./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_clear_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_array_list_clear_harness.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 602c22a5759f33fe3c7a18e3ef1531ea38defb370e298f7d0c16de4a5734f1a7 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 01:25:45,944 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 01:25:46,000 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-02-08 01:25:46,005 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 01:25:46,005 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 01:25:46,024 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 01:25:46,025 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 01:25:46,025 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 01:25:46,025 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 01:25:46,026 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 01:25:46,026 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 01:25:46,026 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 01:25:46,027 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 01:25:46,027 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 01:25:46,027 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 01:25:46,027 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 01:25:46,027 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 01:25:46,027 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 01:25:46,027 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 01:25:46,027 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 01:25:46,027 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 01:25:46,028 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 01:25:46,028 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 01:25:46,028 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 01:25:46,028 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 01:25:46,028 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 01:25:46,028 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 01:25:46,028 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 01:25:46,028 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 01:25:46,029 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:25:46,029 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 01:25:46,029 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 01:25:46,029 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 01:25:46,029 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 01:25:46,029 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 01:25:46,029 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 01:25:46,029 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 01:25:46,029 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 01:25:46,029 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 01:25:46,029 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 01:25:46,029 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-jdk21/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 -> 602c22a5759f33fe3c7a18e3ef1531ea38defb370e298f7d0c16de4a5734f1a7 [2025-02-08 01:25:46,240 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 01:25:46,246 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 01:25:46,248 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 01:25:46,249 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 01:25:46,249 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 01:25:46,250 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_clear_harness.i [2025-02-08 01:25:47,470 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b5282eaad/c7a7a35870b34a8aa6d0c923d61492e5/FLAG501741abc [2025-02-08 01:25:47,966 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 01:25:47,967 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_clear_harness.i [2025-02-08 01:25:47,997 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b5282eaad/c7a7a35870b34a8aa6d0c923d61492e5/FLAG501741abc [2025-02-08 01:25:48,063 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b5282eaad/c7a7a35870b34a8aa6d0c923d61492e5 [2025-02-08 01:25:48,066 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 01:25:48,067 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 01:25:48,068 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 01:25:48,069 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 01:25:48,072 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 01:25:48,072 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:25:48" (1/1) ... [2025-02-08 01:25:48,073 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56857393 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:25:48, skipping insertion in model container [2025-02-08 01:25:48,073 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:25:48" (1/1) ... [2025-02-08 01:25:48,142 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 01:25:48,318 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_clear_harness.i[4494,4507] [2025-02-08 01:25:48,323 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_clear_harness.i[4554,4567] [2025-02-08 01:25:48,767 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:25:48,767 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:25:48,767 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:25:48,768 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:25:48,768 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:25:48,777 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:25:48,777 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:25:48,782 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:25:48,783 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:25:48,784 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:25:48,784 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:25:48,786 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:25:48,788 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:25:49,052 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:25:49,056 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:25:49,091 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:25:49,116 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 01:25:49,125 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_clear_harness.i[4494,4507] [2025-02-08 01:25:49,125 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_clear_harness.i[4554,4567] [2025-02-08 01:25:49,191 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:25:49,191 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:25:49,191 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:25:49,192 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:25:49,192 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:25:49,200 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:25:49,200 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:25:49,201 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:25:49,202 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:25:49,203 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:25:49,203 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:25:49,203 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:25:49,203 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:25:49,261 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:25:49,265 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:25:49,269 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7529-7540] [2025-02-08 01:25:49,288 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:25:49,499 INFO L204 MainTranslator]: Completed translation [2025-02-08 01:25:49,499 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:25:49 WrapperNode [2025-02-08 01:25:49,499 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 01:25:49,500 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 01:25:49,500 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 01:25:49,500 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 01:25:49,505 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:25:49" (1/1) ... [2025-02-08 01:25:49,548 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:25:49" (1/1) ... [2025-02-08 01:25:49,594 INFO L138 Inliner]: procedures = 679, calls = 1574, calls flagged for inlining = 46, calls inlined = 6, statements flattened = 584 [2025-02-08 01:25:49,594 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 01:25:49,595 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 01:25:49,595 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 01:25:49,595 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 01:25:49,601 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:25:49" (1/1) ... [2025-02-08 01:25:49,601 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:25:49" (1/1) ... [2025-02-08 01:25:49,609 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:25:49" (1/1) ... [2025-02-08 01:25:49,666 INFO L175 MemorySlicer]: Split 291 memory accesses to 6 slices as follows [2, 238, 3, 9, 5, 34]. 82 percent of accesses are in the largest equivalence class. The 24 initializations are split as follows [2, 6, 1, 5, 5, 5]. The 237 writes are split as follows [0, 232, 1, 0, 0, 4]. [2025-02-08 01:25:49,670 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:25:49" (1/1) ... [2025-02-08 01:25:49,671 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:25:49" (1/1) ... [2025-02-08 01:25:49,698 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:25:49" (1/1) ... [2025-02-08 01:25:49,702 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:25:49" (1/1) ... [2025-02-08 01:25:49,710 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:25:49" (1/1) ... [2025-02-08 01:25:49,713 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:25:49" (1/1) ... [2025-02-08 01:25:49,725 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 01:25:49,725 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 01:25:49,725 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 01:25:49,726 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 01:25:49,726 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:25:49" (1/1) ... [2025-02-08 01:25:49,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:25:49,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:25:49,750 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 01:25:49,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 01:25:49,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 01:25:49,768 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2025-02-08 01:25:49,768 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2025-02-08 01:25:49,768 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2025-02-08 01:25:49,768 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2025-02-08 01:25:49,768 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2025-02-08 01:25:49,768 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2025-02-08 01:25:49,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2025-02-08 01:25:49,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2025-02-08 01:25:49,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2025-02-08 01:25:49,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2025-02-08 01:25:49,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2025-02-08 01:25:49,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2025-02-08 01:25:49,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 01:25:49,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 01:25:49,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-08 01:25:49,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-02-08 01:25:49,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-02-08 01:25:49,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-02-08 01:25:49,770 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2025-02-08 01:25:49,770 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2025-02-08 01:25:49,770 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-08 01:25:49,770 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-08 01:25:49,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 01:25:49,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 01:25:49,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-08 01:25:49,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-08 01:25:49,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-02-08 01:25:49,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-02-08 01:25:49,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2025-02-08 01:25:49,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2025-02-08 01:25:49,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 01:25:49,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 01:25:49,772 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2025-02-08 01:25:49,772 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2025-02-08 01:25:49,772 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2025-02-08 01:25:49,772 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2025-02-08 01:25:49,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2025-02-08 01:25:49,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2025-02-08 01:25:49,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2025-02-08 01:25:49,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2025-02-08 01:25:49,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2025-02-08 01:25:49,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2025-02-08 01:25:49,773 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-08 01:25:49,773 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-08 01:25:49,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-08 01:25:49,773 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_clear [2025-02-08 01:25:49,773 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_clear [2025-02-08 01:25:49,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-08 01:25:49,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-08 01:25:49,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-02-08 01:25:49,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-02-08 01:25:49,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-02-08 01:25:49,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2025-02-08 01:25:49,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-02-08 01:25:49,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-02-08 01:25:49,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-02-08 01:25:49,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-02-08 01:25:49,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2025-02-08 01:25:49,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2025-02-08 01:25:49,773 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2025-02-08 01:25:49,774 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2025-02-08 01:25:49,774 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2025-02-08 01:25:49,774 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2025-02-08 01:25:49,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 01:25:49,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 01:25:49,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-08 01:25:49,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-02-08 01:25:49,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-02-08 01:25:49,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-02-08 01:25:49,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 01:25:49,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 01:25:49,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-08 01:25:49,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-08 01:25:49,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-02-08 01:25:49,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-02-08 01:25:49,997 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 01:25:49,999 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 01:25:50,043 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L2782: havoc #t~malloc77.base, #t~malloc77.offset; [2025-02-08 01:25:50,075 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L2588: havoc #t~ret57#1; [2025-02-08 01:25:50,119 INFO L1324 $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; [2025-02-08 01:25:50,122 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L261: havoc #t~nondet4; [2025-02-08 01:25:55,407 INFO L? ?]: Removed 58 outVars from TransFormulas that were not future-live. [2025-02-08 01:25:55,407 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 01:25:55,416 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 01:25:55,418 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 01:25:55,418 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:25:55 BoogieIcfgContainer [2025-02-08 01:25:55,418 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 01:25:55,420 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 01:25:55,420 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 01:25:55,423 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 01:25:55,424 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 01:25:48" (1/3) ... [2025-02-08 01:25:55,425 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d78b708 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:25:55, skipping insertion in model container [2025-02-08 01:25:55,425 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:25:49" (2/3) ... [2025-02-08 01:25:55,425 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d78b708 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:25:55, skipping insertion in model container [2025-02-08 01:25:55,425 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:25:55" (3/3) ... [2025-02-08 01:25:55,426 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_array_list_clear_harness.i [2025-02-08 01:25:55,437 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 01:25:55,462 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_array_list_clear_harness.i that has 12 procedures, 97 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-02-08 01:25:55,511 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 01:25:55,521 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;@32ad2e77, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 01:25:55,522 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-08 01:25:55,525 INFO L276 IsEmpty]: Start isEmpty. Operand has 97 states, 58 states have (on average 1.206896551724138) internal successors, (70), 60 states have internal predecessors, (70), 25 states have call successors, (25), 11 states have call predecessors, (25), 11 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2025-02-08 01:25:55,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2025-02-08 01:25:55,532 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 01:25:55,533 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:25:55,533 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 01:25:55,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:25:55,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1746156966, now seen corresponding path program 1 times [2025-02-08 01:25:55,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:25:55,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106924748] [2025-02-08 01:25:55,546 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:25:55,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:25:59,990 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes. [2025-02-08 01:26:00,285 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements. [2025-02-08 01:26:00,286 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:26:00,286 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:26:00,681 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-02-08 01:26:00,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:26:00,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106924748] [2025-02-08 01:26:00,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106924748] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:26:00,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652771568] [2025-02-08 01:26:00,684 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:26:00,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:26:00,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:26:00,687 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:26:00,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-08 01:26:05,056 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes. [2025-02-08 01:26:05,446 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements. [2025-02-08 01:26:05,446 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:26:05,447 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:26:05,464 INFO L256 TraceCheckSpWp]: Trace formula consists of 4029 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-02-08 01:26:05,470 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:26:05,478 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-02-08 01:26:05,478 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 01:26:05,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652771568] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:26:05,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 01:26:05,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-02-08 01:26:05,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912654281] [2025-02-08 01:26:05,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:26:05,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-08 01:26:05,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:26:05,496 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-08 01:26:05,496 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-08 01:26:05,498 INFO L87 Difference]: Start difference. First operand has 97 states, 58 states have (on average 1.206896551724138) internal successors, (70), 60 states have internal predecessors, (70), 25 states have call successors, (25), 11 states have call predecessors, (25), 11 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-02-08 01:26:05,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 01:26:05,515 INFO L93 Difference]: Finished difference Result 188 states and 247 transitions. [2025-02-08 01:26:05,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-08 01:26:05,523 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 59 [2025-02-08 01:26:05,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 01:26:05,528 INFO L225 Difference]: With dead ends: 188 [2025-02-08 01:26:05,528 INFO L226 Difference]: Without dead ends: 88 [2025-02-08 01:26:05,530 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-08 01:26:05,532 INFO L435 NwaCegarLoop]: 118 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, 118 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 [2025-02-08 01:26:05,533 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 01:26:05,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2025-02-08 01:26:05,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2025-02-08 01:26:05,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 53 states have (on average 1.169811320754717) internal successors, (62), 54 states have internal predecessors, (62), 24 states have call successors, (24), 10 states have call predecessors, (24), 10 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2025-02-08 01:26:05,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 109 transitions. [2025-02-08 01:26:05,563 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 109 transitions. Word has length 59 [2025-02-08 01:26:05,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 01:26:05,563 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 109 transitions. [2025-02-08 01:26:05,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-02-08 01:26:05,564 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 109 transitions. [2025-02-08 01:26:05,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2025-02-08 01:26:05,565 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 01:26:05,565 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:26:05,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-08 01:26:05,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-02-08 01:26:05,766 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 01:26:05,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:26:05,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1946688452, now seen corresponding path program 1 times [2025-02-08 01:26:05,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:26:05,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913446917] [2025-02-08 01:26:05,767 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:26:05,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:26:09,904 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes. [2025-02-08 01:26:10,014 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements. [2025-02-08 01:26:10,015 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:26:10,015 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:26:11,056 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-02-08 01:26:11,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:26:11,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913446917] [2025-02-08 01:26:11,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913446917] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:26:11,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353056678] [2025-02-08 01:26:11,056 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:26:11,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:26:11,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:26:11,059 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:26:11,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-08 01:26:15,503 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes. [2025-02-08 01:26:15,913 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements. [2025-02-08 01:26:15,914 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:26:15,914 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:26:15,931 INFO L256 TraceCheckSpWp]: Trace formula consists of 4029 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 01:26:15,936 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:26:16,544 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 01:26:16,545 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 01:26:16,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353056678] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:26:16,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 01:26:16,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2025-02-08 01:26:16,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881052513] [2025-02-08 01:26:16,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:26:16,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:26:16,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:26:16,547 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:26:16,551 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-02-08 01:26:16,552 INFO L87 Difference]: Start difference. First operand 88 states and 109 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-02-08 01:26:17,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 01:26:17,190 INFO L93 Difference]: Finished difference Result 145 states and 182 transitions. [2025-02-08 01:26:17,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:26:17,190 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 59 [2025-02-08 01:26:17,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 01:26:17,192 INFO L225 Difference]: With dead ends: 145 [2025-02-08 01:26:17,192 INFO L226 Difference]: Without dead ends: 90 [2025-02-08 01:26:17,193 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-02-08 01:26:17,193 INFO L435 NwaCegarLoop]: 93 mSDtfsCounter, 23 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-08 01:26:17,194 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 326 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-08 01:26:17,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2025-02-08 01:26:17,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2025-02-08 01:26:17,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 54 states have (on average 1.1666666666666667) internal successors, (63), 56 states have internal predecessors, (63), 24 states have call successors, (24), 10 states have call predecessors, (24), 11 states have return successors, (25), 23 states have call predecessors, (25), 23 states have call successors, (25) [2025-02-08 01:26:17,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 112 transitions. [2025-02-08 01:26:17,207 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 112 transitions. Word has length 59 [2025-02-08 01:26:17,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 01:26:17,207 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 112 transitions. [2025-02-08 01:26:17,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-02-08 01:26:17,208 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 112 transitions. [2025-02-08 01:26:17,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2025-02-08 01:26:17,209 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 01:26:17,209 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 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] [2025-02-08 01:26:17,224 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-08 01:26:17,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:26:17,410 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 01:26:17,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:26:17,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1877975884, now seen corresponding path program 1 times [2025-02-08 01:26:17,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:26:17,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130947334] [2025-02-08 01:26:17,411 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:26:17,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:26:21,106 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 73 statements into 1 equivalence classes. [2025-02-08 01:26:21,265 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 73 of 73 statements. [2025-02-08 01:26:21,266 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:26:21,266 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:26:22,706 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-02-08 01:26:22,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:26:22,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130947334] [2025-02-08 01:26:22,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130947334] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:26:22,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102062104] [2025-02-08 01:26:22,709 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:26:22,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:26:22,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:26:22,711 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:26:22,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-08 01:26:27,102 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 73 statements into 1 equivalence classes. [2025-02-08 01:26:27,501 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 73 of 73 statements. [2025-02-08 01:26:27,502 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:26:27,502 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:26:27,519 INFO L256 TraceCheckSpWp]: Trace formula consists of 4156 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-08 01:26:27,525 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:26:28,705 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-02-08 01:26:28,706 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 01:26:28,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102062104] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:26:28,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 01:26:28,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2025-02-08 01:26:28,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291554735] [2025-02-08 01:26:28,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:26:28,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 01:26:28,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:26:28,710 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 01:26:28,710 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2025-02-08 01:26:28,710 INFO L87 Difference]: Start difference. First operand 90 states and 112 transitions. Second operand has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2025-02-08 01:26:29,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 01:26:29,780 INFO L93 Difference]: Finished difference Result 142 states and 175 transitions. [2025-02-08 01:26:29,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 01:26:29,781 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 73 [2025-02-08 01:26:29,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 01:26:29,783 INFO L225 Difference]: With dead ends: 142 [2025-02-08 01:26:29,783 INFO L226 Difference]: Without dead ends: 88 [2025-02-08 01:26:29,784 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2025-02-08 01:26:29,785 INFO L435 NwaCegarLoop]: 91 mSDtfsCounter, 33 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-02-08 01:26:29,785 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 486 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-02-08 01:26:29,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2025-02-08 01:26:29,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2025-02-08 01:26:29,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 53 states have (on average 1.150943396226415) internal successors, (61), 54 states have internal predecessors, (61), 24 states have call successors, (24), 10 states have call predecessors, (24), 10 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2025-02-08 01:26:29,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 108 transitions. [2025-02-08 01:26:29,793 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 108 transitions. Word has length 73 [2025-02-08 01:26:29,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 01:26:29,794 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 108 transitions. [2025-02-08 01:26:29,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2025-02-08 01:26:29,794 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 108 transitions. [2025-02-08 01:26:29,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2025-02-08 01:26:29,796 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 01:26:29,796 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:26:29,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-08 01:26:29,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:26:29,997 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 01:26:29,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:26:29,998 INFO L85 PathProgramCache]: Analyzing trace with hash 53295484, now seen corresponding path program 1 times [2025-02-08 01:26:29,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:26:29,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814423872] [2025-02-08 01:26:29,998 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:26:29,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:26:33,677 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-02-08 01:26:35,045 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-02-08 01:26:35,045 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:26:35,045 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:26:42,260 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2025-02-08 01:26:42,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:26:42,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814423872] [2025-02-08 01:26:42,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814423872] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:26:42,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230983553] [2025-02-08 01:26:42,262 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:26:42,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:26:42,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:26:42,264 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:26:42,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-08 01:26:46,657 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes.