./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_string_compare_harness.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_compare_harness.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 66fb9bfec5c458b51d86deb6748dd65f162e7ac6a772af5f3fec59d101a18d8d --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 18:17:23,144 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 18:17:23,185 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-03-08 18:17:23,189 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 18:17:23,189 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 18:17:23,203 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 18:17:23,203 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 18:17:23,203 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 18:17:23,204 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 18:17:23,204 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 18:17:23,204 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 18:17:23,204 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 18:17:23,204 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 18:17:23,204 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 18:17:23,204 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 18:17:23,204 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 18:17:23,205 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 18:17:23,205 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 18:17:23,205 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 18:17:23,205 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 18:17:23,205 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 18:17:23,205 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 18:17:23,205 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 18:17:23,205 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 18:17:23,205 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 18:17:23,205 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 18:17:23,206 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 18:17:23,206 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 18:17:23,206 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 18:17:23,206 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 18:17:23,206 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 18:17:23,206 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 18:17:23,206 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 18:17:23,206 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 18:17:23,206 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 18:17:23,206 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 18:17:23,207 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 18:17:23,207 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 18:17:23,207 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 18:17:23,207 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 18:17:23,207 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 -> 66fb9bfec5c458b51d86deb6748dd65f162e7ac6a772af5f3fec59d101a18d8d [2025-03-08 18:17:23,426 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 18:17:23,433 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 18:17:23,435 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 18:17:23,435 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 18:17:23,436 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 18:17:23,437 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_string_compare_harness.i [2025-03-08 18:17:24,589 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42b83387b/639ca46691c24323b18fccad7d74c828/FLAG0c7b1ec01 [2025-03-08 18:17:25,051 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 18:17:25,053 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_string_compare_harness.i [2025-03-08 18:17:25,086 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42b83387b/639ca46691c24323b18fccad7d74c828/FLAG0c7b1ec01 [2025-03-08 18:17:25,097 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42b83387b/639ca46691c24323b18fccad7d74c828 [2025-03-08 18:17:25,099 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 18:17:25,100 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 18:17:25,101 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 18:17:25,101 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 18:17:25,104 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 18:17:25,105 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 06:17:25" (1/1) ... [2025-03-08 18:17:25,105 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@377d1020 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:17:25, skipping insertion in model container [2025-03-08 18:17:25,105 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 06:17:25" (1/1) ... [2025-03-08 18:17:25,169 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 18:17:25,386 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_compare_harness.i[4492,4505] [2025-03-08 18:17:25,393 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_compare_harness.i[4552,4565] [2025-03-08 18:17:25,901 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:17:25,901 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:17:25,902 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:17:25,902 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:17:25,903 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:17:25,912 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:17:25,912 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:17:25,914 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:17:25,914 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:17:26,296 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:17:26,299 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:17:26,389 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 18:17:26,433 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 18:17:26,443 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_compare_harness.i[4492,4505] [2025-03-08 18:17:26,444 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_compare_harness.i[4552,4565] [2025-03-08 18:17:26,472 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:17:26,472 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:17:26,473 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:17:26,473 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:17:26,474 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:17:26,479 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:17:26,479 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:17:26,480 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:17:26,480 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:17:26,569 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8253] [2025-03-08 18:17:26,571 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:17:26,571 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:17:26,582 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8739-8750] [2025-03-08 18:17:26,604 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 18:17:26,778 INFO L204 MainTranslator]: Completed translation [2025-03-08 18:17:26,779 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:17:26 WrapperNode [2025-03-08 18:17:26,779 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 18:17:26,780 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 18:17:26,780 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 18:17:26,780 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 18:17:26,784 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:17:26" (1/1) ... [2025-03-08 18:17:26,842 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:17:26" (1/1) ... [2025-03-08 18:17:26,890 INFO L138 Inliner]: procedures = 682, calls = 2786, calls flagged for inlining = 57, calls inlined = 5, statements flattened = 823 [2025-03-08 18:17:26,891 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 18:17:26,893 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 18:17:26,893 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 18:17:26,893 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 18:17:26,899 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:17:26" (1/1) ... [2025-03-08 18:17:26,900 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:17:26" (1/1) ... [2025-03-08 18:17:26,905 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:17:26" (1/1) ... [2025-03-08 18:17:26,958 INFO L175 MemorySlicer]: Split 529 memory accesses to 6 slices as follows [2, 5, 11, 257, 238, 16]. 49 percent of accesses are in the largest equivalence class. The 29 initializations are split as follows [2, 5, 0, 0, 6, 16]. The 492 writes are split as follows [0, 0, 3, 257, 232, 0]. [2025-03-08 18:17:26,959 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:17:26" (1/1) ... [2025-03-08 18:17:26,959 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:17:26" (1/1) ... [2025-03-08 18:17:26,995 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:17:26" (1/1) ... [2025-03-08 18:17:27,000 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:17:26" (1/1) ... [2025-03-08 18:17:27,005 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:17:26" (1/1) ... [2025-03-08 18:17:27,011 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:17:26" (1/1) ... [2025-03-08 18:17:27,023 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 18:17:27,025 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 18:17:27,026 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 18:17:27,026 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 18:17:27,026 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:17:26" (1/1) ... [2025-03-08 18:17:27,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 18:17:27,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 18:17:27,055 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 18:17:27,059 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 18:17:27,075 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2025-03-08 18:17:27,075 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2025-03-08 18:17:27,076 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_compare [2025-03-08 18:17:27,076 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_compare [2025-03-08 18:17:27,076 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_string_is_allocated_bounded_length [2025-03-08 18:17:27,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_string_is_allocated_bounded_length [2025-03-08 18:17:27,076 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2025-03-08 18:17:27,076 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2025-03-08 18:17:27,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2025-03-08 18:17:27,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2025-03-08 18:17:27,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2025-03-08 18:17:27,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2025-03-08 18:17:27,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2025-03-08 18:17:27,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2025-03-08 18:17:27,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-08 18:17:27,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-08 18:17:27,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-08 18:17:27,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-08 18:17:27,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-08 18:17:27,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-03-08 18:17:27,078 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-08 18:17:27,078 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-08 18:17:27,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-08 18:17:27,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 18:17:27,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-08 18:17:27,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-08 18:17:27,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-08 18:17:27,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-03-08 18:17:27,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2025-03-08 18:17:27,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2025-03-08 18:17:27,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 18:17:27,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 18:17:27,078 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2025-03-08 18:17:27,078 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2025-03-08 18:17:27,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2025-03-08 18:17:27,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2025-03-08 18:17:27,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2025-03-08 18:17:27,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2025-03-08 18:17:27,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2025-03-08 18:17:27,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2025-03-08 18:17:27,078 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_bytes [2025-03-08 18:17:27,078 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_bytes [2025-03-08 18:17:27,078 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-08 18:17:27,078 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-08 18:17:27,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-03-08 18:17:27,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-03-08 18:17:27,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-03-08 18:17:27,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-03-08 18:17:27,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2025-03-08 18:17:27,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2025-03-08 18:17:27,079 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2025-03-08 18:17:27,079 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2025-03-08 18:17:27,080 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2025-03-08 18:17:27,080 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2025-03-08 18:17:27,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-08 18:17:27,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-08 18:17:27,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-08 18:17:27,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-08 18:17:27,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-08 18:17:27,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-03-08 18:17:27,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 18:17:27,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-08 18:17:27,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-08 18:17:27,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-08 18:17:27,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-08 18:17:27,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-08 18:17:27,307 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 18:17:27,308 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 18:17:27,333 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L6886: havoc #t~malloc557.base, #t~malloc557.offset; [2025-03-08 18:17:27,353 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L6256: havoc #t~mem472;havoc #t~short473;havoc #t~mem474;havoc #t~mem475;havoc #t~short476; [2025-03-08 18:17:27,354 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L266: havoc #t~nondet9; [2025-03-08 18:17:27,362 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L261: havoc #t~nondet4; [2025-03-08 18:17:27,440 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L6803: havoc #t~ret543#1.base, #t~ret543#1.offset; [2025-03-08 18:17:34,319 INFO L? ?]: Removed 81 outVars from TransFormulas that were not future-live. [2025-03-08 18:17:34,319 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 18:17:34,328 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 18:17:34,329 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 18:17:34,330 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 06:17:34 BoogieIcfgContainer [2025-03-08 18:17:34,331 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 18:17:34,333 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 18:17:34,333 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 18:17:34,337 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 18:17:34,337 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 06:17:25" (1/3) ... [2025-03-08 18:17:34,338 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a6da2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 06:17:34, skipping insertion in model container [2025-03-08 18:17:34,338 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:17:26" (2/3) ... [2025-03-08 18:17:34,338 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a6da2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 06:17:34, skipping insertion in model container [2025-03-08 18:17:34,338 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 06:17:34" (3/3) ... [2025-03-08 18:17:34,339 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_string_compare_harness.i [2025-03-08 18:17:34,350 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 18:17:34,354 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_string_compare_harness.i that has 11 procedures, 121 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-03-08 18:17:34,389 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 18:17:34,396 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;@278cc385, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 18:17:34,397 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 18:17:34,399 INFO L276 IsEmpty]: Start isEmpty. Operand has 121 states, 76 states have (on average 1.2763157894736843) internal successors, (97), 77 states have internal predecessors, (97), 33 states have call successors, (33), 10 states have call predecessors, (33), 10 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2025-03-08 18:17:34,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-03-08 18:17:34,405 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 18:17:34,405 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 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 18:17:34,405 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 18:17:34,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 18:17:34,411 INFO L85 PathProgramCache]: Analyzing trace with hash -928018743, now seen corresponding path program 1 times [2025-03-08 18:17:34,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 18:17:34,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362680081] [2025-03-08 18:17:34,416 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 18:17:34,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 18:18:38,492 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-03-08 18:18:39,027 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-03-08 18:18:39,027 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 18:18:39,027 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 18:18:39,740 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-03-08 18:18:39,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 18:18:39,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362680081] [2025-03-08 18:18:39,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362680081] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 18:18:39,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986675126] [2025-03-08 18:18:39,742 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 18:18:39,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 18:18:39,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 18:18:39,744 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 18:18:39,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process