./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc 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_string_eq_c_str_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 b64b813c3d856efe8cd859d380d09d4b682c371a0a165a5a5fe0d11dc206dad7 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 05:26:02,360 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 05:26:02,402 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-02-06 05:26:02,407 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 05:26:02,409 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 05:26:02,430 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 05:26:02,430 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 05:26:02,430 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 05:26:02,431 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 05:26:02,431 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 05:26:02,431 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 05:26:02,432 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 05:26:02,432 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 05:26:02,432 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 05:26:02,432 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 05:26:02,433 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 05:26:02,433 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 05:26:02,433 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 05:26:02,433 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 05:26:02,433 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 05:26:02,433 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 05:26:02,433 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 05:26:02,433 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 05:26:02,433 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 05:26:02,433 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 05:26:02,433 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 05:26:02,433 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 05:26:02,433 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 05:26:02,433 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 05:26:02,433 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 05:26:02,434 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 05:26:02,434 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 05:26:02,434 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 05:26:02,434 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 05:26:02,434 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 05:26:02,434 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 05:26:02,434 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 05:26:02,434 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 05:26:02,434 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 05:26:02,435 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 05:26:02,435 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 -> b64b813c3d856efe8cd859d380d09d4b682c371a0a165a5a5fe0d11dc206dad7 [2025-02-06 05:26:02,668 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 05:26:02,678 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 05:26:02,680 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 05:26:02,680 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 05:26:02,681 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 05:26:02,682 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_harness.i [2025-02-06 05:26:03,852 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/647dd6112/b90c46fd832d4cf9b0e760367289ce05/FLAG9840f4d1c [2025-02-06 05:26:04,286 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 05:26:04,289 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_harness.i [2025-02-06 05:26:04,322 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/647dd6112/b90c46fd832d4cf9b0e760367289ce05/FLAG9840f4d1c [2025-02-06 05:26:04,333 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/647dd6112/b90c46fd832d4cf9b0e760367289ce05 [2025-02-06 05:26:04,335 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 05:26:04,336 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 05:26:04,337 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 05:26:04,337 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 05:26:04,340 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 05:26:04,341 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 05:26:04" (1/1) ... [2025-02-06 05:26:04,341 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@442b9cbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:26:04, skipping insertion in model container [2025-02-06 05:26:04,343 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 05:26:04" (1/1) ... [2025-02-06 05:26:04,396 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 05:26:04,589 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_string_eq_c_str_harness.i[4493,4506] [2025-02-06 05:26:04,596 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_string_eq_c_str_harness.i[4553,4566] [2025-02-06 05:26:05,117 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:26:05,117 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:26:05,118 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:26:05,118 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:26:05,119 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:26:05,127 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:26:05,127 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:26:05,128 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:26:05,129 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:26:05,799 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:26:05,799 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:26:05,824 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 05:26:05,883 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 05:26:05,892 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_string_eq_c_str_harness.i[4493,4506] [2025-02-06 05:26:05,892 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_string_eq_c_str_harness.i[4553,4566] [2025-02-06 05:26:05,928 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:26:05,929 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:26:05,929 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:26:05,930 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:26:05,930 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:26:05,937 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:26:05,938 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:26:05,939 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:26:05,939 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:26:06,033 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8588] [2025-02-06 05:26:06,035 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:26:06,035 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-06 05:26:06,045 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 05:26:06,208 INFO L204 MainTranslator]: Completed translation [2025-02-06 05:26:06,209 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:26:06 WrapperNode [2025-02-06 05:26:06,209 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 05:26:06,210 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 05:26:06,210 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 05:26:06,210 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 05:26:06,214 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:26:06" (1/1) ... [2025-02-06 05:26:06,259 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:26:06" (1/1) ... [2025-02-06 05:26:06,289 INFO L138 Inliner]: procedures = 670, calls = 2270, calls flagged for inlining = 60, calls inlined = 8, statements flattened = 396 [2025-02-06 05:26:06,290 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 05:26:06,290 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 05:26:06,290 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 05:26:06,290 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 05:26:06,306 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:26:06" (1/1) ... [2025-02-06 05:26:06,309 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:26:06" (1/1) ... [2025-02-06 05:26:06,314 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:26:06" (1/1) ... [2025-02-06 05:26:06,338 INFO L175 MemorySlicer]: Split 279 memory accesses to 4 slices as follows [2, 257, 15, 5]. 92 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 0, 0, 5]. The 260 writes are split as follows [0, 257, 3, 0]. [2025-02-06 05:26:06,338 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:26:06" (1/1) ... [2025-02-06 05:26:06,338 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:26:06" (1/1) ... [2025-02-06 05:26:06,353 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:26:06" (1/1) ... [2025-02-06 05:26:06,354 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:26:06" (1/1) ... [2025-02-06 05:26:06,357 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:26:06" (1/1) ... [2025-02-06 05:26:06,364 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:26:06" (1/1) ... [2025-02-06 05:26:06,368 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 05:26:06,369 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 05:26:06,369 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 05:26:06,369 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 05:26:06,370 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:26:06" (1/1) ... [2025-02-06 05:26:06,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 05:26:06,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 05:26:06,404 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) [2025-02-06 05:26:06,416 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 [2025-02-06 05:26:06,431 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq_c_str [2025-02-06 05:26:06,432 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq_c_str [2025-02-06 05:26:06,432 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2025-02-06 05:26:06,432 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2025-02-06 05:26:06,432 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_string_is_allocated_bounded_length [2025-02-06 05:26:06,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_string_is_allocated_bounded_length [2025-02-06 05:26:06,432 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2025-02-06 05:26:06,432 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2025-02-06 05:26:06,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2025-02-06 05:26:06,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2025-02-06 05:26:06,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2025-02-06 05:26:06,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2025-02-06 05:26:06,432 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 05:26:06,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 05:26:06,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-06 05:26:06,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-02-06 05:26:06,433 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-06 05:26:06,433 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-06 05:26:06,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 05:26:06,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 05:26:06,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-06 05:26:06,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-06 05:26:06,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-02-06 05:26:06,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-02-06 05:26:06,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 05:26:06,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 05:26:06,433 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2025-02-06 05:26:06,433 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2025-02-06 05:26:06,433 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-06 05:26:06,433 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-06 05:26:06,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-02-06 05:26:06,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-02-06 05:26:06,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-02-06 05:26:06,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-02-06 05:26:06,434 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2025-02-06 05:26:06,434 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2025-02-06 05:26:06,434 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2025-02-06 05:26:06,434 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2025-02-06 05:26:06,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 05:26:06,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 05:26:06,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-06 05:26:06,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-02-06 05:26:06,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 05:26:06,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 05:26:06,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-06 05:26:06,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-06 05:26:06,637 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 05:26:06,639 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 05:26:06,671 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L6887: havoc #t~malloc557.base, #t~malloc557.offset; [2025-02-06 05:26:06,679 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L261: havoc #t~nondet4; [2025-02-06 05:26:06,728 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L8110: havoc #t~mem921; [2025-02-06 05:26:06,748 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L6257: havoc #t~mem472;havoc #t~short473;havoc #t~mem474;havoc #t~mem475;havoc #t~short476; [2025-02-06 05:26:06,750 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L266: havoc #t~nondet9; [2025-02-06 05:26:06,773 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L6804: havoc #t~ret543#1.base, #t~ret543#1.offset; [2025-02-06 05:26:12,616 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L7598: havoc aws_string_eq_c_str_#t~mem734#1;havoc aws_string_eq_c_str_#t~ret735#1; [2025-02-06 05:26:12,706 INFO L? ?]: Removed 92 outVars from TransFormulas that were not future-live. [2025-02-06 05:26:12,706 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 05:26:12,712 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 05:26:12,712 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 05:26:12,713 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 05:26:12 BoogieIcfgContainer [2025-02-06 05:26:12,713 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 05:26:12,714 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 05:26:12,714 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 05:26:12,717 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 05:26:12,717 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 05:26:04" (1/3) ... [2025-02-06 05:26:12,718 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@232c133d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 05:26:12, skipping insertion in model container [2025-02-06 05:26:12,718 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:26:06" (2/3) ... [2025-02-06 05:26:12,718 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@232c133d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 05:26:12, skipping insertion in model container [2025-02-06 05:26:12,718 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 05:26:12" (3/3) ... [2025-02-06 05:26:12,719 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_string_eq_c_str_harness.i [2025-02-06 05:26:12,729 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 05:26:12,730 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_string_eq_c_str_harness.i that has 10 procedures, 105 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-06 05:26:12,773 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 05:26:12,782 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;@567da9ac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 05:26:12,782 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-06 05:26:12,787 INFO L276 IsEmpty]: Start isEmpty. Operand has 105 states, 68 states have (on average 1.2352941176470589) internal successors, (84), 69 states have internal predecessors, (84), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2025-02-06 05:26:12,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-02-06 05:26:12,793 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 05:26:12,793 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 05:26:12,794 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 05:26:12,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 05:26:12,798 INFO L85 PathProgramCache]: Analyzing trace with hash 2002151288, now seen corresponding path program 1 times [2025-02-06 05:26:12,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 05:26:12,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896408758] [2025-02-06 05:26:12,803 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 05:26:12,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 05:26:57,745 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-02-06 05:26:58,125 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-02-06 05:26:58,125 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 05:26:58,125 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 05:26:58,505 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 05:26:58,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 05:26:58,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896408758] [2025-02-06 05:26:58,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896408758] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 05:26:58,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 05:26:58,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 05:26:58,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261814841] [2025-02-06 05:26:58,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 05:26:58,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-06 05:26:58,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 05:26:58,524 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-06 05:26:58,524 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 05:26:58,526 INFO L87 Difference]: Start difference. First operand has 105 states, 68 states have (on average 1.2352941176470589) internal successors, (84), 69 states have internal predecessors, (84), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-06 05:26:58,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 05:26:58,552 INFO L93 Difference]: Finished difference Result 201 states and 275 transitions. [2025-02-06 05:26:58,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-06 05:26:58,555 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 36 [2025-02-06 05:26:58,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 05:26:58,560 INFO L225 Difference]: With dead ends: 201 [2025-02-06 05:26:58,560 INFO L226 Difference]: Without dead ends: 99 [2025-02-06 05:26:58,563 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 05:26:58,565 INFO L435 NwaCegarLoop]: 134 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, 134 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 [2025-02-06 05:26:58,567 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 05:26:58,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2025-02-06 05:26:58,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2025-02-06 05:26:58,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 63 states have (on average 1.1904761904761905) internal successors, (75), 64 states have internal predecessors, (75), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2025-02-06 05:26:58,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 126 transitions. [2025-02-06 05:26:58,604 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 126 transitions. Word has length 36 [2025-02-06 05:26:58,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 05:26:58,606 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 126 transitions. [2025-02-06 05:26:58,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-06 05:26:58,606 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 126 transitions. [2025-02-06 05:26:58,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-02-06 05:26:58,609 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 05:26:58,609 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 05:26:58,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 05:26:58,610 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 05:26:58,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 05:26:58,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1157679417, now seen corresponding path program 1 times [2025-02-06 05:26:58,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 05:26:58,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657497281] [2025-02-06 05:26:58,611 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 05:26:58,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 05:27:43,298 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-02-06 05:27:43,433 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-02-06 05:27:43,434 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 05:27:43,434 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 05:27:44,453 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 05:27:44,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 05:27:44,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657497281] [2025-02-06 05:27:44,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657497281] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 05:27:44,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 05:27:44,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 05:27:44,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859869562] [2025-02-06 05:27:44,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 05:27:44,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 05:27:44,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 05:27:44,455 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 05:27:44,456 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 05:27:44,456 INFO L87 Difference]: Start difference. First operand 99 states and 126 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-02-06 05:27:44,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 05:27:44,585 INFO L93 Difference]: Finished difference Result 157 states and 201 transitions. [2025-02-06 05:27:44,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 05:27:44,586 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 36 [2025-02-06 05:27:44,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 05:27:44,587 INFO L225 Difference]: With dead ends: 157 [2025-02-06 05:27:44,587 INFO L226 Difference]: Without dead ends: 99 [2025-02-06 05:27:44,587 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 [2025-02-06 05:27:44,588 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 11 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 05:27:44,588 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 365 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 05:27:44,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2025-02-06 05:27:44,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2025-02-06 05:27:44,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 63 states have (on average 1.1746031746031746) internal successors, (74), 64 states have internal predecessors, (74), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2025-02-06 05:27:44,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 125 transitions. [2025-02-06 05:27:44,602 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 125 transitions. Word has length 36 [2025-02-06 05:27:44,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 05:27:44,602 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 125 transitions. [2025-02-06 05:27:44,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-02-06 05:27:44,602 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 125 transitions. [2025-02-06 05:27:44,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-02-06 05:27:44,604 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 05:27:44,604 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 05:27:44,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 05:27:44,605 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 05:27:44,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 05:27:44,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1963842194, now seen corresponding path program 1 times [2025-02-06 05:27:44,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 05:27:44,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474873642] [2025-02-06 05:27:44,608 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 05:27:44,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms