./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 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba1592a-b37e-41f4-8ebe-b7d0ffc9beb6/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba1592a-b37e-41f4-8ebe-b7d0ffc9beb6/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba1592a-b37e-41f4-8ebe-b7d0ffc9beb6/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba1592a-b37e-41f4-8ebe-b7d0ffc9beb6/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec7_product28.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba1592a-b37e-41f4-8ebe-b7d0ffc9beb6/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba1592a-b37e-41f4-8ebe-b7d0ffc9beb6/bin/uautomizer-verify-LYvppIcaGC --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-dev-6497de0 [2024-11-23 18:27:51,550 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 18:27:51,613 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba1592a-b37e-41f4-8ebe-b7d0ffc9beb6/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 18:27:51,618 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 18:27:51,619 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 18:27:51,645 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 18:27:51,645 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 18:27:51,646 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 18:27:51,646 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 18:27:51,646 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 18:27:51,646 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 18:27:51,646 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 18:27:51,647 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 18:27:51,647 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 18:27:51,647 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 18:27:51,647 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 18:27:51,647 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 18:27:51,647 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 18:27:51,647 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 18:27:51,648 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 18:27:51,648 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 18:27:51,648 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 18:27:51,648 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 18:27:51,648 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 18:27:51,648 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 18:27:51,648 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 18:27:51,648 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 18:27:51,648 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 18:27:51,649 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 18:27:51,649 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 18:27:51,649 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 18:27:51,649 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 18:27:51,649 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:27:51,649 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 18:27:51,649 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 18:27:51,649 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 18:27:51,650 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 18:27:51,650 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:27:51,650 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 18:27:51,650 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 18:27:51,650 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 18:27:51,650 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 18:27:51,650 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 18:27:51,650 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 18:27:51,650 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 18:27:51,650 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 18:27:51,651 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 18:27:51,651 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 18:27:51,651 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 -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba1592a-b37e-41f4-8ebe-b7d0ffc9beb6/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f29cc89d3ee64e709bcde3f8f1e5c1c29a2d05992b7eca470a9d177af894449a [2024-11-23 18:27:51,928 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 18:27:51,941 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 18:27:51,944 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 18:27:51,947 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 18:27:51,947 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 18:27:51,949 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba1592a-b37e-41f4-8ebe-b7d0ffc9beb6/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/product-lines/email_spec7_product28.cil.c [2024-11-23 18:27:54,976 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba1592a-b37e-41f4-8ebe-b7d0ffc9beb6/bin/uautomizer-verify-LYvppIcaGC/data/14e6f322d/5ee58d88a99e4de091e45222885df4cc/FLAG2017bb567 [2024-11-23 18:27:55,402 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 18:27:55,404 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba1592a-b37e-41f4-8ebe-b7d0ffc9beb6/sv-benchmarks/c/product-lines/email_spec7_product28.cil.c [2024-11-23 18:27:55,427 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba1592a-b37e-41f4-8ebe-b7d0ffc9beb6/bin/uautomizer-verify-LYvppIcaGC/data/14e6f322d/5ee58d88a99e4de091e45222885df4cc/FLAG2017bb567 [2024-11-23 18:27:55,445 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba1592a-b37e-41f4-8ebe-b7d0ffc9beb6/bin/uautomizer-verify-LYvppIcaGC/data/14e6f322d/5ee58d88a99e4de091e45222885df4cc [2024-11-23 18:27:55,448 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 18:27:55,449 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 18:27:55,451 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 18:27:55,451 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 18:27:55,457 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 18:27:55,458 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:27:55" (1/1) ... [2024-11-23 18:27:55,461 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@522e6e04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:27:55, skipping insertion in model container [2024-11-23 18:27:55,461 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:27:55" (1/1) ... [2024-11-23 18:27:55,534 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 18:27:55,738 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba1592a-b37e-41f4-8ebe-b7d0ffc9beb6/sv-benchmarks/c/product-lines/email_spec7_product28.cil.c[1542,1555] [2024-11-23 18:27:56,261 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 18:27:56,289 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 18:27:56,298 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [48] [2024-11-23 18:27:56,300 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [57] [2024-11-23 18:27:56,300 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [217] [2024-11-23 18:27:56,300 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [255] [2024-11-23 18:27:56,300 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [591] [2024-11-23 18:27:56,301 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [871] [2024-11-23 18:27:56,301 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EncryptVerify_spec.i","") [1084] [2024-11-23 18:27:56,301 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1102] [2024-11-23 18:27:56,302 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [1468] [2024-11-23 18:27:56,302 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [1485] [2024-11-23 18:27:56,303 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [2554] [2024-11-23 18:27:56,308 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba1592a-b37e-41f4-8ebe-b7d0ffc9beb6/sv-benchmarks/c/product-lines/email_spec7_product28.cil.c[1542,1555] [2024-11-23 18:27:56,444 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 18:27:56,476 INFO L204 MainTranslator]: Completed translation [2024-11-23 18:27:56,476 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:27:56 WrapperNode [2024-11-23 18:27:56,477 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 18:27:56,477 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 18:27:56,478 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 18:27:56,478 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 18:27:56,485 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:27:56" (1/1) ... [2024-11-23 18:27:56,506 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:27:56" (1/1) ... [2024-11-23 18:27:56,560 INFO L138 Inliner]: procedures = 128, calls = 195, calls flagged for inlining = 55, calls inlined = 45, statements flattened = 844 [2024-11-23 18:27:56,560 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 18:27:56,561 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 18:27:56,561 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 18:27:56,561 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 18:27:56,570 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:27:56" (1/1) ... [2024-11-23 18:27:56,571 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:27:56" (1/1) ... [2024-11-23 18:27:56,584 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:27:56" (1/1) ... [2024-11-23 18:27:56,626 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 4, 4, 4]. 29 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [2, 4, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0]. [2024-11-23 18:27:56,627 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:27:56" (1/1) ... [2024-11-23 18:27:56,627 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:27:56" (1/1) ... [2024-11-23 18:27:56,650 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:27:56" (1/1) ... [2024-11-23 18:27:56,655 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:27:56" (1/1) ... [2024-11-23 18:27:56,666 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:27:56" (1/1) ... [2024-11-23 18:27:56,672 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:27:56" (1/1) ... [2024-11-23 18:27:56,681 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:27:56" (1/1) ... [2024-11-23 18:27:56,694 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 18:27:56,695 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 18:27:56,695 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 18:27:56,695 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 18:27:56,696 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:27:56" (1/1) ... [2024-11-23 18:27:56,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:27:56,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba1592a-b37e-41f4-8ebe-b7d0ffc9beb6/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:27:56,735 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba1592a-b37e-41f4-8ebe-b7d0ffc9beb6/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 18:27:56,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba1592a-b37e-41f4-8ebe-b7d0ffc9beb6/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 18:27:56,765 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2024-11-23 18:27:56,765 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2024-11-23 18:27:56,766 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2024-11-23 18:27:56,766 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2024-11-23 18:27:56,766 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2024-11-23 18:27:56,766 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2024-11-23 18:27:56,766 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2024-11-23 18:27:56,766 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2024-11-23 18:27:56,766 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2024-11-23 18:27:56,766 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2024-11-23 18:27:56,767 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2024-11-23 18:27:56,767 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2024-11-23 18:27:56,767 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2024-11-23 18:27:56,767 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2024-11-23 18:27:56,767 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2024-11-23 18:27:56,767 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2024-11-23 18:27:56,767 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2024-11-23 18:27:56,767 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2024-11-23 18:27:56,768 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2024-11-23 18:27:56,768 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2024-11-23 18:27:56,768 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2024-11-23 18:27:56,768 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2024-11-23 18:27:56,768 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2024-11-23 18:27:56,768 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2024-11-23 18:27:56,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 18:27:56,768 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2024-11-23 18:27:56,768 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2024-11-23 18:27:56,769 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2024-11-23 18:27:56,769 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2024-11-23 18:27:56,769 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2024-11-23 18:27:56,769 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2024-11-23 18:27:56,769 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2024-11-23 18:27:56,769 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2024-11-23 18:27:56,769 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2024-11-23 18:27:56,769 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2024-11-23 18:27:56,769 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2024-11-23 18:27:56,769 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2024-11-23 18:27:56,769 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2024-11-23 18:27:56,769 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2024-11-23 18:27:56,770 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2024-11-23 18:27:56,770 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2024-11-23 18:27:56,770 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2024-11-23 18:27:56,770 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2024-11-23 18:27:56,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 18:27:56,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 18:27:56,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-23 18:27:56,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-23 18:27:56,770 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2024-11-23 18:27:56,770 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2024-11-23 18:27:56,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 18:27:56,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 18:27:57,049 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 18:27:57,051 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 18:27:58,114 INFO L? ?]: Removed 395 outVars from TransFormulas that were not future-live. [2024-11-23 18:27:58,114 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 18:27:58,143 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 18:27:58,146 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-23 18:27:58,146 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:27:58 BoogieIcfgContainer [2024-11-23 18:27:58,147 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 18:27:58,149 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 18:27:58,149 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 18:27:58,154 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 18:27:58,155 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 06:27:55" (1/3) ... [2024-11-23 18:27:58,155 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4880e7a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:27:58, skipping insertion in model container [2024-11-23 18:27:58,155 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:27:56" (2/3) ... [2024-11-23 18:27:58,156 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4880e7a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:27:58, skipping insertion in model container [2024-11-23 18:27:58,156 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:27:58" (3/3) ... [2024-11-23 18:27:58,158 INFO L128 eAbstractionObserver]: Analyzing ICFG email_spec7_product28.cil.c [2024-11-23 18:27:58,175 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 18:27:58,210 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG email_spec7_product28.cil.c that has 23 procedures, 323 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-23 18:27:58,303 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 18:27:58,320 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;@2aaa891d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 18:27:58,320 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 18:27:58,326 INFO L276 IsEmpty]: Start isEmpty. Operand has 323 states, 250 states have (on average 1.524) internal successors, (381), 254 states have internal predecessors, (381), 49 states have call successors, (49), 22 states have call predecessors, (49), 22 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2024-11-23 18:27:58,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-23 18:27:58,349 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:27:58,350 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] [2024-11-23 18:27:58,351 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:27:58,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:27:58,357 INFO L85 PathProgramCache]: Analyzing trace with hash -426018161, now seen corresponding path program 1 times [2024-11-23 18:27:58,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:27:58,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101286804] [2024-11-23 18:27:58,364 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:27:58,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:27:58,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:27:59,251 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-23 18:27:59,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:27:59,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101286804] [2024-11-23 18:27:59,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101286804] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:27:59,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536213643] [2024-11-23 18:27:59,255 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:27:59,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:27:59,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba1592a-b37e-41f4-8ebe-b7d0ffc9beb6/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:27:59,258 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba1592a-b37e-41f4-8ebe-b7d0ffc9beb6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:27:59,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba1592a-b37e-41f4-8ebe-b7d0ffc9beb6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 18:27:59,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:27:59,729 INFO L256 TraceCheckSpWp]: Trace formula consists of 1042 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-23 18:27:59,742 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:27:59,798 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-23 18:27:59,799 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:27:59,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536213643] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:27:59,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:27:59,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-23 18:27:59,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381133820] [2024-11-23 18:27:59,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:27:59,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:27:59,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:27:59,833 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:27:59,833 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:27:59,838 INFO L87 Difference]: Start difference. First operand has 323 states, 250 states have (on average 1.524) internal successors, (381), 254 states have internal predecessors, (381), 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) [2024-11-23 18:27:59,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:27:59,948 INFO L93 Difference]: Finished difference Result 500 states and 726 transitions. [2024-11-23 18:27:59,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:27:59,951 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 [2024-11-23 18:27:59,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:27:59,973 INFO L225 Difference]: With dead ends: 500 [2024-11-23 18:27:59,974 INFO L226 Difference]: Without dead ends: 318 [2024-11-23 18:27:59,979 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 [2024-11-23 18:27:59,984 INFO L435 NwaCegarLoop]: 473 mSDtfsCounter, 1 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 943 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:27:59,986 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 943 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:28:00,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2024-11-23 18:28:00,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 317. [2024-11-23 18:28:00,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 245 states have (on average 1.5142857142857142) internal successors, (371), 248 states have internal predecessors, (371), 49 states have call successors, (49), 22 states have call predecessors, (49), 22 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-23 18:28:00,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 468 transitions. [2024-11-23 18:28:00,083 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 468 transitions. Word has length 117 [2024-11-23 18:28:00,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:28:00,086 INFO L471 AbstractCegarLoop]: Abstraction has 317 states and 468 transitions. [2024-11-23 18:28:00,087 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) [2024-11-23 18:28:00,087 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 468 transitions. [2024-11-23 18:28:00,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-23 18:28:00,096 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:28:00,096 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] [2024-11-23 18:28:00,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba1592a-b37e-41f4-8ebe-b7d0ffc9beb6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-23 18:28:00,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba1592a-b37e-41f4-8ebe-b7d0ffc9beb6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-23 18:28:00,297 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:28:00,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:28:00,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1266140165, now seen corresponding path program 1 times [2024-11-23 18:28:00,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:28:00,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844844317] [2024-11-23 18:28:00,300 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:28:00,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:28:00,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:28:00,818 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-23 18:28:00,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:28:00,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844844317] [2024-11-23 18:28:00,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844844317] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:28:00,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461911045] [2024-11-23 18:28:00,821 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:28:00,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:28:00,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba1592a-b37e-41f4-8ebe-b7d0ffc9beb6/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:28:00,823 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba1592a-b37e-41f4-8ebe-b7d0ffc9beb6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:28:00,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba1592a-b37e-41f4-8ebe-b7d0ffc9beb6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 18:28:01,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:28:01,210 INFO L256 TraceCheckSpWp]: Trace formula consists of 1053 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 18:28:01,215 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:28:01,242 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-23 18:28:01,242 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:28:01,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461911045] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:28:01,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:28:01,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-23 18:28:01,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663131936] [2024-11-23 18:28:01,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:28:01,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:28:01,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:28:01,245 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:28:01,246 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:28:01,246 INFO L87 Difference]: Start difference. First operand 317 states and 468 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-23 18:28:01,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:28:01,294 INFO L93 Difference]: Finished difference Result 659 states and 987 transitions. [2024-11-23 18:28:01,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:28:01,295 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 122 [2024-11-23 18:28:01,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:28:01,299 INFO L225 Difference]: With dead ends: 659 [2024-11-23 18:28:01,299 INFO L226 Difference]: Without dead ends: 368 [2024-11-23 18:28:01,301 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:28:01,302 INFO L435 NwaCegarLoop]: 480 mSDtfsCounter, 99 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 901 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:28:01,302 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 901 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:28:01,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2024-11-23 18:28:01,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 360. [2024-11-23 18:28:01,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 277 states have (on average 1.5306859205776173) internal successors, (424), 280 states have internal predecessors, (424), 60 states have call successors, (60), 22 states have call predecessors, (60), 22 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2024-11-23 18:28:01,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 543 transitions. [2024-11-23 18:28:01,334 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 543 transitions. Word has length 122 [2024-11-23 18:28:01,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:28:01,334 INFO L471 AbstractCegarLoop]: Abstraction has 360 states and 543 transitions. [2024-11-23 18:28:01,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-23 18:28:01,335 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 543 transitions. [2024-11-23 18:28:01,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-23 18:28:01,339 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:28:01,339 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, 1] [2024-11-23 18:28:01,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba1592a-b37e-41f4-8ebe-b7d0ffc9beb6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-23 18:28:01,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba1592a-b37e-41f4-8ebe-b7d0ffc9beb6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:28:01,540 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:28:01,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:28:01,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1208165760, now seen corresponding path program 1 times [2024-11-23 18:28:01,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:28:01,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711856489] [2024-11-23 18:28:01,541 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:28:01,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:28:01,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:28:01,902 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-23 18:28:01,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:28:01,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711856489] [2024-11-23 18:28:01,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711856489] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:28:01,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965801075] [2024-11-23 18:28:01,906 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:28:01,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:28:01,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba1592a-b37e-41f4-8ebe-b7d0ffc9beb6/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:28:01,908 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba1592a-b37e-41f4-8ebe-b7d0ffc9beb6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:28:01,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba1592a-b37e-41f4-8ebe-b7d0ffc9beb6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 18:28:02,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:28:02,332 INFO L256 TraceCheckSpWp]: Trace formula consists of 1058 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-23 18:28:02,337 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:28:02,425 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-23 18:28:02,428 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:28:02,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965801075] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:28:02,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:28:02,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-23 18:28:02,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562804791] [2024-11-23 18:28:02,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:28:02,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:28:02,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:28:02,430 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:28:02,430 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-23 18:28:02,431 INFO L87 Difference]: Start difference. First operand 360 states and 543 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), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-23 18:28:02,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:28:02,544 INFO L93 Difference]: Finished difference Result 711 states and 1076 transitions. [2024-11-23 18:28:02,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:28:02,545 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), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 123 [2024-11-23 18:28:02,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:28:02,548 INFO L225 Difference]: With dead ends: 711 [2024-11-23 18:28:02,550 INFO L226 Difference]: Without dead ends: 362 [2024-11-23 18:28:02,552 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-23 18:28:02,554 INFO L435 NwaCegarLoop]: 459 mSDtfsCounter, 2 mSDsluCounter, 1366 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1825 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:28:02,555 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1825 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:28:02,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2024-11-23 18:28:02,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 362. [2024-11-23 18:28:02,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 278 states have (on average 1.5287769784172662) internal successors, (425), 282 states have internal predecessors, (425), 60 states have call successors, (60), 22 states have call predecessors, (60), 23 states have return successors, (61), 59 states have call predecessors, (61), 59 states have call successors, (61) [2024-11-23 18:28:02,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 546 transitions. [2024-11-23 18:28:02,597 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 546 transitions. Word has length 123 [2024-11-23 18:28:02,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:28:02,599 INFO L471 AbstractCegarLoop]: Abstraction has 362 states and 546 transitions. [2024-11-23 18:28:02,599 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), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-23 18:28:02,600 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 546 transitions. [2024-11-23 18:28:02,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-23 18:28:02,603 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:28:02,604 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, 1] [2024-11-23 18:28:02,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba1592a-b37e-41f4-8ebe-b7d0ffc9beb6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-23 18:28:02,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba1592a-b37e-41f4-8ebe-b7d0ffc9beb6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:28:02,808 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:28:02,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:28:02,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1441028897, now seen corresponding path program 1 times [2024-11-23 18:28:02,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:28:02,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526547675] [2024-11-23 18:28:02,809 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:28:02,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:28:02,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:28:03,074 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-23 18:28:03,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:28:03,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526547675] [2024-11-23 18:28:03,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526547675] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:28:03,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465682738] [2024-11-23 18:28:03,075 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:28:03,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:28:03,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba1592a-b37e-41f4-8ebe-b7d0ffc9beb6/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:28:03,079 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba1592a-b37e-41f4-8ebe-b7d0ffc9beb6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:28:03,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba1592a-b37e-41f4-8ebe-b7d0ffc9beb6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 18:28:03,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:28:03,436 INFO L256 TraceCheckSpWp]: Trace formula consists of 1059 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 18:28:03,440 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:28:03,518 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-23 18:28:03,518 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:28:03,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465682738] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:28:03,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:28:03,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2024-11-23 18:28:03,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276731051] [2024-11-23 18:28:03,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:28:03,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:28:03,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:28:03,520 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:28:03,520 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-23 18:28:03,520 INFO L87 Difference]: Start difference. First operand 362 states and 546 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-23 18:28:03,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:28:03,629 INFO L93 Difference]: Finished difference Result 713 states and 1081 transitions. [2024-11-23 18:28:03,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:28:03,630 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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 124 [2024-11-23 18:28:03,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:28:03,633 INFO L225 Difference]: With dead ends: 713 [2024-11-23 18:28:03,633 INFO L226 Difference]: Without dead ends: 364 [2024-11-23 18:28:03,635 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-23 18:28:03,635 INFO L435 NwaCegarLoop]: 457 mSDtfsCounter, 2 mSDsluCounter, 1354 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1811 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:28:03,636 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1811 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:28:03,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2024-11-23 18:28:03,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2024-11-23 18:28:03,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 279 states have (on average 1.5268817204301075) internal successors, (426), 284 states have internal predecessors, (426), 60 states have call successors, (60), 22 states have call predecessors, (60), 24 states have return successors, (66), 59 states have call predecessors, (66), 59 states have call successors, (66) [2024-11-23 18:28:03,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 552 transitions. [2024-11-23 18:28:03,655 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 552 transitions. Word has length 124 [2024-11-23 18:28:03,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:28:03,656 INFO L471 AbstractCegarLoop]: Abstraction has 364 states and 552 transitions. [2024-11-23 18:28:03,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-23 18:28:03,656 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 552 transitions. [2024-11-23 18:28:03,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-23 18:28:03,658 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:28:03,659 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] [2024-11-23 18:28:03,669 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba1592a-b37e-41f4-8ebe-b7d0ffc9beb6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-23 18:28:03,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba1592a-b37e-41f4-8ebe-b7d0ffc9beb6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:28:03,863 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:28:03,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:28:03,864 INFO L85 PathProgramCache]: Analyzing trace with hash 415718896, now seen corresponding path program 1 times [2024-11-23 18:28:03,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:28:03,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835510516] [2024-11-23 18:28:03,864 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:28:03,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:28:03,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:28:04,095 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-23 18:28:04,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:28:04,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835510516] [2024-11-23 18:28:04,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835510516] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:28:04,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:28:04,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 18:28:04,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826284596] [2024-11-23 18:28:04,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:28:04,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:28:04,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:28:04,098 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:28:04,098 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:28:04,098 INFO L87 Difference]: Start difference. First operand 364 states and 552 transitions. Second operand has 5 states, 4 states have (on average 19.25) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-23 18:28:04,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:28:04,169 INFO L93 Difference]: Finished difference Result 705 states and 1072 transitions. [2024-11-23 18:28:04,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:28:04,169 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.25) internal successors, (77), 5 states have internal predecessors, (77), 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 125 [2024-11-23 18:28:04,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:28:04,175 INFO L225 Difference]: With dead ends: 705 [2024-11-23 18:28:04,175 INFO L226 Difference]: Without dead ends: 364 [2024-11-23 18:28:04,176 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 [2024-11-23 18:28:04,178 INFO L435 NwaCegarLoop]: 460 mSDtfsCounter, 2 mSDsluCounter, 1369 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1829 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:28:04,178 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1829 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:28:04,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2024-11-23 18:28:04,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2024-11-23 18:28:04,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 279 states have (on average 1.5268817204301075) internal successors, (426), 284 states have internal predecessors, (426), 60 states have call successors, (60), 22 states have call predecessors, (60), 24 states have return successors, (65), 59 states have call predecessors, (65), 59 states have call successors, (65) [2024-11-23 18:28:04,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 551 transitions. [2024-11-23 18:28:04,209 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 551 transitions. Word has length 125 [2024-11-23 18:28:04,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:28:04,210 INFO L471 AbstractCegarLoop]: Abstraction has 364 states and 551 transitions. [2024-11-23 18:28:04,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.25) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-23 18:28:04,210 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 551 transitions. [2024-11-23 18:28:04,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-23 18:28:04,213 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:28:04,214 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, 1] [2024-11-23 18:28:04,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 18:28:04,214 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:28:04,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:28:04,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1663716435, now seen corresponding path program 2 times [2024-11-23 18:28:04,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:28:04,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968424873] [2024-11-23 18:28:04,215 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 18:28:04,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:28:04,257 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 18:28:04,257 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 18:28:04,493 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-23 18:28:04,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:28:04,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968424873] [2024-11-23 18:28:04,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968424873] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:28:04,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:28:04,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 18:28:04,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910311429] [2024-11-23 18:28:04,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:28:04,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 18:28:04,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:28:04,495 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 18:28:04,495 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-23 18:28:04,495 INFO L87 Difference]: Start difference. First operand 364 states and 551 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-23 18:28:05,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:28:05,086 INFO L93 Difference]: Finished difference Result 812 states and 1237 transitions. [2024-11-23 18:28:05,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 18:28:05,087 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 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 126 [2024-11-23 18:28:05,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:28:05,092 INFO L225 Difference]: With dead ends: 812 [2024-11-23 18:28:05,093 INFO L226 Difference]: Without dead ends: 653 [2024-11-23 18:28:05,094 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-11-23 18:28:05,095 INFO L435 NwaCegarLoop]: 488 mSDtfsCounter, 474 mSDsluCounter, 2550 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 3038 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 18:28:05,095 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 3038 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 18:28:05,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2024-11-23 18:28:05,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 614. [2024-11-23 18:28:05,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 477 states have (on average 1.5681341719077568) internal successors, (748), 483 states have internal predecessors, (748), 98 states have call successors, (98), 37 states have call predecessors, (98), 38 states have return successors, (112), 96 states have call predecessors, (112), 97 states have call successors, (112) [2024-11-23 18:28:05,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 958 transitions. [2024-11-23 18:28:05,138 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 958 transitions. Word has length 126 [2024-11-23 18:28:05,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:28:05,139 INFO L471 AbstractCegarLoop]: Abstraction has 614 states and 958 transitions. [2024-11-23 18:28:05,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-23 18:28:05,139 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 958 transitions. [2024-11-23 18:28:05,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-23 18:28:05,143 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:28:05,143 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] [2024-11-23 18:28:05,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 18:28:05,144 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:28:05,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:28:05,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1055167372, now seen corresponding path program 1 times [2024-11-23 18:28:05,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:28:05,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580902782] [2024-11-23 18:28:05,145 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:28:05,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:28:05,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:28:05,365 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-23 18:28:05,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:28:05,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580902782] [2024-11-23 18:28:05,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580902782] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:28:05,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:28:05,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 18:28:05,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669367465] [2024-11-23 18:28:05,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:28:05,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:28:05,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:28:05,367 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:28:05,367 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:28:05,368 INFO L87 Difference]: Start difference. First operand 614 states and 958 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) [2024-11-23 18:28:05,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:28:05,439 INFO L93 Difference]: Finished difference Result 1207 states and 1889 transitions. [2024-11-23 18:28:05,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:28:05,440 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 [2024-11-23 18:28:05,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:28:05,445 INFO L225 Difference]: With dead ends: 1207 [2024-11-23 18:28:05,445 INFO L226 Difference]: Without dead ends: 616 [2024-11-23 18:28:05,447 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 [2024-11-23 18:28:05,448 INFO L435 NwaCegarLoop]: 461 mSDtfsCounter, 1 mSDsluCounter, 1371 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1832 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:28:05,448 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1832 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:28:05,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2024-11-23 18:28:05,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 616. [2024-11-23 18:28:05,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 478 states have (on average 1.5669456066945606) internal successors, (749), 485 states have internal predecessors, (749), 98 states have call successors, (98), 37 states have call predecessors, (98), 39 states have return successors, (114), 96 states have call predecessors, (114), 97 states have call successors, (114) [2024-11-23 18:28:05,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 961 transitions. [2024-11-23 18:28:05,499 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 961 transitions. Word has length 127 [2024-11-23 18:28:05,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:28:05,499 INFO L471 AbstractCegarLoop]: Abstraction has 616 states and 961 transitions. [2024-11-23 18:28:05,500 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) [2024-11-23 18:28:05,500 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 961 transitions. [2024-11-23 18:28:05,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-23 18:28:05,504 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:28:05,505 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] [2024-11-23 18:28:05,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 18:28:05,505 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:28:05,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:28:05,505 INFO L85 PathProgramCache]: Analyzing trace with hash -193643804, now seen corresponding path program 1 times [2024-11-23 18:28:05,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:28:05,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591061011] [2024-11-23 18:28:05,506 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:28:05,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:28:05,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:28:05,755 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-23 18:28:05,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:28:05,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591061011] [2024-11-23 18:28:05,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591061011] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:28:05,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:28:05,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 18:28:05,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110389371] [2024-11-23 18:28:05,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:28:05,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 18:28:05,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:28:05,757 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 18:28:05,757 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-23 18:28:05,758 INFO L87 Difference]: Start difference. First operand 616 states and 961 transitions. Second operand has 8 states, 7 states have (on average 12.0) internal successors, (84), 8 states have internal predecessors, (84), 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) [2024-11-23 18:28:05,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:28:05,930 INFO L93 Difference]: Finished difference Result 1022 states and 1574 transitions. [2024-11-23 18:28:05,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 18:28:05,931 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.0) internal successors, (84), 8 states have internal predecessors, (84), 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 128 [2024-11-23 18:28:05,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:28:05,934 INFO L225 Difference]: With dead ends: 1022 [2024-11-23 18:28:05,935 INFO L226 Difference]: Without dead ends: 434 [2024-11-23 18:28:05,937 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 [2024-11-23 18:28:05,938 INFO L435 NwaCegarLoop]: 451 mSDtfsCounter, 7 mSDsluCounter, 2677 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 3128 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 [2024-11-23 18:28:05,938 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 3128 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:28:05,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2024-11-23 18:28:05,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2024-11-23 18:28:05,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 335 states have (on average 1.5253731343283583) internal successors, (511), 341 states have internal predecessors, (511), 66 states have call successors, (66), 30 states have call predecessors, (66), 32 states have return successors, (74), 65 states have call predecessors, (74), 65 states have call successors, (74) [2024-11-23 18:28:05,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 651 transitions. [2024-11-23 18:28:05,996 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 651 transitions. Word has length 128 [2024-11-23 18:28:05,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:28:05,998 INFO L471 AbstractCegarLoop]: Abstraction has 434 states and 651 transitions. [2024-11-23 18:28:05,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.0) internal successors, (84), 8 states have internal predecessors, (84), 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) [2024-11-23 18:28:05,999 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 651 transitions. [2024-11-23 18:28:06,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-23 18:28:06,001 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:28:06,002 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] [2024-11-23 18:28:06,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 18:28:06,002 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:28:06,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:28:06,003 INFO L85 PathProgramCache]: Analyzing trace with hash -303134747, now seen corresponding path program 2 times [2024-11-23 18:28:06,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:28:06,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323872038] [2024-11-23 18:28:06,003 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 18:28:06,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:28:06,051 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 18:28:06,052 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 18:28:06,217 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-23 18:28:06,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:28:06,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323872038] [2024-11-23 18:28:06,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323872038] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:28:06,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:28:06,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 18:28:06,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255193687] [2024-11-23 18:28:06,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:28:06,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 18:28:06,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:28:06,219 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 18:28:06,219 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-23 18:28:06,220 INFO L87 Difference]: Start difference. First operand 434 states and 651 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 7 states have internal predecessors, (83), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-23 18:28:06,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:28:06,803 INFO L93 Difference]: Finished difference Result 904 states and 1373 transitions. [2024-11-23 18:28:06,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 18:28:06,804 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 7 states have internal predecessors, (83), 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 129 [2024-11-23 18:28:06,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:28:06,809 INFO L225 Difference]: With dead ends: 904 [2024-11-23 18:28:06,809 INFO L226 Difference]: Without dead ends: 741 [2024-11-23 18:28:06,811 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 [2024-11-23 18:28:06,811 INFO L435 NwaCegarLoop]: 521 mSDtfsCounter, 468 mSDsluCounter, 2670 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 3191 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 18:28:06,812 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 3191 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 18:28:06,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2024-11-23 18:28:06,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 610. [2024-11-23 18:28:06,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 474 states have (on average 1.5675105485232068) internal successors, (743), 480 states have internal predecessors, (743), 95 states have call successors, (95), 37 states have call predecessors, (95), 40 states have return successors, (116), 95 states have call predecessors, (116), 94 states have call successors, (116) [2024-11-23 18:28:06,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 954 transitions. [2024-11-23 18:28:06,857 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 954 transitions. Word has length 129 [2024-11-23 18:28:06,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:28:06,857 INFO L471 AbstractCegarLoop]: Abstraction has 610 states and 954 transitions. [2024-11-23 18:28:06,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 7 states have internal predecessors, (83), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-23 18:28:06,858 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 954 transitions. [2024-11-23 18:28:06,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-23 18:28:06,861 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:28:06,861 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, 1] [2024-11-23 18:28:06,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 18:28:06,861 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:28:06,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:28:06,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1351770160, now seen corresponding path program 1 times [2024-11-23 18:28:06,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:28:06,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556463264] [2024-11-23 18:28:06,862 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:28:06,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:28:06,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:28:07,069 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-23 18:28:07,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:28:07,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556463264] [2024-11-23 18:28:07,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556463264] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:28:07,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:28:07,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 18:28:07,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537858188] [2024-11-23 18:28:07,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:28:07,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 18:28:07,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:28:07,071 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 18:28:07,071 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-23 18:28:07,071 INFO L87 Difference]: Start difference. First operand 610 states and 954 transitions. Second operand has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 8 states have internal predecessors, (86), 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) [2024-11-23 18:28:07,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:28:07,252 INFO L93 Difference]: Finished difference Result 1017 states and 1570 transitions. [2024-11-23 18:28:07,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 18:28:07,253 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 8 states have internal predecessors, (86), 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 130 [2024-11-23 18:28:07,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:28:07,257 INFO L225 Difference]: With dead ends: 1017 [2024-11-23 18:28:07,257 INFO L226 Difference]: Without dead ends: 437 [2024-11-23 18:28:07,259 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 [2024-11-23 18:28:07,260 INFO L435 NwaCegarLoop]: 453 mSDtfsCounter, 5 mSDsluCounter, 2689 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3142 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:28:07,260 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 3142 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:28:07,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2024-11-23 18:28:07,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 437. [2024-11-23 18:28:07,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 337 states have (on average 1.5222551928783383) internal successors, (513), 344 states have internal predecessors, (513), 66 states have call successors, (66), 30 states have call predecessors, (66), 33 states have return successors, (79), 65 states have call predecessors, (79), 65 states have call successors, (79) [2024-11-23 18:28:07,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 658 transitions. [2024-11-23 18:28:07,287 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 658 transitions. Word has length 130 [2024-11-23 18:28:07,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:28:07,287 INFO L471 AbstractCegarLoop]: Abstraction has 437 states and 658 transitions. [2024-11-23 18:28:07,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 8 states have internal predecessors, (86), 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) [2024-11-23 18:28:07,287 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 658 transitions. [2024-11-23 18:28:07,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-23 18:28:07,289 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:28:07,290 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] [2024-11-23 18:28:07,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-23 18:28:07,290 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:28:07,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:28:07,290 INFO L85 PathProgramCache]: Analyzing trace with hash 897132888, now seen corresponding path program 1 times [2024-11-23 18:28:07,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:28:07,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392228914] [2024-11-23 18:28:07,291 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:28:07,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:28:07,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:28:07,440 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-23 18:28:07,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:28:07,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392228914] [2024-11-23 18:28:07,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392228914] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:28:07,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:28:07,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 18:28:07,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534834215] [2024-11-23 18:28:07,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:28:07,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:28:07,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:28:07,441 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:28:07,441 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:28:07,442 INFO L87 Difference]: Start difference. First operand 437 states and 658 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-23 18:28:07,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:28:07,541 INFO L93 Difference]: Finished difference Result 846 states and 1281 transitions. [2024-11-23 18:28:07,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:28:07,542 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 131 [2024-11-23 18:28:07,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:28:07,545 INFO L225 Difference]: With dead ends: 846 [2024-11-23 18:28:07,545 INFO L226 Difference]: Without dead ends: 439 [2024-11-23 18:28:07,546 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 [2024-11-23 18:28:07,547 INFO L435 NwaCegarLoop]: 457 mSDtfsCounter, 0 mSDsluCounter, 1354 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1811 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:28:07,547 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1811 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:28:07,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2024-11-23 18:28:07,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 437. [2024-11-23 18:28:07,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 337 states have (on average 1.5222551928783383) internal successors, (513), 344 states have internal predecessors, (513), 66 states have call successors, (66), 30 states have call predecessors, (66), 33 states have return successors, (79), 65 states have call predecessors, (79), 65 states have call successors, (79) [2024-11-23 18:28:07,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 658 transitions. [2024-11-23 18:28:07,573 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 658 transitions. Word has length 131 [2024-11-23 18:28:07,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:28:07,573 INFO L471 AbstractCegarLoop]: Abstraction has 437 states and 658 transitions. [2024-11-23 18:28:07,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-23 18:28:07,573 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 658 transitions. [2024-11-23 18:28:07,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-23 18:28:07,576 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:28:07,576 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] [2024-11-23 18:28:07,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-23 18:28:07,576 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:28:07,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:28:07,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1483409110, now seen corresponding path program 1 times [2024-11-23 18:28:07,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:28:07,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547365760] [2024-11-23 18:28:07,577 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:28:07,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:28:07,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:28:07,708 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-23 18:28:07,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:28:07,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547365760] [2024-11-23 18:28:07,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547365760] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:28:07,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162348198] [2024-11-23 18:28:07,709 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:28:07,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:28:07,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba1592a-b37e-41f4-8ebe-b7d0ffc9beb6/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:28:07,712 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba1592a-b37e-41f4-8ebe-b7d0ffc9beb6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:28:07,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba1592a-b37e-41f4-8ebe-b7d0ffc9beb6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 18:28:08,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:28:08,060 INFO L256 TraceCheckSpWp]: Trace formula consists of 1066 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 18:28:08,063 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:28:08,101 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-23 18:28:08,101 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:28:08,231 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-23 18:28:08,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162348198] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:28:08,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:28:08,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-23 18:28:08,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154781515] [2024-11-23 18:28:08,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:28:08,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 18:28:08,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:28:08,235 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 18:28:08,235 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:28:08,235 INFO L87 Difference]: Start difference. First operand 437 states and 658 transitions. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-23 18:28:08,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:28:08,449 INFO L93 Difference]: Finished difference Result 993 states and 1548 transitions. [2024-11-23 18:28:08,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 18:28:08,450 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 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 131 [2024-11-23 18:28:08,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:28:08,456 INFO L225 Difference]: With dead ends: 993 [2024-11-23 18:28:08,457 INFO L226 Difference]: Without dead ends: 758 [2024-11-23 18:28:08,458 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:28:08,460 INFO L435 NwaCegarLoop]: 496 mSDtfsCounter, 345 mSDsluCounter, 2002 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 2498 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:28:08,460 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 2498 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:28:08,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2024-11-23 18:28:08,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 734. [2024-11-23 18:28:08,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 570 states have (on average 1.587719298245614) internal successors, (905), 577 states have internal predecessors, (905), 130 states have call successors, (130), 30 states have call predecessors, (130), 33 states have return successors, (153), 129 states have call predecessors, (153), 129 states have call successors, (153) [2024-11-23 18:28:08,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1188 transitions. [2024-11-23 18:28:08,510 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1188 transitions. Word has length 131 [2024-11-23 18:28:08,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:28:08,512 INFO L471 AbstractCegarLoop]: Abstraction has 734 states and 1188 transitions. [2024-11-23 18:28:08,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-23 18:28:08,513 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1188 transitions. [2024-11-23 18:28:08,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-23 18:28:08,519 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:28:08,519 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] [2024-11-23 18:28:08,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba1592a-b37e-41f4-8ebe-b7d0ffc9beb6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-23 18:28:08,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba1592a-b37e-41f4-8ebe-b7d0ffc9beb6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:28:08,720 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:28:08,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:28:08,720 INFO L85 PathProgramCache]: Analyzing trace with hash -2146597838, now seen corresponding path program 1 times [2024-11-23 18:28:08,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:28:08,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259640151] [2024-11-23 18:28:08,720 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:28:08,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:28:08,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:28:08,812 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-23 18:28:08,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:28:08,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259640151] [2024-11-23 18:28:08,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259640151] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:28:08,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:28:08,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:28:08,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792068832] [2024-11-23 18:28:08,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:28:08,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:28:08,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:28:08,814 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:28:08,814 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:28:08,814 INFO L87 Difference]: Start difference. First operand 734 states and 1188 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) [2024-11-23 18:28:08,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:28:08,873 INFO L93 Difference]: Finished difference Result 1700 states and 2800 transitions. [2024-11-23 18:28:08,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:28:08,874 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 [2024-11-23 18:28:08,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:28:08,881 INFO L225 Difference]: With dead ends: 1700 [2024-11-23 18:28:08,881 INFO L226 Difference]: Without dead ends: 1035 [2024-11-23 18:28:08,884 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 [2024-11-23 18:28:08,885 INFO L435 NwaCegarLoop]: 473 mSDtfsCounter, 97 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:28:08,885 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 935 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:28:08,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2024-11-23 18:28:08,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 1027. [2024-11-23 18:28:08,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1027 states, 799 states have (on average 1.6057571964956194) internal successors, (1283), 806 states have internal predecessors, (1283), 194 states have call successors, (194), 30 states have call predecessors, (194), 33 states have return successors, (227), 193 states have call predecessors, (227), 193 states have call successors, (227) [2024-11-23 18:28:08,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 1704 transitions. [2024-11-23 18:28:08,950 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 1704 transitions. Word has length 138 [2024-11-23 18:28:08,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:28:08,951 INFO L471 AbstractCegarLoop]: Abstraction has 1027 states and 1704 transitions. [2024-11-23 18:28:08,951 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) [2024-11-23 18:28:08,951 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 1704 transitions. [2024-11-23 18:28:08,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-23 18:28:08,958 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:28:08,959 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] [2024-11-23 18:28:08,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-23 18:28:08,959 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:28:08,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:28:08,959 INFO L85 PathProgramCache]: Analyzing trace with hash -205402706, now seen corresponding path program 1 times [2024-11-23 18:28:08,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:28:08,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326967151] [2024-11-23 18:28:08,960 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:28:08,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:28:08,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:28:09,041 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-23 18:28:09,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:28:09,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326967151] [2024-11-23 18:28:09,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326967151] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:28:09,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:28:09,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:28:09,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377310323] [2024-11-23 18:28:09,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:28:09,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:28:09,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:28:09,043 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:28:09,043 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:28:09,043 INFO L87 Difference]: Start difference. First operand 1027 states and 1704 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) [2024-11-23 18:28:09,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:28:09,154 INFO L93 Difference]: Finished difference Result 2398 states and 4012 transitions. [2024-11-23 18:28:09,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:28:09,154 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 [2024-11-23 18:28:09,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:28:09,165 INFO L225 Difference]: With dead ends: 2398 [2024-11-23 18:28:09,165 INFO L226 Difference]: Without dead ends: 1491 [2024-11-23 18:28:09,169 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 [2024-11-23 18:28:09,169 INFO L435 NwaCegarLoop]: 466 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, 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 [2024-11-23 18:28:09,170 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 926 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:28:09,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1491 states. [2024-11-23 18:28:09,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1491 to 1483. [2024-11-23 18:28:09,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1483 states, 1160 states have (on average 1.6189655172413793) internal successors, (1878), 1167 states have internal predecessors, (1878), 289 states have call successors, (289), 30 states have call predecessors, (289), 33 states have return successors, (322), 288 states have call predecessors, (322), 288 states have call successors, (322) [2024-11-23 18:28:09,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1483 states to 1483 states and 2489 transitions. [2024-11-23 18:28:09,294 INFO L78 Accepts]: Start accepts. Automaton has 1483 states and 2489 transitions. Word has length 139 [2024-11-23 18:28:09,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:28:09,294 INFO L471 AbstractCegarLoop]: Abstraction has 1483 states and 2489 transitions. [2024-11-23 18:28:09,295 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) [2024-11-23 18:28:09,295 INFO L276 IsEmpty]: Start isEmpty. Operand 1483 states and 2489 transitions. [2024-11-23 18:28:09,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-23 18:28:09,308 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:28:09,308 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] [2024-11-23 18:28:09,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-23 18:28:09,308 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:28:09,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:28:09,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1394191380, now seen corresponding path program 1 times [2024-11-23 18:28:09,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:28:09,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919660526] [2024-11-23 18:28:09,309 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:28:09,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:28:09,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:28:09,416 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-23 18:28:09,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:28:09,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919660526] [2024-11-23 18:28:09,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919660526] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:28:09,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:28:09,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:28:09,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785216012] [2024-11-23 18:28:09,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:28:09,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:28:09,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:28:09,418 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:28:09,419 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:28:09,419 INFO L87 Difference]: Start difference. First operand 1483 states and 2489 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) [2024-11-23 18:28:09,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:28:09,561 INFO L93 Difference]: Finished difference Result 3417 states and 5791 transitions. [2024-11-23 18:28:09,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:28:09,562 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 [2024-11-23 18:28:09,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:28:09,577 INFO L225 Difference]: With dead ends: 3417 [2024-11-23 18:28:09,577 INFO L226 Difference]: Without dead ends: 2175 [2024-11-23 18:28:09,582 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 [2024-11-23 18:28:09,583 INFO L435 NwaCegarLoop]: 466 mSDtfsCounter, 93 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:28:09,583 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 923 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:28:09,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2175 states. [2024-11-23 18:28:09,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2175 to 2167. [2024-11-23 18:28:09,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2167 states, 1721 states have (on average 1.6298663567693201) internal successors, (2805), 1728 states have internal predecessors, (2805), 412 states have call successors, (412), 30 states have call predecessors, (412), 33 states have return successors, (461), 411 states have call predecessors, (461), 411 states have call successors, (461) [2024-11-23 18:28:09,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2167 states to 2167 states and 3678 transitions. [2024-11-23 18:28:09,721 INFO L78 Accepts]: Start accepts. Automaton has 2167 states and 3678 transitions. Word has length 140 [2024-11-23 18:28:09,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:28:09,722 INFO L471 AbstractCegarLoop]: Abstraction has 2167 states and 3678 transitions. [2024-11-23 18:28:09,722 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) [2024-11-23 18:28:09,722 INFO L276 IsEmpty]: Start isEmpty. Operand 2167 states and 3678 transitions. [2024-11-23 18:28:09,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-23 18:28:09,736 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:28:09,736 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] [2024-11-23 18:28:09,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-23 18:28:09,736 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:28:09,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:28:09,737 INFO L85 PathProgramCache]: Analyzing trace with hash -949070257, now seen corresponding path program 1 times [2024-11-23 18:28:09,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:28:09,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934107246] [2024-11-23 18:28:09,737 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:28:09,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:28:09,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:28:09,816 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-23 18:28:09,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:28:09,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934107246] [2024-11-23 18:28:09,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934107246] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:28:09,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:28:09,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:28:09,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447575479] [2024-11-23 18:28:09,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:28:09,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:28:09,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:28:09,818 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:28:09,818 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:28:09,818 INFO L87 Difference]: Start difference. First operand 2167 states and 3678 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-23 18:28:09,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:28:09,974 INFO L93 Difference]: Finished difference Result 4990 states and 8542 transitions. [2024-11-23 18:28:09,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:28:09,975 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 141 [2024-11-23 18:28:09,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:28:09,997 INFO L225 Difference]: With dead ends: 4990 [2024-11-23 18:28:09,997 INFO L226 Difference]: Without dead ends: 3261 [2024-11-23 18:28:10,005 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 [2024-11-23 18:28:10,006 INFO L435 NwaCegarLoop]: 466 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, 923 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:28:10,006 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 923 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:28:10,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3261 states. [2024-11-23 18:28:10,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3261 to 3253. [2024-11-23 18:28:10,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3253 states, 2628 states have (on average 1.637366818873668) internal successors, (4303), 2635 states have internal predecessors, (4303), 591 states have call successors, (591), 30 states have call predecessors, (591), 33 states have return successors, (666), 590 states have call predecessors, (666), 590 states have call successors, (666) [2024-11-23 18:28:10,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3253 states to 3253 states and 5560 transitions. [2024-11-23 18:28:10,288 INFO L78 Accepts]: Start accepts. Automaton has 3253 states and 5560 transitions. Word has length 141 [2024-11-23 18:28:10,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:28:10,289 INFO L471 AbstractCegarLoop]: Abstraction has 3253 states and 5560 transitions. [2024-11-23 18:28:10,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-23 18:28:10,289 INFO L276 IsEmpty]: Start isEmpty. Operand 3253 states and 5560 transitions. [2024-11-23 18:28:10,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-23 18:28:10,308 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:28:10,308 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] [2024-11-23 18:28:10,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-23 18:28:10,309 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:28:10,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:28:10,309 INFO L85 PathProgramCache]: Analyzing trace with hash -705375600, now seen corresponding path program 1 times [2024-11-23 18:28:10,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:28:10,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993337853] [2024-11-23 18:28:10,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:28:10,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:28:10,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:28:10,384 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-23 18:28:10,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:28:10,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993337853] [2024-11-23 18:28:10,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993337853] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:28:10,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:28:10,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:28:10,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209959262] [2024-11-23 18:28:10,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:28:10,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:28:10,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:28:10,386 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:28:10,386 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:28:10,386 INFO L87 Difference]: Start difference. First operand 3253 states and 5560 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) [2024-11-23 18:28:10,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:28:10,634 INFO L93 Difference]: Finished difference Result 7831 states and 13464 transitions. [2024-11-23 18:28:10,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:28:10,634 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 [2024-11-23 18:28:10,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:28:10,669 INFO L225 Difference]: With dead ends: 7831 [2024-11-23 18:28:10,669 INFO L226 Difference]: Without dead ends: 5237 [2024-11-23 18:28:10,680 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 [2024-11-23 18:28:10,681 INFO L435 NwaCegarLoop]: 477 mSDtfsCounter, 89 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:28:10,681 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 942 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:28:10,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5237 states. [2024-11-23 18:28:11,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5237 to 5229. [2024-11-23 18:28:11,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5229 states, 4228 states have (on average 1.6319772942289499) internal successors, (6900), 4235 states have internal predecessors, (6900), 967 states have call successors, (967), 30 states have call predecessors, (967), 33 states have return successors, (1086), 966 states have call predecessors, (1086), 966 states have call successors, (1086) [2024-11-23 18:28:11,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5229 states to 5229 states and 8953 transitions. [2024-11-23 18:28:11,161 INFO L78 Accepts]: Start accepts. Automaton has 5229 states and 8953 transitions. Word has length 142 [2024-11-23 18:28:11,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:28:11,161 INFO L471 AbstractCegarLoop]: Abstraction has 5229 states and 8953 transitions. [2024-11-23 18:28:11,161 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) [2024-11-23 18:28:11,161 INFO L276 IsEmpty]: Start isEmpty. Operand 5229 states and 8953 transitions. [2024-11-23 18:28:11,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-23 18:28:11,192 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:28:11,192 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] [2024-11-23 18:28:11,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-23 18:28:11,193 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:28:11,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:28:11,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1718725587, now seen corresponding path program 1 times [2024-11-23 18:28:11,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:28:11,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951321397] [2024-11-23 18:28:11,194 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:28:11,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:28:11,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:28:11,268 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-23 18:28:11,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:28:11,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951321397] [2024-11-23 18:28:11,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951321397] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:28:11,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:28:11,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:28:11,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454606787] [2024-11-23 18:28:11,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:28:11,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:28:11,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:28:11,270 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:28:11,270 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:28:11,270 INFO L87 Difference]: Start difference. First operand 5229 states and 8953 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-23 18:28:11,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:28:11,668 INFO L93 Difference]: Finished difference Result 12840 states and 22129 transitions. [2024-11-23 18:28:11,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:28:11,669 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 143 [2024-11-23 18:28:11,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:28:11,729 INFO L225 Difference]: With dead ends: 12840 [2024-11-23 18:28:11,730 INFO L226 Difference]: Without dead ends: 8631 [2024-11-23 18:28:11,749 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 [2024-11-23 18:28:11,750 INFO L435 NwaCegarLoop]: 473 mSDtfsCounter, 87 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:28:11,750 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 934 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:28:11,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8631 states. [2024-11-23 18:28:12,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8631 to 8623. [2024-11-23 18:28:12,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8623 states, 7016 states have (on average 1.6305587229190421) internal successors, (11440), 7023 states have internal predecessors, (11440), 1573 states have call successors, (1573), 30 states have call predecessors, (1573), 33 states have return successors, (1770), 1572 states have call predecessors, (1770), 1572 states have call successors, (1770) [2024-11-23 18:28:12,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8623 states to 8623 states and 14783 transitions. [2024-11-23 18:28:12,473 INFO L78 Accepts]: Start accepts. Automaton has 8623 states and 14783 transitions. Word has length 143 [2024-11-23 18:28:12,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:28:12,474 INFO L471 AbstractCegarLoop]: Abstraction has 8623 states and 14783 transitions. [2024-11-23 18:28:12,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-23 18:28:12,474 INFO L276 IsEmpty]: Start isEmpty. Operand 8623 states and 14783 transitions. [2024-11-23 18:28:12,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-23 18:28:12,520 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:28:12,520 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] [2024-11-23 18:28:12,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-23 18:28:12,520 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:28:12,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:28:12,521 INFO L85 PathProgramCache]: Analyzing trace with hash -460164014, now seen corresponding path program 1 times [2024-11-23 18:28:12,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:28:12,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095167377] [2024-11-23 18:28:12,521 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:28:12,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:28:12,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:28:12,603 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-23 18:28:12,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:28:12,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095167377] [2024-11-23 18:28:12,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095167377] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:28:12,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:28:12,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:28:12,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404252958] [2024-11-23 18:28:12,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:28:12,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:28:12,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:28:12,605 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:28:12,605 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:28:12,606 INFO L87 Difference]: Start difference. First operand 8623 states and 14783 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) [2024-11-23 18:28:13,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:28:13,318 INFO L93 Difference]: Finished difference Result 22261 states and 38316 transitions. [2024-11-23 18:28:13,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:28:13,319 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 [2024-11-23 18:28:13,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:28:13,413 INFO L225 Difference]: With dead ends: 22261 [2024-11-23 18:28:13,413 INFO L226 Difference]: Without dead ends: 15058 [2024-11-23 18:28:13,450 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 [2024-11-23 18:28:13,452 INFO L435 NwaCegarLoop]: 471 mSDtfsCounter, 85 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 933 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:28:13,452 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 933 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:28:13,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15058 states. [2024-11-23 18:28:14,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15058 to 15050. [2024-11-23 18:28:14,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15050 states, 12240 states have (on average 1.6209150326797386) internal successors, (19840), 12247 states have internal predecessors, (19840), 2776 states have call successors, (2776), 30 states have call predecessors, (2776), 33 states have return successors, (3117), 2775 states have call predecessors, (3117), 2775 states have call successors, (3117) [2024-11-23 18:28:14,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15050 states to 15050 states and 25733 transitions. [2024-11-23 18:28:14,508 INFO L78 Accepts]: Start accepts. Automaton has 15050 states and 25733 transitions. Word has length 144 [2024-11-23 18:28:14,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:28:14,508 INFO L471 AbstractCegarLoop]: Abstraction has 15050 states and 25733 transitions. [2024-11-23 18:28:14,509 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) [2024-11-23 18:28:14,510 INFO L276 IsEmpty]: Start isEmpty. Operand 15050 states and 25733 transitions. [2024-11-23 18:28:14,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-23 18:28:14,568 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:28:14,569 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] [2024-11-23 18:28:14,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-23 18:28:14,569 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:28:14,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:28:14,570 INFO L85 PathProgramCache]: Analyzing trace with hash -873557996, now seen corresponding path program 1 times [2024-11-23 18:28:14,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:28:14,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752092492] [2024-11-23 18:28:14,571 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:28:14,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:28:14,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:28:14,650 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-23 18:28:14,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:28:14,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752092492] [2024-11-23 18:28:14,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752092492] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:28:14,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:28:14,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:28:14,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868565692] [2024-11-23 18:28:14,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:28:14,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:28:14,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:28:14,654 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:28:14,654 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:28:14,654 INFO L87 Difference]: Start difference. First operand 15050 states and 25733 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) [2024-11-23 18:28:15,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:28:15,548 INFO L93 Difference]: Finished difference Result 39777 states and 68319 transitions. [2024-11-23 18:28:15,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:28:15,549 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 [2024-11-23 18:28:15,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:28:15,685 INFO L225 Difference]: With dead ends: 39777 [2024-11-23 18:28:15,685 INFO L226 Difference]: Without dead ends: 26725 [2024-11-23 18:28:15,734 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 [2024-11-23 18:28:15,737 INFO L435 NwaCegarLoop]: 466 mSDtfsCounter, 83 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 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 [2024-11-23 18:28:15,738 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 926 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:28:15,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26725 states. [2024-11-23 18:28:17,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26725 to 26717. [2024-11-23 18:28:17,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26717 states, 21868 states have (on average 1.6162886409365282) internal successors, (35345), 21875 states have internal predecessors, (35345), 4815 states have call successors, (4815), 30 states have call predecessors, (4815), 33 states have return successors, (5430), 4814 states have call predecessors, (5430), 4814 states have call successors, (5430) [2024-11-23 18:28:17,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26717 states to 26717 states and 45590 transitions. [2024-11-23 18:28:17,311 INFO L78 Accepts]: Start accepts. Automaton has 26717 states and 45590 transitions. Word has length 145 [2024-11-23 18:28:17,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:28:17,312 INFO L471 AbstractCegarLoop]: Abstraction has 26717 states and 45590 transitions. [2024-11-23 18:28:17,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-23 18:28:17,312 INFO L276 IsEmpty]: Start isEmpty. Operand 26717 states and 45590 transitions. [2024-11-23 18:28:17,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-23 18:28:17,406 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:28:17,407 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, 1] [2024-11-23 18:28:17,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-23 18:28:17,407 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:28:17,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:28:17,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1496623500, now seen corresponding path program 1 times [2024-11-23 18:28:17,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:28:17,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222956755] [2024-11-23 18:28:17,412 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:28:17,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:28:17,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:28:17,514 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-23 18:28:17,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:28:17,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222956755] [2024-11-23 18:28:17,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222956755] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:28:17,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:28:17,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:28:17,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92653961] [2024-11-23 18:28:17,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:28:17,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:28:17,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:28:17,517 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:28:17,517 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:28:17,517 INFO L87 Difference]: Start difference. First operand 26717 states and 45590 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-23 18:28:19,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:28:19,342 INFO L93 Difference]: Finished difference Result 72729 states and 124551 transitions. [2024-11-23 18:28:19,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:28:19,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 146 [2024-11-23 18:28:19,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:28:19,595 INFO L225 Difference]: With dead ends: 72729 [2024-11-23 18:28:19,595 INFO L226 Difference]: Without dead ends: 48705 [2024-11-23 18:28:19,672 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 [2024-11-23 18:28:19,673 INFO L435 NwaCegarLoop]: 468 mSDtfsCounter, 81 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:28:19,673 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 928 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:28:19,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48705 states. [2024-11-23 18:28:22,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48705 to 48697. [2024-11-23 18:28:22,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48697 states, 40133 states have (on average 1.6100715122218623) internal successors, (64617), 40140 states have internal predecessors, (64617), 8530 states have call successors, (8530), 30 states have call predecessors, (8530), 33 states have return successors, (9677), 8529 states have call predecessors, (9677), 8529 states have call successors, (9677) [2024-11-23 18:28:22,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48697 states to 48697 states and 82824 transitions. [2024-11-23 18:28:22,556 INFO L78 Accepts]: Start accepts. Automaton has 48697 states and 82824 transitions. Word has length 146 [2024-11-23 18:28:22,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:28:22,557 INFO L471 AbstractCegarLoop]: Abstraction has 48697 states and 82824 transitions. [2024-11-23 18:28:22,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-23 18:28:22,557 INFO L276 IsEmpty]: Start isEmpty. Operand 48697 states and 82824 transitions. [2024-11-23 18:28:22,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-23 18:28:22,638 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:28:22,638 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, 1, 1] [2024-11-23 18:28:22,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-23 18:28:22,639 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:28:22,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:28:22,639 INFO L85 PathProgramCache]: Analyzing trace with hash 465433204, now seen corresponding path program 1 times [2024-11-23 18:28:22,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:28:22,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100134463] [2024-11-23 18:28:22,641 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:28:22,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:28:22,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:28:22,721 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-23 18:28:22,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:28:22,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100134463] [2024-11-23 18:28:22,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100134463] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:28:22,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:28:22,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:28:22,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671285183] [2024-11-23 18:28:22,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:28:22,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:28:22,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:28:22,723 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:28:22,723 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:28:22,724 INFO L87 Difference]: Start difference. First operand 48697 states and 82824 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-23 18:28:25,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:28:25,976 INFO L93 Difference]: Finished difference Result 90696 states and 154594 transitions. [2024-11-23 18:28:25,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:28:25,978 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 147 [2024-11-23 18:28:25,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:28:26,408 INFO L225 Difference]: With dead ends: 90696 [2024-11-23 18:28:26,408 INFO L226 Difference]: Without dead ends: 90461 [2024-11-23 18:28:26,439 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 [2024-11-23 18:28:26,442 INFO L435 NwaCegarLoop]: 475 mSDtfsCounter, 76 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 940 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:28:26,443 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 940 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:28:26,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90461 states. [2024-11-23 18:28:29,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90461 to 90453. [2024-11-23 18:28:30,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90453 states, 75090 states have (on average 1.602277267279265) internal successors, (120315), 75097 states have internal predecessors, (120315), 15329 states have call successors, (15329), 30 states have call predecessors, (15329), 33 states have return successors, (17522), 15328 states have call predecessors, (17522), 15328 states have call successors, (17522) [2024-11-23 18:28:30,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90453 states to 90453 states and 153166 transitions. [2024-11-23 18:28:30,457 INFO L78 Accepts]: Start accepts. Automaton has 90453 states and 153166 transitions. Word has length 147 [2024-11-23 18:28:30,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:28:30,459 INFO L471 AbstractCegarLoop]: Abstraction has 90453 states and 153166 transitions. [2024-11-23 18:28:30,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-23 18:28:30,459 INFO L276 IsEmpty]: Start isEmpty. Operand 90453 states and 153166 transitions. [2024-11-23 18:28:30,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-23 18:28:30,587 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:28:30,587 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, 1, 1, 1] [2024-11-23 18:28:30,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-23 18:28:30,587 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:28:30,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:28:30,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1752349261, now seen corresponding path program 1 times [2024-11-23 18:28:30,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:28:30,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836778811] [2024-11-23 18:28:30,588 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:28:30,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:28:30,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:28:31,554 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-23 18:28:31,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:28:31,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836778811] [2024-11-23 18:28:31,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836778811] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:28:31,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251558244] [2024-11-23 18:28:31,556 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:28:31,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:28:31,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba1592a-b37e-41f4-8ebe-b7d0ffc9beb6/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:28:31,559 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba1592a-b37e-41f4-8ebe-b7d0ffc9beb6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:28:31,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba1592a-b37e-41f4-8ebe-b7d0ffc9beb6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 18:28:31,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:28:31,951 INFO L256 TraceCheckSpWp]: Trace formula consists of 1118 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-23 18:28:31,956 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:28:32,211 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-23 18:28:32,211 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:28:32,713 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-23 18:28:32,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251558244] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:28:32,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:28:32,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 27 [2024-11-23 18:28:32,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276249974] [2024-11-23 18:28:32,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:28:32,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-23 18:28:32,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:28:32,716 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-23 18:28:32,717 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2024-11-23 18:28:32,718 INFO L87 Difference]: Start difference. First operand 90453 states and 153166 transitions. Second operand has 27 states, 26 states have (on average 9.423076923076923) internal successors, (245), 23 states have internal predecessors, (245), 9 states have call successors, (44), 8 states have call predecessors, (44), 11 states have return successors, (39), 11 states have call predecessors, (39), 9 states have call successors, (39) [2024-11-23 18:28:49,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:28:49,098 INFO L93 Difference]: Finished difference Result 361054 states and 635214 transitions. [2024-11-23 18:28:49,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2024-11-23 18:28:49,099 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 9.423076923076923) internal successors, (245), 23 states have internal predecessors, (245), 9 states have call successors, (44), 8 states have call predecessors, (44), 11 states have return successors, (39), 11 states have call predecessors, (39), 9 states have call successors, (39) Word has length 148 [2024-11-23 18:28:49,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:28:51,323 INFO L225 Difference]: With dead ends: 361054 [2024-11-23 18:28:51,324 INFO L226 Difference]: Without dead ends: 360841 [2024-11-23 18:28:51,458 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2768 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1127, Invalid=8575, Unknown=0, NotChecked=0, Total=9702 [2024-11-23 18:28:51,459 INFO L435 NwaCegarLoop]: 224 mSDtfsCounter, 4309 mSDsluCounter, 4188 mSDsCounter, 0 mSdLazyCounter, 8711 mSolverCounterSat, 1145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4363 SdHoareTripleChecker+Valid, 4412 SdHoareTripleChecker+Invalid, 9856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1145 IncrementalHoareTripleChecker+Valid, 8711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2024-11-23 18:28:51,459 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4363 Valid, 4412 Invalid, 9856 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1145 Valid, 8711 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2024-11-23 18:28:51,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360841 states.