./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness-1.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_priority_queue_init_dynamic_harness-1.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 f4db5fb03820aea666082345ea177387bf1c218ce33dad19402cb646ed5abf58 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 01:55:02,822 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 01:55:02,888 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-02-08 01:55:02,895 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 01:55:02,895 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 01:55:02,920 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 01:55:02,921 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 01:55:02,921 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 01:55:02,922 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 01:55:02,922 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 01:55:02,923 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 01:55:02,923 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 01:55:02,923 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 01:55:02,923 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 01:55:02,924 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 01:55:02,924 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 01:55:02,924 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 01:55:02,924 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 01:55:02,924 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 01:55:02,924 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 01:55:02,925 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 01:55:02,925 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 01:55:02,925 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 01:55:02,925 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 01:55:02,925 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 01:55:02,925 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 01:55:02,925 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 01:55:02,925 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 01:55:02,925 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 01:55:02,926 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:55:02,926 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 01:55:02,926 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 01:55:02,926 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 01:55:02,926 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 01:55:02,926 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 01:55:02,926 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 01:55:02,927 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 01:55:02,927 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 01:55:02,927 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 01:55:02,927 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 01:55:02,927 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 -> f4db5fb03820aea666082345ea177387bf1c218ce33dad19402cb646ed5abf58 [2025-02-08 01:55:03,175 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 01:55:03,184 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 01:55:03,187 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 01:55:03,188 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 01:55:03,189 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 01:55:03,190 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness-1.i [2025-02-08 01:55:04,396 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4bcb93a37/dd07c4b86a05476885521ba5127e612b/FLAG3b54553ba [2025-02-08 01:55:04,980 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 01:55:04,980 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness-1.i [2025-02-08 01:55:05,024 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4bcb93a37/dd07c4b86a05476885521ba5127e612b/FLAG3b54553ba [2025-02-08 01:55:05,480 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4bcb93a37/dd07c4b86a05476885521ba5127e612b [2025-02-08 01:55:05,483 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 01:55:05,484 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 01:55:05,485 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 01:55:05,485 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 01:55:05,489 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 01:55:05,490 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:55:05" (1/1) ... [2025-02-08 01:55:05,492 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5df4a953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:55:05, skipping insertion in model container [2025-02-08 01:55:05,492 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:55:05" (1/1) ... [2025-02-08 01:55:05,569 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 01:55:05,856 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_priority_queue_init_dynamic_harness-1.i[4505,4518] [2025-02-08 01:55:05,865 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_priority_queue_init_dynamic_harness-1.i[4565,4578] [2025-02-08 01:55:06,465 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:06,470 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:06,470 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:06,470 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:06,471 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:06,483 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:06,484 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:06,485 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:06,485 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:06,821 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:06,822 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:06,871 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:55:06,903 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 01:55:06,915 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_priority_queue_init_dynamic_harness-1.i[4505,4518] [2025-02-08 01:55:06,917 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_priority_queue_init_dynamic_harness-1.i[4565,4578] [2025-02-08 01:55:06,986 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:06,987 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:06,990 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:06,990 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:06,990 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:06,997 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:06,998 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:06,998 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:06,999 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:07,094 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:07,095 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:55:07,103 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7703-7714] [2025-02-08 01:55:07,134 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:55:07,319 INFO L204 MainTranslator]: Completed translation [2025-02-08 01:55:07,320 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:55:07 WrapperNode [2025-02-08 01:55:07,320 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 01:55:07,321 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 01:55:07,321 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 01:55:07,321 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 01:55:07,324 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:55:07" (1/1) ... [2025-02-08 01:55:07,391 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:55:07" (1/1) ... [2025-02-08 01:55:07,435 INFO L138 Inliner]: procedures = 678, calls = 1512, calls flagged for inlining = 52, calls inlined = 9, statements flattened = 737 [2025-02-08 01:55:07,436 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 01:55:07,436 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 01:55:07,436 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 01:55:07,436 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 01:55:07,445 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:55:07" (1/1) ... [2025-02-08 01:55:07,445 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:55:07" (1/1) ... [2025-02-08 01:55:07,455 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:55:07" (1/1) ... [2025-02-08 01:55:07,554 INFO L175 MemorySlicer]: Split 287 memory accesses to 5 slices as follows [2, 238, 35, 7, 5]. 83 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [2, 6, 0, 1, 5]. The 239 writes are split as follows [0, 232, 6, 1, 0]. [2025-02-08 01:55:07,554 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:55:07" (1/1) ... [2025-02-08 01:55:07,555 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:55:07" (1/1) ... [2025-02-08 01:55:07,586 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:55:07" (1/1) ... [2025-02-08 01:55:07,587 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:55:07" (1/1) ... [2025-02-08 01:55:07,596 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:55:07" (1/1) ... [2025-02-08 01:55:07,599 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:55:07" (1/1) ... [2025-02-08 01:55:07,614 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 01:55:07,616 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 01:55:07,616 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 01:55:07,616 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 01:55:07,617 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:55:07" (1/1) ... [2025-02-08 01:55:07,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:55:07,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:55:07,647 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 01:55:07,650 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 01:55:07,671 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2025-02-08 01:55:07,671 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2025-02-08 01:55:07,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 01:55:07,672 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2025-02-08 01:55:07,672 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2025-02-08 01:55:07,672 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2025-02-08 01:55:07,673 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2025-02-08 01:55:07,673 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2025-02-08 01:55:07,673 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2025-02-08 01:55:07,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2025-02-08 01:55:07,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2025-02-08 01:55:07,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2025-02-08 01:55:07,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2025-02-08 01:55:07,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2025-02-08 01:55:07,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 01:55:07,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 01:55:07,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-08 01:55:07,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-02-08 01:55:07,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-02-08 01:55:07,673 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2025-02-08 01:55:07,673 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2025-02-08 01:55:07,673 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-08 01:55:07,673 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-08 01:55:07,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 01:55:07,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 01:55:07,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-08 01:55:07,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-08 01:55:07,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-02-08 01:55:07,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-02-08 01:55:07,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2025-02-08 01:55:07,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 01:55:07,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 01:55:07,675 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2025-02-08 01:55:07,675 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2025-02-08 01:55:07,675 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2025-02-08 01:55:07,675 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2025-02-08 01:55:07,675 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2025-02-08 01:55:07,677 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2025-02-08 01:55:07,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2025-02-08 01:55:07,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2025-02-08 01:55:07,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2025-02-08 01:55:07,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2025-02-08 01:55:07,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2025-02-08 01:55:07,677 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2025-02-08 01:55:07,677 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2025-02-08 01:55:07,677 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2025-02-08 01:55:07,677 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2025-02-08 01:55:07,677 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-08 01:55:07,677 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-08 01:55:07,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-08 01:55:07,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-08 01:55:07,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-08 01:55:07,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-02-08 01:55:07,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-02-08 01:55:07,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-02-08 01:55:07,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-02-08 01:55:07,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-02-08 01:55:07,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-02-08 01:55:07,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-02-08 01:55:07,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2025-02-08 01:55:07,677 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2025-02-08 01:55:07,677 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2025-02-08 01:55:07,678 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2025-02-08 01:55:07,678 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2025-02-08 01:55:07,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 01:55:07,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 01:55:07,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-08 01:55:07,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-02-08 01:55:07,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-02-08 01:55:07,678 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2025-02-08 01:55:07,678 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2025-02-08 01:55:07,678 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2025-02-08 01:55:07,678 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2025-02-08 01:55:07,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 01:55:07,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 01:55:07,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-08 01:55:07,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-08 01:55:07,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-02-08 01:55:07,974 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 01:55:07,977 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 01:55:08,030 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L2782: havoc #t~malloc77.base, #t~malloc77.offset; [2025-02-08 01:55:08,034 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L263: havoc #t~nondet6; [2025-02-08 01:55:08,074 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L2588: havoc #t~ret57#1; [2025-02-08 01:55:08,113 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L2796: havoc #t~ret81;havoc #t~ite83.base, #t~ite83.offset;havoc #t~ret82.base, #t~ret82.offset; [2025-02-08 01:55:08,124 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L7341: havoc #t~ret657.base, #t~ret657.offset; [2025-02-08 01:55:08,203 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L7494: havoc aws_priority_queue_backpointers_valid_#t~ret687#1;havoc aws_priority_queue_backpointers_valid_#t~short688#1; [2025-02-08 01:55:08,241 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 01:55:08,244 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L261: havoc #t~nondet4; [2025-02-08 01:55:08,252 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L2821: havoc #t~ret89.base, #t~ret89.offset; [2025-02-08 01:55:13,578 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L3208: aws_array_list_init_dynamic_#t~ret118#1.base, aws_array_list_init_dynamic_#t~ret118#1.offset := aws_mem_acquire_#res#1.base, aws_mem_acquire_#res#1.offset;havoc aws_mem_acquire_#t~ret90#1, aws_mem_acquire_#t~ret91#1.base, aws_mem_acquire_#t~ret91#1.offset, aws_mem_acquire_#t~ret92#1, aws_mem_acquire_~allocator#1.base, aws_mem_acquire_~allocator#1.offset, aws_mem_acquire_~size#1, aws_mem_acquire_~mem~0#1.base, aws_mem_acquire_~mem~0#1.offset;havoc aws_mem_acquire_#in~allocator#1.base, aws_mem_acquire_#in~allocator#1.offset, aws_mem_acquire_#in~size#1;assume { :end_inline_aws_mem_acquire } true;call write~$Pointer$#2(aws_array_list_init_dynamic_#t~ret118#1.base, aws_array_list_init_dynamic_#t~ret118#1.offset, aws_array_list_init_dynamic_~list#1.base, 32 + aws_array_list_init_dynamic_~list#1.offset, 8);havoc aws_array_list_init_dynamic_#t~mem117#1;havoc aws_array_list_init_dynamic_#t~ret118#1.base, aws_array_list_init_dynamic_#t~ret118#1.offset;call aws_array_list_init_dynamic_#t~mem119#1.base, aws_array_list_init_dynamic_#t~mem119#1.offset := read~$Pointer$#2(aws_array_list_init_dynamic_~list#1.base, 32 + aws_array_list_init_dynamic_~list#1.offset, 8); [2025-02-08 01:55:13,578 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L3209: assume aws_array_list_init_dynamic_#t~mem119#1.base == 0 && aws_array_list_init_dynamic_#t~mem119#1.offset == 0;havoc aws_array_list_init_dynamic_#t~mem119#1.base, aws_array_list_init_dynamic_#t~mem119#1.offset; [2025-02-08 01:55:13,578 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L3209: assume !(aws_array_list_init_dynamic_#t~mem119#1.base == 0 && aws_array_list_init_dynamic_#t~mem119#1.offset == 0);havoc aws_array_list_init_dynamic_#t~mem119#1.base, aws_array_list_init_dynamic_#t~mem119#1.offset;call aws_array_list_init_dynamic_#t~mem120#1 := read~int#3(aws_array_list_init_dynamic_~#allocation_size~0#1.base, aws_array_list_init_dynamic_~#allocation_size~0#1.offset, 8);call write~int#2(aws_array_list_init_dynamic_#t~mem120#1, aws_array_list_init_dynamic_~list#1.base, 8 + aws_array_list_init_dynamic_~list#1.offset, 8);havoc aws_array_list_init_dynamic_#t~mem120#1; [2025-02-08 01:55:13,579 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L3226: aws_array_list_init_dynamic_#res#1 := -1;call ULTIMATE.dealloc(aws_array_list_init_dynamic_~#allocation_size~0#1.base, aws_array_list_init_dynamic_~#allocation_size~0#1.offset);havoc aws_array_list_init_dynamic_~#allocation_size~0#1.base, aws_array_list_init_dynamic_~#allocation_size~0#1.offset; [2025-02-08 01:55:13,579 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L3226-2: SUMMARY for call aws_array_list_init_dynamic_#t~ret126#1 := aws_is_mem_zeroed(aws_array_list_init_dynamic_~list#1.base, aws_array_list_init_dynamic_~list#1.offset, 40); srcloc: null [2025-02-08 01:55:13,579 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L3226-1: SUMMARY for call __VERIFIER_assert((if 0 == aws_array_list_init_dynamic_#t~ret126#1 % 256 then 0 else 1)); srcloc: null [2025-02-08 01:55:13,579 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L3202: call ULTIMATE.dealloc(aws_array_list_init_dynamic_~#allocation_size~0#1.base, aws_array_list_init_dynamic_~#allocation_size~0#1.offset);havoc aws_array_list_init_dynamic_~#allocation_size~0#1.base, aws_array_list_init_dynamic_~#allocation_size~0#1.offset; [2025-02-08 01:55:13,666 INFO L? ?]: Removed 141 outVars from TransFormulas that were not future-live. [2025-02-08 01:55:13,666 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 01:55:13,682 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 01:55:13,682 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 01:55:13,682 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:55:13 BoogieIcfgContainer [2025-02-08 01:55:13,682 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 01:55:13,687 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 01:55:13,688 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 01:55:13,692 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 01:55:13,692 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 01:55:05" (1/3) ... [2025-02-08 01:55:13,693 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2914b8f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:55:13, skipping insertion in model container [2025-02-08 01:55:13,693 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:55:07" (2/3) ... [2025-02-08 01:55:13,693 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2914b8f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:55:13, skipping insertion in model container [2025-02-08 01:55:13,694 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:55:13" (3/3) ... [2025-02-08 01:55:13,695 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_init_dynamic_harness-1.i [2025-02-08 01:55:13,708 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 01:55:13,710 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_priority_queue_init_dynamic_harness-1.i that has 17 procedures, 196 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2025-02-08 01:55:13,770 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 01:55:13,782 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;@653e493, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 01:55:13,783 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-08 01:55:13,788 INFO L276 IsEmpty]: Start isEmpty. Operand has 196 states, 121 states have (on average 1.2727272727272727) internal successors, (154), 126 states have internal predecessors, (154), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2025-02-08 01:55:13,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2025-02-08 01:55:13,798 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 01:55:13,799 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 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] [2025-02-08 01:55:13,800 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 01:55:13,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:55:13,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1096425602, now seen corresponding path program 1 times [2025-02-08 01:55:13,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:55:13,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558457684] [2025-02-08 01:55:13,813 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:55:13,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:55:18,627 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 110 statements into 1 equivalence classes. [2025-02-08 01:55:19,056 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 110 of 110 statements. [2025-02-08 01:55:19,057 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:55:19,057 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:55:19,621 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2025-02-08 01:55:19,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:55:19,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558457684] [2025-02-08 01:55:19,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558457684] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:55:19,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381075273] [2025-02-08 01:55:19,624 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:55:19,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:55:19,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:55:19,628 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 01:55:19,631 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 01:55:24,516 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 110 statements into 1 equivalence classes. [2025-02-08 01:55:25,137 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 110 of 110 statements. [2025-02-08 01:55:25,138 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:55:25,138 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:55:25,161 INFO L256 TraceCheckSpWp]: Trace formula consists of 4214 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-02-08 01:55:25,171 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:55:25,197 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2025-02-08 01:55:25,198 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 01:55:25,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381075273] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:55:25,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 01:55:25,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-02-08 01:55:25,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817308213] [2025-02-08 01:55:25,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:55:25,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-08 01:55:25,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:55:25,222 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-08 01:55:25,222 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-08 01:55:25,225 INFO L87 Difference]: Start difference. First operand has 196 states, 121 states have (on average 1.2727272727272727) internal successors, (154), 126 states have internal predecessors, (154), 54 states have call successors, (54), 16 states have call predecessors, (54), 16 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) Second operand has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2025-02-08 01:55:25,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 01:55:25,265 INFO L93 Difference]: Finished difference Result 384 states and 543 transitions. [2025-02-08 01:55:25,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-08 01:55:25,267 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 110 [2025-02-08 01:55:25,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 01:55:25,276 INFO L225 Difference]: With dead ends: 384 [2025-02-08 01:55:25,276 INFO L226 Difference]: Without dead ends: 157 [2025-02-08 01:55:25,280 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 111 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 01:55:25,282 INFO L435 NwaCegarLoop]: 256 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, 256 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 01:55:25,282 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 01:55:25,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2025-02-08 01:55:25,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2025-02-08 01:55:25,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 99 states have (on average 1.2222222222222223) internal successors, (121), 101 states have internal predecessors, (121), 45 states have call successors, (45), 12 states have call predecessors, (45), 12 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2025-02-08 01:55:25,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 209 transitions. [2025-02-08 01:55:25,322 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 209 transitions. Word has length 110 [2025-02-08 01:55:25,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 01:55:25,324 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 209 transitions. [2025-02-08 01:55:25,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2025-02-08 01:55:25,324 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 209 transitions. [2025-02-08 01:55:25,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2025-02-08 01:55:25,328 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 01:55:25,329 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:55:25,348 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 01:55:25,529 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 01:55:25,530 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 01:55:25,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:55:25,531 INFO L85 PathProgramCache]: Analyzing trace with hash -768697058, now seen corresponding path program 1 times [2025-02-08 01:55:25,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:55:25,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853600774] [2025-02-08 01:55:25,531 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:55:25,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:55:29,414 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 146 statements into 1 equivalence classes. [2025-02-08 01:55:29,651 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 146 of 146 statements. [2025-02-08 01:55:29,651 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:55:29,651 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:55:31,702 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2025-02-08 01:55:31,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:55:31,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853600774] [2025-02-08 01:55:31,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853600774] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:55:31,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39711238] [2025-02-08 01:55:31,705 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:55:31,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:55:31,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:55:31,707 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 01:55:31,710 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 01:55:36,323 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 146 statements into 1 equivalence classes. [2025-02-08 01:55:36,878 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 146 of 146 statements. [2025-02-08 01:55:36,878 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:55:36,878 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:55:36,898 INFO L256 TraceCheckSpWp]: Trace formula consists of 4364 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-08 01:55:36,905 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:55:37,561 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2025-02-08 01:55:37,562 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 01:55:37,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39711238] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:55:37,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 01:55:37,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2025-02-08 01:55:37,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035093046] [2025-02-08 01:55:37,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:55:37,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 01:55:37,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:55:37,564 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 01:55:37,564 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-02-08 01:55:37,565 INFO L87 Difference]: Start difference. First operand 157 states and 209 transitions. Second operand has 6 states, 5 states have (on average 12.6) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2025-02-08 01:55:38,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 01:55:38,118 INFO L93 Difference]: Finished difference Result 291 states and 385 transitions. [2025-02-08 01:55:38,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 01:55:38,119 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.6) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 146 [2025-02-08 01:55:38,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 01:55:38,121 INFO L225 Difference]: With dead ends: 291 [2025-02-08 01:55:38,121 INFO L226 Difference]: Without dead ends: 157 [2025-02-08 01:55:38,129 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-02-08 01:55:38,130 INFO L435 NwaCegarLoop]: 202 mSDtfsCounter, 6 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 996 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-08 01:55:38,130 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 996 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-08 01:55:38,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2025-02-08 01:55:38,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2025-02-08 01:55:38,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 99 states have (on average 1.2121212121212122) internal successors, (120), 101 states have internal predecessors, (120), 45 states have call successors, (45), 12 states have call predecessors, (45), 12 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2025-02-08 01:55:38,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 208 transitions. [2025-02-08 01:55:38,145 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 208 transitions. Word has length 146 [2025-02-08 01:55:38,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 01:55:38,145 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 208 transitions. [2025-02-08 01:55:38,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.6) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2025-02-08 01:55:38,147 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 208 transitions. [2025-02-08 01:55:38,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2025-02-08 01:55:38,150 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 01:55:38,150 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:55:38,166 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 01:55:38,351 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 01:55:38,351 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 01:55:38,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:55:38,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1541077724, now seen corresponding path program 1 times [2025-02-08 01:55:38,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:55:38,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156753406] [2025-02-08 01:55:38,352 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:55:38,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:55:41,926 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 148 statements into 1 equivalence classes. [2025-02-08 01:55:42,562 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 148 of 148 statements. [2025-02-08 01:55:42,564 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:55:42,564 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:55:45,026 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2025-02-08 01:55:45,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:55:45,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156753406] [2025-02-08 01:55:45,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156753406] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:55:45,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962671663] [2025-02-08 01:55:45,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:55:45,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:55:45,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:55:45,032 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 01:55:45,034 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 01:55:49,378 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 148 statements into 1 equivalence classes.