./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_harness_negated.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash ac2d6f81182a30a3913994ab9f22d7c2f1f468956657d41080d094a676bb2180 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 18:19:59,149 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 18:19:59,202 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-03-08 18:19:59,206 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 18:19:59,206 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 18:19:59,220 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 18:19:59,221 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 18:19:59,222 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 18:19:59,222 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 18:19:59,222 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 18:19:59,223 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 18:19:59,223 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 18:19:59,223 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 18:19:59,223 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 18:19:59,223 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 18:19:59,223 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 18:19:59,224 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 18:19:59,224 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 18:19:59,224 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 18:19:59,224 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 18:19:59,224 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 18:19:59,224 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 18:19:59,224 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 18:19:59,224 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 18:19:59,224 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 18:19:59,224 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 18:19:59,224 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 18:19:59,225 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 18:19:59,225 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 18:19:59,225 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 18:19:59,225 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 18:19:59,225 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 18:19:59,225 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 18:19:59,225 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 18:19:59,225 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 18:19:59,226 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 18:19:59,226 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 18:19:59,226 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 18:19:59,226 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 18:19:59,226 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 18:19:59,226 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac2d6f81182a30a3913994ab9f22d7c2f1f468956657d41080d094a676bb2180 [2025-03-08 18:19:59,423 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 18:19:59,428 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 18:19:59,429 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 18:19:59,430 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 18:19:59,430 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 18:19:59,431 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_harness_negated.i [2025-03-08 18:20:00,564 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/271d1be56/442179e5e98449a58bed2002dbdfc7ed/FLAGbd2c98ca7 [2025-03-08 18:20:01,003 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 18:20:01,004 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_harness_negated.i [2025-03-08 18:20:01,043 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/271d1be56/442179e5e98449a58bed2002dbdfc7ed/FLAGbd2c98ca7 [2025-03-08 18:20:01,057 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/271d1be56/442179e5e98449a58bed2002dbdfc7ed [2025-03-08 18:20:01,059 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 18:20:01,060 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 18:20:01,061 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 18:20:01,061 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 18:20:01,064 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 18:20:01,065 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 06:20:01" (1/1) ... [2025-03-08 18:20:01,066 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2007c5c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:20:01, skipping insertion in model container [2025-03-08 18:20:01,066 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 06:20:01" (1/1) ... [2025-03-08 18:20:01,131 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 18:20:01,306 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_harness_negated.i[4499,4512] [2025-03-08 18:20:01,313 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_harness_negated.i[4559,4572] [2025-03-08 18:20:01,716 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:20:01,717 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:20:01,718 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:20:01,718 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:20:01,719 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:20:01,726 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:20:01,727 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:20:01,728 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:20:01,728 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:20:02,093 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:20:02,094 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:20:02,110 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 18:20:02,138 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 18:20:02,147 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_harness_negated.i[4499,4512] [2025-03-08 18:20:02,148 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_harness_negated.i[4559,4572] [2025-03-08 18:20:02,175 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:20:02,176 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:20:02,176 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:20:02,176 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:20:02,177 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:20:02,182 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:20:02,182 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:20:02,183 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:20:02,183 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:20:02,308 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8556] [2025-03-08 18:20:02,309 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:20:02,309 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:20:02,318 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 18:20:02,468 INFO L204 MainTranslator]: Completed translation [2025-03-08 18:20:02,468 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:20:02 WrapperNode [2025-03-08 18:20:02,469 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 18:20:02,469 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 18:20:02,469 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 18:20:02,469 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 18:20:02,473 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:20:02" (1/1) ... [2025-03-08 18:20:02,532 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:20:02" (1/1) ... [2025-03-08 18:20:02,572 INFO L138 Inliner]: procedures = 670, calls = 2270, calls flagged for inlining = 57, calls inlined = 5, statements flattened = 373 [2025-03-08 18:20:02,572 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 18:20:02,573 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 18:20:02,573 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 18:20:02,573 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 18:20:02,579 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:20:02" (1/1) ... [2025-03-08 18:20:02,579 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:20:02" (1/1) ... [2025-03-08 18:20:02,583 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:20:02" (1/1) ... [2025-03-08 18:20:02,604 INFO L175 MemorySlicer]: Split 278 memory accesses to 4 slices as follows [2, 259, 12, 5]. 93 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]. [2025-03-08 18:20:02,604 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:20:02" (1/1) ... [2025-03-08 18:20:02,605 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:20:02" (1/1) ... [2025-03-08 18:20:02,623 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:20:02" (1/1) ... [2025-03-08 18:20:02,628 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:20:02" (1/1) ... [2025-03-08 18:20:02,631 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:20:02" (1/1) ... [2025-03-08 18:20:02,633 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:20:02" (1/1) ... [2025-03-08 18:20:02,640 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 18:20:02,642 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 18:20:02,645 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 18:20:02,645 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 18:20:02,646 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:20:02" (1/1) ... [2025-03-08 18:20:02,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 18:20:02,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 18:20:02,675 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 18:20:02,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 18:20:02,696 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2025-03-08 18:20:02,696 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2025-03-08 18:20:02,696 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq_ignore_case [2025-03-08 18:20:02,697 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq_ignore_case [2025-03-08 18:20:02,697 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_string_is_allocated_bounded_length [2025-03-08 18:20:02,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_string_is_allocated_bounded_length [2025-03-08 18:20:02,697 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2025-03-08 18:20:02,697 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2025-03-08 18:20:02,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2025-03-08 18:20:02,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2025-03-08 18:20:02,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2025-03-08 18:20:02,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2025-03-08 18:20:02,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-08 18:20:02,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-08 18:20:02,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-08 18:20:02,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-08 18:20:02,698 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-08 18:20:02,698 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-08 18:20:02,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-08 18:20:02,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 18:20:02,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-08 18:20:02,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-08 18:20:02,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-08 18:20:02,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-03-08 18:20:02,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 18:20:02,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 18:20:02,699 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2025-03-08 18:20:02,699 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2025-03-08 18:20:02,700 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-08 18:20:02,700 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-08 18:20:02,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-03-08 18:20:02,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-03-08 18:20:02,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-03-08 18:20:02,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-03-08 18:20:02,700 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2025-03-08 18:20:02,700 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2025-03-08 18:20:02,700 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2025-03-08 18:20:02,700 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2025-03-08 18:20:02,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-08 18:20:02,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-08 18:20:02,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-08 18:20:02,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-08 18:20:02,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 18:20:02,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-08 18:20:02,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-08 18:20:02,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-08 18:20:02,905 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 18:20:02,907 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 18:20:02,928 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L6875: havoc #t~malloc557.base, #t~malloc557.offset; [2025-03-08 18:20:02,937 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L261: havoc #t~nondet4; [2025-03-08 18:20:02,951 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L6245: havoc #t~mem472;havoc #t~short473;havoc #t~mem474;havoc #t~mem475;havoc #t~short476; [2025-03-08 18:20:02,954 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L266: havoc #t~nondet9; [2025-03-08 18:20:03,024 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L6792: havoc #t~ret543#1.base, #t~ret543#1.offset; [2025-03-08 18:20:08,737 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L7423: havoc aws_string_eq_ignore_case_#t~mem697#1;havoc aws_string_eq_ignore_case_#t~mem698#1;havoc aws_string_eq_ignore_case_#t~ret699#1; [2025-03-08 18:20:08,812 INFO L? ?]: Removed 67 outVars from TransFormulas that were not future-live. [2025-03-08 18:20:08,812 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 18:20:08,822 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 18:20:08,822 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 18:20:08,822 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 06:20:08 BoogieIcfgContainer [2025-03-08 18:20:08,822 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 18:20:08,824 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 18:20:08,824 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 18:20:08,827 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 18:20:08,827 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 06:20:01" (1/3) ... [2025-03-08 18:20:08,827 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44269ec2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 06:20:08, skipping insertion in model container [2025-03-08 18:20:08,827 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:20:02" (2/3) ... [2025-03-08 18:20:08,828 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44269ec2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 06:20:08, skipping insertion in model container [2025-03-08 18:20:08,828 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 06:20:08" (3/3) ... [2025-03-08 18:20:08,828 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_string_eq_ignore_case_harness_negated.i [2025-03-08 18:20:08,838 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 18:20:08,841 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_string_eq_ignore_case_harness_negated.i that has 10 procedures, 96 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 18:20:08,876 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 18:20:08,884 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;@536dc389, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 18:20:08,884 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 18:20:08,888 INFO L276 IsEmpty]: Start isEmpty. Operand has 96 states, 62 states have (on average 1.2580645161290323) internal successors, (78), 63 states have internal predecessors, (78), 23 states have call successors, (23), 9 states have call predecessors, (23), 9 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2025-03-08 18:20:08,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2025-03-08 18:20:08,894 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 18:20:08,895 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 18:20:08,895 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 18:20:08,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 18:20:08,899 INFO L85 PathProgramCache]: Analyzing trace with hash 831394450, now seen corresponding path program 1 times [2025-03-08 18:20:08,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 18:20:08,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922855825] [2025-03-08 18:20:08,904 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 18:20:08,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 18:20:51,791 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-03-08 18:20:52,190 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-03-08 18:20:52,191 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 18:20:52,191 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 18:20:52,615 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-03-08 18:20:52,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 18:20:52,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922855825] [2025-03-08 18:20:52,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922855825] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 18:20:52,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81564285] [2025-03-08 18:20:52,619 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 18:20:52,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 18:20:52,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 18:20:52,621 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 18:20:52,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 18:21:37,072 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-03-08 18:21:37,523 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-03-08 18:21:37,524 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 18:21:37,524 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 18:21:37,543 INFO L256 TraceCheckSpWp]: Trace formula consists of 3776 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-08 18:21:37,552 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 18:21:37,561 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-03-08 18:21:37,562 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 18:21:37,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81564285] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 18:21:37,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 18:21:37,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-08 18:21:37,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147195230] [2025-03-08 18:21:37,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 18:21:37,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 18:21:37,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 18:21:37,580 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 18:21:37,581 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 18:21:37,582 INFO L87 Difference]: Start difference. First operand has 96 states, 62 states have (on average 1.2580645161290323) internal successors, (78), 63 states have internal predecessors, (78), 23 states have call successors, (23), 9 states have call predecessors, (23), 9 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2025-03-08 18:21:37,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 18:21:37,606 INFO L93 Difference]: Finished difference Result 187 states and 253 transitions. [2025-03-08 18:21:37,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 18:21:37,608 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 48 [2025-03-08 18:21:37,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 18:21:37,613 INFO L225 Difference]: With dead ends: 187 [2025-03-08 18:21:37,613 INFO L226 Difference]: Without dead ends: 91 [2025-03-08 18:21:37,615 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 18:21:37,620 INFO L435 NwaCegarLoop]: 122 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, 122 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 18:21:37,621 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 18:21:37,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2025-03-08 18:21:37,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2025-03-08 18:21:37,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 58 states have (on average 1.2241379310344827) internal successors, (71), 59 states have internal predecessors, (71), 23 states have call successors, (23), 9 states have call predecessors, (23), 9 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2025-03-08 18:21:37,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 116 transitions. [2025-03-08 18:21:37,655 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 116 transitions. Word has length 48 [2025-03-08 18:21:37,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 18:21:37,656 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 116 transitions. [2025-03-08 18:21:37,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2025-03-08 18:21:37,656 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 116 transitions. [2025-03-08 18:21:37,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2025-03-08 18:21:37,658 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 18:21:37,658 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 18:21:37,673 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-08 18:21:37,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-08 18:21:37,859 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 18:21:37,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 18:21:37,859 INFO L85 PathProgramCache]: Analyzing trace with hash 17942386, now seen corresponding path program 1 times [2025-03-08 18:21:37,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 18:21:37,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901761394] [2025-03-08 18:21:37,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 18:21:37,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms