./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_get_at_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 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/aws-c-common/aws_array_list_get_at_harness.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 077859a827b9835fc70ffe4bef1d8360e024e130f860bf1f8321474f6266da95 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 06:52:51,424 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 06:52:51,479 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-03-17 06:52:51,489 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 06:52:51,489 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 06:52:51,512 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 06:52:51,512 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 06:52:51,512 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 06:52:51,513 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 06:52:51,513 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 06:52:51,513 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 06:52:51,513 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 06:52:51,513 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 06:52:51,513 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 06:52:51,513 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 06:52:51,513 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 06:52:51,513 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 06:52:51,513 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 06:52:51,515 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 06:52:51,515 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 06:52:51,515 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 06:52:51,516 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 06:52:51,516 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 06:52:51,516 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 06:52:51,516 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 06:52:51,516 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 06:52:51,516 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 06:52:51,516 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 06:52:51,516 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 06:52:51,516 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 06:52:51,517 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 06:52:51,517 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 06:52:51,517 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 06:52:51,517 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 06:52:51,517 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 06:52:51,518 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 06:52:51,518 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 06:52:51,518 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 06:52:51,518 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 06:52:51,518 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 06:52:51,518 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 -> 077859a827b9835fc70ffe4bef1d8360e024e130f860bf1f8321474f6266da95 [2025-03-17 06:52:51,825 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 06:52:51,832 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 06:52:51,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 06:52:51,836 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 06:52:51,836 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 06:52:51,838 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_get_at_harness.i [2025-03-17 06:52:53,014 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eaaf9e2d8/8b7fc8ffeabf43eda80093b9773399a4/FLAGa040c4f6a [2025-03-17 06:52:53,475 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 06:52:53,476 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_get_at_harness.i [2025-03-17 06:52:53,511 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eaaf9e2d8/8b7fc8ffeabf43eda80093b9773399a4/FLAGa040c4f6a [2025-03-17 06:52:53,596 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eaaf9e2d8/8b7fc8ffeabf43eda80093b9773399a4 [2025-03-17 06:52:53,598 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 06:52:53,599 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 06:52:53,600 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 06:52:53,600 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 06:52:53,603 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 06:52:53,603 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:52:53" (1/1) ... [2025-03-17 06:52:53,604 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27aa2469 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:52:53, skipping insertion in model container [2025-03-17 06:52:53,604 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:52:53" (1/1) ... [2025-03-17 06:52:53,668 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 06:52:53,917 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/aws-c-common/aws_array_list_get_at_harness.i[4495,4508] [2025-03-17 06:52:53,931 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/aws-c-common/aws_array_list_get_at_harness.i[4555,4568] [2025-03-17 06:52:54,662 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:52:54,662 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:52:54,663 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:52:54,663 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:52:54,664 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:52:54,676 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:52:54,677 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:52:54,678 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:52:54,678 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:52:54,681 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:52:54,685 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:52:54,685 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:52:54,686 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:52:55,099 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:52:55,104 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:52:55,159 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:52:55,160 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:52:55,164 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 06:52:55,189 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 06:52:55,201 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/aws-c-common/aws_array_list_get_at_harness.i[4495,4508] [2025-03-17 06:52:55,201 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/aws-c-common/aws_array_list_get_at_harness.i[4555,4568] [2025-03-17 06:52:55,256 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:52:55,258 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:52:55,258 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:52:55,258 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:52:55,259 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:52:55,265 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:52:55,269 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:52:55,270 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:52:55,270 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:52:55,271 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:52:55,271 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:52:55,271 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:52:55,272 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:52:55,334 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:52:55,338 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:52:55,344 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7769-7780] [2025-03-17 06:52:55,362 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:52:55,363 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:52:55,363 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 06:52:55,528 INFO L204 MainTranslator]: Completed translation [2025-03-17 06:52:55,528 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:52:55 WrapperNode [2025-03-17 06:52:55,529 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 06:52:55,529 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 06:52:55,529 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 06:52:55,530 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 06:52:55,534 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:52:55" (1/1) ... [2025-03-17 06:52:55,574 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:52:55" (1/1) ... [2025-03-17 06:52:55,612 INFO L138 Inliner]: procedures = 680, calls = 1679, calls flagged for inlining = 52, calls inlined = 8, statements flattened = 656 [2025-03-17 06:52:55,613 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 06:52:55,613 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 06:52:55,613 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 06:52:55,613 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 06:52:55,623 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:52:55" (1/1) ... [2025-03-17 06:52:55,623 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:52:55" (1/1) ... [2025-03-17 06:52:55,659 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:52:55" (1/1) ... [2025-03-17 06:52:55,715 INFO L175 MemorySlicer]: Split 313 memory accesses to 6 slices as follows [238, 2, 55, 6, 9, 3]. 76 percent of accesses are in the largest equivalence class. The 24 initializations are split as follows [6, 2, 10, 0, 5, 1]. The 239 writes are split as follows [232, 0, 3, 2, 1, 1]. [2025-03-17 06:52:55,715 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:52:55" (1/1) ... [2025-03-17 06:52:55,715 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:52:55" (1/1) ... [2025-03-17 06:52:55,734 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:52:55" (1/1) ... [2025-03-17 06:52:55,736 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:52:55" (1/1) ... [2025-03-17 06:52:55,740 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:52:55" (1/1) ... [2025-03-17 06:52:55,742 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:52:55" (1/1) ... [2025-03-17 06:52:55,748 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 06:52:55,749 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 06:52:55,749 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 06:52:55,749 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 06:52:55,750 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:52:55" (1/1) ... [2025-03-17 06:52:55,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 06:52:55,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:52:55,781 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) [2025-03-17 06:52:55,787 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 [2025-03-17 06:52:55,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 06:52:55,804 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2025-03-17 06:52:55,804 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2025-03-17 06:52:55,804 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2025-03-17 06:52:55,804 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2025-03-17 06:52:55,804 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2025-03-17 06:52:55,804 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2025-03-17 06:52:55,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2025-03-17 06:52:55,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2025-03-17 06:52:55,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2025-03-17 06:52:55,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2025-03-17 06:52:55,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2025-03-17 06:52:55,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2025-03-17 06:52:55,805 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 06:52:55,805 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 06:52:55,805 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-17 06:52:55,805 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-17 06:52:55,805 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-17 06:52:55,805 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-03-17 06:52:55,805 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2025-03-17 06:52:55,805 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2025-03-17 06:52:55,805 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-17 06:52:55,805 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-17 06:52:55,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 06:52:55,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 06:52:55,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-17 06:52:55,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-17 06:52:55,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-17 06:52:55,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-03-17 06:52:55,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2025-03-17 06:52:55,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2025-03-17 06:52:55,805 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2025-03-17 06:52:55,805 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2025-03-17 06:52:55,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 06:52:55,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 06:52:55,805 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2025-03-17 06:52:55,805 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2025-03-17 06:52:55,805 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2025-03-17 06:52:55,805 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2025-03-17 06:52:55,805 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2025-03-17 06:52:55,805 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2025-03-17 06:52:55,805 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2025-03-17 06:52:55,805 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2025-03-17 06:52:55,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2025-03-17 06:52:55,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2025-03-17 06:52:55,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2025-03-17 06:52:55,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2025-03-17 06:52:55,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2025-03-17 06:52:55,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2025-03-17 06:52:55,806 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2025-03-17 06:52:55,806 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2025-03-17 06:52:55,806 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2025-03-17 06:52:55,806 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2025-03-17 06:52:55,806 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-17 06:52:55,806 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-17 06:52:55,806 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2025-03-17 06:52:55,806 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2025-03-17 06:52:55,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-17 06:52:55,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-17 06:52:55,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-17 06:52:55,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-17 06:52:55,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-03-17 06:52:55,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-03-17 06:52:55,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2025-03-17 06:52:55,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-03-17 06:52:55,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-03-17 06:52:55,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-03-17 06:52:55,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-03-17 06:52:55,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2025-03-17 06:52:55,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2025-03-17 06:52:55,806 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2025-03-17 06:52:55,806 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2025-03-17 06:52:55,809 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2025-03-17 06:52:55,809 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2025-03-17 06:52:55,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 06:52:55,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 06:52:55,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-17 06:52:55,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-17 06:52:55,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-17 06:52:55,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-03-17 06:52:55,809 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2025-03-17 06:52:55,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2025-03-17 06:52:55,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 06:52:55,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 06:52:55,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-17 06:52:55,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-17 06:52:55,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-17 06:52:55,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-17 06:52:56,043 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 06:52:56,045 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 06:52:56,086 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2782: havoc #t~malloc77.base, #t~malloc77.offset; [2025-03-17 06:52:56,103 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L263: havoc #t~nondet6; [2025-03-17 06:52:56,127 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2588: havoc #t~ret57#1; [2025-03-17 06:52:56,166 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2796: havoc #t~ret81;havoc #t~ite83.base, #t~ite83.offset;havoc #t~ret82.base, #t~ret82.offset; [2025-03-17 06:52:56,258 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3268: call ULTIMATE.dealloc(~#required_size~0.base, ~#required_size~0.offset);havoc ~#required_size~0.base, ~#required_size~0.offset; [2025-03-17 06:52:56,262 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L261: havoc #t~nondet4; [2025-03-17 06:52:56,283 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L7390: havoc #t~ret683.base, #t~ret683.offset; [2025-03-17 06:53:01,597 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3512: havoc aws_array_list_get_at_#t~ret279#1; [2025-03-17 06:53:01,673 INFO L? ?]: Removed 125 outVars from TransFormulas that were not future-live. [2025-03-17 06:53:01,673 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 06:53:01,683 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 06:53:01,684 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 06:53:01,684 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:53:01 BoogieIcfgContainer [2025-03-17 06:53:01,684 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 06:53:01,687 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 06:53:01,687 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 06:53:01,691 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 06:53:01,691 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 06:52:53" (1/3) ... [2025-03-17 06:53:01,692 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f9bb81a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:53:01, skipping insertion in model container [2025-03-17 06:53:01,693 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:52:55" (2/3) ... [2025-03-17 06:53:01,693 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f9bb81a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:53:01, skipping insertion in model container [2025-03-17 06:53:01,693 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:53:01" (3/3) ... [2025-03-17 06:53:01,694 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_array_list_get_at_harness.i [2025-03-17 06:53:01,707 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 06:53:01,709 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_array_list_get_at_harness.i that has 18 procedures, 180 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-17 06:53:01,756 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 06:53:01,766 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;@3698db41, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 06:53:01,766 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-17 06:53:01,770 INFO L276 IsEmpty]: Start isEmpty. Operand has 180 states, 106 states have (on average 1.2075471698113207) internal successors, (128), 107 states have internal predecessors, (128), 55 states have call successors, (55), 17 states have call predecessors, (55), 17 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2025-03-17 06:53:01,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2025-03-17 06:53:01,781 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:53:01,782 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 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] [2025-03-17 06:53:01,782 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:53:01,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:53:01,787 INFO L85 PathProgramCache]: Analyzing trace with hash -308024444, now seen corresponding path program 1 times [2025-03-17 06:53:01,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:53:01,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761290331] [2025-03-17 06:53:01,795 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:53:01,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:53:06,615 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 133 statements into 1 equivalence classes. [2025-03-17 06:53:07,023 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 133 of 133 statements. [2025-03-17 06:53:07,024 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:53:07,024 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:53:07,551 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2025-03-17 06:53:07,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:53:07,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761290331] [2025-03-17 06:53:07,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761290331] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:53:07,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472780064] [2025-03-17 06:53:07,554 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:53:07,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:53:07,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:53:07,556 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) [2025-03-17 06:53:07,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 06:53:11,921 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 133 statements into 1 equivalence classes. [2025-03-17 06:53:12,441 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 133 of 133 statements. [2025-03-17 06:53:12,441 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:53:12,441 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:53:12,463 INFO L256 TraceCheckSpWp]: Trace formula consists of 4280 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-17 06:53:12,470 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:53:12,489 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2025-03-17 06:53:12,489 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 06:53:12,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472780064] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:53:12,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 06:53:12,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-17 06:53:12,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046054823] [2025-03-17 06:53:12,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:53:12,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 06:53:12,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:53:12,515 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 06:53:12,515 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 06:53:12,518 INFO L87 Difference]: Start difference. First operand has 180 states, 106 states have (on average 1.2075471698113207) internal successors, (128), 107 states have internal predecessors, (128), 55 states have call successors, (55), 17 states have call predecessors, (55), 17 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2025-03-17 06:53:12,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:53:12,556 INFO L93 Difference]: Finished difference Result 354 states and 504 transitions. [2025-03-17 06:53:12,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 06:53:12,559 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 133 [2025-03-17 06:53:12,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:53:12,565 INFO L225 Difference]: With dead ends: 354 [2025-03-17 06:53:12,566 INFO L226 Difference]: Without dead ends: 173 [2025-03-17 06:53:12,570 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 06:53:12,572 INFO L435 NwaCegarLoop]: 236 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 06:53:12,573 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 06:53:12,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2025-03-17 06:53:12,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2025-03-17 06:53:12,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 101 states have (on average 1.1683168316831682) internal successors, (118), 102 states have internal predecessors, (118), 55 states have call successors, (55), 17 states have call predecessors, (55), 16 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2025-03-17 06:53:12,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 226 transitions. [2025-03-17 06:53:12,612 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 226 transitions. Word has length 133 [2025-03-17 06:53:12,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:53:12,613 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 226 transitions. [2025-03-17 06:53:12,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2025-03-17 06:53:12,613 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 226 transitions. [2025-03-17 06:53:12,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2025-03-17 06:53:12,617 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:53:12,618 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 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] [2025-03-17 06:53:12,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-17 06:53:12,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-17 06:53:12,822 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:53:12,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:53:12,822 INFO L85 PathProgramCache]: Analyzing trace with hash 479517186, now seen corresponding path program 1 times [2025-03-17 06:53:12,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:53:12,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018769499] [2025-03-17 06:53:12,823 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:53:12,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:53:16,874 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 133 statements into 1 equivalence classes. [2025-03-17 06:53:17,026 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 133 of 133 statements. [2025-03-17 06:53:17,026 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:53:17,026 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:53:18,127 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2025-03-17 06:53:18,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:53:18,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018769499] [2025-03-17 06:53:18,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018769499] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:53:18,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142704100] [2025-03-17 06:53:18,127 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:53:18,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:53:18,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:53:18,132 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) [2025-03-17 06:53:18,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 06:53:22,608 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 133 statements into 1 equivalence classes. [2025-03-17 06:53:23,106 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 133 of 133 statements. [2025-03-17 06:53:23,107 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:53:23,107 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:53:23,126 INFO L256 TraceCheckSpWp]: Trace formula consists of 4280 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 06:53:23,136 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:53:23,672 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2025-03-17 06:53:23,672 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 06:53:23,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142704100] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:53:23,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 06:53:23,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2025-03-17 06:53:23,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971605361] [2025-03-17 06:53:23,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:53:23,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 06:53:23,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:53:23,673 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 06:53:23,673 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-03-17 06:53:23,674 INFO L87 Difference]: Start difference. First operand 173 states and 226 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2025-03-17 06:53:24,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:53:24,528 INFO L93 Difference]: Finished difference Result 320 states and 424 transitions. [2025-03-17 06:53:24,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 06:53:24,529 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 133 [2025-03-17 06:53:24,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:53:24,532 INFO L225 Difference]: With dead ends: 320 [2025-03-17 06:53:24,532 INFO L226 Difference]: Without dead ends: 175 [2025-03-17 06:53:24,533 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-03-17 06:53:24,534 INFO L435 NwaCegarLoop]: 207 mSDtfsCounter, 47 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-17 06:53:24,534 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 741 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-17 06:53:24,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2025-03-17 06:53:24,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2025-03-17 06:53:24,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 102 states have (on average 1.1666666666666667) internal successors, (119), 104 states have internal predecessors, (119), 55 states have call successors, (55), 17 states have call predecessors, (55), 17 states have return successors, (58), 53 states have call predecessors, (58), 53 states have call successors, (58) [2025-03-17 06:53:24,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 232 transitions. [2025-03-17 06:53:24,556 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 232 transitions. Word has length 133 [2025-03-17 06:53:24,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:53:24,557 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 232 transitions. [2025-03-17 06:53:24,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2025-03-17 06:53:24,557 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 232 transitions. [2025-03-17 06:53:24,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2025-03-17 06:53:24,563 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:53:24,563 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:53:24,583 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-17 06:53:24,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2025-03-17 06:53:24,764 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:53:24,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:53:24,765 INFO L85 PathProgramCache]: Analyzing trace with hash -2020605520, now seen corresponding path program 1 times [2025-03-17 06:53:24,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:53:24,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062623300] [2025-03-17 06:53:24,765 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:53:24,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:53:28,276 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 163 statements into 1 equivalence classes. [2025-03-17 06:53:28,478 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 163 of 163 statements. [2025-03-17 06:53:28,478 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:53:28,478 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:53:30,128 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2025-03-17 06:53:30,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:53:30,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062623300] [2025-03-17 06:53:30,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062623300] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:53:30,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509683809] [2025-03-17 06:53:30,129 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:53:30,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:53:30,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:53:30,131 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 06:53:30,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 06:53:34,156 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 163 statements into 1 equivalence classes. [2025-03-17 06:53:34,607 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 163 of 163 statements. [2025-03-17 06:53:34,607 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:53:34,607 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:53:34,640 INFO L256 TraceCheckSpWp]: Trace formula consists of 4534 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-17 06:53:34,652 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:53:35,721 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2025-03-17 06:53:35,721 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 06:53:35,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509683809] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:53:35,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 06:53:35,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2025-03-17 06:53:35,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330546651] [2025-03-17 06:53:35,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:53:35,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 06:53:35,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:53:35,723 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 06:53:35,723 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-03-17 06:53:35,724 INFO L87 Difference]: Start difference. First operand 175 states and 232 transitions. Second operand has 6 states, 5 states have (on average 13.2) internal successors, (66), 6 states have internal predecessors, (66), 4 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) [2025-03-17 06:53:37,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:53:37,015 INFO L93 Difference]: Finished difference Result 280 states and 371 transitions. [2025-03-17 06:53:37,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 06:53:37,015 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 6 states have internal predecessors, (66), 4 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) Word has length 163 [2025-03-17 06:53:37,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:53:37,018 INFO L225 Difference]: With dead ends: 280 [2025-03-17 06:53:37,018 INFO L226 Difference]: Without dead ends: 175 [2025-03-17 06:53:37,019 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2025-03-17 06:53:37,020 INFO L435 NwaCegarLoop]: 208 mSDtfsCounter, 48 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 933 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-17 06:53:37,020 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 933 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-17 06:53:37,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2025-03-17 06:53:37,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2025-03-17 06:53:37,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 102 states have (on average 1.1666666666666667) internal successors, (119), 104 states have internal predecessors, (119), 55 states have call successors, (55), 17 states have call predecessors, (55), 17 states have return successors, (55), 53 states have call predecessors, (55), 53 states have call successors, (55) [2025-03-17 06:53:37,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 229 transitions. [2025-03-17 06:53:37,034 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 229 transitions. Word has length 163 [2025-03-17 06:53:37,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:53:37,034 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 229 transitions. [2025-03-17 06:53:37,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 6 states have internal predecessors, (66), 4 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) [2025-03-17 06:53:37,034 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 229 transitions. [2025-03-17 06:53:37,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2025-03-17 06:53:37,036 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:53:37,037 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2025-03-17 06:53:37,059 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-17 06:53:37,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:53:37,237 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:53:37,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:53:37,238 INFO L85 PathProgramCache]: Analyzing trace with hash -703715914, now seen corresponding path program 2 times [2025-03-17 06:53:37,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:53:37,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030090440] [2025-03-17 06:53:37,238 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 06:53:37,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:53:41,004 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 178 statements into 2 equivalence classes. [2025-03-17 06:53:41,495 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 178 of 178 statements. [2025-03-17 06:53:41,495 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 06:53:41,496 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:53:43,378 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2025-03-17 06:53:43,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:53:43,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030090440] [2025-03-17 06:53:43,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030090440] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:53:43,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:53:43,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-17 06:53:43,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576138141] [2025-03-17 06:53:43,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:53:43,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 06:53:43,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:53:43,380 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 06:53:43,380 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-17 06:53:43,380 INFO L87 Difference]: Start difference. First operand 175 states and 229 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 5 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (24), 5 states have call predecessors, (24), 4 states have call successors, (24) [2025-03-17 06:53:45,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:53:45,154 INFO L93 Difference]: Finished difference Result 269 states and 348 transitions. [2025-03-17 06:53:45,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 06:53:45,156 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 5 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (24), 5 states have call predecessors, (24), 4 states have call successors, (24) Word has length 178 [2025-03-17 06:53:45,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:53:45,159 INFO L225 Difference]: With dead ends: 269 [2025-03-17 06:53:45,163 INFO L226 Difference]: Without dead ends: 173 [2025-03-17 06:53:45,164 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-03-17 06:53:45,165 INFO L435 NwaCegarLoop]: 206 mSDtfsCounter, 55 mSDsluCounter, 1112 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 1318 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-03-17 06:53:45,165 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 1318 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-03-17 06:53:45,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2025-03-17 06:53:45,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2025-03-17 06:53:45,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 101 states have (on average 1.1584158415841583) internal successors, (117), 102 states have internal predecessors, (117), 55 states have call successors, (55), 17 states have call predecessors, (55), 16 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2025-03-17 06:53:45,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 225 transitions. [2025-03-17 06:53:45,184 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 225 transitions. Word has length 178 [2025-03-17 06:53:45,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:53:45,184 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 225 transitions. [2025-03-17 06:53:45,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 5 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (24), 5 states have call predecessors, (24), 4 states have call successors, (24) [2025-03-17 06:53:45,185 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 225 transitions. [2025-03-17 06:53:45,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2025-03-17 06:53:45,188 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:53:45,188 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2025-03-17 06:53:45,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 06:53:45,188 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:53:45,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:53:45,189 INFO L85 PathProgramCache]: Analyzing trace with hash -57773944, now seen corresponding path program 1 times [2025-03-17 06:53:45,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:53:45,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608932954] [2025-03-17 06:53:45,189 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:53:45,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:53:48,857 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 208 statements into 1 equivalence classes. [2025-03-17 06:53:49,029 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 208 of 208 statements. [2025-03-17 06:53:49,029 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:53:49,029 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:53:51,697 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 373 trivial. 0 not checked. [2025-03-17 06:53:51,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:53:51,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608932954] [2025-03-17 06:53:51,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608932954] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:53:51,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:53:51,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-17 06:53:51,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965399160] [2025-03-17 06:53:51,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:53:51,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 06:53:51,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:53:51,699 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 06:53:51,699 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-17 06:53:51,700 INFO L87 Difference]: Start difference. First operand 173 states and 225 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (24), 4 states have call predecessors, (24), 3 states have call successors, (24) [2025-03-17 06:53:55,764 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-17 06:54:00,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.40s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-17 06:54:04,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.40s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-17 06:54:05,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:54:05,667 INFO L93 Difference]: Finished difference Result 299 states and 392 transitions. [2025-03-17 06:54:05,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 06:54:05,668 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (24), 4 states have call predecessors, (24), 3 states have call successors, (24) Word has length 208 [2025-03-17 06:54:05,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:54:05,670 INFO L225 Difference]: With dead ends: 299 [2025-03-17 06:54:05,670 INFO L226 Difference]: Without dead ends: 193 [2025-03-17 06:54:05,671 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-17 06:54:05,671 INFO L435 NwaCegarLoop]: 220 mSDtfsCounter, 6 mSDsluCounter, 1095 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1315 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.8s IncrementalHoareTripleChecker+Time [2025-03-17 06:54:05,672 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1315 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 3 Unknown, 0 Unchecked, 13.8s Time] [2025-03-17 06:54:05,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2025-03-17 06:54:05,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 189. [2025-03-17 06:54:05,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 111 states have (on average 1.1531531531531531) internal successors, (128), 112 states have internal predecessors, (128), 60 states have call successors, (60), 17 states have call predecessors, (60), 17 states have return successors, (59), 59 states have call predecessors, (59), 58 states have call successors, (59) [2025-03-17 06:54:05,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 247 transitions. [2025-03-17 06:54:05,692 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 247 transitions. Word has length 208 [2025-03-17 06:54:05,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:54:05,692 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 247 transitions. [2025-03-17 06:54:05,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (24), 4 states have call predecessors, (24), 3 states have call successors, (24) [2025-03-17 06:54:05,693 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 247 transitions. [2025-03-17 06:54:05,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2025-03-17 06:54:05,695 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:54:05,695 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2025-03-17 06:54:05,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 06:54:05,695 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:54:05,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:54:05,696 INFO L85 PathProgramCache]: Analyzing trace with hash 457746505, now seen corresponding path program 1 times [2025-03-17 06:54:05,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:54:05,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594093346] [2025-03-17 06:54:05,696 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:54:05,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:54:09,103 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 208 statements into 1 equivalence classes. [2025-03-17 06:54:09,213 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 208 of 208 statements. [2025-03-17 06:54:09,213 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:54:09,213 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:54:11,714 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 373 trivial. 0 not checked. [2025-03-17 06:54:11,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:54:11,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594093346] [2025-03-17 06:54:11,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594093346] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:54:11,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:54:11,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-17 06:54:11,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913943985] [2025-03-17 06:54:11,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:54:11,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 06:54:11,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:54:11,716 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 06:54:11,716 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-17 06:54:11,716 INFO L87 Difference]: Start difference. First operand 189 states and 247 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 7 states have internal predecessors, (57), 4 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (24), 5 states have call predecessors, (24), 4 states have call successors, (24) [2025-03-17 06:54:15,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-17 06:54:20,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers []