./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 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_c_str_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 b64b813c3d856efe8cd859d380d09d4b682c371a0a165a5a5fe0d11dc206dad7 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 18:18:52,240 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 18:18:52,296 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-03-08 18:18:52,299 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 18:18:52,300 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 18:18:52,321 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 18:18:52,322 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 18:18:52,322 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 18:18:52,323 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 18:18:52,323 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 18:18:52,324 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 18:18:52,324 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 18:18:52,324 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 18:18:52,324 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 18:18:52,324 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 18:18:52,325 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 18:18:52,325 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 18:18:52,325 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 18:18:52,325 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 18:18:52,325 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 18:18:52,325 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 18:18:52,326 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 18:18:52,326 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 18:18:52,326 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 18:18:52,326 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 18:18:52,326 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 18:18:52,326 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 18:18:52,326 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 18:18:52,326 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 18:18:52,326 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 18:18:52,327 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 18:18:52,327 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 18:18:52,327 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 18:18:52,327 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 18:18:52,327 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 18:18:52,327 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 18:18:52,327 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 18:18:52,327 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 18:18:52,327 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 18:18:52,327 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 18:18:52,327 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 -> b64b813c3d856efe8cd859d380d09d4b682c371a0a165a5a5fe0d11dc206dad7 [2025-03-08 18:18:52,534 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 18:18:52,539 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 18:18:52,543 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 18:18:52,544 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 18:18:52,545 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 18:18:52,545 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_harness.i [2025-03-08 18:18:53,677 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0813c1368/adb486f1484c40dd95bc1f62354e265c/FLAG28e196aa0 [2025-03-08 18:18:54,114 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 18:18:54,115 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_harness.i [2025-03-08 18:18:54,156 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0813c1368/adb486f1484c40dd95bc1f62354e265c/FLAG28e196aa0 [2025-03-08 18:18:54,254 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0813c1368/adb486f1484c40dd95bc1f62354e265c [2025-03-08 18:18:54,257 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 18:18:54,259 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 18:18:54,260 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 18:18:54,260 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 18:18:54,264 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 18:18:54,265 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 06:18:54" (1/1) ... [2025-03-08 18:18:54,267 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@403ee115 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:18:54, skipping insertion in model container [2025-03-08 18:18:54,267 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 06:18:54" (1/1) ... [2025-03-08 18:18:54,343 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 18:18:54,525 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_c_str_harness.i[4493,4506] [2025-03-08 18:18:54,531 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_c_str_harness.i[4553,4566] [2025-03-08 18:18:54,992 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:18:54,992 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:18:54,992 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:18:54,995 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:18:54,995 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:18:55,003 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:18:55,004 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:18:55,005 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:18:55,005 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:18:55,424 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:18:55,427 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:18:55,453 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 18:18:55,517 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 18:18:55,530 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_c_str_harness.i[4493,4506] [2025-03-08 18:18:55,530 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_c_str_harness.i[4553,4566] [2025-03-08 18:18:55,566 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:18:55,567 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:18:55,567 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:18:55,568 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:18:55,568 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:18:55,576 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:18:55,578 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:18:55,578 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:18:55,580 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:18:55,675 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8588] [2025-03-08 18:18:55,676 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:18:55,676 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:18:55,689 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 18:18:55,874 INFO L204 MainTranslator]: Completed translation [2025-03-08 18:18:55,874 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:18:55 WrapperNode [2025-03-08 18:18:55,875 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 18:18:55,876 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 18:18:55,876 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 18:18:55,876 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 18:18:55,881 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:18:55" (1/1) ... [2025-03-08 18:18:55,961 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:18:55" (1/1) ... [2025-03-08 18:18:56,000 INFO L138 Inliner]: procedures = 670, calls = 2270, calls flagged for inlining = 60, calls inlined = 8, statements flattened = 396 [2025-03-08 18:18:56,001 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 18:18:56,001 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 18:18:56,002 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 18:18:56,002 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 18:18:56,012 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:18:55" (1/1) ... [2025-03-08 18:18:56,012 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:18:55" (1/1) ... [2025-03-08 18:18:56,018 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:18:55" (1/1) ... [2025-03-08 18:18:56,038 INFO L175 MemorySlicer]: Split 279 memory accesses to 4 slices as follows [2, 5, 15, 257]. 92 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0, 0]. The 260 writes are split as follows [0, 0, 3, 257]. [2025-03-08 18:18:56,038 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:18:55" (1/1) ... [2025-03-08 18:18:56,038 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:18:55" (1/1) ... [2025-03-08 18:18:56,057 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:18:55" (1/1) ... [2025-03-08 18:18:56,059 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:18:55" (1/1) ... [2025-03-08 18:18:56,063 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:18:55" (1/1) ... [2025-03-08 18:18:56,064 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:18:55" (1/1) ... [2025-03-08 18:18:56,072 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 18:18:56,075 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 18:18:56,075 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 18:18:56,075 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 18:18:56,076 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:18:55" (1/1) ... [2025-03-08 18:18:56,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 18:18:56,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 18:18:56,113 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 18:18:56,116 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 18:18:56,133 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq_c_str [2025-03-08 18:18:56,133 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq_c_str [2025-03-08 18:18:56,134 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2025-03-08 18:18:56,134 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2025-03-08 18:18:56,134 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_string_is_allocated_bounded_length [2025-03-08 18:18:56,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_string_is_allocated_bounded_length [2025-03-08 18:18:56,135 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2025-03-08 18:18:56,135 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2025-03-08 18:18:56,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2025-03-08 18:18:56,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2025-03-08 18:18:56,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2025-03-08 18:18:56,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2025-03-08 18:18:56,136 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-08 18:18:56,136 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-08 18:18:56,136 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-08 18:18:56,136 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-08 18:18:56,136 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-08 18:18:56,136 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-08 18:18:56,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-08 18:18:56,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 18:18:56,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-08 18:18:56,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-08 18:18:56,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-08 18:18:56,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-03-08 18:18:56,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 18:18:56,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 18:18:56,136 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2025-03-08 18:18:56,136 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2025-03-08 18:18:56,136 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-08 18:18:56,136 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-08 18:18:56,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-03-08 18:18:56,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-03-08 18:18:56,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-03-08 18:18:56,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-03-08 18:18:56,136 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2025-03-08 18:18:56,136 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2025-03-08 18:18:56,136 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2025-03-08 18:18:56,136 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2025-03-08 18:18:56,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-08 18:18:56,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-08 18:18:56,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-08 18:18:56,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-08 18:18:56,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 18:18:56,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-08 18:18:56,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-08 18:18:56,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-08 18:18:56,336 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 18:18:56,339 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 18:18:56,375 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L6887: havoc #t~malloc557.base, #t~malloc557.offset; [2025-03-08 18:18:56,385 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L261: havoc #t~nondet4; [2025-03-08 18:18:56,439 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L8110: havoc #t~mem921; [2025-03-08 18:18:56,457 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L6257: havoc #t~mem472;havoc #t~short473;havoc #t~mem474;havoc #t~mem475;havoc #t~short476; [2025-03-08 18:18:56,460 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L266: havoc #t~nondet9; [2025-03-08 18:18:56,484 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L6804: havoc #t~ret543#1.base, #t~ret543#1.offset; [2025-03-08 18:19:02,394 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L7598: havoc aws_string_eq_c_str_#t~mem734#1;havoc aws_string_eq_c_str_#t~ret735#1; [2025-03-08 18:19:02,470 INFO L? ?]: Removed 92 outVars from TransFormulas that were not future-live. [2025-03-08 18:19:02,470 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 18:19:02,476 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 18:19:02,477 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 18:19:02,477 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 06:19:02 BoogieIcfgContainer [2025-03-08 18:19:02,477 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 18:19:02,479 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 18:19:02,479 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 18:19:02,482 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 18:19:02,482 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 06:18:54" (1/3) ... [2025-03-08 18:19:02,484 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54d96fd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 06:19:02, skipping insertion in model container [2025-03-08 18:19:02,484 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:18:55" (2/3) ... [2025-03-08 18:19:02,485 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54d96fd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 06:19:02, skipping insertion in model container [2025-03-08 18:19:02,485 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 06:19:02" (3/3) ... [2025-03-08 18:19:02,486 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_string_eq_c_str_harness.i [2025-03-08 18:19:02,497 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 18:19:02,498 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. [2025-03-08 18:19:02,534 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 18:19:02,541 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;@f3ffd81, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 18:19:02,541 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 18:19:02,547 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) [2025-03-08 18:19:02,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-03-08 18:19:02,551 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 18:19:02,552 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] [2025-03-08 18:19:02,552 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 18:19:02,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 18:19:02,555 INFO L85 PathProgramCache]: Analyzing trace with hash 2002151288, now seen corresponding path program 1 times [2025-03-08 18:19:02,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 18:19:02,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914134631] [2025-03-08 18:19:02,560 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 18:19:02,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 18:19:47,038 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-03-08 18:19:47,354 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-03-08 18:19:47,354 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 18:19:47,354 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 18:19:47,757 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-08 18:19:47,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 18:19:47,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914134631] [2025-03-08 18:19:47,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914134631] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 18:19:47,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 18:19:47,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 18:19:47,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455845129] [2025-03-08 18:19:47,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 18:19:47,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 18:19:47,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 18:19:47,773 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 18:19:47,773 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 18:19:47,775 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) [2025-03-08 18:19:47,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 18:19:47,791 INFO L93 Difference]: Finished difference Result 201 states and 275 transitions. [2025-03-08 18:19:47,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 18:19:47,792 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 [2025-03-08 18:19:47,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 18:19:47,796 INFO L225 Difference]: With dead ends: 201 [2025-03-08 18:19:47,796 INFO L226 Difference]: Without dead ends: 99 [2025-03-08 18:19:47,799 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 [2025-03-08 18:19:47,801 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 [2025-03-08 18:19:47,802 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] [2025-03-08 18:19:47,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2025-03-08 18:19:47,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2025-03-08 18:19:47,824 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) [2025-03-08 18:19:47,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 126 transitions. [2025-03-08 18:19:47,829 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 126 transitions. Word has length 36 [2025-03-08 18:19:47,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 18:19:47,830 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 126 transitions. [2025-03-08 18:19:47,830 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) [2025-03-08 18:19:47,830 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 126 transitions. [2025-03-08 18:19:47,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-03-08 18:19:47,832 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 18:19:47,833 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] [2025-03-08 18:19:47,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 18:19:47,835 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 18:19:47,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 18:19:47,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1157679417, now seen corresponding path program 1 times [2025-03-08 18:19:47,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 18:19:47,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344616977] [2025-03-08 18:19:47,836 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 18:19:47,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 18:20:32,129 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-03-08 18:20:32,263 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-03-08 18:20:32,263 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 18:20:32,263 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 18:20:33,381 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-08 18:20:33,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 18:20:33,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344616977] [2025-03-08 18:20:33,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344616977] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 18:20:33,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 18:20:33,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 18:20:33,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214098662] [2025-03-08 18:20:33,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 18:20:33,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 18:20:33,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 18:20:33,384 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 18:20:33,385 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 18:20:33,385 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) [2025-03-08 18:20:33,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 18:20:33,535 INFO L93 Difference]: Finished difference Result 157 states and 201 transitions. [2025-03-08 18:20:33,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 18:20:33,537 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 [2025-03-08 18:20:33,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 18:20:33,538 INFO L225 Difference]: With dead ends: 157 [2025-03-08 18:20:33,538 INFO L226 Difference]: Without dead ends: 99 [2025-03-08 18:20:33,539 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 [2025-03-08 18:20:33,539 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 [2025-03-08 18:20:33,539 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] [2025-03-08 18:20:33,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2025-03-08 18:20:33,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2025-03-08 18:20:33,546 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) [2025-03-08 18:20:33,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 125 transitions. [2025-03-08 18:20:33,548 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 125 transitions. Word has length 36 [2025-03-08 18:20:33,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 18:20:33,548 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 125 transitions. [2025-03-08 18:20:33,549 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) [2025-03-08 18:20:33,549 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 125 transitions. [2025-03-08 18:20:33,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-03-08 18:20:33,550 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 18:20:33,550 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] [2025-03-08 18:20:33,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 18:20:33,551 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 18:20:33,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 18:20:33,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1963842194, now seen corresponding path program 1 times [2025-03-08 18:20:33,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 18:20:33,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123784892] [2025-03-08 18:20:33,552 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 18:20:33,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms