./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec27_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_spec27_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 4fb12138b73b283c9fdc444b2c9ebb4aa3340005d69e98d463fd0b0beb9c1e74 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 14:09:07,242 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 14:09:07,315 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 14:09:07,322 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 14:09:07,323 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 14:09:07,358 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 14:09:07,359 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 14:09:07,359 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 14:09:07,360 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 14:09:07,361 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 14:09:07,361 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 14:09:07,362 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 14:09:07,362 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 14:09:07,362 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 14:09:07,364 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 14:09:07,365 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 14:09:07,365 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 14:09:07,365 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 14:09:07,366 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 14:09:07,366 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 14:09:07,366 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 14:09:07,370 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 14:09:07,371 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 14:09:07,371 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 14:09:07,371 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 14:09:07,371 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 14:09:07,371 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 14:09:07,372 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 14:09:07,372 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 14:09:07,372 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 14:09:07,372 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 14:09:07,373 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 14:09:07,373 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:09:07,373 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 14:09:07,373 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 14:09:07,374 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 14:09:07,374 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 14:09:07,374 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 14:09:07,377 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 14:09:07,377 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 14:09:07,378 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 14:09:07,378 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 14:09:07,378 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4fb12138b73b283c9fdc444b2c9ebb4aa3340005d69e98d463fd0b0beb9c1e74 [2024-11-18 14:09:07,691 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 14:09:07,712 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 14:09:07,715 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 14:09:07,716 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 14:09:07,717 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 14:09:07,718 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec27_product28.cil.c [2024-11-18 14:09:09,243 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 14:09:09,550 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 14:09:09,551 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec27_product28.cil.c [2024-11-18 14:09:09,581 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0d579fc8/e34788d569d64222a6cb3e9e8642f9b9/FLAG8c86ddfae [2024-11-18 14:09:09,604 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0d579fc8/e34788d569d64222a6cb3e9e8642f9b9 [2024-11-18 14:09:09,607 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 14:09:09,609 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 14:09:09,610 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 14:09:09,611 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 14:09:09,616 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 14:09:09,617 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:09:09" (1/1) ... [2024-11-18 14:09:09,620 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e5b40e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:09:09, skipping insertion in model container [2024-11-18 14:09:09,620 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:09:09" (1/1) ... [2024-11-18 14:09:09,680 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 14:09:10,191 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_spec27_product28.cil.c[32786,32799] [2024-11-18 14:09:10,286 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:09:10,301 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 14:09:10,315 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"VerifyForward_spec.i","") [48] [2024-11-18 14:09:10,317 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [95] [2024-11-18 14:09:10,317 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [386] [2024-11-18 14:09:10,317 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [532] [2024-11-18 14:09:10,317 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [898] [2024-11-18 14:09:10,318 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [1300] [2024-11-18 14:09:10,318 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1622] [2024-11-18 14:09:10,318 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [1631] [2024-11-18 14:09:10,318 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1648] [2024-11-18 14:09:10,318 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [1683] [2024-11-18 14:09:10,319 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2752] [2024-11-18 14:09:10,389 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_spec27_product28.cil.c[32786,32799] [2024-11-18 14:09:10,429 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:09:10,471 INFO L204 MainTranslator]: Completed translation [2024-11-18 14:09:10,472 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:09:10 WrapperNode [2024-11-18 14:09:10,472 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 14:09:10,473 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 14:09:10,473 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 14:09:10,474 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 14:09:10,480 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:09:10" (1/1) ... [2024-11-18 14:09:10,515 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:09:10" (1/1) ... [2024-11-18 14:09:10,580 INFO L138 Inliner]: procedures = 128, calls = 197, calls flagged for inlining = 54, calls inlined = 45, statements flattened = 866 [2024-11-18 14:09:10,580 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 14:09:10,581 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 14:09:10,581 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 14:09:10,581 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 14:09:10,599 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:09:10" (1/1) ... [2024-11-18 14:09:10,599 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:09:10" (1/1) ... [2024-11-18 14:09:10,607 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:09:10" (1/1) ... [2024-11-18 14:09:10,647 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 14:09:10,648 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:09:10" (1/1) ... [2024-11-18 14:09:10,648 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:09:10" (1/1) ... [2024-11-18 14:09:10,664 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:09:10" (1/1) ... [2024-11-18 14:09:10,676 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:09:10" (1/1) ... [2024-11-18 14:09:10,689 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:09:10" (1/1) ... [2024-11-18 14:09:10,697 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:09:10" (1/1) ... [2024-11-18 14:09:10,708 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 14:09:10,710 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 14:09:10,710 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 14:09:10,710 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 14:09:10,711 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:09:10" (1/1) ... [2024-11-18 14:09:10,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:09:10,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:09:10,761 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 14:09:10,765 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 14:09:10,812 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2024-11-18 14:09:10,812 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2024-11-18 14:09:10,812 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2024-11-18 14:09:10,812 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2024-11-18 14:09:10,812 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2024-11-18 14:09:10,813 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2024-11-18 14:09:10,813 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2024-11-18 14:09:10,813 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2024-11-18 14:09:10,813 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2024-11-18 14:09:10,813 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2024-11-18 14:09:10,813 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2024-11-18 14:09:10,814 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2024-11-18 14:09:10,814 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2024-11-18 14:09:10,814 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2024-11-18 14:09:10,814 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2024-11-18 14:09:10,814 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2024-11-18 14:09:10,814 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2024-11-18 14:09:10,815 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2024-11-18 14:09:10,817 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2024-11-18 14:09:10,817 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2024-11-18 14:09:10,817 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2024-11-18 14:09:10,817 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2024-11-18 14:09:10,817 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2024-11-18 14:09:10,817 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2024-11-18 14:09:10,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 14:09:10,817 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2024-11-18 14:09:10,817 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2024-11-18 14:09:10,817 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2024-11-18 14:09:10,817 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2024-11-18 14:09:10,817 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2024-11-18 14:09:10,818 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2024-11-18 14:09:10,818 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2024-11-18 14:09:10,818 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2024-11-18 14:09:10,818 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2024-11-18 14:09:10,818 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2024-11-18 14:09:10,818 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2024-11-18 14:09:10,818 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2024-11-18 14:09:10,818 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2024-11-18 14:09:10,818 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2024-11-18 14:09:10,818 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2024-11-18 14:09:10,818 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2024-11-18 14:09:10,818 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2024-11-18 14:09:10,818 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2024-11-18 14:09:10,819 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2024-11-18 14:09:10,819 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2024-11-18 14:09:10,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 14:09:10,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 14:09:10,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-18 14:09:10,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-18 14:09:10,819 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2024-11-18 14:09:10,819 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2024-11-18 14:09:10,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 14:09:10,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 14:09:11,080 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 14:09:11,083 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 14:09:11,880 INFO L? ?]: Removed 406 outVars from TransFormulas that were not future-live. [2024-11-18 14:09:11,880 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 14:09:11,907 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 14:09:11,907 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 14:09:11,908 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:09:11 BoogieIcfgContainer [2024-11-18 14:09:11,908 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 14:09:11,910 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 14:09:11,911 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 14:09:11,915 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 14:09:11,916 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 02:09:09" (1/3) ... [2024-11-18 14:09:11,916 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14aaa4e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:09:11, skipping insertion in model container [2024-11-18 14:09:11,916 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:09:10" (2/3) ... [2024-11-18 14:09:11,917 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14aaa4e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:09:11, skipping insertion in model container [2024-11-18 14:09:11,917 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:09:11" (3/3) ... [2024-11-18 14:09:11,918 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec27_product28.cil.c [2024-11-18 14:09:11,938 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 14:09:11,938 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 14:09:12,048 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 14:09:12,054 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;@3ce2eebe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 14:09:12,054 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 14:09:12,063 INFO L276 IsEmpty]: Start isEmpty. Operand has 334 states, 258 states have (on average 1.5193798449612403) internal successors, (392), 262 states have internal predecessors, (392), 51 states have call successors, (51), 23 states have call predecessors, (51), 23 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2024-11-18 14:09:12,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-18 14:09:12,081 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:09:12,082 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:09:12,082 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:09:12,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:09:12,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1749849167, now seen corresponding path program 1 times [2024-11-18 14:09:12,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:09:12,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103784912] [2024-11-18 14:09:12,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:09:12,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:09:12,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:09:12,851 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-18 14:09:12,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:09:12,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103784912] [2024-11-18 14:09:12,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103784912] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:09:12,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952189634] [2024-11-18 14:09:12,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:09:12,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:09:12,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:09:12,856 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 14:09:12,857 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 14:09:13,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:09:13,218 INFO L255 TraceCheckSpWp]: Trace formula consists of 1133 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 14:09:13,231 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:09:13,259 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-18 14:09:13,260 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:09:13,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952189634] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:09:13,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:09:13,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 5 [2024-11-18 14:09:13,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577338236] [2024-11-18 14:09:13,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:09:13,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 14:09:13,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:09:13,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 14:09:13,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:09:13,302 INFO L87 Difference]: Start difference. First operand has 334 states, 258 states have (on average 1.5193798449612403) internal successors, (392), 262 states have internal predecessors, (392), 51 states have call successors, (51), 23 states have call predecessors, (51), 23 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) Second operand has 2 states, 2 states have (on average 38.0) internal successors, (76), 2 states have internal predecessors, (76), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 14:09:13,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:09:13,382 INFO L93 Difference]: Finished difference Result 519 states and 750 transitions. [2024-11-18 14:09:13,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 14:09:13,385 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 38.0) internal successors, (76), 2 states have internal predecessors, (76), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 139 [2024-11-18 14:09:13,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:09:13,402 INFO L225 Difference]: With dead ends: 519 [2024-11-18 14:09:13,403 INFO L226 Difference]: Without dead ends: 327 [2024-11-18 14:09:13,408 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 140 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 14:09:13,415 INFO L432 NwaCegarLoop]: 490 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, 490 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 14:09:13,416 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:09:13,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2024-11-18 14:09:13,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2024-11-18 14:09:13,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 252 states have (on average 1.5119047619047619) internal successors, (381), 255 states have internal predecessors, (381), 51 states have call successors, (51), 23 states have call predecessors, (51), 23 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-18 14:09:13,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 482 transitions. [2024-11-18 14:09:13,488 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 482 transitions. Word has length 139 [2024-11-18 14:09:13,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:09:13,489 INFO L471 AbstractCegarLoop]: Abstraction has 327 states and 482 transitions. [2024-11-18 14:09:13,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 38.0) internal successors, (76), 2 states have internal predecessors, (76), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 14:09:13,490 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 482 transitions. [2024-11-18 14:09:13,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-18 14:09:13,500 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:09:13,500 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:09:13,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 14:09:13,701 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 14:09:13,702 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:09:13,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:09:13,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1360645034, now seen corresponding path program 1 times [2024-11-18 14:09:13,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:09:13,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32338188] [2024-11-18 14:09:13,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:09:13,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:09:13,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:09:14,018 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-18 14:09:14,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:09:14,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32338188] [2024-11-18 14:09:14,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32338188] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:09:14,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906942940] [2024-11-18 14:09:14,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:09:14,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:09:14,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:09:14,022 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 14:09:14,023 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 14:09:14,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:09:14,344 INFO L255 TraceCheckSpWp]: Trace formula consists of 1134 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 14:09:14,350 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:09:14,387 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-18 14:09:14,388 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:09:14,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906942940] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:09:14,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:09:14,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 14:09:14,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667715945] [2024-11-18 14:09:14,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:09:14,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:09:14,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:09:14,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:09:14,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:09:14,394 INFO L87 Difference]: Start difference. First operand 327 states and 482 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 14:09:14,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:09:14,445 INFO L93 Difference]: Finished difference Result 509 states and 731 transitions. [2024-11-18 14:09:14,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:09:14,446 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 140 [2024-11-18 14:09:14,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:09:14,450 INFO L225 Difference]: With dead ends: 509 [2024-11-18 14:09:14,451 INFO L226 Difference]: Without dead ends: 330 [2024-11-18 14:09:14,452 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 14:09:14,453 INFO L432 NwaCegarLoop]: 480 mSDtfsCounter, 1 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 958 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 14:09:14,454 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 958 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:09:14,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2024-11-18 14:09:14,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 329. [2024-11-18 14:09:14,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 254 states have (on average 1.5078740157480315) internal successors, (383), 257 states have internal predecessors, (383), 51 states have call successors, (51), 23 states have call predecessors, (51), 23 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-18 14:09:14,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 484 transitions. [2024-11-18 14:09:14,493 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 484 transitions. Word has length 140 [2024-11-18 14:09:14,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:09:14,494 INFO L471 AbstractCegarLoop]: Abstraction has 329 states and 484 transitions. [2024-11-18 14:09:14,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 14:09:14,494 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 484 transitions. [2024-11-18 14:09:14,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-18 14:09:14,499 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:09:14,499 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:09:14,517 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 14:09:14,700 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 14:09:14,700 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:09:14,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:09:14,701 INFO L85 PathProgramCache]: Analyzing trace with hash 440032415, now seen corresponding path program 1 times [2024-11-18 14:09:14,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:09:14,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665871553] [2024-11-18 14:09:14,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:09:14,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:09:14,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:09:14,942 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-18 14:09:14,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:09:14,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665871553] [2024-11-18 14:09:14,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665871553] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:09:14,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784036480] [2024-11-18 14:09:14,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:09:14,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:09:14,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:09:14,948 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 14:09:14,949 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 14:09:15,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:09:15,269 INFO L255 TraceCheckSpWp]: Trace formula consists of 1146 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:09:15,276 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:09:15,305 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-18 14:09:15,305 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:09:15,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784036480] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:09:15,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:09:15,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 14:09:15,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770688389] [2024-11-18 14:09:15,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:09:15,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:09:15,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:09:15,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:09:15,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:09:15,309 INFO L87 Difference]: Start difference. First operand 329 states and 484 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 14:09:15,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:09:15,345 INFO L93 Difference]: Finished difference Result 683 states and 1019 transitions. [2024-11-18 14:09:15,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:09:15,346 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 146 [2024-11-18 14:09:15,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:09:15,349 INFO L225 Difference]: With dead ends: 683 [2024-11-18 14:09:15,349 INFO L226 Difference]: Without dead ends: 381 [2024-11-18 14:09:15,351 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 146 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 14:09:15,352 INFO L432 NwaCegarLoop]: 487 mSDtfsCounter, 99 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 921 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 14:09:15,353 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 921 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:09:15,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2024-11-18 14:09:15,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 373. [2024-11-18 14:09:15,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 287 states have (on average 1.5226480836236933) internal successors, (437), 290 states have internal predecessors, (437), 62 states have call successors, (62), 23 states have call predecessors, (62), 23 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2024-11-18 14:09:15,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 560 transitions. [2024-11-18 14:09:15,383 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 560 transitions. Word has length 146 [2024-11-18 14:09:15,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:09:15,384 INFO L471 AbstractCegarLoop]: Abstraction has 373 states and 560 transitions. [2024-11-18 14:09:15,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 14:09:15,388 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 560 transitions. [2024-11-18 14:09:15,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-18 14:09:15,393 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:09:15,393 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:09:15,413 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 14:09:15,593 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 14:09:15,594 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:09:15,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:09:15,595 INFO L85 PathProgramCache]: Analyzing trace with hash -782479930, now seen corresponding path program 1 times [2024-11-18 14:09:15,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:09:15,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752634767] [2024-11-18 14:09:15,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:09:15,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:09:15,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:09:15,841 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-18 14:09:15,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:09:15,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752634767] [2024-11-18 14:09:15,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752634767] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:09:15,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344720013] [2024-11-18 14:09:15,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:09:15,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:09:15,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:09:15,847 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 14:09:15,849 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 14:09:16,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:09:16,157 INFO L255 TraceCheckSpWp]: Trace formula consists of 1151 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 14:09:16,161 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:09:16,216 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-18 14:09:16,216 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:09:16,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344720013] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:09:16,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:09:16,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-18 14:09:16,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189355904] [2024-11-18 14:09:16,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:09:16,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:09:16,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:09:16,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:09:16,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:09:16,219 INFO L87 Difference]: Start difference. First operand 373 states and 560 transitions. Second operand has 5 states, 4 states have (on average 23.0) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-18 14:09:16,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:09:16,275 INFO L93 Difference]: Finished difference Result 737 states and 1110 transitions. [2024-11-18 14:09:16,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:09:16,275 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 23.0) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 147 [2024-11-18 14:09:16,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:09:16,278 INFO L225 Difference]: With dead ends: 737 [2024-11-18 14:09:16,278 INFO L226 Difference]: Without dead ends: 375 [2024-11-18 14:09:16,279 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 145 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 14:09:16,280 INFO L432 NwaCegarLoop]: 474 mSDtfsCounter, 2 mSDsluCounter, 1411 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1885 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 14:09:16,281 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1885 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:09:16,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2024-11-18 14:09:16,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 375. [2024-11-18 14:09:16,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 288 states have (on average 1.5208333333333333) internal successors, (438), 292 states have internal predecessors, (438), 62 states have call successors, (62), 23 states have call predecessors, (62), 24 states have return successors, (63), 61 states have call predecessors, (63), 61 states have call successors, (63) [2024-11-18 14:09:16,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 563 transitions. [2024-11-18 14:09:16,296 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 563 transitions. Word has length 147 [2024-11-18 14:09:16,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:09:16,296 INFO L471 AbstractCegarLoop]: Abstraction has 375 states and 563 transitions. [2024-11-18 14:09:16,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 23.0) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-18 14:09:16,297 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 563 transitions. [2024-11-18 14:09:16,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-18 14:09:16,299 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:09:16,299 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:09:16,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-18 14:09:16,500 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 14:09:16,500 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:09:16,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:09:16,501 INFO L85 PathProgramCache]: Analyzing trace with hash -860675365, now seen corresponding path program 1 times [2024-11-18 14:09:16,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:09:16,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447622027] [2024-11-18 14:09:16,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:09:16,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:09:16,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:09:16,713 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-18 14:09:16,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:09:16,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447622027] [2024-11-18 14:09:16,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447622027] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:09:16,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847824964] [2024-11-18 14:09:16,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:09:16,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:09:16,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:09:16,717 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 14:09:16,718 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 14:09:17,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:09:17,038 INFO L255 TraceCheckSpWp]: Trace formula consists of 1152 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 14:09:17,044 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:09:17,093 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-18 14:09:17,094 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:09:17,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847824964] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:09:17,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:09:17,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2024-11-18 14:09:17,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146907842] [2024-11-18 14:09:17,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:09:17,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:09:17,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:09:17,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:09:17,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:09:17,097 INFO L87 Difference]: Start difference. First operand 375 states and 563 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-18 14:09:17,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:09:17,168 INFO L93 Difference]: Finished difference Result 739 states and 1115 transitions. [2024-11-18 14:09:17,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:09:17,170 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 148 [2024-11-18 14:09:17,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:09:17,174 INFO L225 Difference]: With dead ends: 739 [2024-11-18 14:09:17,174 INFO L226 Difference]: Without dead ends: 377 [2024-11-18 14:09:17,175 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:09:17,176 INFO L432 NwaCegarLoop]: 472 mSDtfsCounter, 2 mSDsluCounter, 1399 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1871 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 14:09:17,177 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1871 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:09:17,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2024-11-18 14:09:17,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2024-11-18 14:09:17,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 289 states have (on average 1.519031141868512) internal successors, (439), 294 states have internal predecessors, (439), 62 states have call successors, (62), 23 states have call predecessors, (62), 25 states have return successors, (68), 61 states have call predecessors, (68), 61 states have call successors, (68) [2024-11-18 14:09:17,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 569 transitions. [2024-11-18 14:09:17,204 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 569 transitions. Word has length 148 [2024-11-18 14:09:17,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:09:17,205 INFO L471 AbstractCegarLoop]: Abstraction has 377 states and 569 transitions. [2024-11-18 14:09:17,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-18 14:09:17,205 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 569 transitions. [2024-11-18 14:09:17,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-18 14:09:17,209 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:09:17,209 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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 14:09:17,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-18 14:09:17,410 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 14:09:17,411 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:09:17,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:09:17,412 INFO L85 PathProgramCache]: Analyzing trace with hash -331605216, now seen corresponding path program 1 times [2024-11-18 14:09:17,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:09:17,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491814015] [2024-11-18 14:09:17,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:09:17,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:09:17,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:09:17,588 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-18 14:09:17,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:09:17,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491814015] [2024-11-18 14:09:17,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491814015] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:09:17,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:09:17,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:09:17,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503499535] [2024-11-18 14:09:17,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:09:17,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:09:17,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:09:17,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:09:17,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:09:17,592 INFO L87 Difference]: Start difference. First operand 377 states and 569 transitions. Second operand has 5 states, 4 states have (on average 22.5) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-18 14:09:17,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:09:17,635 INFO L93 Difference]: Finished difference Result 731 states and 1106 transitions. [2024-11-18 14:09:17,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:09:17,636 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 22.5) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 149 [2024-11-18 14:09:17,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:09:17,640 INFO L225 Difference]: With dead ends: 731 [2024-11-18 14:09:17,641 INFO L226 Difference]: Without dead ends: 377 [2024-11-18 14:09:17,643 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 14:09:17,643 INFO L432 NwaCegarLoop]: 475 mSDtfsCounter, 2 mSDsluCounter, 1414 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1889 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 14:09:17,644 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1889 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:09:17,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2024-11-18 14:09:17,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2024-11-18 14:09:17,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 289 states have (on average 1.519031141868512) internal successors, (439), 294 states have internal predecessors, (439), 62 states have call successors, (62), 23 states have call predecessors, (62), 25 states have return successors, (67), 61 states have call predecessors, (67), 61 states have call successors, (67) [2024-11-18 14:09:17,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 568 transitions. [2024-11-18 14:09:17,664 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 568 transitions. Word has length 149 [2024-11-18 14:09:17,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:09:17,666 INFO L471 AbstractCegarLoop]: Abstraction has 377 states and 568 transitions. [2024-11-18 14:09:17,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 22.5) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-18 14:09:17,666 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 568 transitions. [2024-11-18 14:09:17,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-18 14:09:17,669 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:09:17,669 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:09:17,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 14:09:17,673 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:09:17,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:09:17,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1164230253, now seen corresponding path program 2 times [2024-11-18 14:09:17,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:09:17,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726716632] [2024-11-18 14:09:17,674 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:09:17,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:09:17,709 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-18 14:09:17,709 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:09:17,868 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-18 14:09:17,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:09:17,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726716632] [2024-11-18 14:09:17,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726716632] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:09:17,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:09:17,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 14:09:17,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320895538] [2024-11-18 14:09:17,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:09:17,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 14:09:17,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:09:17,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 14:09:17,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:09:17,871 INFO L87 Difference]: Start difference. First operand 377 states and 568 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-18 14:09:18,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:09:18,243 INFO L93 Difference]: Finished difference Result 859 states and 1303 transitions. [2024-11-18 14:09:18,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-18 14:09:18,243 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) Word has length 150 [2024-11-18 14:09:18,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:09:18,248 INFO L225 Difference]: With dead ends: 859 [2024-11-18 14:09:18,248 INFO L226 Difference]: Without dead ends: 688 [2024-11-18 14:09:18,249 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-18 14:09:18,250 INFO L432 NwaCegarLoop]: 517 mSDtfsCounter, 516 mSDsluCounter, 2571 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 3088 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 14:09:18,250 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 3088 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 14:09:18,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2024-11-18 14:09:18,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 644. [2024-11-18 14:09:18,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 644 states, 499 states have (on average 1.5531062124248498) internal successors, (775), 505 states have internal predecessors, (775), 104 states have call successors, (104), 39 states have call predecessors, (104), 40 states have return successors, (119), 102 states have call predecessors, (119), 103 states have call successors, (119) [2024-11-18 14:09:18,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 998 transitions. [2024-11-18 14:09:18,282 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 998 transitions. Word has length 150 [2024-11-18 14:09:18,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:09:18,282 INFO L471 AbstractCegarLoop]: Abstraction has 644 states and 998 transitions. [2024-11-18 14:09:18,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-18 14:09:18,283 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 998 transitions. [2024-11-18 14:09:18,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-18 14:09:18,286 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:09:18,286 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:09:18,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 14:09:18,287 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:09:18,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:09:18,287 INFO L85 PathProgramCache]: Analyzing trace with hash 86157946, now seen corresponding path program 1 times [2024-11-18 14:09:18,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:09:18,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728987970] [2024-11-18 14:09:18,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:09:18,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:09:18,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:09:18,471 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-18 14:09:18,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:09:18,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728987970] [2024-11-18 14:09:18,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728987970] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:09:18,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:09:18,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:09:18,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687222804] [2024-11-18 14:09:18,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:09:18,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:09:18,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:09:18,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:09:18,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:09:18,474 INFO L87 Difference]: Start difference. First operand 644 states and 998 transitions. Second operand has 5 states, 4 states have (on average 23.25) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-18 14:09:18,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:09:18,529 INFO L93 Difference]: Finished difference Result 1257 states and 1956 transitions. [2024-11-18 14:09:18,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:09:18,530 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 23.25) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 151 [2024-11-18 14:09:18,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:09:18,535 INFO L225 Difference]: With dead ends: 1257 [2024-11-18 14:09:18,535 INFO L226 Difference]: Without dead ends: 648 [2024-11-18 14:09:18,537 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 14:09:18,538 INFO L432 NwaCegarLoop]: 476 mSDtfsCounter, 1 mSDsluCounter, 1416 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1892 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 14:09:18,538 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1892 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:09:18,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2024-11-18 14:09:18,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 648. [2024-11-18 14:09:18,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 501 states have (on average 1.5508982035928143) internal successors, (777), 509 states have internal predecessors, (777), 104 states have call successors, (104), 39 states have call predecessors, (104), 42 states have return successors, (122), 102 states have call predecessors, (122), 103 states have call successors, (122) [2024-11-18 14:09:18,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 1003 transitions. [2024-11-18 14:09:18,569 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 1003 transitions. Word has length 151 [2024-11-18 14:09:18,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:09:18,570 INFO L471 AbstractCegarLoop]: Abstraction has 648 states and 1003 transitions. [2024-11-18 14:09:18,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 23.25) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-18 14:09:18,570 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 1003 transitions. [2024-11-18 14:09:18,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-18 14:09:18,574 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:09:18,575 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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 14:09:18,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 14:09:18,575 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:09:18,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:09:18,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1372226140, now seen corresponding path program 1 times [2024-11-18 14:09:18,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:09:18,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112319332] [2024-11-18 14:09:18,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:09:18,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:09:18,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:09:18,712 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-18 14:09:18,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:09:18,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112319332] [2024-11-18 14:09:18,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112319332] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:09:18,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757873488] [2024-11-18 14:09:18,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:09:18,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:09:18,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:09:18,715 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 14:09:18,717 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 14:09:19,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:09:19,045 INFO L255 TraceCheckSpWp]: Trace formula consists of 1155 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 14:09:19,050 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:09:19,085 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-18 14:09:19,085 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:09:19,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757873488] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:09:19,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:09:19,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-18 14:09:19,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893206345] [2024-11-18 14:09:19,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:09:19,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:09:19,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:09:19,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:09:19,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:09:19,088 INFO L87 Difference]: Start difference. First operand 648 states and 1003 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 14:09:19,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:09:19,155 INFO L93 Difference]: Finished difference Result 1277 states and 1984 transitions. [2024-11-18 14:09:19,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:09:19,155 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 154 [2024-11-18 14:09:19,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:09:19,160 INFO L225 Difference]: With dead ends: 1277 [2024-11-18 14:09:19,160 INFO L226 Difference]: Without dead ends: 654 [2024-11-18 14:09:19,163 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 152 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 14:09:19,164 INFO L432 NwaCegarLoop]: 476 mSDtfsCounter, 1 mSDsluCounter, 1410 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1886 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 14:09:19,164 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1886 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:09:19,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2024-11-18 14:09:19,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 650. [2024-11-18 14:09:19,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 502 states have (on average 1.549800796812749) internal successors, (778), 511 states have internal predecessors, (778), 104 states have call successors, (104), 39 states have call predecessors, (104), 43 states have return successors, (125), 102 states have call predecessors, (125), 103 states have call successors, (125) [2024-11-18 14:09:19,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 1007 transitions. [2024-11-18 14:09:19,197 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 1007 transitions. Word has length 154 [2024-11-18 14:09:19,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:09:19,197 INFO L471 AbstractCegarLoop]: Abstraction has 650 states and 1007 transitions. [2024-11-18 14:09:19,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 14:09:19,198 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 1007 transitions. [2024-11-18 14:09:19,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-18 14:09:19,202 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:09:19,202 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1] [2024-11-18 14:09:19,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-18 14:09:19,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:09:19,403 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:09:19,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:09:19,404 INFO L85 PathProgramCache]: Analyzing trace with hash -219352890, now seen corresponding path program 1 times [2024-11-18 14:09:19,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:09:19,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865947999] [2024-11-18 14:09:19,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:09:19,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:09:19,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:09:19,582 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-18 14:09:19,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:09:19,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865947999] [2024-11-18 14:09:19,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865947999] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:09:19,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:09:19,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:09:19,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101025505] [2024-11-18 14:09:19,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:09:19,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:09:19,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:09:19,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:09:19,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:09:19,584 INFO L87 Difference]: Start difference. First operand 650 states and 1007 transitions. Second operand has 5 states, 4 states have (on average 23.5) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-18 14:09:19,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:09:19,637 INFO L93 Difference]: Finished difference Result 1265 states and 1968 transitions. [2024-11-18 14:09:19,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:09:19,638 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 23.5) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 152 [2024-11-18 14:09:19,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:09:19,642 INFO L225 Difference]: With dead ends: 1265 [2024-11-18 14:09:19,642 INFO L226 Difference]: Without dead ends: 654 [2024-11-18 14:09:19,644 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 14:09:19,645 INFO L432 NwaCegarLoop]: 474 mSDtfsCounter, 0 mSDsluCounter, 1411 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1885 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:09:19,645 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1885 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:09:19,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2024-11-18 14:09:19,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 650. [2024-11-18 14:09:19,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 502 states have (on average 1.549800796812749) internal successors, (778), 511 states have internal predecessors, (778), 104 states have call successors, (104), 39 states have call predecessors, (104), 43 states have return successors, (125), 102 states have call predecessors, (125), 103 states have call successors, (125) [2024-11-18 14:09:19,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 1007 transitions. [2024-11-18 14:09:19,674 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 1007 transitions. Word has length 152 [2024-11-18 14:09:19,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:09:19,674 INFO L471 AbstractCegarLoop]: Abstraction has 650 states and 1007 transitions. [2024-11-18 14:09:19,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 23.5) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-18 14:09:19,675 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 1007 transitions. [2024-11-18 14:09:19,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-18 14:09:19,679 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:09:19,679 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1] [2024-11-18 14:09:19,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 14:09:19,679 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:09:19,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:09:19,680 INFO L85 PathProgramCache]: Analyzing trace with hash 956264464, now seen corresponding path program 1 times [2024-11-18 14:09:19,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:09:19,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20292392] [2024-11-18 14:09:19,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:09:19,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:09:19,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:09:19,806 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-18 14:09:19,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:09:19,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20292392] [2024-11-18 14:09:19,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20292392] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:09:19,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014217387] [2024-11-18 14:09:19,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:09:19,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:09:19,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:09:19,808 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 14:09:19,809 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 14:09:20,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:09:20,175 INFO L255 TraceCheckSpWp]: Trace formula consists of 1156 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 14:09:20,180 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:09:20,221 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-18 14:09:20,221 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:09:20,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014217387] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:09:20,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:09:20,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-18 14:09:20,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104935180] [2024-11-18 14:09:20,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:09:20,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:09:20,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:09:20,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:09:20,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:09:20,223 INFO L87 Difference]: Start difference. First operand 650 states and 1007 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-18 14:09:20,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:09:20,294 INFO L93 Difference]: Finished difference Result 1263 states and 1965 transitions. [2024-11-18 14:09:20,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:09:20,295 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 155 [2024-11-18 14:09:20,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:09:20,300 INFO L225 Difference]: With dead ends: 1263 [2024-11-18 14:09:20,300 INFO L226 Difference]: Without dead ends: 656 [2024-11-18 14:09:20,302 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 153 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 14:09:20,303 INFO L432 NwaCegarLoop]: 472 mSDtfsCounter, 1 mSDsluCounter, 1399 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1871 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 14:09:20,303 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1871 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:09:20,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2024-11-18 14:09:20,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 654. [2024-11-18 14:09:20,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 504 states have (on average 1.5476190476190477) internal successors, (780), 515 states have internal predecessors, (780), 104 states have call successors, (104), 39 states have call predecessors, (104), 45 states have return successors, (129), 102 states have call predecessors, (129), 103 states have call successors, (129) [2024-11-18 14:09:20,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 1013 transitions. [2024-11-18 14:09:20,336 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 1013 transitions. Word has length 155 [2024-11-18 14:09:20,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:09:20,337 INFO L471 AbstractCegarLoop]: Abstraction has 654 states and 1013 transitions. [2024-11-18 14:09:20,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-18 14:09:20,337 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 1013 transitions. [2024-11-18 14:09:20,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-18 14:09:20,341 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:09:20,342 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1] [2024-11-18 14:09:20,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-18 14:09:20,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:09:20,543 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:09:20,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:09:20,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1189185212, now seen corresponding path program 1 times [2024-11-18 14:09:20,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:09:20,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989830396] [2024-11-18 14:09:20,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:09:20,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:09:20,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:09:20,700 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-18 14:09:20,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:09:20,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989830396] [2024-11-18 14:09:20,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989830396] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:09:20,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830115193] [2024-11-18 14:09:20,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:09:20,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:09:20,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:09:20,704 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 14:09:20,705 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 14:09:21,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:09:21,016 INFO L255 TraceCheckSpWp]: Trace formula consists of 1157 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:09:21,020 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:09:21,051 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-18 14:09:21,051 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:09:21,148 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-18 14:09:21,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830115193] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:09:21,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:09:21,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2024-11-18 14:09:21,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299750880] [2024-11-18 14:09:21,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:09:21,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 14:09:21,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:09:21,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 14:09:21,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:09:21,152 INFO L87 Difference]: Start difference. First operand 654 states and 1013 transitions. Second operand has 9 states, 9 states have (on average 17.0) internal successors, (153), 9 states have internal predecessors, (153), 3 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2024-11-18 14:09:21,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:09:21,347 INFO L93 Difference]: Finished difference Result 1625 states and 2602 transitions. [2024-11-18 14:09:21,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 14:09:21,348 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.0) internal successors, (153), 9 states have internal predecessors, (153), 3 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 156 [2024-11-18 14:09:21,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:09:21,355 INFO L225 Difference]: With dead ends: 1625 [2024-11-18 14:09:21,355 INFO L226 Difference]: Without dead ends: 1169 [2024-11-18 14:09:21,358 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-18 14:09:21,358 INFO L432 NwaCegarLoop]: 521 mSDtfsCounter, 297 mSDsluCounter, 3121 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 3642 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:09:21,358 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 3642 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:09:21,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2024-11-18 14:09:21,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 1133. [2024-11-18 14:09:21,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1133 states, 888 states have (on average 1.6013513513513513) internal successors, (1422), 890 states have internal predecessors, (1422), 203 states have call successors, (203), 39 states have call predecessors, (203), 41 states have return successors, (242), 206 states have call predecessors, (242), 202 states have call successors, (242) [2024-11-18 14:09:21,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1133 states to 1133 states and 1867 transitions. [2024-11-18 14:09:21,432 INFO L78 Accepts]: Start accepts. Automaton has 1133 states and 1867 transitions. Word has length 156 [2024-11-18 14:09:21,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:09:21,433 INFO L471 AbstractCegarLoop]: Abstraction has 1133 states and 1867 transitions. [2024-11-18 14:09:21,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.0) internal successors, (153), 9 states have internal predecessors, (153), 3 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2024-11-18 14:09:21,433 INFO L276 IsEmpty]: Start isEmpty. Operand 1133 states and 1867 transitions. [2024-11-18 14:09:21,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-18 14:09:21,440 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:09:21,440 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:09:21,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-18 14:09:21,641 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,SelfDestructingSolverStorable11 [2024-11-18 14:09:21,641 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:09:21,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:09:21,642 INFO L85 PathProgramCache]: Analyzing trace with hash -351015690, now seen corresponding path program 1 times [2024-11-18 14:09:21,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:09:21,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613053335] [2024-11-18 14:09:21,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:09:21,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:09:21,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:09:21,718 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-18 14:09:21,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:09:21,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613053335] [2024-11-18 14:09:21,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613053335] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:09:21,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:09:21,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:09:21,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836101751] [2024-11-18 14:09:21,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:09:21,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:09:21,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:09:21,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:09:21,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:09:21,721 INFO L87 Difference]: Start difference. First operand 1133 states and 1867 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-18 14:09:21,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:09:21,768 INFO L93 Difference]: Finished difference Result 2697 states and 4510 transitions. [2024-11-18 14:09:21,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:09:21,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 174 [2024-11-18 14:09:21,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:09:21,782 INFO L225 Difference]: With dead ends: 2697 [2024-11-18 14:09:21,782 INFO L226 Difference]: Without dead ends: 1636 [2024-11-18 14:09:21,787 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 14:09:21,787 INFO L432 NwaCegarLoop]: 491 mSDtfsCounter, 97 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 970 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 14:09:21,788 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 970 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:09:21,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2024-11-18 14:09:21,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1626. [2024-11-18 14:09:21,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1626 states, 1278 states have (on average 1.6071987480438186) internal successors, (2054), 1274 states have internal predecessors, (2054), 306 states have call successors, (306), 39 states have call predecessors, (306), 41 states have return successors, (368), 315 states have call predecessors, (368), 305 states have call successors, (368) [2024-11-18 14:09:21,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1626 states to 1626 states and 2728 transitions. [2024-11-18 14:09:21,860 INFO L78 Accepts]: Start accepts. Automaton has 1626 states and 2728 transitions. Word has length 174 [2024-11-18 14:09:21,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:09:21,861 INFO L471 AbstractCegarLoop]: Abstraction has 1626 states and 2728 transitions. [2024-11-18 14:09:21,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-18 14:09:21,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1626 states and 2728 transitions. [2024-11-18 14:09:21,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-18 14:09:21,872 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:09:21,872 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:09:21,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 14:09:21,872 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:09:21,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:09:21,873 INFO L85 PathProgramCache]: Analyzing trace with hash -934173294, now seen corresponding path program 1 times [2024-11-18 14:09:21,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:09:21,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307792085] [2024-11-18 14:09:21,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:09:21,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:09:21,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:09:21,944 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-18 14:09:21,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:09:21,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307792085] [2024-11-18 14:09:21,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307792085] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:09:21,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:09:21,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:09:21,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075932630] [2024-11-18 14:09:21,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:09:21,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:09:21,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:09:21,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:09:21,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:09:21,946 INFO L87 Difference]: Start difference. First operand 1626 states and 2728 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 14:09:22,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:09:22,006 INFO L93 Difference]: Finished difference Result 4069 states and 6893 transitions. [2024-11-18 14:09:22,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:09:22,007 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 161 [2024-11-18 14:09:22,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:09:22,024 INFO L225 Difference]: With dead ends: 4069 [2024-11-18 14:09:22,024 INFO L226 Difference]: Without dead ends: 2572 [2024-11-18 14:09:22,031 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 14:09:22,031 INFO L432 NwaCegarLoop]: 483 mSDtfsCounter, 95 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 958 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 14:09:22,031 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 958 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:09:22,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2572 states. [2024-11-18 14:09:22,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2572 to 2562. [2024-11-18 14:09:22,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2562 states, 2024 states have (on average 1.616600790513834) internal successors, (3272), 2020 states have internal predecessors, (3272), 496 states have call successors, (496), 39 states have call predecessors, (496), 41 states have return successors, (574), 505 states have call predecessors, (574), 495 states have call successors, (574) [2024-11-18 14:09:22,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2562 states to 2562 states and 4342 transitions. [2024-11-18 14:09:22,175 INFO L78 Accepts]: Start accepts. Automaton has 2562 states and 4342 transitions. Word has length 161 [2024-11-18 14:09:22,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:09:22,176 INFO L471 AbstractCegarLoop]: Abstraction has 2562 states and 4342 transitions. [2024-11-18 14:09:22,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 14:09:22,176 INFO L276 IsEmpty]: Start isEmpty. Operand 2562 states and 4342 transitions. [2024-11-18 14:09:22,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-18 14:09:22,193 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:09:22,193 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:09:22,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 14:09:22,194 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:09:22,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:09:22,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1513301782, now seen corresponding path program 1 times [2024-11-18 14:09:22,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:09:22,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032586542] [2024-11-18 14:09:22,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:09:22,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:09:22,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:09:22,390 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-18 14:09:22,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:09:22,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032586542] [2024-11-18 14:09:22,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032586542] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:09:22,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678177602] [2024-11-18 14:09:22,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:09:22,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:09:22,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:09:22,393 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 14:09:22,395 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 14:09:22,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:09:22,703 INFO L255 TraceCheckSpWp]: Trace formula consists of 1213 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:09:22,707 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:09:22,741 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-18 14:09:22,742 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:09:22,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678177602] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:09:22,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:09:22,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-18 14:09:22,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884802395] [2024-11-18 14:09:22,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:09:22,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:09:22,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:09:22,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:09:22,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:09:22,744 INFO L87 Difference]: Start difference. First operand 2562 states and 4342 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-18 14:09:22,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:09:22,869 INFO L93 Difference]: Finished difference Result 6031 states and 10310 transitions. [2024-11-18 14:09:22,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:09:22,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 176 [2024-11-18 14:09:22,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:09:22,895 INFO L225 Difference]: With dead ends: 6031 [2024-11-18 14:09:22,895 INFO L226 Difference]: Without dead ends: 3820 [2024-11-18 14:09:22,906 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 176 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 14:09:22,907 INFO L432 NwaCegarLoop]: 481 mSDtfsCounter, 91 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 953 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 14:09:22,907 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 953 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:09:22,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3820 states. [2024-11-18 14:09:23,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3820 to 3810. [2024-11-18 14:09:23,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3810 states, 3056 states have (on average 1.6197643979057592) internal successors, (4950), 3043 states have internal predecessors, (4950), 712 states have call successors, (712), 39 states have call predecessors, (712), 41 states have return successors, (837), 730 states have call predecessors, (837), 711 states have call successors, (837) [2024-11-18 14:09:23,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3810 states to 3810 states and 6499 transitions. [2024-11-18 14:09:23,099 INFO L78 Accepts]: Start accepts. Automaton has 3810 states and 6499 transitions. Word has length 176 [2024-11-18 14:09:23,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:09:23,099 INFO L471 AbstractCegarLoop]: Abstraction has 3810 states and 6499 transitions. [2024-11-18 14:09:23,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-18 14:09:23,099 INFO L276 IsEmpty]: Start isEmpty. Operand 3810 states and 6499 transitions. [2024-11-18 14:09:23,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-18 14:09:23,122 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:09:23,122 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:09:23,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-18 14:09:23,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-18 14:09:23,323 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:09:23,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:09:23,323 INFO L85 PathProgramCache]: Analyzing trace with hash -868064623, now seen corresponding path program 1 times [2024-11-18 14:09:23,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:09:23,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865122590] [2024-11-18 14:09:23,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:09:23,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:09:23,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:09:23,400 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-18 14:09:23,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:09:23,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865122590] [2024-11-18 14:09:23,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865122590] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:09:23,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:09:23,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:09:23,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526293650] [2024-11-18 14:09:23,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:09:23,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:09:23,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:09:23,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:09:23,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:09:23,403 INFO L87 Difference]: Start difference. First operand 3810 states and 6499 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 14:09:23,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:09:23,623 INFO L93 Difference]: Finished difference Result 9023 states and 15522 transitions. [2024-11-18 14:09:23,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:09:23,624 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 163 [2024-11-18 14:09:23,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:09:23,666 INFO L225 Difference]: With dead ends: 9023 [2024-11-18 14:09:23,666 INFO L226 Difference]: Without dead ends: 5838 [2024-11-18 14:09:23,683 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 14:09:23,683 INFO L432 NwaCegarLoop]: 481 mSDtfsCounter, 91 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 953 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 14:09:23,683 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 953 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:09:23,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5838 states. [2024-11-18 14:09:23,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5838 to 5828. [2024-11-18 14:09:23,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5828 states, 4754 states have (on average 1.6228439209087084) internal successors, (7715), 4729 states have internal predecessors, (7715), 1032 states have call successors, (1032), 39 states have call predecessors, (1032), 41 states have return successors, (1236), 1062 states have call predecessors, (1236), 1031 states have call successors, (1236) [2024-11-18 14:09:23,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5828 states to 5828 states and 9983 transitions. [2024-11-18 14:09:23,984 INFO L78 Accepts]: Start accepts. Automaton has 5828 states and 9983 transitions. Word has length 163 [2024-11-18 14:09:23,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:09:23,984 INFO L471 AbstractCegarLoop]: Abstraction has 5828 states and 9983 transitions. [2024-11-18 14:09:23,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 14:09:23,985 INFO L276 IsEmpty]: Start isEmpty. Operand 5828 states and 9983 transitions. [2024-11-18 14:09:24,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-18 14:09:24,086 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:09:24,086 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:09:24,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 14:09:24,086 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:09:24,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:09:24,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1588737496, now seen corresponding path program 1 times [2024-11-18 14:09:24,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:09:24,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440901627] [2024-11-18 14:09:24,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:09:24,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:09:24,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:09:24,172 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-18 14:09:24,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:09:24,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440901627] [2024-11-18 14:09:24,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440901627] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:09:24,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:09:24,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:09:24,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74967744] [2024-11-18 14:09:24,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:09:24,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:09:24,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:09:24,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:09:24,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:09:24,175 INFO L87 Difference]: Start difference. First operand 5828 states and 9983 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 14:09:24,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:09:24,389 INFO L93 Difference]: Finished difference Result 14502 states and 25001 transitions. [2024-11-18 14:09:24,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:09:24,390 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 164 [2024-11-18 14:09:24,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:09:24,459 INFO L225 Difference]: With dead ends: 14502 [2024-11-18 14:09:24,459 INFO L226 Difference]: Without dead ends: 9593 [2024-11-18 14:09:24,486 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 14:09:24,486 INFO L432 NwaCegarLoop]: 484 mSDtfsCounter, 89 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 962 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 14:09:24,487 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 962 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:09:24,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9593 states. [2024-11-18 14:09:24,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9593 to 9583. [2024-11-18 14:09:25,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9583 states, 7818 states have (on average 1.6157585060117676) internal successors, (12632), 7778 states have internal predecessors, (12632), 1723 states have call successors, (1723), 39 states have call predecessors, (1723), 41 states have return successors, (2066), 1768 states have call predecessors, (2066), 1722 states have call successors, (2066) [2024-11-18 14:09:25,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9583 states to 9583 states and 16421 transitions. [2024-11-18 14:09:25,053 INFO L78 Accepts]: Start accepts. Automaton has 9583 states and 16421 transitions. Word has length 164 [2024-11-18 14:09:25,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:09:25,053 INFO L471 AbstractCegarLoop]: Abstraction has 9583 states and 16421 transitions. [2024-11-18 14:09:25,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 14:09:25,054 INFO L276 IsEmpty]: Start isEmpty. Operand 9583 states and 16421 transitions. [2024-11-18 14:09:25,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-18 14:09:25,103 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:09:25,103 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:09:25,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-18 14:09:25,104 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:09:25,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:09:25,104 INFO L85 PathProgramCache]: Analyzing trace with hash 805998221, now seen corresponding path program 1 times [2024-11-18 14:09:25,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:09:25,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936698690] [2024-11-18 14:09:25,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:09:25,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:09:25,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:09:25,218 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-18 14:09:25,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:09:25,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936698690] [2024-11-18 14:09:25,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936698690] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:09:25,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:09:25,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:09:25,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728102382] [2024-11-18 14:09:25,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:09:25,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:09:25,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:09:25,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:09:25,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:09:25,220 INFO L87 Difference]: Start difference. First operand 9583 states and 16421 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 14:09:25,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:09:25,673 INFO L93 Difference]: Finished difference Result 24754 states and 42626 transitions. [2024-11-18 14:09:25,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:09:25,674 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 165 [2024-11-18 14:09:25,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:09:25,755 INFO L225 Difference]: With dead ends: 24754 [2024-11-18 14:09:25,755 INFO L226 Difference]: Without dead ends: 16569 [2024-11-18 14:09:25,798 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 14:09:25,799 INFO L432 NwaCegarLoop]: 488 mSDtfsCounter, 87 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 964 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 14:09:25,799 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 964 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:09:25,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16569 states. [2024-11-18 14:09:26,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16569 to 16559. [2024-11-18 14:09:26,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16559 states, 13582 states have (on average 1.61360624355765) internal successors, (21916), 13542 states have internal predecessors, (21916), 2935 states have call successors, (2935), 39 states have call predecessors, (2935), 41 states have return successors, (3467), 2980 states have call predecessors, (3467), 2934 states have call successors, (3467) [2024-11-18 14:09:26,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16559 states to 16559 states and 28318 transitions. [2024-11-18 14:09:26,804 INFO L78 Accepts]: Start accepts. Automaton has 16559 states and 28318 transitions. Word has length 165 [2024-11-18 14:09:26,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:09:26,805 INFO L471 AbstractCegarLoop]: Abstraction has 16559 states and 28318 transitions. [2024-11-18 14:09:26,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 14:09:26,806 INFO L276 IsEmpty]: Start isEmpty. Operand 16559 states and 28318 transitions. [2024-11-18 14:09:26,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-18 14:09:26,886 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:09:26,887 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:09:26,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-18 14:09:26,887 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:09:26,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:09:26,888 INFO L85 PathProgramCache]: Analyzing trace with hash 59436710, now seen corresponding path program 1 times [2024-11-18 14:09:26,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:09:26,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371201487] [2024-11-18 14:09:26,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:09:26,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:09:26,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:09:26,977 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-18 14:09:26,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:09:26,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371201487] [2024-11-18 14:09:26,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371201487] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:09:26,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:09:26,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:09:26,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60347534] [2024-11-18 14:09:26,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:09:26,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:09:26,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:09:26,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:09:26,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:09:26,982 INFO L87 Difference]: Start difference. First operand 16559 states and 28318 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 14:09:27,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:09:27,724 INFO L93 Difference]: Finished difference Result 43723 states and 75096 transitions. [2024-11-18 14:09:27,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:09:27,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 166 [2024-11-18 14:09:27,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:09:27,889 INFO L225 Difference]: With dead ends: 43723 [2024-11-18 14:09:27,890 INFO L226 Difference]: Without dead ends: 29374 [2024-11-18 14:09:27,951 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 14:09:27,952 INFO L432 NwaCegarLoop]: 502 mSDtfsCounter, 85 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 982 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 14:09:27,952 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 982 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:09:27,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29374 states. [2024-11-18 14:09:29,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29374 to 29364. [2024-11-18 14:09:29,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29364 states, 24056 states have (on average 1.6039241769205188) internal successors, (38584), 23998 states have internal predecessors, (38584), 5266 states have call successors, (5266), 39 states have call predecessors, (5266), 41 states have return successors, (6217), 5329 states have call predecessors, (6217), 5265 states have call successors, (6217) [2024-11-18 14:09:29,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29364 states to 29364 states and 50067 transitions. [2024-11-18 14:09:29,601 INFO L78 Accepts]: Start accepts. Automaton has 29364 states and 50067 transitions. Word has length 166 [2024-11-18 14:09:29,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:09:29,602 INFO L471 AbstractCegarLoop]: Abstraction has 29364 states and 50067 transitions. [2024-11-18 14:09:29,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 14:09:29,602 INFO L276 IsEmpty]: Start isEmpty. Operand 29364 states and 50067 transitions. [2024-11-18 14:09:29,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-18 14:09:29,721 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:09:29,721 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:09:29,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-18 14:09:29,722 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:09:29,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:09:29,722 INFO L85 PathProgramCache]: Analyzing trace with hash -2117405716, now seen corresponding path program 1 times [2024-11-18 14:09:29,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:09:29,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294296626] [2024-11-18 14:09:29,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:09:29,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:09:29,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:09:29,809 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-18 14:09:29,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:09:29,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294296626] [2024-11-18 14:09:29,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294296626] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:09:29,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:09:29,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:09:29,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621623441] [2024-11-18 14:09:29,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:09:29,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:09:29,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:09:29,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:09:29,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:09:29,815 INFO L87 Difference]: Start difference. First operand 29364 states and 50067 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 14:09:31,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:09:31,217 INFO L93 Difference]: Finished difference Result 79214 states and 135704 transitions. [2024-11-18 14:09:31,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:09:31,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 167 [2024-11-18 14:09:31,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:09:31,853 INFO L225 Difference]: With dead ends: 79214 [2024-11-18 14:09:31,853 INFO L226 Difference]: Without dead ends: 52871 [2024-11-18 14:09:31,939 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 14:09:31,941 INFO L432 NwaCegarLoop]: 481 mSDtfsCounter, 83 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 956 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 14:09:31,942 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 956 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:09:31,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52871 states. [2024-11-18 14:09:34,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52871 to 52861. [2024-11-18 14:09:34,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52861 states, 43557 states have (on average 1.5993296140689213) internal successors, (69662), 43478 states have internal predecessors, (69662), 9262 states have call successors, (9262), 39 states have call predecessors, (9262), 41 states have return successors, (11020), 9346 states have call predecessors, (11020), 9261 states have call successors, (11020) [2024-11-18 14:09:34,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52861 states to 52861 states and 89944 transitions. [2024-11-18 14:09:34,690 INFO L78 Accepts]: Start accepts. Automaton has 52861 states and 89944 transitions. Word has length 167 [2024-11-18 14:09:34,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:09:34,691 INFO L471 AbstractCegarLoop]: Abstraction has 52861 states and 89944 transitions. [2024-11-18 14:09:34,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 14:09:34,691 INFO L276 IsEmpty]: Start isEmpty. Operand 52861 states and 89944 transitions. [2024-11-18 14:09:34,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-11-18 14:09:34,929 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:09:34,930 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, 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 14:09:34,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-18 14:09:34,930 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:09:34,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:09:34,931 INFO L85 PathProgramCache]: Analyzing trace with hash -281081837, now seen corresponding path program 1 times [2024-11-18 14:09:34,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:09:34,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200216391] [2024-11-18 14:09:34,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:09:34,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:09:34,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:09:35,645 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 42 proven. 4 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-18 14:09:35,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:09:35,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200216391] [2024-11-18 14:09:35,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200216391] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:09:35,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133127054] [2024-11-18 14:09:35,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:09:35,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:09:35,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:09:35,648 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 14:09:35,650 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 14:09:36,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:09:36,013 INFO L255 TraceCheckSpWp]: Trace formula consists of 1236 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 14:09:36,018 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:09:36,047 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-18 14:09:36,048 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:09:36,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133127054] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:09:36,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:09:36,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-18 14:09:36,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937505632] [2024-11-18 14:09:36,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:09:36,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:09:36,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:09:36,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:09:36,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:09:36,051 INFO L87 Difference]: Start difference. First operand 52861 states and 89944 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-18 14:09:37,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:09:37,545 INFO L93 Difference]: Finished difference Result 100898 states and 172037 transitions. [2024-11-18 14:09:37,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:09:37,546 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 182 [2024-11-18 14:09:37,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:09:37,800 INFO L225 Difference]: With dead ends: 100898 [2024-11-18 14:09:37,800 INFO L226 Difference]: Without dead ends: 52871 [2024-11-18 14:09:38,146 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 182 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 14:09:38,148 INFO L432 NwaCegarLoop]: 595 mSDtfsCounter, 92 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:09:38,148 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 1087 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:09:38,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52871 states. [2024-11-18 14:09:39,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52871 to 52861. [2024-11-18 14:09:39,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52861 states, 43557 states have (on average 1.587276442362881) internal successors, (69137), 43478 states have internal predecessors, (69137), 9262 states have call successors, (9262), 39 states have call predecessors, (9262), 41 states have return successors, (11020), 9346 states have call predecessors, (11020), 9261 states have call successors, (11020) [2024-11-18 14:09:40,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52861 states to 52861 states and 89419 transitions. [2024-11-18 14:09:40,536 INFO L78 Accepts]: Start accepts. Automaton has 52861 states and 89419 transitions. Word has length 182 [2024-11-18 14:09:40,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:09:40,537 INFO L471 AbstractCegarLoop]: Abstraction has 52861 states and 89419 transitions. [2024-11-18 14:09:40,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-18 14:09:40,538 INFO L276 IsEmpty]: Start isEmpty. Operand 52861 states and 89419 transitions. [2024-11-18 14:09:40,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-11-18 14:09:40,677 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:09:40,678 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:09:40,698 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-18 14:09:40,878 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,SelfDestructingSolverStorable20 [2024-11-18 14:09:40,880 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:09:40,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:09:40,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1588127286, now seen corresponding path program 1 times [2024-11-18 14:09:40,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:09:40,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586847644] [2024-11-18 14:09:40,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:09:40,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:09:40,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:09:41,072 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-18 14:09:41,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:09:41,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586847644] [2024-11-18 14:09:41,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586847644] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:09:41,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193701080] [2024-11-18 14:09:41,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:09:41,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:09:41,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:09:41,075 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 14:09:41,077 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 14:09:41,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:09:41,446 INFO L255 TraceCheckSpWp]: Trace formula consists of 1243 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:09:41,451 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:09:41,509 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-18 14:09:41,510 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:09:41,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193701080] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:09:41,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:09:41,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-18 14:09:41,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402764136] [2024-11-18 14:09:41,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:09:41,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:09:41,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:09:41,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:09:41,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:09:41,512 INFO L87 Difference]: Start difference. First operand 52861 states and 89419 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-18 14:09:44,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:09:44,009 INFO L93 Difference]: Finished difference Result 146241 states and 247663 transitions. [2024-11-18 14:09:44,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:09:44,013 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 182 [2024-11-18 14:09:44,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:09:44,428 INFO L225 Difference]: With dead ends: 146241 [2024-11-18 14:09:44,428 INFO L226 Difference]: Without dead ends: 97893 [2024-11-18 14:09:44,570 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 182 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 14:09:44,571 INFO L432 NwaCegarLoop]: 488 mSDtfsCounter, 79 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 964 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 14:09:44,571 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 964 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:09:44,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97893 states. [2024-11-18 14:09:48,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97893 to 97883. [2024-11-18 14:09:48,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97883 states, 81155 states have (on average 1.579976588010597) internal successors, (128223), 81076 states have internal predecessors, (128223), 16686 states have call successors, (16686), 39 states have call predecessors, (16686), 41 states have return successors, (19508), 16770 states have call predecessors, (19508), 16685 states have call successors, (19508) [2024-11-18 14:09:48,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97883 states to 97883 states and 164417 transitions. [2024-11-18 14:09:48,862 INFO L78 Accepts]: Start accepts. Automaton has 97883 states and 164417 transitions. Word has length 182 [2024-11-18 14:09:48,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:09:48,863 INFO L471 AbstractCegarLoop]: Abstraction has 97883 states and 164417 transitions. [2024-11-18 14:09:48,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-18 14:09:48,864 INFO L276 IsEmpty]: Start isEmpty. Operand 97883 states and 164417 transitions. [2024-11-18 14:09:49,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-11-18 14:09:49,113 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:09:49,113 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:09:49,131 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 14:09:49,314 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,SelfDestructingSolverStorable21 [2024-11-18 14:09:49,315 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:09:49,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:09:49,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1183184038, now seen corresponding path program 1 times [2024-11-18 14:09:49,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:09:49,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27308917] [2024-11-18 14:09:49,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:09:49,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:09:49,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:09:50,019 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-18 14:09:50,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:09:50,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27308917] [2024-11-18 14:09:50,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27308917] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:09:50,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122230976] [2024-11-18 14:09:50,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:09:50,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:09:50,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:09:50,025 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 14:09:50,027 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 14:09:50,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:09:50,473 INFO L255 TraceCheckSpWp]: Trace formula consists of 1248 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:09:50,482 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:09:50,565 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-18 14:09:50,566 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:09:50,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122230976] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:09:50,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:09:50,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-18 14:09:50,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214367759] [2024-11-18 14:09:50,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:09:50,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:09:50,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:09:50,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:09:50,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:09:50,574 INFO L87 Difference]: Start difference. First operand 97883 states and 164417 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-18 14:09:54,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:09:54,020 INFO L93 Difference]: Finished difference Result 183213 states and 308314 transitions. [2024-11-18 14:09:54,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:09:54,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 183 [2024-11-18 14:09:54,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:09:55,059 INFO L225 Difference]: With dead ends: 183213 [2024-11-18 14:09:55,059 INFO L226 Difference]: Without dead ends: 182958 [2024-11-18 14:09:55,122 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:09:55,123 INFO L432 NwaCegarLoop]: 483 mSDtfsCounter, 74 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 962 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:09:55,123 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 962 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:09:55,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182958 states. [2024-11-18 14:10:01,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182958 to 182948. [2024-11-18 14:10:01,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182948 states, 152725 states have (on average 1.5714519561302995) internal successors, (240000), 152622 states have internal predecessors, (240000), 30181 states have call successors, (30181), 39 states have call predecessors, (30181), 41 states have return successors, (35610), 30289 states have call predecessors, (35610), 30180 states have call successors, (35610) [2024-11-18 14:10:02,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182948 states to 182948 states and 305791 transitions. [2024-11-18 14:10:02,487 INFO L78 Accepts]: Start accepts. Automaton has 182948 states and 305791 transitions. Word has length 183 [2024-11-18 14:10:02,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:10:02,488 INFO L471 AbstractCegarLoop]: Abstraction has 182948 states and 305791 transitions. [2024-11-18 14:10:02,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-18 14:10:02,489 INFO L276 IsEmpty]: Start isEmpty. Operand 182948 states and 305791 transitions. [2024-11-18 14:10:02,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-18 14:10:02,736 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:10:02,736 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:10:02,752 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 14:10:02,937 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,SelfDestructingSolverStorable22 [2024-11-18 14:10:02,937 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:10:02,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:10:02,938 INFO L85 PathProgramCache]: Analyzing trace with hash 932390373, now seen corresponding path program 1 times [2024-11-18 14:10:02,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:10:02,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826029497] [2024-11-18 14:10:02,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:10:02,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:10:02,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:10:03,252 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-18 14:10:03,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:10:03,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826029497] [2024-11-18 14:10:03,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826029497] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:10:03,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354585452] [2024-11-18 14:10:03,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:10:03,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:10:03,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:10:03,255 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 14:10:03,257 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 14:10:03,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:10:03,635 INFO L255 TraceCheckSpWp]: Trace formula consists of 1209 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-18 14:10:03,640 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:10:03,865 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-18 14:10:03,866 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:10:04,257 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-18 14:10:04,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354585452] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:10:04,257 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:10:04,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 27 [2024-11-18 14:10:04,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048517879] [2024-11-18 14:10:04,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:10:04,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-18 14:10:04,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:10:04,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-18 14:10:04,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=636, Unknown=0, NotChecked=0, Total=702 [2024-11-18 14:10:04,264 INFO L87 Difference]: Start difference. First operand 182948 states and 305791 transitions. Second operand has 27 states, 26 states have (on average 10.153846153846153) internal successors, (264), 23 states have internal predecessors, (264), 9 states have call successors, (50), 8 states have call predecessors, (50), 11 states have return successors, (45), 11 states have call predecessors, (45), 9 states have call successors, (45)