./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_hash_table_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_hash_table_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 414eeb8ea1256fa06cba80a48a09ba5f5bd5aff7438b9ba4ea2d399e84c5db41 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 01:48:47,228 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 01:48:47,309 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-02-08 01:48:47,317 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 01:48:47,318 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 01:48:47,348 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 01:48:47,349 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 01:48:47,349 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 01:48:47,350 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 01:48:47,350 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 01:48:47,350 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 01:48:47,351 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 01:48:47,351 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 01:48:47,351 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 01:48:47,351 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 01:48:47,352 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 01:48:47,352 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 01:48:47,352 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 01:48:47,352 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 01:48:47,352 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 01:48:47,352 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 01:48:47,352 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 01:48:47,352 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 01:48:47,352 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 01:48:47,353 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 01:48:47,353 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 01:48:47,353 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 01:48:47,353 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 01:48:47,353 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 01:48:47,353 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:48:47,353 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 01:48:47,353 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 01:48:47,354 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 01:48:47,354 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 01:48:47,354 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 01:48:47,354 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 01:48:47,354 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 01:48:47,354 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 01:48:47,354 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 01:48:47,354 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 01:48:47,354 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 -> 414eeb8ea1256fa06cba80a48a09ba5f5bd5aff7438b9ba4ea2d399e84c5db41 [2025-02-08 01:48:47,664 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 01:48:47,671 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 01:48:47,674 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 01:48:47,675 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 01:48:47,675 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 01:48:47,677 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness.i [2025-02-08 01:48:48,984 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2f9746ae3/850dfbfcc34b4daf9a42defe1b123904/FLAGdf44acb9f [2025-02-08 01:48:49,562 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 01:48:49,563 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness.i [2025-02-08 01:48:49,606 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2f9746ae3/850dfbfcc34b4daf9a42defe1b123904/FLAGdf44acb9f [2025-02-08 01:48:49,621 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2f9746ae3/850dfbfcc34b4daf9a42defe1b123904 [2025-02-08 01:48:49,623 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 01:48:49,625 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 01:48:49,627 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 01:48:49,628 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 01:48:49,631 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 01:48:49,632 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:48:49" (1/1) ... [2025-02-08 01:48:49,633 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57ff2569 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:48:49, skipping insertion in model container [2025-02-08 01:48:49,633 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:48:49" (1/1) ... [2025-02-08 01:48:49,716 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 01:48:50,002 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_hash_table_clear_harness.i[4494,4507] [2025-02-08 01:48:50,012 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_hash_table_clear_harness.i[4554,4567] [2025-02-08 01:48:50,999 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:48:51,000 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:48:51,001 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:48:51,001 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:48:51,002 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:48:51,013 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:48:51,013 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:48:51,015 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:48:51,015 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:48:51,017 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:48:51,018 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:48:51,018 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:48:51,019 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:48:52,095 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:48:52,096 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:48:52,130 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:48:52,132 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:48:52,148 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:48:52,148 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:48:52,172 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:48:52,173 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:48:52,174 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:48:52,174 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:48:52,174 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:48:52,175 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:48:52,175 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:48:52,272 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_hash_table_clear_harness.i[228101,228114] [2025-02-08 01:48:52,273 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:48:52,310 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 01:48:52,323 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_hash_table_clear_harness.i[4494,4507] [2025-02-08 01:48:52,323 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_hash_table_clear_harness.i[4554,4567] [2025-02-08 01:48:52,382 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:48:52,382 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:48:52,383 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:48:52,383 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:48:52,383 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:48:52,390 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:48:52,392 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:48:52,393 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:48:52,393 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:48:52,394 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:48:52,394 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:48:52,395 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:48:52,395 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:48:52,486 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7585-7596] [2025-02-08 01:48:52,557 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:48:52,558 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:48:52,564 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:48:52,565 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:48:52,567 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:48:52,568 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:48:52,576 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:48:52,577 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:48:52,577 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:48:52,577 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:48:52,578 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:48:52,579 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:48:52,579 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:48:52,596 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_hash_table_clear_harness.i[228101,228114] [2025-02-08 01:48:52,596 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:48:52,871 INFO L204 MainTranslator]: Completed translation [2025-02-08 01:48:52,872 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:48:52 WrapperNode [2025-02-08 01:48:52,872 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 01:48:52,873 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 01:48:52,873 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 01:48:52,873 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 01:48:52,878 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:48:52" (1/1) ... [2025-02-08 01:48:52,974 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:48:52" (1/1) ... [2025-02-08 01:48:53,037 INFO L138 Inliner]: procedures = 764, calls = 2435, calls flagged for inlining = 69, calls inlined = 13, statements flattened = 613 [2025-02-08 01:48:53,038 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 01:48:53,039 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 01:48:53,039 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 01:48:53,039 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 01:48:53,048 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:48:52" (1/1) ... [2025-02-08 01:48:53,048 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:48:52" (1/1) ... [2025-02-08 01:48:53,064 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:48:52" (1/1) ... [2025-02-08 01:48:53,145 INFO L175 MemorySlicer]: Split 292 memory accesses to 8 slices as follows [238, 2, 2, 2, 34, 8, 1, 5]. 82 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [6, 2, 0, 0, 0, 0, 0, 5]. The 241 writes are split as follows [232, 0, 1, 1, 5, 1, 1, 0]. [2025-02-08 01:48:53,149 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:48:52" (1/1) ... [2025-02-08 01:48:53,149 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:48:52" (1/1) ... [2025-02-08 01:48:53,196 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:48:52" (1/1) ... [2025-02-08 01:48:53,204 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:48:52" (1/1) ... [2025-02-08 01:48:53,219 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:48:52" (1/1) ... [2025-02-08 01:48:53,227 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:48:52" (1/1) ... [2025-02-08 01:48:53,243 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 01:48:53,244 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 01:48:53,245 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 01:48:53,245 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 01:48:53,246 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:48:52" (1/1) ... [2025-02-08 01:48:53,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:48:53,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:48:53,280 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 01:48:53,289 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 01:48:53,308 INFO L130 BoogieDeclarations]: Found specification of procedure memset_override_0_impl [2025-02-08 01:48:53,308 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_override_0_impl [2025-02-08 01:48:53,308 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2025-02-08 01:48:53,308 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2025-02-08 01:48:53,308 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2025-02-08 01:48:53,308 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2025-02-08 01:48:53,309 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2025-02-08 01:48:53,309 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2025-02-08 01:48:53,309 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2025-02-08 01:48:53,309 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2025-02-08 01:48:53,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 01:48:53,310 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2025-02-08 01:48:53,310 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2025-02-08 01:48:53,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2025-02-08 01:48:53,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2025-02-08 01:48:53,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2025-02-08 01:48:53,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2025-02-08 01:48:53,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2025-02-08 01:48:53,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2025-02-08 01:48:53,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2025-02-08 01:48:53,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2025-02-08 01:48:53,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 01:48:53,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 01:48:53,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-08 01:48:53,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-02-08 01:48:53,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-02-08 01:48:53,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-02-08 01:48:53,312 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2025-02-08 01:48:53,312 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2025-02-08 01:48:53,312 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2025-02-08 01:48:53,312 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2025-02-08 01:48:53,312 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-08 01:48:53,312 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-08 01:48:53,312 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2025-02-08 01:48:53,312 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2025-02-08 01:48:53,312 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_clear [2025-02-08 01:48:53,312 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_clear [2025-02-08 01:48:53,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 01:48:53,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 01:48:53,313 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2025-02-08 01:48:53,313 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2025-02-08 01:48:53,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-08 01:48:53,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-08 01:48:53,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-02-08 01:48:53,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-02-08 01:48:53,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2025-02-08 01:48:53,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2025-02-08 01:48:53,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2025-02-08 01:48:53,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2025-02-08 01:48:53,313 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2025-02-08 01:48:53,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2025-02-08 01:48:53,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 01:48:53,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 01:48:53,313 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2025-02-08 01:48:53,313 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2025-02-08 01:48:53,313 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2025-02-08 01:48:53,313 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2025-02-08 01:48:53,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2025-02-08 01:48:53,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2025-02-08 01:48:53,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2025-02-08 01:48:53,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2025-02-08 01:48:53,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2025-02-08 01:48:53,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2025-02-08 01:48:53,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2025-02-08 01:48:53,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2025-02-08 01:48:53,313 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-08 01:48:53,314 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-08 01:48:53,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-08 01:48:53,314 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2025-02-08 01:48:53,314 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2025-02-08 01:48:53,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-08 01:48:53,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-08 01:48:53,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-02-08 01:48:53,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-02-08 01:48:53,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-02-08 01:48:53,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2025-02-08 01:48:53,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2025-02-08 01:48:53,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2025-02-08 01:48:53,314 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2025-02-08 01:48:53,314 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2025-02-08 01:48:53,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-02-08 01:48:53,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-02-08 01:48:53,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-02-08 01:48:53,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-02-08 01:48:53,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2025-02-08 01:48:53,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2025-02-08 01:48:53,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2025-02-08 01:48:53,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2025-02-08 01:48:53,314 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2025-02-08 01:48:53,314 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2025-02-08 01:48:53,314 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2025-02-08 01:48:53,317 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2025-02-08 01:48:53,318 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2025-02-08 01:48:53,318 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2025-02-08 01:48:53,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 01:48:53,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 01:48:53,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-08 01:48:53,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-02-08 01:48:53,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-02-08 01:48:53,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-02-08 01:48:53,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2025-02-08 01:48:53,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2025-02-08 01:48:53,318 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2025-02-08 01:48:53,318 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2025-02-08 01:48:53,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 01:48:53,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 01:48:53,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-08 01:48:53,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-08 01:48:53,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-02-08 01:48:53,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-02-08 01:48:53,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-02-08 01:48:53,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-02-08 01:48:53,318 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2025-02-08 01:48:53,318 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2025-02-08 01:48:53,696 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 01:48:53,698 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 01:48:53,759 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L6947: havoc #t~malloc588.base, #t~malloc588.offset; [2025-02-08 01:48:53,793 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L10130: call ULTIMATE.dealloc(~#elemsize~0.base, ~#elemsize~0.offset);havoc ~#elemsize~0.base, ~#elemsize~0.offset; [2025-02-08 01:48:53,856 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L2590: havoc #t~ret57#1; [2025-02-08 01:48:53,859 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L266: havoc #t~nondet9; [2025-02-08 01:48:53,872 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L7415: havoc #t~ret691.base, #t~ret691.offset; [2025-02-08 01:48:53,897 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L10017: havoc #t~mem1492.base, #t~mem1492.offset;havoc #t~short1493;havoc #t~mem1494.base, #t~mem1494.offset;havoc #t~ret1495;havoc #t~short1496; [2025-02-08 01:48:53,904 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L261: havoc #t~nondet4; [2025-02-08 01:48:54,082 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L2630: havoc #t~bitwise60;havoc #t~short61; [2025-02-08 01:48:54,102 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L2617: havoc #t~ret59#1; [2025-02-08 01:49:00,016 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L6843: havoc hash_table_state_has_an_empty_slot_#t~mem571#1; [2025-02-08 01:49:00,016 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L6833: havoc aws_hash_table_has_an_empty_slot_#t~mem566#1.base, aws_hash_table_has_an_empty_slot_#t~mem566#1.offset;havoc aws_hash_table_has_an_empty_slot_#t~ret567#1; [2025-02-08 01:49:00,167 INFO L? ?]: Removed 130 outVars from TransFormulas that were not future-live. [2025-02-08 01:49:00,167 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 01:49:00,188 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 01:49:00,191 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 01:49:00,191 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:49:00 BoogieIcfgContainer [2025-02-08 01:49:00,191 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 01:49:00,194 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 01:49:00,194 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 01:49:00,198 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 01:49:00,199 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 01:48:49" (1/3) ... [2025-02-08 01:49:00,200 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a37fe78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:49:00, skipping insertion in model container [2025-02-08 01:49:00,200 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:48:52" (2/3) ... [2025-02-08 01:49:00,201 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a37fe78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:49:00, skipping insertion in model container [2025-02-08 01:49:00,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:49:00" (3/3) ... [2025-02-08 01:49:00,202 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_hash_table_clear_harness.i [2025-02-08 01:49:00,218 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 01:49:00,220 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_hash_table_clear_harness.i that has 19 procedures, 167 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2025-02-08 01:49:00,279 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 01:49:00,294 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;@53fdd0d8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 01:49:00,294 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-08 01:49:00,298 INFO L276 IsEmpty]: Start isEmpty. Operand has 167 states, 103 states have (on average 1.2135922330097086) internal successors, (125), 107 states have internal predecessors, (125), 41 states have call successors, (41), 18 states have call predecessors, (41), 18 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2025-02-08 01:49:00,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2025-02-08 01:49:00,311 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 01:49:00,312 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:49:00,312 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 01:49:00,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:49:00,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1776458748, now seen corresponding path program 1 times [2025-02-08 01:49:00,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:49:00,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837978453] [2025-02-08 01:49:00,326 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:49:00,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:49:05,453 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 137 statements into 1 equivalence classes. [2025-02-08 01:49:05,849 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 137 of 137 statements. [2025-02-08 01:49:05,850 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:49:05,850 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:49:06,406 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2025-02-08 01:49:06,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:49:06,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837978453] [2025-02-08 01:49:06,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837978453] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:49:06,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600888362] [2025-02-08 01:49:06,409 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:49:06,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:49:06,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:49:06,414 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 01:49:06,415 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 01:49:11,326 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 137 statements into 1 equivalence classes. [2025-02-08 01:49:11,899 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 137 of 137 statements. [2025-02-08 01:49:11,899 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:49:11,899 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:49:11,918 INFO L256 TraceCheckSpWp]: Trace formula consists of 4358 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-02-08 01:49:11,932 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:49:11,952 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2025-02-08 01:49:11,953 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 01:49:11,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600888362] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:49:11,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 01:49:11,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-02-08 01:49:11,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433751500] [2025-02-08 01:49:11,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:49:11,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-08 01:49:11,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:49:11,974 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-08 01:49:11,975 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-08 01:49:11,977 INFO L87 Difference]: Start difference. First operand has 167 states, 103 states have (on average 1.2135922330097086) internal successors, (125), 107 states have internal predecessors, (125), 41 states have call successors, (41), 18 states have call predecessors, (41), 18 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Second operand has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2025-02-08 01:49:12,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 01:49:12,035 INFO L93 Difference]: Finished difference Result 330 states and 435 transitions. [2025-02-08 01:49:12,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-08 01:49:12,038 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 137 [2025-02-08 01:49:12,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 01:49:12,045 INFO L225 Difference]: With dead ends: 330 [2025-02-08 01:49:12,047 INFO L226 Difference]: Without dead ends: 153 [2025-02-08 01:49:12,050 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 138 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 01:49:12,053 INFO L435 NwaCegarLoop]: 202 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 01:49:12,053 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 202 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 01:49:12,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2025-02-08 01:49:12,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2025-02-08 01:49:12,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 96 states have (on average 1.1458333333333333) internal successors, (110), 97 states have internal predecessors, (110), 39 states have call successors, (39), 17 states have call predecessors, (39), 17 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2025-02-08 01:49:12,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 187 transitions. [2025-02-08 01:49:12,106 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 187 transitions. Word has length 137 [2025-02-08 01:49:12,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 01:49:12,107 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 187 transitions. [2025-02-08 01:49:12,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2025-02-08 01:49:12,108 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 187 transitions. [2025-02-08 01:49:12,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2025-02-08 01:49:12,110 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 01:49:12,111 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:49:12,128 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-08 01:49:12,311 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 01:49:12,312 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 01:49:12,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:49:12,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1711535426, now seen corresponding path program 1 times [2025-02-08 01:49:12,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:49:12,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348950333] [2025-02-08 01:49:12,313 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:49:12,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:49:17,041 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 137 statements into 1 equivalence classes. [2025-02-08 01:49:17,214 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 137 of 137 statements. [2025-02-08 01:49:17,215 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:49:17,215 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:49:18,566 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2025-02-08 01:49:18,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:49:18,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348950333] [2025-02-08 01:49:18,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348950333] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:49:18,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:49:18,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 01:49:18,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165367230] [2025-02-08 01:49:18,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:49:18,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 01:49:18,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:49:18,568 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 01:49:18,568 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 01:49:18,570 INFO L87 Difference]: Start difference. First operand 153 states and 187 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2025-02-08 01:49:18,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 01:49:18,707 INFO L93 Difference]: Finished difference Result 275 states and 337 transitions. [2025-02-08 01:49:18,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 01:49:18,708 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 137 [2025-02-08 01:49:18,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 01:49:18,710 INFO L225 Difference]: With dead ends: 275 [2025-02-08 01:49:18,710 INFO L226 Difference]: Without dead ends: 153 [2025-02-08 01:49:18,712 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 01:49:18,713 INFO L435 NwaCegarLoop]: 183 mSDtfsCounter, 0 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 01:49:18,713 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 546 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 01:49:18,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2025-02-08 01:49:18,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2025-02-08 01:49:18,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 96 states have (on average 1.1354166666666667) internal successors, (109), 97 states have internal predecessors, (109), 39 states have call successors, (39), 17 states have call predecessors, (39), 17 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2025-02-08 01:49:18,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 186 transitions. [2025-02-08 01:49:18,730 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 186 transitions. Word has length 137 [2025-02-08 01:49:18,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 01:49:18,731 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 186 transitions. [2025-02-08 01:49:18,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2025-02-08 01:49:18,731 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 186 transitions. [2025-02-08 01:49:18,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2025-02-08 01:49:18,733 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 01:49:18,736 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:49:18,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 01:49:18,736 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 01:49:18,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:49:18,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1318367180, now seen corresponding path program 1 times [2025-02-08 01:49:18,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:49:18,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585966659] [2025-02-08 01:49:18,737 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:49:18,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:49:23,223 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 148 statements into 1 equivalence classes. [2025-02-08 01:49:23,405 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 148 of 148 statements. [2025-02-08 01:49:23,405 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:49:23,405 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:49:24,446 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2025-02-08 01:49:24,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:49:24,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585966659] [2025-02-08 01:49:24,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585966659] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:49:24,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:49:24,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 01:49:24,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862353504] [2025-02-08 01:49:24,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:49:24,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 01:49:24,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:49:24,448 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 01:49:24,448 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 01:49:24,448 INFO L87 Difference]: Start difference. First operand 153 states and 186 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2025-02-08 01:49:24,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 01:49:24,590 INFO L93 Difference]: Finished difference Result 275 states and 336 transitions. [2025-02-08 01:49:24,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 01:49:24,591 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) Word has length 148 [2025-02-08 01:49:24,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 01:49:24,593 INFO L225 Difference]: With dead ends: 275 [2025-02-08 01:49:24,593 INFO L226 Difference]: Without dead ends: 153 [2025-02-08 01:49:24,594 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 01:49:24,595 INFO L435 NwaCegarLoop]: 182 mSDtfsCounter, 0 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 01:49:24,595 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 543 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 01:49:24,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2025-02-08 01:49:24,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2025-02-08 01:49:24,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 96 states have (on average 1.125) internal successors, (108), 97 states have internal predecessors, (108), 39 states have call successors, (39), 17 states have call predecessors, (39), 17 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2025-02-08 01:49:24,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 185 transitions. [2025-02-08 01:49:24,611 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 185 transitions. Word has length 148 [2025-02-08 01:49:24,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 01:49:24,613 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 185 transitions. [2025-02-08 01:49:24,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2025-02-08 01:49:24,613 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 185 transitions. [2025-02-08 01:49:24,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2025-02-08 01:49:24,615 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 01:49:24,615 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:49:24,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 01:49:24,616 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 01:49:24,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:49:24,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1109891442, now seen corresponding path program 1 times [2025-02-08 01:49:24,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:49:24,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140312843] [2025-02-08 01:49:24,617 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:49:24,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:49:28,608 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 148 statements into 1 equivalence classes. [2025-02-08 01:49:28,773 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 148 of 148 statements. [2025-02-08 01:49:28,776 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:49:28,777 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:49:33,640 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2025-02-08 01:49:33,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:49:33,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140312843] [2025-02-08 01:49:33,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140312843] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:49:33,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389891958] [2025-02-08 01:49:33,641 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:49:33,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:49:33,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:49:33,643 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 01:49:33,645 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 01:49:38,140 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 148 statements into 1 equivalence classes. [2025-02-08 01:49:38,753 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 148 of 148 statements. [2025-02-08 01:49:38,754 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:49:38,754 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:49:38,779 INFO L256 TraceCheckSpWp]: Trace formula consists of 4453 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-02-08 01:49:38,788 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:49:41,806 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2025-02-08 01:49:41,806 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:49:44,258 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2025-02-08 01:49:44,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389891958] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-08 01:49:44,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-08 01:49:44,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10, 12] total 22 [2025-02-08 01:49:44,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790825934] [2025-02-08 01:49:44,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:49:44,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 01:49:44,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:49:44,260 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 01:49:44,260 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=416, Unknown=0, NotChecked=0, Total=462 [2025-02-08 01:49:44,261 INFO L87 Difference]: Start difference. First operand 153 states and 185 transitions. Second operand has 8 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (27), 4 states have call predecessors, (27), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2025-02-08 01:49:45,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 01:49:45,483 INFO L93 Difference]: Finished difference Result 159 states and 190 transitions. [2025-02-08 01:49:45,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:49:45,483 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (27), 4 states have call predecessors, (27), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 148 [2025-02-08 01:49:45,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 01:49:45,485 INFO L225 Difference]: With dead ends: 159 [2025-02-08 01:49:45,486 INFO L226 Difference]: Without dead ends: 157 [2025-02-08 01:49:45,486 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=58, Invalid=542, Unknown=0, NotChecked=0, Total=600 [2025-02-08 01:49:45,487 INFO L435 NwaCegarLoop]: 177 mSDtfsCounter, 19 mSDsluCounter, 1037 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 1214 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-08 01:49:45,487 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 1214 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-08 01:49:45,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2025-02-08 01:49:45,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2025-02-08 01:49:45,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 99 states have (on average 1.121212121212121) internal successors, (111), 100 states have internal predecessors, (111), 39 states have call successors, (39), 18 states have call predecessors, (39), 18 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2025-02-08 01:49:45,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 188 transitions. [2025-02-08 01:49:45,504 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 188 transitions. Word has length 148 [2025-02-08 01:49:45,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 01:49:45,505 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 188 transitions. [2025-02-08 01:49:45,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (27), 4 states have call predecessors, (27), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2025-02-08 01:49:45,505 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 188 transitions. [2025-02-08 01:49:45,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2025-02-08 01:49:45,507 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 01:49:45,507 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:49:45,525 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 01:49:45,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:49:45,711 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 01:49:45,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:49:45,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1920531987, now seen corresponding path program 1 times [2025-02-08 01:49:45,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:49:45,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866125399] [2025-02-08 01:49:45,712 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:49:45,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:49:49,859 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 154 statements into 1 equivalence classes. [2025-02-08 01:49:49,954 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 154 of 154 statements. [2025-02-08 01:49:49,955 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:49:49,955 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:49:53,643 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2025-02-08 01:49:53,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:49:53,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866125399] [2025-02-08 01:49:53,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866125399] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:49:53,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783035103] [2025-02-08 01:49:53,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:49:53,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:49:53,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:49:53,645 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 01:49:53,646 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 01:49:58,477 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 154 statements into 1 equivalence classes. [2025-02-08 01:49:59,013 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 154 of 154 statements. [2025-02-08 01:49:59,013 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:49:59,013 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:49:59,039 INFO L256 TraceCheckSpWp]: Trace formula consists of 4466 conjuncts, 40 conjuncts are in the unsatisfiable core [2025-02-08 01:49:59,047 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:49:59,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-08 01:50:06,121 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2025-02-08 01:50:06,122 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 01:50:06,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783035103] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:50:06,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 01:50:06,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [10] total 17 [2025-02-08 01:50:06,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511991396] [2025-02-08 01:50:06,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:50:06,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-08 01:50:06,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:50:06,124 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-08 01:50:06,124 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2025-02-08 01:50:06,124 INFO L87 Difference]: Start difference. First operand 157 states and 188 transitions. Second operand has 13 states, 12 states have (on average 6.5) internal successors, (78), 11 states have internal predecessors, (78), 5 states have call successors, (28), 4 states have call predecessors, (28), 5 states have return successors, (24), 5 states have call predecessors, (24), 5 states have call successors, (24)