./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec7_product28.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/email_spec7_product28.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f29cc89d3ee64e709bcde3f8f1e5c1c29a2d05992b7eca470a9d177af894449a --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 05:35:58,601 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 05:35:58,647 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 05:35:58,651 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 05:35:58,652 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 05:35:58,673 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 05:35:58,674 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 05:35:58,675 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 05:35:58,675 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 05:35:58,675 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 05:35:58,676 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 05:35:58,676 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 05:35:58,676 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 05:35:58,676 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 05:35:58,677 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 05:35:58,677 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 05:35:58,677 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 05:35:58,677 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 05:35:58,677 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 05:35:58,677 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 05:35:58,678 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 05:35:58,678 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 05:35:58,678 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 05:35:58,678 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 05:35:58,678 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 05:35:58,678 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 05:35:58,678 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 05:35:58,678 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 05:35:58,678 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 05:35:58,678 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 05:35:58,678 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 05:35:58,678 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 05:35:58,679 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 05:35:58,679 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 05:35:58,679 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 05:35:58,679 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 05:35:58,679 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 05:35:58,679 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 05:35:58,679 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 05:35:58,679 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 05:35:58,680 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 05:35:58,680 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 05:35:58,680 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 05:35:58,680 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f29cc89d3ee64e709bcde3f8f1e5c1c29a2d05992b7eca470a9d177af894449a [2025-03-08 05:35:58,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 05:35:58,902 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 05:35:58,904 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 05:35:58,905 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 05:35:58,905 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 05:35:58,907 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec7_product28.cil.c [2025-03-08 05:36:00,145 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60519411b/bcd509da9de74883a724998ffd396b00/FLAG2b4b14785 [2025-03-08 05:36:00,412 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 05:36:00,413 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec7_product28.cil.c [2025-03-08 05:36:00,431 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60519411b/bcd509da9de74883a724998ffd396b00/FLAG2b4b14785 [2025-03-08 05:36:00,445 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60519411b/bcd509da9de74883a724998ffd396b00 [2025-03-08 05:36:00,447 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 05:36:00,448 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 05:36:00,449 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 05:36:00,449 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 05:36:00,452 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 05:36:00,453 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:36:00" (1/1) ... [2025-03-08 05:36:00,454 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17746c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:36:00, skipping insertion in model container [2025-03-08 05:36:00,454 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:36:00" (1/1) ... [2025-03-08 05:36:00,505 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 05:36:00,622 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec7_product28.cil.c[1542,1555] [2025-03-08 05:36:00,925 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 05:36:00,937 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 05:36:00,945 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [48] [2025-03-08 05:36:00,946 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [57] [2025-03-08 05:36:00,946 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [217] [2025-03-08 05:36:00,947 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [255] [2025-03-08 05:36:00,947 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [591] [2025-03-08 05:36:00,947 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [871] [2025-03-08 05:36:00,947 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EncryptVerify_spec.i","") [1084] [2025-03-08 05:36:00,947 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1102] [2025-03-08 05:36:00,947 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [1468] [2025-03-08 05:36:00,947 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [1485] [2025-03-08 05:36:00,947 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [2554] [2025-03-08 05:36:00,950 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec7_product28.cil.c[1542,1555] [2025-03-08 05:36:01,033 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 05:36:01,061 INFO L204 MainTranslator]: Completed translation [2025-03-08 05:36:01,062 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:36:01 WrapperNode [2025-03-08 05:36:01,062 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 05:36:01,063 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 05:36:01,063 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 05:36:01,064 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 05:36:01,071 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:36:01" (1/1) ... [2025-03-08 05:36:01,100 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:36:01" (1/1) ... [2025-03-08 05:36:01,134 INFO L138 Inliner]: procedures = 128, calls = 195, calls flagged for inlining = 55, calls inlined = 45, statements flattened = 842 [2025-03-08 05:36:01,134 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 05:36:01,135 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 05:36:01,135 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 05:36:01,135 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 05:36:01,141 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:36:01" (1/1) ... [2025-03-08 05:36:01,142 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:36:01" (1/1) ... [2025-03-08 05:36:01,145 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:36:01" (1/1) ... [2025-03-08 05:36:01,160 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]. [2025-03-08 05:36:01,160 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:36:01" (1/1) ... [2025-03-08 05:36:01,160 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:36:01" (1/1) ... [2025-03-08 05:36:01,169 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:36:01" (1/1) ... [2025-03-08 05:36:01,171 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:36:01" (1/1) ... [2025-03-08 05:36:01,173 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:36:01" (1/1) ... [2025-03-08 05:36:01,175 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:36:01" (1/1) ... [2025-03-08 05:36:01,178 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 05:36:01,179 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 05:36:01,179 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 05:36:01,179 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 05:36:01,180 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:36:01" (1/1) ... [2025-03-08 05:36:01,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 05:36:01,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:36:01,238 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) [2025-03-08 05:36:01,240 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 [2025-03-08 05:36:01,255 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2025-03-08 05:36:01,255 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2025-03-08 05:36:01,255 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2025-03-08 05:36:01,255 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2025-03-08 05:36:01,255 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2025-03-08 05:36:01,255 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2025-03-08 05:36:01,255 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2025-03-08 05:36:01,255 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2025-03-08 05:36:01,255 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2025-03-08 05:36:01,255 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2025-03-08 05:36:01,255 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2025-03-08 05:36:01,255 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2025-03-08 05:36:01,255 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2025-03-08 05:36:01,255 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2025-03-08 05:36:01,255 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2025-03-08 05:36:01,256 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2025-03-08 05:36:01,256 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2025-03-08 05:36:01,256 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2025-03-08 05:36:01,256 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2025-03-08 05:36:01,256 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2025-03-08 05:36:01,256 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2025-03-08 05:36:01,256 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2025-03-08 05:36:01,256 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2025-03-08 05:36:01,256 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2025-03-08 05:36:01,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 05:36:01,256 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2025-03-08 05:36:01,256 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2025-03-08 05:36:01,256 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2025-03-08 05:36:01,257 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2025-03-08 05:36:01,257 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2025-03-08 05:36:01,257 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2025-03-08 05:36:01,257 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2025-03-08 05:36:01,257 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2025-03-08 05:36:01,257 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2025-03-08 05:36:01,257 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2025-03-08 05:36:01,257 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2025-03-08 05:36:01,257 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2025-03-08 05:36:01,257 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2025-03-08 05:36:01,257 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2025-03-08 05:36:01,257 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2025-03-08 05:36:01,257 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2025-03-08 05:36:01,257 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2025-03-08 05:36:01,257 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2025-03-08 05:36:01,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 05:36:01,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-08 05:36:01,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-08 05:36:01,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-08 05:36:01,258 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2025-03-08 05:36:01,258 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2025-03-08 05:36:01,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 05:36:01,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 05:36:01,410 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 05:36:01,415 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 05:36:01,583 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2531-1: getClientId_#res#1 := getClientId_~retValue_acc~32#1; [2025-03-08 05:36:01,590 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2858: #res := ~retValue_acc~41; [2025-03-08 05:36:01,599 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L505: #res := ~retValue_acc~10; [2025-03-08 05:36:01,620 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2143-1: getClientKeyringSize_#res#1 := getClientKeyringSize_~retValue_acc~26#1; [2025-03-08 05:36:01,621 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2188: #res#1 := ~retValue_acc~27#1; [2025-03-08 05:36:01,655 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2412: #res := ~retValue_acc~30; [2025-03-08 05:36:01,663 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2096: #res := ~retValue_acc~25; [2025-03-08 05:36:01,679 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L214-1: createEmail_#res#1 := createEmail_~retValue_acc~3#1; [2025-03-08 05:36:01,692 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2784: #res := ~retValue_acc~39; [2025-03-08 05:36:01,705 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2821: #res := ~retValue_acc~40; [2025-03-08 05:36:01,714 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2895: #res := ~retValue_acc~42; [2025-03-08 05:36:01,729 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2669: #res := ~retValue_acc~36; [2025-03-08 05:36:01,944 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L252-1: valid_product_#res#1 := valid_product_~retValue_acc~5#1; [2025-03-08 05:36:01,944 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2358-1: getClientKeyringPublicKey_#res#1 := getClientKeyringPublicKey_~retValue_acc~29#1; [2025-03-08 05:36:01,944 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2251-1: getClientKeyringUser_#res#1 := getClientKeyringUser_~retValue_acc~28#1; [2025-03-08 05:36:01,944 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L462-1: is_queue_empty_#res#1 := is_queue_empty_~retValue_acc~7#1; [2025-03-08 05:36:01,944 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L471-1: get_queued_client_#res#1 := get_queued_client_~retValue_acc~8#1; [2025-03-08 05:36:01,944 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L480-1: get_queued_email_#res#1 := get_queued_email_~retValue_acc~9#1; [2025-03-08 05:36:01,950 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2632: #res := ~retValue_acc~35; [2025-03-08 05:36:01,958 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L190: #res#1 := ~retValue_acc~1#1; [2025-03-08 05:36:01,958 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L170-1: isReadable__wrappee__Keys_#res#1 := isReadable__wrappee__Keys_~retValue_acc~0#1; [2025-03-08 05:36:02,084 INFO L? ?]: Removed 395 outVars from TransFormulas that were not future-live. [2025-03-08 05:36:02,084 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 05:36:02,098 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 05:36:02,098 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 05:36:02,098 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:36:02 BoogieIcfgContainer [2025-03-08 05:36:02,098 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 05:36:02,100 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 05:36:02,100 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 05:36:02,104 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 05:36:02,104 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 05:36:00" (1/3) ... [2025-03-08 05:36:02,105 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b8c8b5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:36:02, skipping insertion in model container [2025-03-08 05:36:02,105 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:36:01" (2/3) ... [2025-03-08 05:36:02,106 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b8c8b5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:36:02, skipping insertion in model container [2025-03-08 05:36:02,106 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:36:02" (3/3) ... [2025-03-08 05:36:02,107 INFO L128 eAbstractionObserver]: Analyzing ICFG email_spec7_product28.cil.c [2025-03-08 05:36:02,120 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 05:36:02,123 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG email_spec7_product28.cil.c that has 23 procedures, 322 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 05:36:02,179 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 05:36:02,189 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;@d175424, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 05:36:02,189 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 05:36:02,194 INFO L276 IsEmpty]: Start isEmpty. Operand has 322 states, 249 states have (on average 1.5220883534136547) internal successors, (379), 253 states have internal predecessors, (379), 49 states have call successors, (49), 22 states have call predecessors, (49), 22 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2025-03-08 05:36:02,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2025-03-08 05:36:02,206 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:36:02,207 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:36:02,208 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:36:02,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:36:02,213 INFO L85 PathProgramCache]: Analyzing trace with hash 2130873733, now seen corresponding path program 1 times [2025-03-08 05:36:02,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:36:02,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406475934] [2025-03-08 05:36:02,220 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:36:02,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:36:02,322 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 117 statements into 1 equivalence classes. [2025-03-08 05:36:02,377 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 117 of 117 statements. [2025-03-08 05:36:02,377 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:36:02,377 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:36:02,811 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-08 05:36:02,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:36:02,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406475934] [2025-03-08 05:36:02,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406475934] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:36:02,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182529283] [2025-03-08 05:36:02,813 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:36:02,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:36:02,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:36:02,815 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) [2025-03-08 05:36:02,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 05:36:02,941 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 117 statements into 1 equivalence classes. [2025-03-08 05:36:03,044 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 117 of 117 statements. [2025-03-08 05:36:03,044 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:36:03,044 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:36:03,049 INFO L256 TraceCheckSpWp]: Trace formula consists of 1042 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-08 05:36:03,056 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:36:03,084 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-03-08 05:36:03,085 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:36:03,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182529283] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:36:03,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:36:03,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-03-08 05:36:03,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715633144] [2025-03-08 05:36:03,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:36:03,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 05:36:03,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:36:03,105 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 05:36:03,106 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 05:36:03,108 INFO L87 Difference]: Start difference. First operand has 322 states, 249 states have (on average 1.5220883534136547) internal successors, (379), 253 states have internal predecessors, (379), 49 states have call successors, (49), 22 states have call predecessors, (49), 22 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:36:03,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:36:03,152 INFO L93 Difference]: Finished difference Result 498 states and 722 transitions. [2025-03-08 05:36:03,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 05:36:03,153 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 117 [2025-03-08 05:36:03,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:36:03,160 INFO L225 Difference]: With dead ends: 498 [2025-03-08 05:36:03,160 INFO L226 Difference]: Without dead ends: 316 [2025-03-08 05:36:03,162 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 05:36:03,164 INFO L435 NwaCegarLoop]: 473 mSDtfsCounter, 0 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 943 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 [2025-03-08 05:36:03,164 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 943 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:36:03,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2025-03-08 05:36:03,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 316. [2025-03-08 05:36:03,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 244 states have (on average 1.5163934426229508) internal successors, (370), 247 states have internal predecessors, (370), 49 states have call successors, (49), 22 states have call predecessors, (49), 22 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2025-03-08 05:36:03,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 467 transitions. [2025-03-08 05:36:03,220 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 467 transitions. Word has length 117 [2025-03-08 05:36:03,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:36:03,221 INFO L471 AbstractCegarLoop]: Abstraction has 316 states and 467 transitions. [2025-03-08 05:36:03,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:36:03,222 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 467 transitions. [2025-03-08 05:36:03,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2025-03-08 05:36:03,228 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:36:03,228 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:36:03,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-08 05:36:03,429 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 [2025-03-08 05:36:03,429 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:36:03,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:36:03,430 INFO L85 PathProgramCache]: Analyzing trace with hash 154711293, now seen corresponding path program 1 times [2025-03-08 05:36:03,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:36:03,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021592396] [2025-03-08 05:36:03,431 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:36:03,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:36:03,451 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 121 statements into 1 equivalence classes. [2025-03-08 05:36:03,466 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 121 of 121 statements. [2025-03-08 05:36:03,467 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:36:03,467 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:36:03,658 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-03-08 05:36:03,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:36:03,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021592396] [2025-03-08 05:36:03,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021592396] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:36:03,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956615728] [2025-03-08 05:36:03,659 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:36:03,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:36:03,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:36:03,661 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) [2025-03-08 05:36:03,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 05:36:03,787 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 121 statements into 1 equivalence classes. [2025-03-08 05:36:03,908 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 121 of 121 statements. [2025-03-08 05:36:03,908 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:36:03,908 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:36:03,911 INFO L256 TraceCheckSpWp]: Trace formula consists of 1053 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 05:36:03,914 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:36:03,937 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-03-08 05:36:03,937 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:36:03,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956615728] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:36:03,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:36:03,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-03-08 05:36:03,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738264207] [2025-03-08 05:36:03,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:36:03,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 05:36:03,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:36:03,939 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 05:36:03,939 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 05:36:03,939 INFO L87 Difference]: Start difference. First operand 316 states and 467 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:36:03,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:36:03,980 INFO L93 Difference]: Finished difference Result 656 states and 984 transitions. [2025-03-08 05:36:03,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 05:36:03,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 121 [2025-03-08 05:36:03,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:36:03,984 INFO L225 Difference]: With dead ends: 656 [2025-03-08 05:36:03,985 INFO L226 Difference]: Without dead ends: 366 [2025-03-08 05:36:03,988 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 05:36:03,988 INFO L435 NwaCegarLoop]: 473 mSDtfsCounter, 99 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 892 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 [2025-03-08 05:36:03,988 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 892 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:36:03,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2025-03-08 05:36:04,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 358. [2025-03-08 05:36:04,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 275 states have (on average 1.5345454545454544) internal successors, (422), 278 states have internal predecessors, (422), 60 states have call successors, (60), 22 states have call predecessors, (60), 22 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2025-03-08 05:36:04,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 541 transitions. [2025-03-08 05:36:04,013 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 541 transitions. Word has length 121 [2025-03-08 05:36:04,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:36:04,013 INFO L471 AbstractCegarLoop]: Abstraction has 358 states and 541 transitions. [2025-03-08 05:36:04,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:36:04,014 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 541 transitions. [2025-03-08 05:36:04,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2025-03-08 05:36:04,017 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:36:04,017 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:36:04,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-08 05:36:04,217 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 [2025-03-08 05:36:04,218 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:36:04,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:36:04,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1071629737, now seen corresponding path program 1 times [2025-03-08 05:36:04,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:36:04,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079041521] [2025-03-08 05:36:04,219 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:36:04,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:36:04,238 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 122 statements into 1 equivalence classes. [2025-03-08 05:36:04,244 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 122 of 122 statements. [2025-03-08 05:36:04,244 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:36:04,244 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:36:04,399 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-03-08 05:36:04,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:36:04,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079041521] [2025-03-08 05:36:04,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079041521] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:36:04,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819608707] [2025-03-08 05:36:04,400 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:36:04,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:36:04,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:36:04,402 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) [2025-03-08 05:36:04,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 05:36:04,519 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 122 statements into 1 equivalence classes. [2025-03-08 05:36:04,616 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 122 of 122 statements. [2025-03-08 05:36:04,616 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:36:04,616 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:36:04,621 INFO L256 TraceCheckSpWp]: Trace formula consists of 1058 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-08 05:36:04,626 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:36:04,677 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-03-08 05:36:04,678 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:36:04,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819608707] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:36:04,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:36:04,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2025-03-08 05:36:04,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154382688] [2025-03-08 05:36:04,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:36:04,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 05:36:04,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:36:04,679 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 05:36:04,680 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-03-08 05:36:04,680 INFO L87 Difference]: Start difference. First operand 358 states and 541 transitions. Second operand has 5 states, 4 states have (on average 19.5) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-08 05:36:04,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:36:04,752 INFO L93 Difference]: Finished difference Result 707 states and 1072 transitions. [2025-03-08 05:36:04,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:36:04,755 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.5) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 122 [2025-03-08 05:36:04,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:36:04,758 INFO L225 Difference]: With dead ends: 707 [2025-03-08 05:36:04,758 INFO L226 Difference]: Without dead ends: 360 [2025-03-08 05:36:04,759 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-03-08 05:36:04,762 INFO L435 NwaCegarLoop]: 458 mSDtfsCounter, 2 mSDsluCounter, 1363 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1821 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 [2025-03-08 05:36:04,762 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1821 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:36:04,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2025-03-08 05:36:04,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2025-03-08 05:36:04,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 276 states have (on average 1.5326086956521738) internal successors, (423), 280 states have internal predecessors, (423), 60 states have call successors, (60), 22 states have call predecessors, (60), 23 states have return successors, (61), 59 states have call predecessors, (61), 59 states have call successors, (61) [2025-03-08 05:36:04,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 544 transitions. [2025-03-08 05:36:04,791 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 544 transitions. Word has length 122 [2025-03-08 05:36:04,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:36:04,792 INFO L471 AbstractCegarLoop]: Abstraction has 360 states and 544 transitions. [2025-03-08 05:36:04,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.5) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-08 05:36:04,792 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 544 transitions. [2025-03-08 05:36:04,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2025-03-08 05:36:04,795 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:36:04,795 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:36:04,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-08 05:36:05,000 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 [2025-03-08 05:36:05,000 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:36:05,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:36:05,002 INFO L85 PathProgramCache]: Analyzing trace with hash -903421670, now seen corresponding path program 1 times [2025-03-08 05:36:05,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:36:05,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343709373] [2025-03-08 05:36:05,002 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:36:05,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:36:05,029 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 123 statements into 1 equivalence classes. [2025-03-08 05:36:05,062 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 123 of 123 statements. [2025-03-08 05:36:05,063 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:36:05,063 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:36:05,214 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-08 05:36:05,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:36:05,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343709373] [2025-03-08 05:36:05,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343709373] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:36:05,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780786807] [2025-03-08 05:36:05,215 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:36:05,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:36:05,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:36:05,217 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) [2025-03-08 05:36:05,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-08 05:36:05,338 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 123 statements into 1 equivalence classes. [2025-03-08 05:36:05,429 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 123 of 123 statements. [2025-03-08 05:36:05,429 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:36:05,429 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:36:05,435 INFO L256 TraceCheckSpWp]: Trace formula consists of 1059 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-08 05:36:05,438 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:36:05,482 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-03-08 05:36:05,482 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:36:05,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780786807] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:36:05,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:36:05,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2025-03-08 05:36:05,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33019665] [2025-03-08 05:36:05,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:36:05,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 05:36:05,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:36:05,484 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 05:36:05,485 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2025-03-08 05:36:05,485 INFO L87 Difference]: Start difference. First operand 360 states and 544 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-08 05:36:05,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:36:05,554 INFO L93 Difference]: Finished difference Result 709 states and 1077 transitions. [2025-03-08 05:36:05,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:36:05,556 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 123 [2025-03-08 05:36:05,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:36:05,558 INFO L225 Difference]: With dead ends: 709 [2025-03-08 05:36:05,559 INFO L226 Difference]: Without dead ends: 362 [2025-03-08 05:36:05,560 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2025-03-08 05:36:05,561 INFO L435 NwaCegarLoop]: 456 mSDtfsCounter, 2 mSDsluCounter, 1351 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1807 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 [2025-03-08 05:36:05,561 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1807 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:36:05,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2025-03-08 05:36:05,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 362. [2025-03-08 05:36:05,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 277 states have (on average 1.5306859205776173) internal successors, (424), 282 states have internal predecessors, (424), 60 states have call successors, (60), 22 states have call predecessors, (60), 24 states have return successors, (66), 59 states have call predecessors, (66), 59 states have call successors, (66) [2025-03-08 05:36:05,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 550 transitions. [2025-03-08 05:36:05,604 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 550 transitions. Word has length 123 [2025-03-08 05:36:05,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:36:05,604 INFO L471 AbstractCegarLoop]: Abstraction has 362 states and 550 transitions. [2025-03-08 05:36:05,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-08 05:36:05,605 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 550 transitions. [2025-03-08 05:36:05,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2025-03-08 05:36:05,607 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:36:05,607 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:36:05,619 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-08 05:36:05,807 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 [2025-03-08 05:36:05,808 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:36:05,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:36:05,811 INFO L85 PathProgramCache]: Analyzing trace with hash 2074268858, now seen corresponding path program 1 times [2025-03-08 05:36:05,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:36:05,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444100478] [2025-03-08 05:36:05,812 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:36:05,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:36:05,842 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 124 statements into 1 equivalence classes. [2025-03-08 05:36:05,848 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 124 of 124 statements. [2025-03-08 05:36:05,849 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:36:05,849 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:36:05,942 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-03-08 05:36:05,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:36:05,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444100478] [2025-03-08 05:36:05,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444100478] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:36:05,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:36:05,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 05:36:05,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666309] [2025-03-08 05:36:05,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:36:05,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 05:36:05,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:36:05,944 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 05:36:05,944 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 05:36:05,944 INFO L87 Difference]: Start difference. First operand 362 states and 550 transitions. Second operand has 5 states, 4 states have (on average 19.0) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-08 05:36:05,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:36:05,990 INFO L93 Difference]: Finished difference Result 701 states and 1068 transitions. [2025-03-08 05:36:05,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:36:05,991 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.0) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 124 [2025-03-08 05:36:05,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:36:05,993 INFO L225 Difference]: With dead ends: 701 [2025-03-08 05:36:05,993 INFO L226 Difference]: Without dead ends: 362 [2025-03-08 05:36:05,995 INFO L434 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 [2025-03-08 05:36:05,995 INFO L435 NwaCegarLoop]: 459 mSDtfsCounter, 2 mSDsluCounter, 1366 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1825 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 [2025-03-08 05:36:05,995 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1825 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:36:05,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2025-03-08 05:36:06,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 362. [2025-03-08 05:36:06,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 277 states have (on average 1.5306859205776173) internal successors, (424), 282 states have internal predecessors, (424), 60 states have call successors, (60), 22 states have call predecessors, (60), 24 states have return successors, (65), 59 states have call predecessors, (65), 59 states have call successors, (65) [2025-03-08 05:36:06,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 549 transitions. [2025-03-08 05:36:06,007 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 549 transitions. Word has length 124 [2025-03-08 05:36:06,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:36:06,007 INFO L471 AbstractCegarLoop]: Abstraction has 362 states and 549 transitions. [2025-03-08 05:36:06,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.0) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-08 05:36:06,007 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 549 transitions. [2025-03-08 05:36:06,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2025-03-08 05:36:06,009 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:36:06,009 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:36:06,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 05:36:06,009 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:36:06,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:36:06,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1880840951, now seen corresponding path program 2 times [2025-03-08 05:36:06,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:36:06,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693049977] [2025-03-08 05:36:06,010 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 05:36:06,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:36:06,034 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 125 statements into 2 equivalence classes. [2025-03-08 05:36:06,041 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 58 of 125 statements. [2025-03-08 05:36:06,042 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-08 05:36:06,042 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:36:06,206 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-08 05:36:06,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:36:06,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693049977] [2025-03-08 05:36:06,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693049977] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:36:06,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:36:06,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-08 05:36:06,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360679298] [2025-03-08 05:36:06,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:36:06,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 05:36:06,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:36:06,208 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 05:36:06,208 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-08 05:36:06,208 INFO L87 Difference]: Start difference. First operand 362 states and 549 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-08 05:36:06,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:36:06,610 INFO L93 Difference]: Finished difference Result 952 states and 1425 transitions. [2025-03-08 05:36:06,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-08 05:36:06,611 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 125 [2025-03-08 05:36:06,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:36:06,615 INFO L225 Difference]: With dead ends: 952 [2025-03-08 05:36:06,615 INFO L226 Difference]: Without dead ends: 791 [2025-03-08 05:36:06,616 INFO L434 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 [2025-03-08 05:36:06,616 INFO L435 NwaCegarLoop]: 471 mSDtfsCounter, 907 mSDsluCounter, 2263 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 921 SdHoareTripleChecker+Valid, 2734 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 05:36:06,616 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [921 Valid, 2734 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 05:36:06,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2025-03-08 05:36:06,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 719. [2025-03-08 05:36:06,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 719 states, 552 states have (on average 1.536231884057971) internal successors, (848), 559 states have internal predecessors, (848), 118 states have call successors, (118), 45 states have call predecessors, (118), 48 states have return successors, (132), 118 states have call predecessors, (132), 116 states have call successors, (132) [2025-03-08 05:36:06,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 1098 transitions. [2025-03-08 05:36:06,654 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 1098 transitions. Word has length 125 [2025-03-08 05:36:06,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:36:06,654 INFO L471 AbstractCegarLoop]: Abstraction has 719 states and 1098 transitions. [2025-03-08 05:36:06,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 states have internal predecessors, (78), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-08 05:36:06,654 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 1098 transitions. [2025-03-08 05:36:06,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2025-03-08 05:36:06,657 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:36:06,657 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:36:06,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 05:36:06,657 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:36:06,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:36:06,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1160096581, now seen corresponding path program 1 times [2025-03-08 05:36:06,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:36:06,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057422515] [2025-03-08 05:36:06,658 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:36:06,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:36:06,683 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 126 statements into 1 equivalence classes. [2025-03-08 05:36:06,688 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 126 of 126 statements. [2025-03-08 05:36:06,688 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:36:06,688 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:36:06,774 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-03-08 05:36:06,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:36:06,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057422515] [2025-03-08 05:36:06,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057422515] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:36:06,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:36:06,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 05:36:06,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594679291] [2025-03-08 05:36:06,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:36:06,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 05:36:06,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:36:06,777 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 05:36:06,777 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 05:36:06,777 INFO L87 Difference]: Start difference. First operand 719 states and 1098 transitions. Second operand has 5 states, 4 states have (on average 19.75) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-08 05:36:06,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:36:06,819 INFO L93 Difference]: Finished difference Result 1407 states and 2156 transitions. [2025-03-08 05:36:06,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:36:06,820 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.75) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 126 [2025-03-08 05:36:06,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:36:06,823 INFO L225 Difference]: With dead ends: 1407 [2025-03-08 05:36:06,824 INFO L226 Difference]: Without dead ends: 723 [2025-03-08 05:36:06,825 INFO L434 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 [2025-03-08 05:36:06,826 INFO L435 NwaCegarLoop]: 460 mSDtfsCounter, 1 mSDsluCounter, 1368 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1828 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 [2025-03-08 05:36:06,826 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1828 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:36:06,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2025-03-08 05:36:06,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 723. [2025-03-08 05:36:06,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 554 states have (on average 1.5342960288808665) internal successors, (850), 563 states have internal predecessors, (850), 118 states have call successors, (118), 45 states have call predecessors, (118), 50 states have return successors, (135), 118 states have call predecessors, (135), 116 states have call successors, (135) [2025-03-08 05:36:06,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 1103 transitions. [2025-03-08 05:36:06,856 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 1103 transitions. Word has length 126 [2025-03-08 05:36:06,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:36:06,856 INFO L471 AbstractCegarLoop]: Abstraction has 723 states and 1103 transitions. [2025-03-08 05:36:06,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.75) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-08 05:36:06,857 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 1103 transitions. [2025-03-08 05:36:06,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2025-03-08 05:36:06,859 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:36:06,859 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:36:06,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 05:36:06,860 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:36:06,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:36:06,860 INFO L85 PathProgramCache]: Analyzing trace with hash -566454632, now seen corresponding path program 1 times [2025-03-08 05:36:06,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:36:06,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493665188] [2025-03-08 05:36:06,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:36:06,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:36:06,875 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 127 statements into 1 equivalence classes. [2025-03-08 05:36:06,879 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 127 of 127 statements. [2025-03-08 05:36:06,880 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:36:06,880 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:36:06,992 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-03-08 05:36:06,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:36:06,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493665188] [2025-03-08 05:36:06,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493665188] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:36:06,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:36:06,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 05:36:06,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086101510] [2025-03-08 05:36:06,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:36:06,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 05:36:06,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:36:06,994 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 05:36:06,994 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 05:36:06,994 INFO L87 Difference]: Start difference. First operand 723 states and 1103 transitions. Second operand has 5 states, 4 states have (on average 20.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-08 05:36:07,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:36:07,044 INFO L93 Difference]: Finished difference Result 1411 states and 2161 transitions. [2025-03-08 05:36:07,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:36:07,045 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 20.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 127 [2025-03-08 05:36:07,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:36:07,049 INFO L225 Difference]: With dead ends: 1411 [2025-03-08 05:36:07,049 INFO L226 Difference]: Without dead ends: 727 [2025-03-08 05:36:07,051 INFO L434 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 [2025-03-08 05:36:07,052 INFO L435 NwaCegarLoop]: 458 mSDtfsCounter, 0 mSDsluCounter, 1363 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1821 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 [2025-03-08 05:36:07,052 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1821 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:36:07,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2025-03-08 05:36:07,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 723. [2025-03-08 05:36:07,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 554 states have (on average 1.5342960288808665) internal successors, (850), 563 states have internal predecessors, (850), 118 states have call successors, (118), 45 states have call predecessors, (118), 50 states have return successors, (135), 118 states have call predecessors, (135), 116 states have call successors, (135) [2025-03-08 05:36:07,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 1103 transitions. [2025-03-08 05:36:07,079 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 1103 transitions. Word has length 127 [2025-03-08 05:36:07,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:36:07,079 INFO L471 AbstractCegarLoop]: Abstraction has 723 states and 1103 transitions. [2025-03-08 05:36:07,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 20.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-08 05:36:07,079 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 1103 transitions. [2025-03-08 05:36:07,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2025-03-08 05:36:07,082 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:36:07,082 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:36:07,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-08 05:36:07,082 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:36:07,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:36:07,082 INFO L85 PathProgramCache]: Analyzing trace with hash 403836375, now seen corresponding path program 1 times [2025-03-08 05:36:07,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:36:07,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059630336] [2025-03-08 05:36:07,083 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:36:07,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:36:07,098 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 127 statements into 1 equivalence classes. [2025-03-08 05:36:07,104 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 127 of 127 statements. [2025-03-08 05:36:07,105 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:36:07,105 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:36:07,219 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-08 05:36:07,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:36:07,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059630336] [2025-03-08 05:36:07,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059630336] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:36:07,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:36:07,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-08 05:36:07,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095543842] [2025-03-08 05:36:07,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:36:07,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 05:36:07,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:36:07,221 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 05:36:07,221 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-08 05:36:07,222 INFO L87 Difference]: Start difference. First operand 723 states and 1103 transitions. Second operand has 8 states, 7 states have (on average 11.857142857142858) internal successors, (83), 8 states have internal predecessors, (83), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2025-03-08 05:36:07,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:36:07,346 INFO L93 Difference]: Finished difference Result 1406 states and 2149 transitions. [2025-03-08 05:36:07,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 05:36:07,347 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.857142857142858) internal successors, (83), 8 states have internal predecessors, (83), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 127 [2025-03-08 05:36:07,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:36:07,351 INFO L225 Difference]: With dead ends: 1406 [2025-03-08 05:36:07,352 INFO L226 Difference]: Without dead ends: 727 [2025-03-08 05:36:07,355 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-03-08 05:36:07,357 INFO L435 NwaCegarLoop]: 450 mSDtfsCounter, 7 mSDsluCounter, 2671 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 3121 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 05:36:07,357 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 3121 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 05:36:07,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2025-03-08 05:36:07,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 725. [2025-03-08 05:36:07,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 725 states, 556 states have (on average 1.5323741007194245) internal successors, (852), 564 states have internal predecessors, (852), 118 states have call successors, (118), 46 states have call predecessors, (118), 50 states have return successors, (133), 118 states have call predecessors, (133), 116 states have call successors, (133) [2025-03-08 05:36:07,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725 states to 725 states and 1103 transitions. [2025-03-08 05:36:07,390 INFO L78 Accepts]: Start accepts. Automaton has 725 states and 1103 transitions. Word has length 127 [2025-03-08 05:36:07,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:36:07,390 INFO L471 AbstractCegarLoop]: Abstraction has 725 states and 1103 transitions. [2025-03-08 05:36:07,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.857142857142858) internal successors, (83), 8 states have internal predecessors, (83), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2025-03-08 05:36:07,391 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states and 1103 transitions. [2025-03-08 05:36:07,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2025-03-08 05:36:07,393 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:36:07,393 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:36:07,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-08 05:36:07,394 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:36:07,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:36:07,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1095736181, now seen corresponding path program 2 times [2025-03-08 05:36:07,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:36:07,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724243855] [2025-03-08 05:36:07,394 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 05:36:07,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:36:07,411 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 128 statements into 2 equivalence classes. [2025-03-08 05:36:07,417 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 61 of 128 statements. [2025-03-08 05:36:07,417 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-08 05:36:07,418 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:36:07,558 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-08 05:36:07,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:36:07,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724243855] [2025-03-08 05:36:07,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724243855] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:36:07,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:36:07,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-08 05:36:07,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392914668] [2025-03-08 05:36:07,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:36:07,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 05:36:07,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:36:07,560 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 05:36:07,560 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-08 05:36:07,561 INFO L87 Difference]: Start difference. First operand 725 states and 1103 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-08 05:36:07,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:36:07,986 INFO L93 Difference]: Finished difference Result 1845 states and 2786 transitions. [2025-03-08 05:36:07,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-08 05:36:07,987 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 128 [2025-03-08 05:36:07,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:36:07,995 INFO L225 Difference]: With dead ends: 1845 [2025-03-08 05:36:07,995 INFO L226 Difference]: Without dead ends: 1525 [2025-03-08 05:36:07,997 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2025-03-08 05:36:07,997 INFO L435 NwaCegarLoop]: 520 mSDtfsCounter, 452 mSDsluCounter, 2793 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 3313 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 05:36:07,997 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [452 Valid, 3313 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 05:36:07,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1525 states. [2025-03-08 05:36:08,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1525 to 1421. [2025-03-08 05:36:08,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1421 states, 1093 states have (on average 1.5397987191216835) internal successors, (1683), 1110 states have internal predecessors, (1683), 226 states have call successors, (226), 90 states have call predecessors, (226), 101 states have return successors, (278), 228 states have call predecessors, (278), 222 states have call successors, (278) [2025-03-08 05:36:08,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1421 states to 1421 states and 2187 transitions. [2025-03-08 05:36:08,059 INFO L78 Accepts]: Start accepts. Automaton has 1421 states and 2187 transitions. Word has length 128 [2025-03-08 05:36:08,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:36:08,060 INFO L471 AbstractCegarLoop]: Abstraction has 1421 states and 2187 transitions. [2025-03-08 05:36:08,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-08 05:36:08,060 INFO L276 IsEmpty]: Start isEmpty. Operand 1421 states and 2187 transitions. [2025-03-08 05:36:08,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2025-03-08 05:36:08,064 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:36:08,065 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:36:08,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-08 05:36:08,065 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:36:08,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:36:08,065 INFO L85 PathProgramCache]: Analyzing trace with hash 2146817883, now seen corresponding path program 1 times [2025-03-08 05:36:08,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:36:08,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730706694] [2025-03-08 05:36:08,066 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:36:08,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:36:08,080 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 128 statements into 1 equivalence classes. [2025-03-08 05:36:08,084 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 128 of 128 statements. [2025-03-08 05:36:08,084 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:36:08,084 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:36:08,143 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2025-03-08 05:36:08,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:36:08,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730706694] [2025-03-08 05:36:08,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730706694] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:36:08,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078423601] [2025-03-08 05:36:08,144 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:36:08,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:36:08,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:36:08,146 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) [2025-03-08 05:36:08,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-08 05:36:08,294 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 128 statements into 1 equivalence classes. [2025-03-08 05:36:08,382 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 128 of 128 statements. [2025-03-08 05:36:08,382 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:36:08,382 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:36:08,387 INFO L256 TraceCheckSpWp]: Trace formula consists of 1064 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-08 05:36:08,391 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:36:08,420 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-08 05:36:08,421 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:36:08,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078423601] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:36:08,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:36:08,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2025-03-08 05:36:08,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358622196] [2025-03-08 05:36:08,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:36:08,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 05:36:08,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:36:08,422 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 05:36:08,422 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-03-08 05:36:08,422 INFO L87 Difference]: Start difference. First operand 1421 states and 2187 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:36:08,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:36:08,498 INFO L93 Difference]: Finished difference Result 2149 states and 3299 transitions. [2025-03-08 05:36:08,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:36:08,498 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 128 [2025-03-08 05:36:08,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:36:08,506 INFO L225 Difference]: With dead ends: 2149 [2025-03-08 05:36:08,507 INFO L226 Difference]: Without dead ends: 1435 [2025-03-08 05:36:08,510 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-03-08 05:36:08,510 INFO L435 NwaCegarLoop]: 459 mSDtfsCounter, 1 mSDsluCounter, 1359 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1818 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 [2025-03-08 05:36:08,511 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1818 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:36:08,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1435 states. [2025-03-08 05:36:08,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1435 to 1423. [2025-03-08 05:36:08,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1423 states, 1094 states have (on average 1.5393053016453382) internal successors, (1684), 1112 states have internal predecessors, (1684), 226 states have call successors, (226), 90 states have call predecessors, (226), 102 states have return successors, (280), 228 states have call predecessors, (280), 222 states have call successors, (280) [2025-03-08 05:36:08,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1423 states to 1423 states and 2190 transitions. [2025-03-08 05:36:08,571 INFO L78 Accepts]: Start accepts. Automaton has 1423 states and 2190 transitions. Word has length 128 [2025-03-08 05:36:08,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:36:08,571 INFO L471 AbstractCegarLoop]: Abstraction has 1423 states and 2190 transitions. [2025-03-08 05:36:08,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:36:08,572 INFO L276 IsEmpty]: Start isEmpty. Operand 1423 states and 2190 transitions. [2025-03-08 05:36:08,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2025-03-08 05:36:08,576 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:36:08,577 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:36:08,584 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-08 05:36:08,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-03-08 05:36:08,777 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:36:08,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:36:08,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1886818890, now seen corresponding path program 1 times [2025-03-08 05:36:08,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:36:08,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040915743] [2025-03-08 05:36:08,778 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:36:08,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:36:08,796 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-03-08 05:36:08,802 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-03-08 05:36:08,804 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:36:08,804 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:36:08,941 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-08 05:36:08,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:36:08,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040915743] [2025-03-08 05:36:08,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040915743] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:36:08,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:36:08,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-08 05:36:08,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572323479] [2025-03-08 05:36:08,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:36:08,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 05:36:08,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:36:08,944 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 05:36:08,944 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-08 05:36:08,944 INFO L87 Difference]: Start difference. First operand 1423 states and 2190 transitions. Second operand has 8 states, 7 states have (on average 12.142857142857142) internal successors, (85), 8 states have internal predecessors, (85), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2025-03-08 05:36:09,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:36:09,097 INFO L93 Difference]: Finished difference Result 2117 states and 3251 transitions. [2025-03-08 05:36:09,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 05:36:09,098 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.142857142857142) internal successors, (85), 8 states have internal predecessors, (85), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 129 [2025-03-08 05:36:09,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:36:09,103 INFO L225 Difference]: With dead ends: 2117 [2025-03-08 05:36:09,103 INFO L226 Difference]: Without dead ends: 741 [2025-03-08 05:36:09,107 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-03-08 05:36:09,108 INFO L435 NwaCegarLoop]: 452 mSDtfsCounter, 5 mSDsluCounter, 2683 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3135 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 05:36:09,108 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 3135 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 05:36:09,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2025-03-08 05:36:09,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 735. [2025-03-08 05:36:09,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 563 states have (on average 1.5257548845470692) internal successors, (859), 573 states have internal predecessors, (859), 118 states have call successors, (118), 47 states have call predecessors, (118), 53 states have return successors, (142), 118 states have call predecessors, (142), 116 states have call successors, (142) [2025-03-08 05:36:09,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 1119 transitions. [2025-03-08 05:36:09,148 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 1119 transitions. Word has length 129 [2025-03-08 05:36:09,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:36:09,150 INFO L471 AbstractCegarLoop]: Abstraction has 735 states and 1119 transitions. [2025-03-08 05:36:09,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.142857142857142) internal successors, (85), 8 states have internal predecessors, (85), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2025-03-08 05:36:09,150 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 1119 transitions. [2025-03-08 05:36:09,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2025-03-08 05:36:09,153 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:36:09,153 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:36:09,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-08 05:36:09,153 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:36:09,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:36:09,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1819126234, now seen corresponding path program 1 times [2025-03-08 05:36:09,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:36:09,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930400613] [2025-03-08 05:36:09,154 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:36:09,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:36:09,177 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-03-08 05:36:09,184 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-03-08 05:36:09,184 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:36:09,184 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:36:09,249 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2025-03-08 05:36:09,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:36:09,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930400613] [2025-03-08 05:36:09,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930400613] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:36:09,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873940306] [2025-03-08 05:36:09,250 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:36:09,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:36:09,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:36:09,252 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) [2025-03-08 05:36:09,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-08 05:36:09,395 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-03-08 05:36:09,483 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-03-08 05:36:09,484 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:36:09,484 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:36:09,488 INFO L256 TraceCheckSpWp]: Trace formula consists of 1065 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 05:36:09,491 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:36:09,512 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2025-03-08 05:36:09,514 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 05:36:09,596 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2025-03-08 05:36:09,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873940306] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 05:36:09,596 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 05:36:09,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-03-08 05:36:09,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644199567] [2025-03-08 05:36:09,596 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 05:36:09,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 05:36:09,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:36:09,597 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 05:36:09,597 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-08 05:36:09,597 INFO L87 Difference]: Start difference. First operand 735 states and 1119 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2025-03-08 05:36:09,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:36:09,737 INFO L93 Difference]: Finished difference Result 1707 states and 2706 transitions. [2025-03-08 05:36:09,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 05:36:09,738 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 129 [2025-03-08 05:36:09,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:36:09,745 INFO L225 Difference]: With dead ends: 1707 [2025-03-08 05:36:09,745 INFO L226 Difference]: Without dead ends: 1367 [2025-03-08 05:36:09,746 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-08 05:36:09,747 INFO L435 NwaCegarLoop]: 518 mSDtfsCounter, 375 mSDsluCounter, 1266 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 1784 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 05:36:09,747 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 1784 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 05:36:09,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1367 states. [2025-03-08 05:36:09,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1367 to 1319. [2025-03-08 05:36:09,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1319 states, 1019 states have (on average 1.6025515210991168) internal successors, (1633), 1029 states have internal predecessors, (1633), 246 states have call successors, (246), 47 states have call predecessors, (246), 53 states have return successors, (295), 246 states have call predecessors, (295), 244 states have call successors, (295) [2025-03-08 05:36:09,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 2174 transitions. [2025-03-08 05:36:09,796 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 2174 transitions. Word has length 129 [2025-03-08 05:36:09,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:36:09,796 INFO L471 AbstractCegarLoop]: Abstraction has 1319 states and 2174 transitions. [2025-03-08 05:36:09,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2025-03-08 05:36:09,797 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 2174 transitions. [2025-03-08 05:36:09,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2025-03-08 05:36:09,802 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:36:09,802 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:36:09,810 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-08 05:36:10,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:36:10,003 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:36:10,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:36:10,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1220516625, now seen corresponding path program 1 times [2025-03-08 05:36:10,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:36:10,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575484269] [2025-03-08 05:36:10,004 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:36:10,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:36:10,023 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 136 statements into 1 equivalence classes. [2025-03-08 05:36:10,035 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 136 of 136 statements. [2025-03-08 05:36:10,035 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:36:10,035 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:36:10,062 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2025-03-08 05:36:10,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:36:10,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575484269] [2025-03-08 05:36:10,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575484269] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:36:10,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:36:10,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 05:36:10,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587918615] [2025-03-08 05:36:10,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:36:10,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 05:36:10,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:36:10,064 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 05:36:10,064 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 05:36:10,064 INFO L87 Difference]: Start difference. First operand 1319 states and 2174 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:36:10,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:36:10,110 INFO L93 Difference]: Finished difference Result 3107 states and 5211 transitions. [2025-03-08 05:36:10,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 05:36:10,110 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 136 [2025-03-08 05:36:10,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:36:10,120 INFO L225 Difference]: With dead ends: 3107 [2025-03-08 05:36:10,120 INFO L226 Difference]: Without dead ends: 1911 [2025-03-08 05:36:10,124 INFO L434 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 [2025-03-08 05:36:10,124 INFO L435 NwaCegarLoop]: 474 mSDtfsCounter, 97 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 937 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 [2025-03-08 05:36:10,124 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 937 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:36:10,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1911 states. [2025-03-08 05:36:10,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1911 to 1895. [2025-03-08 05:36:10,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1895 states, 1467 states have (on average 1.621676891615542) internal successors, (2379), 1477 states have internal predecessors, (2379), 374 states have call successors, (374), 47 states have call predecessors, (374), 53 states have return successors, (448), 374 states have call predecessors, (448), 372 states have call successors, (448) [2025-03-08 05:36:10,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1895 states to 1895 states and 3201 transitions. [2025-03-08 05:36:10,193 INFO L78 Accepts]: Start accepts. Automaton has 1895 states and 3201 transitions. Word has length 136 [2025-03-08 05:36:10,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:36:10,193 INFO L471 AbstractCegarLoop]: Abstraction has 1895 states and 3201 transitions. [2025-03-08 05:36:10,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:36:10,193 INFO L276 IsEmpty]: Start isEmpty. Operand 1895 states and 3201 transitions. [2025-03-08 05:36:10,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2025-03-08 05:36:10,202 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:36:10,202 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:36:10,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-08 05:36:10,202 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:36:10,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:36:10,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1681047822, now seen corresponding path program 1 times [2025-03-08 05:36:10,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:36:10,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703499390] [2025-03-08 05:36:10,203 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:36:10,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:36:10,218 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 137 statements into 1 equivalence classes. [2025-03-08 05:36:10,224 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 137 of 137 statements. [2025-03-08 05:36:10,224 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:36:10,224 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:36:10,248 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2025-03-08 05:36:10,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:36:10,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703499390] [2025-03-08 05:36:10,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703499390] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:36:10,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:36:10,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 05:36:10,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159559972] [2025-03-08 05:36:10,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:36:10,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 05:36:10,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:36:10,250 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 05:36:10,250 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 05:36:10,250 INFO L87 Difference]: Start difference. First operand 1895 states and 3201 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:36:10,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:36:10,342 INFO L93 Difference]: Finished difference Result 4481 states and 7638 transitions. [2025-03-08 05:36:10,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 05:36:10,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 137 [2025-03-08 05:36:10,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:36:10,356 INFO L225 Difference]: With dead ends: 4481 [2025-03-08 05:36:10,357 INFO L226 Difference]: Without dead ends: 2807 [2025-03-08 05:36:10,362 INFO L434 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 [2025-03-08 05:36:10,363 INFO L435 NwaCegarLoop]: 476 mSDtfsCounter, 95 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 936 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:36:10,363 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 936 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:36:10,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2807 states. [2025-03-08 05:36:10,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2807 to 2791. [2025-03-08 05:36:10,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2791 states, 2173 states have (on average 1.635066728025771) internal successors, (3553), 2183 states have internal predecessors, (3553), 564 states have call successors, (564), 47 states have call predecessors, (564), 53 states have return successors, (654), 564 states have call predecessors, (654), 562 states have call successors, (654) [2025-03-08 05:36:10,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2791 states to 2791 states and 4771 transitions. [2025-03-08 05:36:10,459 INFO L78 Accepts]: Start accepts. Automaton has 2791 states and 4771 transitions. Word has length 137 [2025-03-08 05:36:10,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:36:10,459 INFO L471 AbstractCegarLoop]: Abstraction has 2791 states and 4771 transitions. [2025-03-08 05:36:10,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:36:10,460 INFO L276 IsEmpty]: Start isEmpty. Operand 2791 states and 4771 transitions. [2025-03-08 05:36:10,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2025-03-08 05:36:10,472 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:36:10,472 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:36:10,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-08 05:36:10,472 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:36:10,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:36:10,472 INFO L85 PathProgramCache]: Analyzing trace with hash -913089010, now seen corresponding path program 1 times [2025-03-08 05:36:10,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:36:10,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032460774] [2025-03-08 05:36:10,473 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:36:10,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:36:10,486 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 138 statements into 1 equivalence classes. [2025-03-08 05:36:10,491 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 138 of 138 statements. [2025-03-08 05:36:10,494 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:36:10,494 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:36:10,517 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2025-03-08 05:36:10,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:36:10,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032460774] [2025-03-08 05:36:10,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032460774] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:36:10,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:36:10,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 05:36:10,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217410880] [2025-03-08 05:36:10,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:36:10,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 05:36:10,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:36:10,519 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 05:36:10,519 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 05:36:10,520 INFO L87 Difference]: Start difference. First operand 2791 states and 4771 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:36:10,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:36:10,637 INFO L93 Difference]: Finished difference Result 6483 states and 11194 transitions. [2025-03-08 05:36:10,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 05:36:10,638 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 138 [2025-03-08 05:36:10,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:36:10,659 INFO L225 Difference]: With dead ends: 6483 [2025-03-08 05:36:10,660 INFO L226 Difference]: Without dead ends: 4149 [2025-03-08 05:36:10,668 INFO L434 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 [2025-03-08 05:36:10,669 INFO L435 NwaCegarLoop]: 465 mSDtfsCounter, 93 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 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 [2025-03-08 05:36:10,670 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 921 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:36:10,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4149 states. [2025-03-08 05:36:10,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4149 to 4133. [2025-03-08 05:36:10,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4133 states, 3269 states have (on average 1.6460691342918323) internal successors, (5381), 3279 states have internal predecessors, (5381), 810 states have call successors, (810), 47 states have call predecessors, (810), 53 states have return successors, (950), 810 states have call predecessors, (950), 808 states have call successors, (950) [2025-03-08 05:36:10,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4133 states to 4133 states and 7141 transitions. [2025-03-08 05:36:10,843 INFO L78 Accepts]: Start accepts. Automaton has 4133 states and 7141 transitions. Word has length 138 [2025-03-08 05:36:10,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:36:10,844 INFO L471 AbstractCegarLoop]: Abstraction has 4133 states and 7141 transitions. [2025-03-08 05:36:10,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:36:10,844 INFO L276 IsEmpty]: Start isEmpty. Operand 4133 states and 7141 transitions. [2025-03-08 05:36:10,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2025-03-08 05:36:10,867 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:36:10,867 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:36:10,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-08 05:36:10,868 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:36:10,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:36:10,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1761866127, now seen corresponding path program 1 times [2025-03-08 05:36:10,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:36:10,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780442368] [2025-03-08 05:36:10,869 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:36:10,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:36:10,889 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 139 statements into 1 equivalence classes. [2025-03-08 05:36:10,896 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 139 of 139 statements. [2025-03-08 05:36:10,896 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:36:10,896 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:36:10,951 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2025-03-08 05:36:10,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:36:10,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780442368] [2025-03-08 05:36:10,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780442368] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:36:10,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:36:10,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 05:36:10,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364778368] [2025-03-08 05:36:10,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:36:10,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 05:36:10,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:36:10,953 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 05:36:10,953 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 05:36:10,953 INFO L87 Difference]: Start difference. First operand 4133 states and 7141 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:36:11,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:36:11,145 INFO L93 Difference]: Finished difference Result 9567 states and 16686 transitions. [2025-03-08 05:36:11,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 05:36:11,145 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 139 [2025-03-08 05:36:11,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:36:11,183 INFO L225 Difference]: With dead ends: 9567 [2025-03-08 05:36:11,183 INFO L226 Difference]: Without dead ends: 6277 [2025-03-08 05:36:11,199 INFO L434 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 [2025-03-08 05:36:11,199 INFO L435 NwaCegarLoop]: 472 mSDtfsCounter, 91 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 929 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 [2025-03-08 05:36:11,200 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 929 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:36:11,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6277 states. [2025-03-08 05:36:11,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6277 to 6261. [2025-03-08 05:36:11,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6261 states, 5039 states have (on average 1.6537011311768208) internal successors, (8333), 5049 states have internal predecessors, (8333), 1168 states have call successors, (1168), 47 states have call predecessors, (1168), 53 states have return successors, (1391), 1168 states have call predecessors, (1391), 1166 states have call successors, (1391) [2025-03-08 05:36:11,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6261 states to 6261 states and 10892 transitions. [2025-03-08 05:36:11,483 INFO L78 Accepts]: Start accepts. Automaton has 6261 states and 10892 transitions. Word has length 139 [2025-03-08 05:36:11,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:36:11,483 INFO L471 AbstractCegarLoop]: Abstraction has 6261 states and 10892 transitions. [2025-03-08 05:36:11,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:36:11,484 INFO L276 IsEmpty]: Start isEmpty. Operand 6261 states and 10892 transitions. [2025-03-08 05:36:11,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2025-03-08 05:36:11,508 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:36:11,508 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:36:11,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-08 05:36:11,509 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:36:11,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:36:11,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1316487091, now seen corresponding path program 1 times [2025-03-08 05:36:11,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:36:11,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144863753] [2025-03-08 05:36:11,509 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:36:11,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:36:11,523 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 140 statements into 1 equivalence classes. [2025-03-08 05:36:11,528 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 140 of 140 statements. [2025-03-08 05:36:11,528 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:36:11,528 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:36:11,552 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2025-03-08 05:36:11,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:36:11,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144863753] [2025-03-08 05:36:11,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144863753] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:36:11,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:36:11,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 05:36:11,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770749305] [2025-03-08 05:36:11,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:36:11,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 05:36:11,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:36:11,554 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 05:36:11,554 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 05:36:11,554 INFO L87 Difference]: Start difference. First operand 6261 states and 10892 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:36:11,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:36:11,802 INFO L93 Difference]: Finished difference Result 15137 states and 26509 transitions. [2025-03-08 05:36:11,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 05:36:11,802 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 140 [2025-03-08 05:36:11,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:36:11,853 INFO L225 Difference]: With dead ends: 15137 [2025-03-08 05:36:11,854 INFO L226 Difference]: Without dead ends: 10151 [2025-03-08 05:36:11,872 INFO L434 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 [2025-03-08 05:36:11,872 INFO L435 NwaCegarLoop]: 475 mSDtfsCounter, 89 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 937 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 [2025-03-08 05:36:11,872 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 937 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:36:11,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10151 states. [2025-03-08 05:36:12,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10151 to 10135. [2025-03-08 05:36:12,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10135 states, 8161 states have (on average 1.647959808846955) internal successors, (13449), 8171 states have internal predecessors, (13449), 1920 states have call successors, (1920), 47 states have call predecessors, (1920), 53 states have return successors, (2287), 1920 states have call predecessors, (2287), 1918 states have call successors, (2287) [2025-03-08 05:36:12,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10135 states to 10135 states and 17656 transitions. [2025-03-08 05:36:12,334 INFO L78 Accepts]: Start accepts. Automaton has 10135 states and 17656 transitions. Word has length 140 [2025-03-08 05:36:12,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:36:12,334 INFO L471 AbstractCegarLoop]: Abstraction has 10135 states and 17656 transitions. [2025-03-08 05:36:12,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:36:12,335 INFO L276 IsEmpty]: Start isEmpty. Operand 10135 states and 17656 transitions. [2025-03-08 05:36:12,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-03-08 05:36:12,371 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:36:12,372 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:36:12,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-08 05:36:12,372 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:36:12,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:36:12,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1830895280, now seen corresponding path program 1 times [2025-03-08 05:36:12,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:36:12,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880245716] [2025-03-08 05:36:12,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:36:12,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:36:12,388 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-08 05:36:12,395 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-08 05:36:12,395 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:36:12,395 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:36:12,423 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2025-03-08 05:36:12,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:36:12,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880245716] [2025-03-08 05:36:12,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880245716] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:36:12,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:36:12,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 05:36:12,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173631998] [2025-03-08 05:36:12,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:36:12,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 05:36:12,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:36:12,425 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 05:36:12,425 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 05:36:12,426 INFO L87 Difference]: Start difference. First operand 10135 states and 17656 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:36:12,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:36:12,864 INFO L93 Difference]: Finished difference Result 24945 states and 43701 transitions. [2025-03-08 05:36:12,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 05:36:12,864 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 141 [2025-03-08 05:36:12,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:36:12,948 INFO L225 Difference]: With dead ends: 24945 [2025-03-08 05:36:12,949 INFO L226 Difference]: Without dead ends: 16795 [2025-03-08 05:36:12,991 INFO L434 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 [2025-03-08 05:36:12,992 INFO L435 NwaCegarLoop]: 467 mSDtfsCounter, 87 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 926 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 [2025-03-08 05:36:12,992 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 926 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:36:13,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16795 states. [2025-03-08 05:36:13,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16795 to 16779. [2025-03-08 05:36:13,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16779 states, 13593 states have (on average 1.6468035018023983) internal successors, (22385), 13603 states have internal predecessors, (22385), 3132 states have call successors, (3132), 47 states have call predecessors, (3132), 53 states have return successors, (3688), 3132 states have call predecessors, (3688), 3130 states have call successors, (3688) [2025-03-08 05:36:13,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16779 states to 16779 states and 29205 transitions. [2025-03-08 05:36:13,752 INFO L78 Accepts]: Start accepts. Automaton has 16779 states and 29205 transitions. Word has length 141 [2025-03-08 05:36:13,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:36:13,752 INFO L471 AbstractCegarLoop]: Abstraction has 16779 states and 29205 transitions. [2025-03-08 05:36:13,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:36:13,752 INFO L276 IsEmpty]: Start isEmpty. Operand 16779 states and 29205 transitions. [2025-03-08 05:36:13,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2025-03-08 05:36:13,802 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:36:13,802 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:36:13,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-08 05:36:13,802 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:36:13,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:36:13,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1723480620, now seen corresponding path program 1 times [2025-03-08 05:36:13,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:36:13,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590944068] [2025-03-08 05:36:13,803 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:36:13,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:36:13,819 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 142 statements into 1 equivalence classes. [2025-03-08 05:36:13,827 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 142 of 142 statements. [2025-03-08 05:36:13,827 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:36:13,827 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:36:13,856 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2025-03-08 05:36:13,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:36:13,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590944068] [2025-03-08 05:36:13,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590944068] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:36:13,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:36:13,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 05:36:13,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130692597] [2025-03-08 05:36:13,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:36:13,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 05:36:13,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:36:13,857 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 05:36:13,857 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 05:36:13,858 INFO L87 Difference]: Start difference. First operand 16779 states and 29205 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:36:14,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:36:14,423 INFO L93 Difference]: Finished difference Result 43383 states and 75847 transitions. [2025-03-08 05:36:14,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 05:36:14,424 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 142 [2025-03-08 05:36:14,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:36:14,546 INFO L225 Difference]: With dead ends: 43383 [2025-03-08 05:36:14,546 INFO L226 Difference]: Without dead ends: 29375 [2025-03-08 05:36:14,591 INFO L434 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 [2025-03-08 05:36:14,592 INFO L435 NwaCegarLoop]: 479 mSDtfsCounter, 85 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:36:14,592 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 942 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:36:14,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29375 states. [2025-03-08 05:36:15,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29375 to 29359. [2025-03-08 05:36:15,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29359 states, 23767 states have (on average 1.6371860142213994) internal successors, (38911), 23777 states have internal predecessors, (38911), 5538 states have call successors, (5538), 47 states have call predecessors, (5538), 53 states have return successors, (6519), 5538 states have call predecessors, (6519), 5536 states have call successors, (6519) [2025-03-08 05:36:15,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29359 states to 29359 states and 50968 transitions. [2025-03-08 05:36:15,918 INFO L78 Accepts]: Start accepts. Automaton has 29359 states and 50968 transitions. Word has length 142 [2025-03-08 05:36:15,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:36:15,919 INFO L471 AbstractCegarLoop]: Abstraction has 29359 states and 50968 transitions. [2025-03-08 05:36:15,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:36:15,919 INFO L276 IsEmpty]: Start isEmpty. Operand 29359 states and 50968 transitions. [2025-03-08 05:36:16,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2025-03-08 05:36:16,003 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:36:16,003 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:36:16,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-08 05:36:16,004 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:36:16,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:36:16,004 INFO L85 PathProgramCache]: Analyzing trace with hash -443819567, now seen corresponding path program 1 times [2025-03-08 05:36:16,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:36:16,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537346295] [2025-03-08 05:36:16,005 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:36:16,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:36:16,024 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 143 statements into 1 equivalence classes. [2025-03-08 05:36:16,034 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 143 of 143 statements. [2025-03-08 05:36:16,035 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:36:16,035 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:36:16,073 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2025-03-08 05:36:16,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:36:16,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537346295] [2025-03-08 05:36:16,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537346295] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:36:16,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:36:16,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 05:36:16,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936122543] [2025-03-08 05:36:16,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:36:16,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 05:36:16,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:36:16,075 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 05:36:16,075 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 05:36:16,075 INFO L87 Difference]: Start difference. First operand 29359 states and 50968 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:36:17,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:36:17,304 INFO L93 Difference]: Finished difference Result 77625 states and 135466 transitions. [2025-03-08 05:36:17,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 05:36:17,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 143 [2025-03-08 05:36:17,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:36:17,536 INFO L225 Difference]: With dead ends: 77625 [2025-03-08 05:36:17,536 INFO L226 Difference]: Without dead ends: 52177 [2025-03-08 05:36:17,609 INFO L434 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 [2025-03-08 05:36:17,611 INFO L435 NwaCegarLoop]: 465 mSDtfsCounter, 83 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 924 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 [2025-03-08 05:36:17,611 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 924 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:36:17,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52177 states. [2025-03-08 05:36:19,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52177 to 52161. [2025-03-08 05:36:19,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52161 states, 42491 states have (on average 1.6330281706714362) internal successors, (69389), 42501 states have internal predecessors, (69389), 9616 states have call successors, (9616), 47 states have call predecessors, (9616), 53 states have return successors, (11411), 9616 states have call predecessors, (11411), 9614 states have call successors, (11411) [2025-03-08 05:36:19,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52161 states to 52161 states and 90416 transitions. [2025-03-08 05:36:19,673 INFO L78 Accepts]: Start accepts. Automaton has 52161 states and 90416 transitions. Word has length 143 [2025-03-08 05:36:19,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:36:19,674 INFO L471 AbstractCegarLoop]: Abstraction has 52161 states and 90416 transitions. [2025-03-08 05:36:19,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:36:19,674 INFO L276 IsEmpty]: Start isEmpty. Operand 52161 states and 90416 transitions. [2025-03-08 05:36:19,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2025-03-08 05:36:19,771 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:36:19,771 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:36:19,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-08 05:36:19,771 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:36:19,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:36:19,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1434834572, now seen corresponding path program 2 times [2025-03-08 05:36:19,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:36:19,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63386516] [2025-03-08 05:36:19,772 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 05:36:19,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:36:19,789 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 144 statements into 2 equivalence classes. [2025-03-08 05:36:19,801 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 144 of 144 statements. [2025-03-08 05:36:19,801 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 05:36:19,802 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:36:19,982 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2025-03-08 05:36:19,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:36:19,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63386516] [2025-03-08 05:36:19,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63386516] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:36:19,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812637630] [2025-03-08 05:36:19,982 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 05:36:19,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:36:19,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:36:19,985 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) [2025-03-08 05:36:19,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-08 05:36:20,137 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 144 statements into 2 equivalence classes. [2025-03-08 05:36:20,227 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 144 of 144 statements. [2025-03-08 05:36:20,227 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 05:36:20,227 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:36:20,232 INFO L256 TraceCheckSpWp]: Trace formula consists of 1113 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-08 05:36:20,235 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:36:20,249 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2025-03-08 05:36:20,250 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:36:20,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812637630] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:36:20,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:36:20,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2025-03-08 05:36:20,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810293178] [2025-03-08 05:36:20,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:36:20,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 05:36:20,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:36:20,252 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 05:36:20,252 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-08 05:36:20,252 INFO L87 Difference]: Start difference. First operand 52161 states and 90416 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:36:21,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:36:21,793 INFO L93 Difference]: Finished difference Result 98621 states and 171274 transitions. [2025-03-08 05:36:21,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 05:36:21,794 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 144 [2025-03-08 05:36:21,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:36:22,050 INFO L225 Difference]: With dead ends: 98621 [2025-03-08 05:36:22,050 INFO L226 Difference]: Without dead ends: 52177 [2025-03-08 05:36:22,201 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-08 05:36:22,204 INFO L435 NwaCegarLoop]: 567 mSDtfsCounter, 96 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 1041 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 [2025-03-08 05:36:22,205 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 1041 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:36:22,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52177 states. [2025-03-08 05:36:24,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52177 to 52161. [2025-03-08 05:36:24,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52161 states, 42491 states have (on average 1.620507872255301) internal successors, (68857), 42501 states have internal predecessors, (68857), 9616 states have call successors, (9616), 47 states have call predecessors, (9616), 53 states have return successors, (11411), 9616 states have call predecessors, (11411), 9614 states have call successors, (11411) [2025-03-08 05:36:24,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52161 states to 52161 states and 89884 transitions. [2025-03-08 05:36:24,383 INFO L78 Accepts]: Start accepts. Automaton has 52161 states and 89884 transitions. Word has length 144 [2025-03-08 05:36:24,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:36:24,383 INFO L471 AbstractCegarLoop]: Abstraction has 52161 states and 89884 transitions. [2025-03-08 05:36:24,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:36:24,384 INFO L276 IsEmpty]: Start isEmpty. Operand 52161 states and 89884 transitions. [2025-03-08 05:36:24,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2025-03-08 05:36:24,488 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:36:24,488 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:36:24,500 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-08 05:36:24,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:36:24,693 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:36:24,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:36:24,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1924678869, now seen corresponding path program 1 times [2025-03-08 05:36:24,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:36:24,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227369684] [2025-03-08 05:36:24,694 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:36:24,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:36:24,710 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 144 statements into 1 equivalence classes. [2025-03-08 05:36:24,717 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 144 of 144 statements. [2025-03-08 05:36:24,718 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:36:24,718 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:36:24,745 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2025-03-08 05:36:24,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:36:24,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227369684] [2025-03-08 05:36:24,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227369684] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:36:24,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:36:24,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 05:36:24,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704628625] [2025-03-08 05:36:24,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:36:24,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 05:36:24,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:36:24,748 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 05:36:24,749 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 05:36:24,749 INFO L87 Difference]: Start difference. First operand 52161 states and 89884 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:36:27,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:36:27,121 INFO L93 Difference]: Finished difference Result 141969 states and 245030 transitions. [2025-03-08 05:36:27,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 05:36:27,122 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 144 [2025-03-08 05:36:27,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:36:27,845 INFO L225 Difference]: With dead ends: 141969 [2025-03-08 05:36:27,845 INFO L226 Difference]: Without dead ends: 95091 [2025-03-08 05:36:27,965 INFO L434 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 [2025-03-08 05:36:27,965 INFO L435 NwaCegarLoop]: 467 mSDtfsCounter, 81 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 926 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 [2025-03-08 05:36:27,966 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 926 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:36:28,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95091 states. [2025-03-08 05:36:30,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95091 to 95075. [2025-03-08 05:36:30,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95075 states, 77975 states have (on average 1.6138634177621032) internal successors, (125841), 77985 states have internal predecessors, (125841), 17046 states have call successors, (17046), 47 states have call predecessors, (17046), 53 states have return successors, (19905), 17046 states have call predecessors, (19905), 17044 states have call successors, (19905) [2025-03-08 05:36:30,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95075 states to 95075 states and 162792 transitions. [2025-03-08 05:36:31,022 INFO L78 Accepts]: Start accepts. Automaton has 95075 states and 162792 transitions. Word has length 144 [2025-03-08 05:36:31,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:36:31,024 INFO L471 AbstractCegarLoop]: Abstraction has 95075 states and 162792 transitions. [2025-03-08 05:36:31,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:36:31,024 INFO L276 IsEmpty]: Start isEmpty. Operand 95075 states and 162792 transitions. [2025-03-08 05:36:31,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2025-03-08 05:36:31,165 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:36:31,165 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:36:31,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-03-08 05:36:31,165 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:36:31,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:36:31,166 INFO L85 PathProgramCache]: Analyzing trace with hash -139813134, now seen corresponding path program 1 times [2025-03-08 05:36:31,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:36:31,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226512362] [2025-03-08 05:36:31,166 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:36:31,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:36:31,180 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 145 statements into 1 equivalence classes. [2025-03-08 05:36:31,186 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 145 of 145 statements. [2025-03-08 05:36:31,187 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:36:31,187 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:36:31,213 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2025-03-08 05:36:31,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:36:31,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226512362] [2025-03-08 05:36:31,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226512362] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:36:31,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:36:31,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 05:36:31,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280902423] [2025-03-08 05:36:31,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:36:31,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 05:36:31,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:36:31,215 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 05:36:31,215 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 05:36:31,215 INFO L87 Difference]: Start difference. First operand 95075 states and 162792 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:36:35,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:36:35,179 INFO L93 Difference]: Finished difference Result 176877 states and 303575 transitions. [2025-03-08 05:36:35,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 05:36:35,180 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 145 [2025-03-08 05:36:35,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:36:35,827 INFO L225 Difference]: With dead ends: 176877 [2025-03-08 05:36:35,827 INFO L226 Difference]: Without dead ends: 176537 [2025-03-08 05:36:35,904 INFO L434 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 [2025-03-08 05:36:35,905 INFO L435 NwaCegarLoop]: 474 mSDtfsCounter, 76 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 938 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 [2025-03-08 05:36:35,905 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 938 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:36:36,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176537 states.