 14:14:31,921 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:14:31,922 INFO L432 NwaCegarLoop]: 483 mSDtfsCounter, 97 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 948 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:14:31,922 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 948 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:14:31,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1721 states. [2024-11-18 14:14:31,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1721 to 1701. [2024-11-18 14:14:31,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1701 states, 1323 states have (on average 1.5895691609977325) internal successors, (2103), 1339 states have internal predecessors, (2103), 292 states have call successors, (292), 78 states have call predecessors, (292), 85 states have return successors, (384), 289 states have call predecessors, (384), 290 states have call successors, (384) [2024-11-18 14:14:31,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1701 states to 1701 states and 2779 transitions. [2024-11-18 14:14:31,993 INFO L78 Accepts]: Start accepts. Automaton has 1701 states and 2779 transitions. Word has length 140 [2024-11-18 14:14:31,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:14:31,993 INFO L471 AbstractCegarLoop]: Abstraction has 1701 states and 2779 transitions. [2024-11-18 14:14:31,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 14:14:31,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1701 states and 2779 transitions. [2024-11-18 14:14:32,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-18 14:14:32,002 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:14:32,002 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:14:32,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-18 14:14:32,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-18 14:14:32,203 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:14:32,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:14:32,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1653966666, now seen corresponding path program 1 times [2024-11-18 14:14:32,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:14:32,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357840320] [2024-11-18 14:14:32,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:14:32,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:14:32,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:14:32,294 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-18 14:14:32,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:14:32,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357840320] [2024-11-18 14:14:32,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357840320] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:14:32,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:14:32,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:14:32,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000098093] [2024-11-18 14:14:32,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:14:32,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:14:32,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:14:32,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:14:32,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:14:32,296 INFO L87 Difference]: Start difference. First operand 1701 states and 2779 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-18 14:14:32,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:14:32,394 INFO L93 Difference]: Finished difference Result 3375 states and 5534 transitions. [2024-11-18 14:14:32,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:14:32,394 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 133 [2024-11-18 14:14:32,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:14:32,404 INFO L225 Difference]: With dead ends: 3375 [2024-11-18 14:14:32,404 INFO L226 Difference]: Without dead ends: 1717 [2024-11-18 14:14:32,410 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:14:32,411 INFO L432 NwaCegarLoop]: 458 mSDtfsCounter, 0 mSDsluCounter, 1357 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1815 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:14:32,411 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1815 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:14:32,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1717 states. [2024-11-18 14:14:32,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1717 to 1705. [2024-11-18 14:14:32,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1705 states, 1325 states have (on average 1.588679245283019) internal successors, (2105), 1343 states have internal predecessors, (2105), 292 states have call successors, (292), 78 states have call predecessors, (292), 87 states have return successors, (387), 289 states have call predecessors, (387), 290 states have call successors, (387) [2024-11-18 14:14:32,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1705 states to 1705 states and 2784 transitions. [2024-11-18 14:14:32,477 INFO L78 Accepts]: Start accepts. Automaton has 1705 states and 2784 transitions. Word has length 133 [2024-11-18 14:14:32,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:14:32,478 INFO L471 AbstractCegarLoop]: Abstraction has 1705 states and 2784 transitions. [2024-11-18 14:14:32,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-18 14:14:32,478 INFO L276 IsEmpty]: Start isEmpty. Operand 1705 states and 2784 transitions. [2024-11-18 14:14:32,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-18 14:14:32,484 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:14:32,484 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:14:32,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 14:14:32,484 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:14:32,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:14:32,485 INFO L85 PathProgramCache]: Analyzing trace with hash -883233100, now seen corresponding path program 1 times [2024-11-18 14:14:32,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:14:32,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371718649] [2024-11-18 14:14:32,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:14:32,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:14:32,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:14:32,570 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-18 14:14:32,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:14:32,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371718649] [2024-11-18 14:14:32,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371718649] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:14:32,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189337496] [2024-11-18 14:14:32,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:14:32,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:14:32,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:14:32,577 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:14:32,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-18 14:14:32,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:14:32,844 INFO L255 TraceCheckSpWp]: Trace formula consists of 1068 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:14:32,846 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:14:32,864 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-18 14:14:32,864 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:14:32,925 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-18 14:14:32,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189337496] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:14:32,926 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:14:32,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-18 14:14:32,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260964418] [2024-11-18 14:14:32,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:14:32,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:14:32,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:14:32,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:14:32,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:14:32,928 INFO L87 Difference]: Start difference. First operand 1705 states and 2784 transitions. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-18 14:14:33,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:14:33,076 INFO L93 Difference]: Finished difference Result 3781 states and 6311 transitions. [2024-11-18 14:14:33,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:14:33,077 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 133 [2024-11-18 14:14:33,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:14:33,091 INFO L225 Difference]: With dead ends: 3781 [2024-11-18 14:14:33,092 INFO L226 Difference]: Without dead ends: 3293 [2024-11-18 14:14:33,096 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:14:33,096 INFO L432 NwaCegarLoop]: 508 mSDtfsCounter, 460 mSDsluCounter, 1256 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 505 SdHoareTripleChecker+Valid, 1764 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:14:33,097 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [505 Valid, 1764 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:14:33,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3293 states. [2024-11-18 14:14:33,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3293 to 3237. [2024-11-18 14:14:33,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3237 states, 2545 states have (on average 1.6082514734774067) internal successors, (4093), 2539 states have internal predecessors, (4093), 604 states have call successors, (604), 78 states have call predecessors, (604), 87 states have return successors, (827), 625 states have call predecessors, (827), 602 states have call successors, (827) [2024-11-18 14:14:33,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3237 states to 3237 states and 5524 transitions. [2024-11-18 14:14:33,238 INFO L78 Accepts]: Start accepts. Automaton has 3237 states and 5524 transitions. Word has length 133 [2024-11-18 14:14:33,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:14:33,238 INFO L471 AbstractCegarLoop]: Abstraction has 3237 states and 5524 transitions. [2024-11-18 14:14:33,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-18 14:14:33,238 INFO L276 IsEmpty]: Start isEmpty. Operand 3237 states and 5524 transitions. [2024-11-18 14:14:33,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-18 14:14:33,252 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:14:33,252 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 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, 1, 1] [2024-11-18 14:14:33,271 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-18 14:14:33,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-18 14:14:33,453 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:14:33,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:14:33,453 INFO L85 PathProgramCache]: Analyzing trace with hash 599111545, now seen corresponding path program 1 times [2024-11-18 14:14:33,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:14:33,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8337008] [2024-11-18 14:14:33,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:14:33,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:14:33,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:14:33,623 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-18 14:14:33,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:14:33,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8337008] [2024-11-18 14:14:33,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8337008] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:14:33,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103549035] [2024-11-18 14:14:33,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:14:33,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:14:33,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:14:33,626 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:14:33,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-18 14:14:33,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:14:33,942 INFO L255 TraceCheckSpWp]: Trace formula consists of 1123 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:14:33,945 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:14:33,969 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-18 14:14:33,970 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:14:33,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103549035] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:14:33,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:14:33,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-18 14:14:33,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162433378] [2024-11-18 14:14:33,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:14:33,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:14:33,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:14:33,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:14:33,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:14:33,971 INFO L87 Difference]: Start difference. First operand 3237 states and 5524 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-18 14:14:34,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:14:34,077 INFO L93 Difference]: Finished difference Result 7655 states and 13230 transitions. [2024-11-18 14:14:34,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:14:34,078 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 155 [2024-11-18 14:14:34,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:14:34,101 INFO L225 Difference]: With dead ends: 7655 [2024-11-18 14:14:34,101 INFO L226 Difference]: Without dead ends: 4713 [2024-11-18 14:14:34,111 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:14:34,112 INFO L432 NwaCegarLoop]: 474 mSDtfsCounter, 91 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 933 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:14:34,112 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 933 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:14:34,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4713 states. [2024-11-18 14:14:34,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4713 to 4693. [2024-11-18 14:14:34,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4693 states, 3745 states have (on average 1.6157543391188252) internal successors, (6051), 3721 states have internal predecessors, (6051), 860 states have call successors, (860), 78 states have call predecessors, (860), 87 states have return successors, (1219), 899 states have call predecessors, (1219), 858 states have call successors, (1219) [2024-11-18 14:14:34,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4693 states to 4693 states and 8130 transitions. [2024-11-18 14:14:34,269 INFO L78 Accepts]: Start accepts. Automaton has 4693 states and 8130 transitions. Word has length 155 [2024-11-18 14:14:34,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:14:34,269 INFO L471 AbstractCegarLoop]: Abstraction has 4693 states and 8130 transitions. [2024-11-18 14:14:34,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-18 14:14:34,269 INFO L276 IsEmpty]: Start isEmpty. Operand 4693 states and 8130 transitions. [2024-11-18 14:14:34,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-18 14:14:34,289 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:14:34,289 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:14:34,304 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-18 14:14:34,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-18 14:14:34,490 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:14:34,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:14:34,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1680688148, now seen corresponding path program 1 times [2024-11-18 14:14:34,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:14:34,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817682298] [2024-11-18 14:14:34,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:14:34,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:14:34,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:14:34,558 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-18 14:14:34,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:14:34,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817682298] [2024-11-18 14:14:34,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817682298] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:14:34,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:14:34,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:14:34,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274932193] [2024-11-18 14:14:34,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:14:34,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:14:34,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:14:34,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:14:34,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:14:34,560 INFO L87 Difference]: Start difference. First operand 4693 states and 8130 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-18 14:14:34,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:14:34,767 INFO L93 Difference]: Finished difference Result 12079 states and 21060 transitions. [2024-11-18 14:14:34,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:14:34,767 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 141 [2024-11-18 14:14:34,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:14:34,830 INFO L225 Difference]: With dead ends: 12079 [2024-11-18 14:14:34,830 INFO L226 Difference]: Without dead ends: 7625 [2024-11-18 14:14:34,850 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:14:34,850 INFO L432 NwaCegarLoop]: 479 mSDtfsCounter, 95 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:14:34,851 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 942 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:14:34,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7625 states. [2024-11-18 14:14:35,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7625 to 7605. [2024-11-18 14:14:35,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7605 states, 6101 states have (on average 1.620226192427471) internal successors, (9885), 6077 states have internal predecessors, (9885), 1416 states have call successors, (1416), 78 states have call predecessors, (1416), 87 states have return successors, (1931), 1455 states have call predecessors, (1931), 1414 states have call successors, (1931) [2024-11-18 14:14:35,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7605 states to 7605 states and 13232 transitions. [2024-11-18 14:14:35,200 INFO L78 Accepts]: Start accepts. Automaton has 7605 states and 13232 transitions. Word has length 141 [2024-11-18 14:14:35,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:14:35,200 INFO L471 AbstractCegarLoop]: Abstraction has 7605 states and 13232 transitions. [2024-11-18 14:14:35,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-18 14:14:35,200 INFO L276 IsEmpty]: Start isEmpty. Operand 7605 states and 13232 transitions. [2024-11-18 14:14:35,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-18 14:14:35,229 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:14:35,229 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 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, 1, 1, 1] [2024-11-18 14:14:35,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 14:14:35,230 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:14:35,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:14:35,230 INFO L85 PathProgramCache]: Analyzing trace with hash -2135397644, now seen corresponding path program 1 times [2024-11-18 14:14:35,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:14:35,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917476269] [2024-11-18 14:14:35,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:14:35,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:14:35,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:14:35,362 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-18 14:14:35,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:14:35,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917476269] [2024-11-18 14:14:35,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917476269] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:14:35,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680904981] [2024-11-18 14:14:35,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:14:35,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:14:35,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:14:35,365 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:14:35,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-18 14:14:35,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:14:35,626 INFO L255 TraceCheckSpWp]: Trace formula consists of 1128 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:14:35,629 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:14:35,657 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-18 14:14:35,657 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:14:35,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680904981] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:14:35,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:14:35,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-18 14:14:35,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237899366] [2024-11-18 14:14:35,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:14:35,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:14:35,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:14:35,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:14:35,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:14:35,659 INFO L87 Difference]: Start difference. First operand 7605 states and 13232 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-18 14:14:35,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:14:35,881 INFO L93 Difference]: Finished difference Result 18035 states and 31716 transitions. [2024-11-18 14:14:35,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:14:35,882 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 156 [2024-11-18 14:14:35,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:14:35,934 INFO L225 Difference]: With dead ends: 18035 [2024-11-18 14:14:35,935 INFO L226 Difference]: Without dead ends: 11661 [2024-11-18 14:14:35,960 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:14:35,961 INFO L432 NwaCegarLoop]: 474 mSDtfsCounter, 89 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 933 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:14:35,962 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 933 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:14:35,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11661 states. [2024-11-18 14:14:36,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11661 to 11641. [2024-11-18 14:14:36,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11641 states, 9497 states have (on average 1.6231441507844582) internal successors, (15415), 9449 states have internal predecessors, (15415), 2056 states have call successors, (2056), 78 states have call predecessors, (2056), 87 states have return successors, (2907), 2119 states have call predecessors, (2907), 2054 states have call successors, (2907) [2024-11-18 14:14:36,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11641 states to 11641 states and 20378 transitions. [2024-11-18 14:14:36,390 INFO L78 Accepts]: Start accepts. Automaton has 11641 states and 20378 transitions. Word has length 156 [2024-11-18 14:14:36,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:14:36,391 INFO L471 AbstractCegarLoop]: Abstraction has 11641 states and 20378 transitions. [2024-11-18 14:14:36,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-18 14:14:36,392 INFO L276 IsEmpty]: Start isEmpty. Operand 11641 states and 20378 transitions. [2024-11-18 14:14:36,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-18 14:14:36,511 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:14:36,512 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:14:36,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-18 14:14:36,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-18 14:14:36,713 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:14:36,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:14:36,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1034391599, now seen corresponding path program 1 times [2024-11-18 14:14:36,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:14:36,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551196740] [2024-11-18 14:14:36,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:14:36,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:14:36,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:14:36,790 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-18 14:14:36,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:14:36,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551196740] [2024-11-18 14:14:36,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551196740] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:14:36,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:14:36,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:14:36,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589015418] [2024-11-18 14:14:36,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:14:36,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:14:36,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:14:36,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:14:36,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:14:36,792 INFO L87 Difference]: Start difference. First operand 11641 states and 20378 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-18 14:14:37,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:14:37,269 INFO L93 Difference]: Finished difference Result 28993 states and 51178 transitions. [2024-11-18 14:14:37,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:14:37,270 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 143 [2024-11-18 14:14:37,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:14:37,345 INFO L225 Difference]: With dead ends: 28993 [2024-11-18 14:14:37,345 INFO L226 Difference]: Without dead ends: 19171 [2024-11-18 14:14:37,372 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:14:37,372 INFO L432 NwaCegarLoop]: 481 mSDtfsCounter, 89 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:14:37,372 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 946 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:14:37,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19171 states. [2024-11-18 14:14:38,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19171 to 19151. [2024-11-18 14:14:38,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19151 states, 15625 states have (on average 1.615936) internal successors, (25249), 15547 states have internal predecessors, (25249), 3438 states have call successors, (3438), 78 states have call predecessors, (3438), 87 states have return successors, (4893), 3531 states have call predecessors, (4893), 3436 states have call successors, (4893) [2024-11-18 14:14:38,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19151 states to 19151 states and 33580 transitions. [2024-11-18 14:14:38,155 INFO L78 Accepts]: Start accepts. Automaton has 19151 states and 33580 transitions. Word has length 143 [2024-11-18 14:14:38,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:14:38,156 INFO L471 AbstractCegarLoop]: Abstraction has 19151 states and 33580 transitions. [2024-11-18 14:14:38,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-18 14:14:38,156 INFO L276 IsEmpty]: Start isEmpty. Operand 19151 states and 33580 transitions. [2024-11-18 14:14:38,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-18 14:14:38,210 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:14:38,211 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 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, 1, 1, 1, 1, 1] [2024-11-18 14:14:38,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-18 14:14:38,211 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:14:38,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:14:38,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1038116744, now seen corresponding path program 1 times [2024-11-18 14:14:38,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:14:38,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343928429] [2024-11-18 14:14:38,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:14:38,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:14:38,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:14:38,561 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-18 14:14:38,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:14:38,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343928429] [2024-11-18 14:14:38,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343928429] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:14:38,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580794091] [2024-11-18 14:14:38,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:14:38,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:14:38,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:14:38,564 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:14:38,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-18 14:14:38,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:14:38,822 INFO L255 TraceCheckSpWp]: Trace formula consists of 1138 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:14:38,825 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:14:38,853 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-18 14:14:38,853 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:14:38,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580794091] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:14:38,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:14:38,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-18 14:14:38,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74936089] [2024-11-18 14:14:38,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:14:38,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:14:38,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:14:38,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:14:38,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:14:38,855 INFO L87 Difference]: Start difference. First operand 19151 states and 33580 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-18 14:14:39,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:14:39,601 INFO L93 Difference]: Finished difference Result 49497 states and 87064 transitions. [2024-11-18 14:14:39,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:14:39,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 158 [2024-11-18 14:14:39,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:14:39,723 INFO L225 Difference]: With dead ends: 49497 [2024-11-18 14:14:39,724 INFO L226 Difference]: Without dead ends: 33123 [2024-11-18 14:14:39,763 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:14:39,764 INFO L432 NwaCegarLoop]: 469 mSDtfsCounter, 85 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:14:39,764 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 930 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:14:39,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33123 states. [2024-11-18 14:14:41,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33123 to 33103. [2024-11-18 14:14:41,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33103 states, 27153 states have (on average 1.6137075092991566) internal successors, (43817), 27075 states have internal predecessors, (43817), 5862 states have call successors, (5862), 78 states have call predecessors, (5862), 87 states have return successors, (8061), 5955 states have call predecessors, (8061), 5860 states have call successors, (8061) [2024-11-18 14:14:41,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33103 states to 33103 states and 57740 transitions. [2024-11-18 14:14:41,404 INFO L78 Accepts]: Start accepts. Automaton has 33103 states and 57740 transitions. Word has length 158 [2024-11-18 14:14:41,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:14:41,405 INFO L471 AbstractCegarLoop]: Abstraction has 33103 states and 57740 transitions. [2024-11-18 14:14:41,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-18 14:14:41,406 INFO L276 IsEmpty]: Start isEmpty. Operand 33103 states and 57740 transitions. [2024-11-18 14:14:41,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-18 14:14:41,482 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:14:41,482 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2024-11-18 14:14:41,498 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-18 14:14:41,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:14:41,684 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:14:41,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:14:41,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1963380663, now seen corresponding path program 1 times [2024-11-18 14:14:41,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:14:41,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153447469] [2024-11-18 14:14:41,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:14:41,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:14:41,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:14:41,938 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-18 14:14:41,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:14:41,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153447469] [2024-11-18 14:14:41,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153447469] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:14:41,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473810268] [2024-11-18 14:14:41,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:14:41,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:14:41,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:14:41,941 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:14:41,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-18 14:14:42,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:14:42,232 INFO L255 TraceCheckSpWp]: Trace formula consists of 1143 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:14:42,236 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:14:42,268 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-18 14:14:42,268 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:14:42,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473810268] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:14:42,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:14:42,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-18 14:14:42,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302163479] [2024-11-18 14:14:42,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:14:42,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:14:42,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:14:42,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:14:42,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:14:42,270 INFO L87 Difference]: Start difference. First operand 33103 states and 57740 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-18 14:14:43,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:14:43,550 INFO L93 Difference]: Finished difference Result 87435 states and 153302 transitions. [2024-11-18 14:14:43,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:14:43,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 159 [2024-11-18 14:14:43,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:14:43,872 INFO L225 Difference]: With dead ends: 87435 [2024-11-18 14:14:43,872 INFO L226 Difference]: Without dead ends: 58733 [2024-11-18 14:14:43,940 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:14:43,941 INFO L432 NwaCegarLoop]: 478 mSDtfsCounter, 83 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:14:43,942 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 942 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:14:43,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58733 states. [2024-11-18 14:14:45,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58733 to 58713. [2024-11-18 14:14:46,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58713 states, 48101 states have (on average 1.6039791272530717) internal successors, (77153), 47987 states have internal predecessors, (77153), 10524 states have call successors, (10524), 78 states have call predecessors, (10524), 87 states have return successors, (14505), 10653 states have call predecessors, (14505), 10522 states have call successors, (14505) [2024-11-18 14:14:46,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58713 states to 58713 states and 102182 transitions. [2024-11-18 14:14:46,225 INFO L78 Accepts]: Start accepts. Automaton has 58713 states and 102182 transitions. Word has length 159 [2024-11-18 14:14:46,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:14:46,226 INFO L471 AbstractCegarLoop]: Abstraction has 58713 states and 102182 transitions. [2024-11-18 14:14:46,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-18 14:14:46,226 INFO L276 IsEmpty]: Start isEmpty. Operand 58713 states and 102182 transitions. [2024-11-18 14:14:46,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-18 14:14:46,734 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:14:46,735 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:14:46,750 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-18 14:14:46,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:14:46,935 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:14:46,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:14:46,936 INFO L85 PathProgramCache]: Analyzing trace with hash -2117408705, now seen corresponding path program 1 times [2024-11-18 14:14:46,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:14:46,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313932223] [2024-11-18 14:14:46,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:14:46,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:14:46,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:14:46,986 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-18 14:14:46,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:14:46,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313932223] [2024-11-18 14:14:46,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313932223] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:14:46,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:14:46,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:14:46,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922384148] [2024-11-18 14:14:46,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:14:46,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:14:46,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:14:46,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:14:46,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:14:46,988 INFO L87 Difference]: Start difference. First operand 58713 states and 102182 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-18 14:14:49,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:14:49,218 INFO L93 Difference]: Finished difference Result 158417 states and 277288 transitions. [2024-11-18 14:14:49,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:14:49,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 146 [2024-11-18 14:14:49,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:14:49,939 INFO L225 Difference]: With dead ends: 158417 [2024-11-18 14:14:49,939 INFO L226 Difference]: Without dead ends: 105727 [2024-11-18 14:14:50,093 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:14:50,094 INFO L432 NwaCegarLoop]: 474 mSDtfsCounter, 83 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 936 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:14:50,094 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 936 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:14:50,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105727 states. [2024-11-18 14:14:53,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105727 to 105707. [2024-11-18 14:14:53,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105707 states, 87103 states have (on average 1.5993593791258625) internal successors, (139309), 86947 states have internal predecessors, (139309), 18516 states have call successors, (18516), 78 states have call predecessors, (18516), 87 states have return successors, (25955), 18687 states have call predecessors, (25955), 18514 states have call successors, (25955) [2024-11-18 14:14:54,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105707 states to 105707 states and 183780 transitions. [2024-11-18 14:14:54,379 INFO L78 Accepts]: Start accepts. Automaton has 105707 states and 183780 transitions. Word has length 146 [2024-11-18 14:14:54,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:14:54,380 INFO L471 AbstractCegarLoop]: Abstraction has 105707 states and 183780 transitions. [2024-11-18 14:14:54,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-18 14:14:54,380 INFO L276 IsEmpty]: Start isEmpty. Operand 105707 states and 183780 transitions. [2024-11-18 14:14:55,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-18 14:14:55,042 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:14:55,043 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:14:55,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-18 14:14:55,044 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:14:55,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:14:55,044 INFO L85 PathProgramCache]: Analyzing trace with hash 585021203, now seen corresponding path program 1 times [2024-11-18 14:14:55,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:14:55,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747566824] [2024-11-18 14:14:55,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:14:55,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:14:55,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:14:55,160 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-18 14:14:55,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:14:55,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747566824] [2024-11-18 14:14:55,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747566824] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:14:55,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:14:55,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:14:55,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489355572] [2024-11-18 14:14:55,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:14:55,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:14:55,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:14:55,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:14:55,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:14:55,162 INFO L87 Difference]: Start difference. First operand 105707 states and 183780 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-18 14:14:59,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:14:59,769 INFO L93 Difference]: Finished difference Result 292471 states and 507554 transitions. [2024-11-18 14:14:59,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:14:59,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 147 [2024-11-18 14:14:59,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:15:00,987 INFO L225 Difference]: With dead ends: 292471 [2024-11-18 14:15:00,988 INFO L226 Difference]: Without dead ends: 195771 [2024-11-18 14:15:01,224 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 14:15:01,225 INFO L432 NwaCegarLoop]: 476 mSDtfsCounter, 81 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 938 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 14:15:01,225 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 938 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:15:01,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195771 states. [2024-11-18 14:15:08,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195771 to 195751. [2024-11-18 14:15:08,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195751 states, 162299 states have (on average 1.5927824570699758) internal successors, (258507), 162143 states have internal predecessors, (258507), 33364 states have call successors, (33364), 78 states have call predecessors, (33364), 87 states have return successors, (44527), 33535 states have call predecessors, (44527), 33362 states have call successors, (44527) [2024-11-18 14:15:09,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195751 states to 195751 states and 336398 transitions. [2024-11-18 14:15:09,139 INFO L78 Accepts]: Start accepts. Automaton has 195751 states and 336398 transitions. Word has length 147 [2024-11-18 14:15:09,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:15:09,140 INFO L471 AbstractCegarLoop]: Abstraction has 195751 states and 336398 transitions. [2024-11-18 14:15:09,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-18 14:15:09,140 INFO L276 IsEmpty]: Start isEmpty. Operand 195751 states and 336398 transitions. [2024-11-18 14:15:09,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-18 14:15:09,392 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:15:09,393 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:15:09,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-18 14:15:09,393 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:15:09,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:15:09,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1800601124, now seen corresponding path program 1 times [2024-11-18 14:15:09,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:15:09,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791807211] [2024-11-18 14:15:09,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:15:09,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:15:09,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:15:10,167 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 42 proven. 4 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-18 14:15:10,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:15:10,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791807211] [2024-11-18 14:15:10,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791807211] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:15:10,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221898354] [2024-11-18 14:15:10,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:15:10,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:15:10,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:15:10,170 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:15:10,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-18 14:15:10,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:15:10,410 INFO L255 TraceCheckSpWp]: Trace formula consists of 1146 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 14:15:10,412 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:15:10,431 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-11-18 14:15:10,431 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:15:10,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221898354] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:15:10,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:15:10,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-18 14:15:10,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145786899] [2024-11-18 14:15:10,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:15:10,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:15:10,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:15:10,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:15:10,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:15:10,433 INFO L87 Difference]: Start difference. First operand 195751 states and 336398 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16)