./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-ir-usb.ko.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-ir-usb.ko.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d9b118296c3c6ba241fa831bfdb5289a0072e9871a56ce58ee16beb68bb5aa55 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 03:11:52,494 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 03:11:52,546 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-03-04 03:11:52,551 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 03:11:52,552 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 03:11:52,579 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 03:11:52,581 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 03:11:52,581 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 03:11:52,582 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 03:11:52,582 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 03:11:52,582 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 03:11:52,582 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 03:11:52,583 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 03:11:52,583 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 03:11:52,583 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 03:11:52,583 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 03:11:52,584 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 03:11:52,584 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 03:11:52,584 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 03:11:52,584 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 03:11:52,584 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 03:11:52,584 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 03:11:52,584 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 03:11:52,584 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 03:11:52,584 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 03:11:52,584 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 03:11:52,584 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 03:11:52,585 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 03:11:52,585 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 03:11:52,585 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 03:11:52,585 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 03:11:52,585 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 03:11:52,585 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 03:11:52,585 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 03:11:52,585 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 03:11:52,585 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 03:11:52,585 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 03:11:52,585 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 03:11:52,586 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 03:11:52,586 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 03:11:52,586 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d9b118296c3c6ba241fa831bfdb5289a0072e9871a56ce58ee16beb68bb5aa55 [2025-03-04 03:11:52,835 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 03:11:52,845 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 03:11:52,847 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 03:11:52,848 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 03:11:52,848 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 03:11:52,850 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-ir-usb.ko.cil.out.i [2025-03-04 03:11:53,990 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acb60ce73/81572d63ea934d42b739ae43acdf42aa/FLAG4512b1054 [2025-03-04 03:11:54,439 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 03:11:54,439 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-ir-usb.ko.cil.out.i [2025-03-04 03:11:54,465 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acb60ce73/81572d63ea934d42b739ae43acdf42aa/FLAG4512b1054 [2025-03-04 03:11:54,477 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acb60ce73/81572d63ea934d42b739ae43acdf42aa [2025-03-04 03:11:54,479 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 03:11:54,480 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 03:11:54,481 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 03:11:54,481 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 03:11:54,484 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 03:11:54,485 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 03:11:54" (1/1) ... [2025-03-04 03:11:54,486 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7347f1b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:11:54, skipping insertion in model container [2025-03-04 03:11:54,486 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 03:11:54" (1/1) ... [2025-03-04 03:11:54,543 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 03:11:55,078 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-ir-usb.ko.cil.out.i[146121,146134] [2025-03-04 03:11:55,116 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 03:11:55,156 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 03:11:55,373 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-ir-usb.ko.cil.out.i[146121,146134] [2025-03-04 03:11:55,384 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 03:11:55,434 INFO L204 MainTranslator]: Completed translation [2025-03-04 03:11:55,434 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:11:55 WrapperNode [2025-03-04 03:11:55,434 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 03:11:55,435 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 03:11:55,436 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 03:11:55,436 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 03:11:55,441 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:11:55" (1/1) ... [2025-03-04 03:11:55,479 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:11:55" (1/1) ... [2025-03-04 03:11:55,540 INFO L138 Inliner]: procedures = 82, calls = 541, calls flagged for inlining = 37, calls inlined = 37, statements flattened = 2109 [2025-03-04 03:11:55,541 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 03:11:55,541 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 03:11:55,541 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 03:11:55,541 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 03:11:55,551 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:11:55" (1/1) ... [2025-03-04 03:11:55,552 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:11:55" (1/1) ... [2025-03-04 03:11:55,570 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:11:55" (1/1) ... [2025-03-04 03:11:55,648 INFO L175 MemorySlicer]: Split 361 memory accesses to 21 slices as follows [2, 7, 2, 69, 1, 1, 1, 9, 9, 8, 8, 2, 8, 5, 48, 7, 7, 1, 7, 8, 151]. 42 percent of accesses are in the largest equivalence class. The 110 initializations are split as follows [2, 7, 0, 0, 1, 1, 0, 9, 9, 8, 8, 0, 8, 0, 14, 7, 7, 0, 7, 8, 14]. The 183 writes are split as follows [0, 0, 0, 69, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 13, 0, 0, 0, 0, 0, 100]. [2025-03-04 03:11:55,649 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:11:55" (1/1) ... [2025-03-04 03:11:55,650 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:11:55" (1/1) ... [2025-03-04 03:11:55,692 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:11:55" (1/1) ... [2025-03-04 03:11:55,735 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:11:55" (1/1) ... [2025-03-04 03:11:55,743 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:11:55" (1/1) ... [2025-03-04 03:11:55,748 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:11:55" (1/1) ... [2025-03-04 03:11:55,764 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 03:11:55,766 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 03:11:55,766 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 03:11:55,766 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 03:11:55,767 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:11:55" (1/1) ... [2025-03-04 03:11:55,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 03:11:55,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 03:11:55,795 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-04 03:11:55,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-04 03:11:55,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 03:11:55,820 INFO L130 BoogieDeclarations]: Found specification of procedure ir_init [2025-03-04 03:11:55,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ir_init [2025-03-04 03:11:55,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2025-03-04 03:11:55,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2025-03-04 03:11:55,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2025-03-04 03:11:55,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2025-03-04 03:11:55,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2025-03-04 03:11:55,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2025-03-04 03:11:55,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2025-03-04 03:11:55,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2025-03-04 03:11:55,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#8 [2025-03-04 03:11:55,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#9 [2025-03-04 03:11:55,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#10 [2025-03-04 03:11:55,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#11 [2025-03-04 03:11:55,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#12 [2025-03-04 03:11:55,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#13 [2025-03-04 03:11:55,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#14 [2025-03-04 03:11:55,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#15 [2025-03-04 03:11:55,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#16 [2025-03-04 03:11:55,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#17 [2025-03-04 03:11:55,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#18 [2025-03-04 03:11:55,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#19 [2025-03-04 03:11:55,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#20 [2025-03-04 03:11:55,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-04 03:11:55,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-04 03:11:55,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-04 03:11:55,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-03-04 03:11:55,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2025-03-04 03:11:55,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2025-03-04 03:11:55,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2025-03-04 03:11:55,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2025-03-04 03:11:55,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2025-03-04 03:11:55,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2025-03-04 03:11:55,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#10 [2025-03-04 03:11:55,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#11 [2025-03-04 03:11:55,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#12 [2025-03-04 03:11:55,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#13 [2025-03-04 03:11:55,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#14 [2025-03-04 03:11:55,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#15 [2025-03-04 03:11:55,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#16 [2025-03-04 03:11:55,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#17 [2025-03-04 03:11:55,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#18 [2025-03-04 03:11:55,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#19 [2025-03-04 03:11:55,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#20 [2025-03-04 03:11:55,823 INFO L130 BoogieDeclarations]: Found specification of procedure ir_exit [2025-03-04 03:11:55,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ir_exit [2025-03-04 03:11:55,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2025-03-04 03:11:55,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2025-03-04 03:11:55,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2025-03-04 03:11:55,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2025-03-04 03:11:55,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2025-03-04 03:11:55,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2025-03-04 03:11:55,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2025-03-04 03:11:55,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2025-03-04 03:11:55,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#8 [2025-03-04 03:11:55,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#9 [2025-03-04 03:11:55,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#10 [2025-03-04 03:11:55,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#11 [2025-03-04 03:11:55,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#12 [2025-03-04 03:11:55,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#13 [2025-03-04 03:11:55,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#14 [2025-03-04 03:11:55,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#15 [2025-03-04 03:11:55,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#16 [2025-03-04 03:11:55,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#17 [2025-03-04 03:11:55,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#18 [2025-03-04 03:11:55,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#19 [2025-03-04 03:11:55,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#20 [2025-03-04 03:11:55,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-04 03:11:55,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-04 03:11:55,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-04 03:11:55,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-04 03:11:55,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-04 03:11:55,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-03-04 03:11:55,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2025-03-04 03:11:55,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2025-03-04 03:11:55,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2025-03-04 03:11:55,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2025-03-04 03:11:55,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2025-03-04 03:11:55,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2025-03-04 03:11:55,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2025-03-04 03:11:55,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2025-03-04 03:11:55,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2025-03-04 03:11:55,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2025-03-04 03:11:55,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#16 [2025-03-04 03:11:55,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#17 [2025-03-04 03:11:55,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#18 [2025-03-04 03:11:55,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#19 [2025-03-04 03:11:55,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#20 [2025-03-04 03:11:55,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-04 03:11:55,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-04 03:11:55,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-04 03:11:55,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-03-04 03:11:55,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-03-04 03:11:55,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2025-03-04 03:11:55,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2025-03-04 03:11:55,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2025-03-04 03:11:55,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2025-03-04 03:11:55,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2025-03-04 03:11:55,825 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#10 [2025-03-04 03:11:55,825 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#11 [2025-03-04 03:11:55,825 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#12 [2025-03-04 03:11:55,827 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#13 [2025-03-04 03:11:55,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#14 [2025-03-04 03:11:55,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#15 [2025-03-04 03:11:55,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#16 [2025-03-04 03:11:55,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#17 [2025-03-04 03:11:55,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#18 [2025-03-04 03:11:55,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#19 [2025-03-04 03:11:55,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#20 [2025-03-04 03:11:55,828 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2025-03-04 03:11:55,828 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2025-03-04 03:11:55,828 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2025-03-04 03:11:55,828 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2025-03-04 03:11:55,828 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2025-03-04 03:11:55,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2025-03-04 03:11:55,828 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2025-03-04 03:11:55,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2025-03-04 03:11:55,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-04 03:11:55,828 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2025-03-04 03:11:55,828 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2025-03-04 03:11:55,828 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2025-03-04 03:11:55,828 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2025-03-04 03:11:55,828 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2025-03-04 03:11:55,828 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2025-03-04 03:11:55,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-04 03:11:55,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-04 03:11:55,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-04 03:11:55,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-04 03:11:55,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-04 03:11:55,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-03-04 03:11:55,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2025-03-04 03:11:55,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2025-03-04 03:11:55,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2025-03-04 03:11:55,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2025-03-04 03:11:55,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2025-03-04 03:11:55,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2025-03-04 03:11:55,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2025-03-04 03:11:55,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2025-03-04 03:11:55,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2025-03-04 03:11:55,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#15 [2025-03-04 03:11:55,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#16 [2025-03-04 03:11:55,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#17 [2025-03-04 03:11:55,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#18 [2025-03-04 03:11:55,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#19 [2025-03-04 03:11:55,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#20 [2025-03-04 03:11:55,829 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_deregister [2025-03-04 03:11:55,829 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_deregister [2025-03-04 03:11:55,829 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume_stop [2025-03-04 03:11:55,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume_stop [2025-03-04 03:11:55,829 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2025-03-04 03:11:55,829 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2025-03-04 03:11:55,829 INFO L130 BoogieDeclarations]: Found specification of procedure ir_xbof_change [2025-03-04 03:11:55,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ir_xbof_change [2025-03-04 03:11:55,829 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_pointer [2025-03-04 03:11:55,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_pointer [2025-03-04 03:11:55,829 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_uint_must_check_helper [2025-03-04 03:11:55,829 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_uint_must_check_helper [2025-03-04 03:11:55,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 03:11:55,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-04 03:11:55,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-04 03:11:55,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-04 03:11:55,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-04 03:11:55,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-04 03:11:55,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-04 03:11:55,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-03-04 03:11:55,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-03-04 03:11:55,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-03-04 03:11:55,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-03-04 03:11:55,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-03-04 03:11:55,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-03-04 03:11:55,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2025-03-04 03:11:55,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2025-03-04 03:11:55,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2025-03-04 03:11:55,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2025-03-04 03:11:55,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2025-03-04 03:11:55,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2025-03-04 03:11:55,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2025-03-04 03:11:55,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#20 [2025-03-04 03:11:55,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-04 03:11:55,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 03:11:55,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 03:11:56,155 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 03:11:56,157 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 03:11:56,234 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L5147: havoc usb_serial_register_#t~nondet168#1; [2025-03-04 03:11:56,235 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L5136: havoc usb_register_driver_#t~nondet166#1; [2025-03-04 03:11:56,260 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L3726: havoc #t~mem11;havoc #t~bitwise12; [2025-03-04 03:11:56,274 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L5075: havoc #t~malloc156.base, #t~malloc156.offset; [2025-03-04 03:11:56,277 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_assume_stopFINAL: assume true; [2025-03-04 03:11:56,318 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L4096: assume false; [2025-03-04 03:11:56,319 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L4096: assume !false; [2025-03-04 03:11:56,339 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L5102: havoc #t~nondet161; [2025-03-04 03:11:56,342 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L5089: havoc #t~nondet159; [2025-03-04 03:11:56,350 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L5078: havoc __kmalloc_#t~ret157#1.base, __kmalloc_#t~ret157#1.offset; [2025-03-04 03:11:56,352 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L5098: havoc #t~ret160.base, #t~ret160.offset; [2025-03-04 03:12:01,733 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L4236: assume false; [2025-03-04 03:12:01,733 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L4236: assume !false; [2025-03-04 03:12:01,733 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L5129: havoc usb_control_msg_#t~nondet165#1; [2025-03-04 03:12:01,733 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L5064: havoc __kfifo_out_#t~nondet152#1; [2025-03-04 03:12:01,733 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L5068: havoc __kfifo_out_r_#t~nondet153#1; [2025-03-04 03:12:01,733 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L4514: assume false; [2025-03-04 03:12:01,734 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L4514: assume !false; [2025-03-04 03:12:01,734 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L5143: havoc usb_serial_generic_open_#t~nondet167#1; [2025-03-04 03:12:01,734 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L5112: havoc tty_get_baud_rate_#t~nondet162#1; [2025-03-04 03:12:01,734 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L5082: havoc _raw_spin_lock_irqsave_#t~nondet158#1; [2025-03-04 03:12:01,734 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L5116: havoc tty_insert_flip_string_fixed_flag_#t~nondet163#1; [2025-03-04 03:12:01,734 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L4853: assume false; [2025-03-04 03:12:01,734 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L4853: assume !false; [2025-03-04 03:12:01,734 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L5151: havoc usb_submit_urb_#t~nondet169#1; [2025-03-04 03:12:01,734 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L5122: havoc tty_port_tty_get_#t~ret164#1.base, tty_port_tty_get_#t~ret164#1.offset; [2025-03-04 03:12:01,819 INFO L? ?]: Removed 481 outVars from TransFormulas that were not future-live. [2025-03-04 03:12:01,819 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 03:12:01,844 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 03:12:01,846 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 03:12:01,847 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:12:01 BoogieIcfgContainer [2025-03-04 03:12:01,847 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 03:12:01,849 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 03:12:01,849 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 03:12:01,852 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 03:12:01,852 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 03:11:54" (1/3) ... [2025-03-04 03:12:01,853 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e32bd54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 03:12:01, skipping insertion in model container [2025-03-04 03:12:01,853 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:11:55" (2/3) ... [2025-03-04 03:12:01,853 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e32bd54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 03:12:01, skipping insertion in model container [2025-03-04 03:12:01,854 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:12:01" (3/3) ... [2025-03-04 03:12:01,855 INFO L128 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-usb-serial-ir-usb.ko.cil.out.i [2025-03-04 03:12:01,865 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 03:12:01,868 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG usb_urb-drivers-usb-serial-ir-usb.ko.cil.out.i that has 16 procedures, 401 locations, 1 initial locations, 23 loop locations, and 1 error locations. [2025-03-04 03:12:01,920 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 03:12:01,929 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;@1951b0d6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 03:12:01,930 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-04 03:12:01,934 INFO L276 IsEmpty]: Start isEmpty. Operand has 400 states, 338 states have (on average 1.4023668639053255) internal successors, (474), 348 states have internal predecessors, (474), 46 states have call successors, (46), 15 states have call predecessors, (46), 14 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) [2025-03-04 03:12:01,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-03-04 03:12:01,940 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 03:12:01,941 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 03:12:01,941 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 03:12:01,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 03:12:01,945 INFO L85 PathProgramCache]: Analyzing trace with hash 2020459055, now seen corresponding path program 1 times [2025-03-04 03:12:01,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 03:12:01,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858050925] [2025-03-04 03:12:01,951 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 03:12:01,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 03:12:05,920 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-04 03:12:06,172 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-04 03:12:06,173 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 03:12:06,173 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 03:12:06,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 03:12:06,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 03:12:06,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858050925] [2025-03-04 03:12:06,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858050925] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 03:12:06,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 03:12:06,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 03:12:06,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322979867] [2025-03-04 03:12:06,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 03:12:06,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 03:12:06,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 03:12:06,705 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 03:12:06,706 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 03:12:06,708 INFO L87 Difference]: Start difference. First operand has 400 states, 338 states have (on average 1.4023668639053255) internal successors, (474), 348 states have internal predecessors, (474), 46 states have call successors, (46), 15 states have call predecessors, (46), 14 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 03:12:07,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 03:12:07,135 INFO L93 Difference]: Finished difference Result 1146 states and 1633 transitions. [2025-03-04 03:12:07,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 03:12:07,137 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2025-03-04 03:12:07,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 03:12:07,147 INFO L225 Difference]: With dead ends: 1146 [2025-03-04 03:12:07,148 INFO L226 Difference]: Without dead ends: 758 [2025-03-04 03:12:07,153 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 03:12:07,156 INFO L435 NwaCegarLoop]: 558 mSDtfsCounter, 521 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 1040 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-04 03:12:07,157 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [521 Valid, 1040 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-04 03:12:07,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2025-03-04 03:12:07,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 755. [2025-03-04 03:12:07,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 755 states, 645 states have (on average 1.3224806201550388) internal successors, (853), 655 states have internal predecessors, (853), 84 states have call successors, (84), 26 states have call predecessors, (84), 25 states have return successors, (81), 79 states have call predecessors, (81), 81 states have call successors, (81) [2025-03-04 03:12:07,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 1018 transitions. [2025-03-04 03:12:07,245 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 1018 transitions. Word has length 18 [2025-03-04 03:12:07,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 03:12:07,247 INFO L471 AbstractCegarLoop]: Abstraction has 755 states and 1018 transitions. [2025-03-04 03:12:07,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 03:12:07,247 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 1018 transitions. [2025-03-04 03:12:07,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-03-04 03:12:07,249 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 03:12:07,249 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 03:12:07,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 03:12:07,250 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 03:12:07,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 03:12:07,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1790862783, now seen corresponding path program 1 times [2025-03-04 03:12:07,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 03:12:07,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450907695] [2025-03-04 03:12:07,250 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 03:12:07,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 03:12:10,952 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-04 03:12:11,021 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-04 03:12:11,021 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 03:12:11,021 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 03:12:11,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 03:12:11,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 03:12:11,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450907695] [2025-03-04 03:12:11,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450907695] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 03:12:11,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 03:12:11,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 03:12:11,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720536175] [2025-03-04 03:12:11,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 03:12:11,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 03:12:11,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 03:12:11,334 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 03:12:11,334 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 03:12:11,334 INFO L87 Difference]: Start difference. First operand 755 states and 1018 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 03:12:11,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 03:12:11,480 INFO L93 Difference]: Finished difference Result 757 states and 1019 transitions. [2025-03-04 03:12:11,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 03:12:11,480 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2025-03-04 03:12:11,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 03:12:11,484 INFO L225 Difference]: With dead ends: 757 [2025-03-04 03:12:11,484 INFO L226 Difference]: Without dead ends: 745 [2025-03-04 03:12:11,484 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 03:12:11,485 INFO L435 NwaCegarLoop]: 511 mSDtfsCounter, 516 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 03:12:11,485 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [516 Valid, 511 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 03:12:11,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2025-03-04 03:12:11,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 745. [2025-03-04 03:12:11,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 745 states, 639 states have (on average 1.3192488262910798) internal successors, (843), 647 states have internal predecessors, (843), 81 states have call successors, (81), 25 states have call predecessors, (81), 24 states have return successors, (79), 77 states have call predecessors, (79), 79 states have call successors, (79) [2025-03-04 03:12:11,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 1003 transitions. [2025-03-04 03:12:11,515 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 1003 transitions. Word has length 19 [2025-03-04 03:12:11,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 03:12:11,516 INFO L471 AbstractCegarLoop]: Abstraction has 745 states and 1003 transitions. [2025-03-04 03:12:11,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 03:12:11,517 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 1003 transitions. [2025-03-04 03:12:11,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2025-03-04 03:12:11,521 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 03:12:11,521 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-04 03:12:11,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-04 03:12:11,521 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 03:12:11,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 03:12:11,524 INFO L85 PathProgramCache]: Analyzing trace with hash -761168523, now seen corresponding path program 1 times [2025-03-04 03:12:11,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 03:12:11,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880803501] [2025-03-04 03:12:11,524 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 03:12:11,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 03:12:15,012 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 81 statements into 1 equivalence classes. [2025-03-04 03:12:15,099 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 81 of 81 statements. [2025-03-04 03:12:15,099 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 03:12:15,099 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 03:12:15,855 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-04 03:12:15,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 03:12:15,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880803501] [2025-03-04 03:12:15,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880803501] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 03:12:15,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 03:12:15,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 03:12:15,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751467627] [2025-03-04 03:12:15,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 03:12:15,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 03:12:15,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 03:12:15,858 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 03:12:15,858 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 03:12:15,858 INFO L87 Difference]: Start difference. First operand 745 states and 1003 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-04 03:12:16,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 03:12:16,403 INFO L93 Difference]: Finished difference Result 1443 states and 1945 transitions. [2025-03-04 03:12:16,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 03:12:16,405 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 81 [2025-03-04 03:12:16,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 03:12:16,415 INFO L225 Difference]: With dead ends: 1443 [2025-03-04 03:12:16,415 INFO L226 Difference]: Without dead ends: 721 [2025-03-04 03:12:16,417 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 03:12:16,418 INFO L435 NwaCegarLoop]: 507 mSDtfsCounter, 0 mSDsluCounter, 1006 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1513 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-04 03:12:16,418 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1513 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-04 03:12:16,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2025-03-04 03:12:16,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 721. [2025-03-04 03:12:16,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 623 states have (on average 1.317817014446228) internal successors, (821), 628 states have internal predecessors, (821), 74 states have call successors, (74), 24 states have call predecessors, (74), 23 states have return successors, (72), 71 states have call predecessors, (72), 72 states have call successors, (72) [2025-03-04 03:12:16,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 967 transitions. [2025-03-04 03:12:16,441 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 967 transitions. Word has length 81 [2025-03-04 03:12:16,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 03:12:16,442 INFO L471 AbstractCegarLoop]: Abstraction has 721 states and 967 transitions. [2025-03-04 03:12:16,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-04 03:12:16,442 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 967 transitions. [2025-03-04 03:12:16,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-03-04 03:12:16,447 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 03:12:16,447 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-04 03:12:16,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-04 03:12:16,447 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 03:12:16,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 03:12:16,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1375816596, now seen corresponding path program 1 times [2025-03-04 03:12:16,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 03:12:16,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252883353] [2025-03-04 03:12:16,448 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 03:12:16,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 03:12:19,886 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-03-04 03:12:19,946 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-03-04 03:12:19,947 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 03:12:19,947 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 03:12:21,375 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 03:12:21,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 03:12:21,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252883353] [2025-03-04 03:12:21,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252883353] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 03:12:21,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 03:12:21,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-04 03:12:21,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321065302] [2025-03-04 03:12:21,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 03:12:21,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 03:12:21,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 03:12:21,382 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 03:12:21,382 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-04 03:12:21,382 INFO L87 Difference]: Start difference. First operand 721 states and 967 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-04 03:12:22,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 03:12:22,226 INFO L93 Difference]: Finished difference Result 1106 states and 1486 transitions. [2025-03-04 03:12:22,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-04 03:12:22,226 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 79 [2025-03-04 03:12:22,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 03:12:22,230 INFO L225 Difference]: With dead ends: 1106 [2025-03-04 03:12:22,231 INFO L226 Difference]: Without dead ends: 735 [2025-03-04 03:12:22,235 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-04 03:12:22,236 INFO L435 NwaCegarLoop]: 506 mSDtfsCounter, 0 mSDsluCounter, 2523 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3029 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-04 03:12:22,236 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3029 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-04 03:12:22,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2025-03-04 03:12:22,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 735. [2025-03-04 03:12:22,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 633 states have (on average 1.3127962085308056) internal successors, (831), 638 states have internal predecessors, (831), 74 states have call successors, (74), 24 states have call predecessors, (74), 27 states have return successors, (80), 75 states have call predecessors, (80), 72 states have call successors, (80) [2025-03-04 03:12:22,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 985 transitions. [2025-03-04 03:12:22,254 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 985 transitions. Word has length 79 [2025-03-04 03:12:22,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 03:12:22,255 INFO L471 AbstractCegarLoop]: Abstraction has 735 states and 985 transitions. [2025-03-04 03:12:22,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-04 03:12:22,255 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 985 transitions. [2025-03-04 03:12:22,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-03-04 03:12:22,257 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 03:12:22,257 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-04 03:12:22,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-04 03:12:22,257 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 03:12:22,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 03:12:22,258 INFO L85 PathProgramCache]: Analyzing trace with hash 675167402, now seen corresponding path program 1 times [2025-03-04 03:12:22,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 03:12:22,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729007134] [2025-03-04 03:12:22,258 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 03:12:22,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 03:12:25,663 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-03-04 03:12:25,705 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-03-04 03:12:25,705 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 03:12:25,705 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 03:12:26,861 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 03:12:26,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 03:12:26,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729007134] [2025-03-04 03:12:26,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729007134] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 03:12:26,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 03:12:26,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-04 03:12:26,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863682469] [2025-03-04 03:12:26,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 03:12:26,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-04 03:12:26,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 03:12:26,863 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-04 03:12:26,863 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-04 03:12:26,863 INFO L87 Difference]: Start difference. First operand 735 states and 985 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 7 states have internal predecessors, (64), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-04 03:12:28,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 03:12:28,415 INFO L93 Difference]: Finished difference Result 1114 states and 1494 transitions. [2025-03-04 03:12:28,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-04 03:12:28,415 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 7 states have internal predecessors, (64), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 79 [2025-03-04 03:12:28,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 03:12:28,418 INFO L225 Difference]: With dead ends: 1114 [2025-03-04 03:12:28,418 INFO L226 Difference]: Without dead ends: 736 [2025-03-04 03:12:28,419 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-04 03:12:28,420 INFO L435 NwaCegarLoop]: 502 mSDtfsCounter, 17 mSDsluCounter, 3478 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 3980 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-03-04 03:12:28,420 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 3980 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-03-04 03:12:28,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2025-03-04 03:12:28,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 735. [2025-03-04 03:12:28,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 633 states have (on average 1.311216429699842) internal successors, (830), 638 states have internal predecessors, (830), 74 states have call successors, (74), 24 states have call predecessors, (74), 27 states have return successors, (80), 75 states have call predecessors, (80), 72 states have call successors, (80) [2025-03-04 03:12:28,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 984 transitions. [2025-03-04 03:12:28,442 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 984 transitions. Word has length 79 [2025-03-04 03:12:28,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 03:12:28,443 INFO L471 AbstractCegarLoop]: Abstraction has 735 states and 984 transitions. [2025-03-04 03:12:28,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 7 states have internal predecessors, (64), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-04 03:12:28,443 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 984 transitions. [2025-03-04 03:12:28,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2025-03-04 03:12:28,445 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 03:12:28,445 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-04 03:12:28,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-04 03:12:28,446 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 03:12:28,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 03:12:28,446 INFO L85 PathProgramCache]: Analyzing trace with hash 230668085, now seen corresponding path program 1 times [2025-03-04 03:12:28,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 03:12:28,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110679204] [2025-03-04 03:12:28,447 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 03:12:28,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 03:12:31,935 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 81 statements into 1 equivalence classes. [2025-03-04 03:12:31,987 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 81 of 81 statements. [2025-03-04 03:12:31,987 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 03:12:31,987 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 03:12:32,523 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-04 03:12:32,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 03:12:32,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110679204] [2025-03-04 03:12:32,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110679204] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 03:12:32,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 03:12:32,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 03:12:32,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911319701] [2025-03-04 03:12:32,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 03:12:32,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 03:12:32,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 03:12:32,525 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 03:12:32,525 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 03:12:32,525 INFO L87 Difference]: Start difference. First operand 735 states and 984 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 4 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2025-03-04 03:12:36,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-04 03:12:39,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 03:12:39,169 INFO L93 Difference]: Finished difference Result 1114 states and 1493 transitions. [2025-03-04 03:12:39,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 03:12:39,169 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 4 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 81 [2025-03-04 03:12:39,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 03:12:39,173 INFO L225 Difference]: With dead ends: 1114 [2025-03-04 03:12:39,173 INFO L226 Difference]: Without dead ends: 1111 [2025-03-04 03:12:39,174 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 03:12:39,174 INFO L435 NwaCegarLoop]: 935 mSDtfsCounter, 918 mSDsluCounter, 1062 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 1997 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2025-03-04 03:12:39,176 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 1997 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 220 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2025-03-04 03:12:39,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1111 states. [2025-03-04 03:12:39,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1111 to 1097. [2025-03-04 03:12:39,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1097 states, 946 states have (on average 1.313953488372093) internal successors, (1243), 954 states have internal predecessors, (1243), 111 states have call successors, (111), 34 states have call predecessors, (111), 39 states have return successors, (123), 113 states have call predecessors, (123), 109 states have call successors, (123) [2025-03-04 03:12:39,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1097 states to 1097 states and 1477 transitions. [2025-03-04 03:12:39,209 INFO L78 Accepts]: Start accepts. Automaton has 1097 states and 1477 transitions. Word has length 81 [2025-03-04 03:12:39,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 03:12:39,210 INFO L471 AbstractCegarLoop]: Abstraction has 1097 states and 1477 transitions. [2025-03-04 03:12:39,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 4 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2025-03-04 03:12:39,210 INFO L276 IsEmpty]: Start isEmpty. Operand 1097 states and 1477 transitions. [2025-03-04 03:12:39,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2025-03-04 03:12:39,212 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 03:12:39,212 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-04 03:12:39,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-04 03:12:39,213 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 03:12:39,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 03:12:39,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1073065171, now seen corresponding path program 1 times [2025-03-04 03:12:39,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 03:12:39,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335031522] [2025-03-04 03:12:39,213 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 03:12:39,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 03:12:42,602 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 99 statements into 1 equivalence classes. [2025-03-04 03:12:42,650 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 99 of 99 statements. [2025-03-04 03:12:42,651 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 03:12:42,651 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 03:12:43,341 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-04 03:12:43,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 03:12:43,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335031522] [2025-03-04 03:12:43,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335031522] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 03:12:43,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 03:12:43,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 03:12:43,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847761760] [2025-03-04 03:12:43,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 03:12:43,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 03:12:43,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 03:12:43,343 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 03:12:43,343 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 03:12:43,343 INFO L87 Difference]: Start difference. First operand 1097 states and 1477 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-04 03:12:44,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 03:12:44,880 INFO L93 Difference]: Finished difference Result 3263 states and 4401 transitions. [2025-03-04 03:12:44,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-04 03:12:44,881 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 99 [2025-03-04 03:12:44,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 03:12:44,889 INFO L225 Difference]: With dead ends: 3263 [2025-03-04 03:12:44,889 INFO L226 Difference]: Without dead ends: 2189 [2025-03-04 03:12:44,891 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-04 03:12:44,892 INFO L435 NwaCegarLoop]: 498 mSDtfsCounter, 522 mSDsluCounter, 1438 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 1936 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-04 03:12:44,893 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [523 Valid, 1936 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-04 03:12:44,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2189 states. [2025-03-04 03:12:44,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2189 to 2141. [2025-03-04 03:12:44,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2141 states, 1848 states have (on average 1.3198051948051948) internal successors, (2439), 1865 states have internal predecessors, (2439), 215 states have call successors, (215), 63 states have call predecessors, (215), 77 states have return successors, (244), 221 states have call predecessors, (244), 213 states have call successors, (244) [2025-03-04 03:12:44,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2141 states to 2141 states and 2898 transitions. [2025-03-04 03:12:44,982 INFO L78 Accepts]: Start accepts. Automaton has 2141 states and 2898 transitions. Word has length 99 [2025-03-04 03:12:44,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 03:12:44,982 INFO L471 AbstractCegarLoop]: Abstraction has 2141 states and 2898 transitions. [2025-03-04 03:12:44,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-04 03:12:44,983 INFO L276 IsEmpty]: Start isEmpty. Operand 2141 states and 2898 transitions. [2025-03-04 03:12:44,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2025-03-04 03:12:44,985 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 03:12:44,985 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-04 03:12:44,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-04 03:12:44,985 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 03:12:44,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 03:12:44,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1897153809, now seen corresponding path program 1 times [2025-03-04 03:12:44,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 03:12:44,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372443168] [2025-03-04 03:12:44,986 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 03:12:44,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 03:12:48,342 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 99 statements into 1 equivalence classes. [2025-03-04 03:12:48,392 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 99 of 99 statements. [2025-03-04 03:12:48,392 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 03:12:48,392 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 03:12:50,581 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-04 03:12:50,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 03:12:50,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372443168] [2025-03-04 03:12:50,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372443168] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 03:12:50,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71133302] [2025-03-04 03:12:50,581 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 03:12:50,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 03:12:50,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 03:12:50,584 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 03:12:50,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-04 03:12:54,598 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 99 statements into 1 equivalence classes. [2025-03-04 03:12:54,861 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 99 of 99 statements. [2025-03-04 03:12:54,861 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 03:12:54,862 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 03:12:54,874 INFO L256 TraceCheckSpWp]: Trace formula consists of 3173 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-04 03:12:54,881 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 03:12:54,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-04 03:12:54,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2025-03-04 03:12:56,379 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-04 03:12:56,380 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 03:12:56,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71133302] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 03:12:56,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 03:12:56,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 14 [2025-03-04 03:12:56,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565666543] [2025-03-04 03:12:56,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 03:12:56,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 03:12:56,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 03:12:56,381 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 03:12:56,381 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2025-03-04 03:12:56,381 INFO L87 Difference]: Start difference. First operand 2141 states and 2898 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-04 03:12:57,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 03:12:57,108 INFO L93 Difference]: Finished difference Result 4247 states and 5748 transitions. [2025-03-04 03:12:57,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 03:12:57,108 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 99 [2025-03-04 03:12:57,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 03:12:57,116 INFO L225 Difference]: With dead ends: 4247 [2025-03-04 03:12:57,116 INFO L226 Difference]: Without dead ends: 2099 [2025-03-04 03:12:57,120 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2025-03-04 03:12:57,120 INFO L435 NwaCegarLoop]: 485 mSDtfsCounter, 490 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-04 03:12:57,120 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 968 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-04 03:12:57,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2099 states. [2025-03-04 03:12:57,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2099 to 2099. [2025-03-04 03:12:57,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2099 states, 1815 states have (on average 1.3074380165289257) internal successors, (2373), 1829 states have internal predecessors, (2373), 209 states have call successors, (209), 63 states have call predecessors, (209), 74 states have return successors, (235), 215 states have call predecessors, (235), 207 states have call successors, (235) [2025-03-04 03:12:57,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2099 states to 2099 states and 2817 transitions. [2025-03-04 03:12:57,177 INFO L78 Accepts]: Start accepts. Automaton has 2099 states and 2817 transitions. Word has length 99 [2025-03-04 03:12:57,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 03:12:57,178 INFO L471 AbstractCegarLoop]: Abstraction has 2099 states and 2817 transitions. [2025-03-04 03:12:57,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-04 03:12:57,178 INFO L276 IsEmpty]: Start isEmpty. Operand 2099 states and 2817 transitions. [2025-03-04 03:12:57,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2025-03-04 03:12:57,180 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 03:12:57,180 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-04 03:12:57,194 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-04 03:12:57,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 03:12:57,381 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 03:12:57,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 03:12:57,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1446231015, now seen corresponding path program 1 times [2025-03-04 03:12:57,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 03:12:57,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149423688] [2025-03-04 03:12:57,382 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 03:12:57,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 03:13:00,912 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 107 statements into 1 equivalence classes. [2025-03-04 03:13:00,964 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 107 of 107 statements. [2025-03-04 03:13:00,964 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 03:13:00,964 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 03:13:03,202 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-04 03:13:03,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 03:13:03,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149423688] [2025-03-04 03:13:03,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149423688] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 03:13:03,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982484381] [2025-03-04 03:13:03,203 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 03:13:03,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 03:13:03,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 03:13:03,205 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 03:13:03,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-04 03:13:07,195 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 107 statements into 1 equivalence classes. [2025-03-04 03:13:07,450 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 107 of 107 statements. [2025-03-04 03:13:07,450 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 03:13:07,450 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 03:13:07,461 INFO L256 TraceCheckSpWp]: Trace formula consists of 3180 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-03-04 03:13:07,466 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 03:13:08,489 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-04 03:13:08,489 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 03:13:09,825 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-04 03:13:09,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982484381] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 03:13:09,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 03:13:09,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 16 [2025-03-04 03:13:09,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550417443] [2025-03-04 03:13:09,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 03:13:09,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-04 03:13:09,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 03:13:09,827 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-04 03:13:09,827 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2025-03-04 03:13:09,827 INFO L87 Difference]: Start difference. First operand 2099 states and 2817 transitions. Second operand has 16 states, 16 states have (on average 6.4375) internal successors, (103), 14 states have internal predecessors, (103), 4 states have call successors, (16), 2 states have call predecessors, (16), 6 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) [2025-03-04 03:13:13,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 03:13:13,709 INFO L93 Difference]: Finished difference Result 2925 states and 3919 transitions. [2025-03-04 03:13:13,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-04 03:13:13,710 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.4375) internal successors, (103), 14 states have internal predecessors, (103), 4 states have call successors, (16), 2 states have call predecessors, (16), 6 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) Word has length 107 [2025-03-04 03:13:13,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 03:13:13,715 INFO L225 Difference]: With dead ends: 2925 [2025-03-04 03:13:13,715 INFO L226 Difference]: Without dead ends: 1498 [2025-03-04 03:13:13,718 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2025-03-04 03:13:13,719 INFO L435 NwaCegarLoop]: 493 mSDtfsCounter, 26 mSDsluCounter, 6828 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 7321 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2025-03-04 03:13:13,719 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 7321 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2025-03-04 03:13:13,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1498 states. [2025-03-04 03:13:13,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1498 to 1492. [2025-03-04 03:13:13,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1492 states, 1278 states have (on average 1.2981220657276995) internal successors, (1659), 1290 states have internal predecessors, (1659), 153 states have call successors, (153), 55 states have call predecessors, (153), 60 states have return successors, (167), 153 states have call predecessors, (167), 151 states have call successors, (167) [2025-03-04 03:13:13,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1492 states to 1492 states and 1979 transitions. [2025-03-04 03:13:13,757 INFO L78 Accepts]: Start accepts. Automaton has 1492 states and 1979 transitions. Word has length 107 [2025-03-04 03:13:13,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 03:13:13,757 INFO L471 AbstractCegarLoop]: Abstraction has 1492 states and 1979 transitions. [2025-03-04 03:13:13,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.4375) internal successors, (103), 14 states have internal predecessors, (103), 4 states have call successors, (16), 2 states have call predecessors, (16), 6 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) [2025-03-04 03:13:13,758 INFO L276 IsEmpty]: Start isEmpty. Operand 1492 states and 1979 transitions. [2025-03-04 03:13:13,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2025-03-04 03:13:13,759 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 03:13:13,759 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-04 03:13:13,773 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-04 03:13:13,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2025-03-04 03:13:13,960 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 03:13:13,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 03:13:13,961 INFO L85 PathProgramCache]: Analyzing trace with hash 962101436, now seen corresponding path program 1 times [2025-03-04 03:13:13,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 03:13:13,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114474565] [2025-03-04 03:13:13,961 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 03:13:13,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 03:13:17,270 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 109 statements into 1 equivalence classes. [2025-03-04 03:13:17,312 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 109 of 109 statements. [2025-03-04 03:13:17,312 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 03:13:17,312 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 03:13:17,936 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-03-04 03:13:17,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 03:13:17,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114474565] [2025-03-04 03:13:17,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114474565] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 03:13:17,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 03:13:17,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 03:13:17,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427592455] [2025-03-04 03:13:17,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 03:13:17,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 03:13:17,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 03:13:17,937 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 03:13:17,937 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 03:13:17,937 INFO L87 Difference]: Start difference. First operand 1492 states and 1979 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, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-04 03:13:21,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []