./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_string_bytes_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_bytes_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 3a8d46e4c372901c9f89e699afc459289c693eafeb857e561ae47d4325b43f1e --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 18:17:18,175 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 18:17:18,226 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-03-08 18:17:18,231 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 18:17:18,231 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 18:17:18,247 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 18:17:18,248 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 18:17:18,248 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 18:17:18,248 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 18:17:18,248 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 18:17:18,249 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 18:17:18,249 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 18:17:18,249 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 18:17:18,249 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 18:17:18,249 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 18:17:18,250 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 18:17:18,250 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 18:17:18,250 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 18:17:18,250 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 18:17:18,250 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 18:17:18,250 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 18:17:18,251 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 18:17:18,251 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 18:17:18,251 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 18:17:18,251 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 18:17:18,251 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 18:17:18,252 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 18:17:18,252 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 18:17:18,252 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 18:17:18,252 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 18:17:18,252 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 18:17:18,252 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 18:17:18,252 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 18:17:18,252 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 18:17:18,252 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 18:17:18,253 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 18:17:18,253 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 18:17:18,253 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 18:17:18,253 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 18:17:18,253 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 18:17:18,253 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 -> 3a8d46e4c372901c9f89e699afc459289c693eafeb857e561ae47d4325b43f1e [2025-03-08 18:17:18,476 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 18:17:18,484 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 18:17:18,486 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 18:17:18,487 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 18:17:18,487 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 18:17:18,489 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_string_bytes_harness.i [2025-03-08 18:17:19,623 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/320c36542/9f45225d867c4436aee398008181ad6e/FLAGdda350be7 [2025-03-08 18:17:19,991 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 18:17:19,992 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_string_bytes_harness.i [2025-03-08 18:17:20,013 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/320c36542/9f45225d867c4436aee398008181ad6e/FLAGdda350be7 [2025-03-08 18:17:20,025 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/320c36542/9f45225d867c4436aee398008181ad6e [2025-03-08 18:17:20,027 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 18:17:20,028 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 18:17:20,029 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 18:17:20,029 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 18:17:20,031 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 18:17:20,032 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 06:17:20" (1/1) ... [2025-03-08 18:17:20,032 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c1344bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:17:20, skipping insertion in model container [2025-03-08 18:17:20,032 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 06:17:20" (1/1) ... [2025-03-08 18:17:20,094 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 18:17:20,242 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_bytes_harness.i[4490,4503] [2025-03-08 18:17:20,248 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_bytes_harness.i[4550,4563] [2025-03-08 18:17:20,609 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:17:20,610 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:17:20,610 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:17:20,611 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:17:20,611 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:17:20,620 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:17:20,621 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:17:20,622 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:17:20,622 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:17:20,624 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:17:20,624 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:17:20,625 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:17:20,626 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:17:20,894 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_bytes_harness.i[147449,147462] [2025-03-08 18:17:20,895 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 18:17:20,905 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 18:17:20,915 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_bytes_harness.i[4490,4503] [2025-03-08 18:17:20,915 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_bytes_harness.i[4550,4563] [2025-03-08 18:17:20,958 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:17:20,958 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:17:20,958 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:17:20,958 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:17:20,959 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:17:20,966 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:17:20,968 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:17:20,968 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:17:20,968 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:17:20,969 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:17:20,969 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:17:20,970 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:17:20,970 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:17:21,040 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_bytes_harness.i[147449,147462] [2025-03-08 18:17:21,043 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 18:17:21,166 INFO L204 MainTranslator]: Completed translation [2025-03-08 18:17:21,166 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:17:21 WrapperNode [2025-03-08 18:17:21,166 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 18:17:21,167 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 18:17:21,167 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 18:17:21,167 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 18:17:21,171 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:17:21" (1/1) ... [2025-03-08 18:17:21,203 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:17:21" (1/1) ... [2025-03-08 18:17:21,228 INFO L138 Inliner]: procedures = 668, calls = 972, calls flagged for inlining = 46, calls inlined = 6, statements flattened = 61 [2025-03-08 18:17:21,230 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 18:17:21,230 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 18:17:21,231 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 18:17:21,231 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 18:17:21,237 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:17:21" (1/1) ... [2025-03-08 18:17:21,238 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:17:21" (1/1) ... [2025-03-08 18:17:21,240 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:17:21" (1/1) ... [2025-03-08 18:17:21,252 INFO L175 MemorySlicer]: Split 13 memory accesses to 3 slices as follows [2, 5, 6]. 46 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 3 writes are split as follows [0, 0, 3]. [2025-03-08 18:17:21,253 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:17:21" (1/1) ... [2025-03-08 18:17:21,253 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:17:21" (1/1) ... [2025-03-08 18:17:21,263 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:17:21" (1/1) ... [2025-03-08 18:17:21,266 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:17:21" (1/1) ... [2025-03-08 18:17:21,268 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:17:21" (1/1) ... [2025-03-08 18:17:21,268 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:17:21" (1/1) ... [2025-03-08 18:17:21,271 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 18:17:21,271 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 18:17:21,271 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 18:17:21,271 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 18:17:21,272 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:17:21" (1/1) ... [2025-03-08 18:17:21,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 18:17:21,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 18:17:21,304 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 18:17:21,305 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 18:17:21,321 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2025-03-08 18:17:21,322 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2025-03-08 18:17:21,322 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2025-03-08 18:17:21,322 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2025-03-08 18:17:21,322 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-08 18:17:21,322 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-08 18:17:21,322 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-08 18:17:21,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-08 18:17:21,322 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-08 18:17:21,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-08 18:17:21,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 18:17:21,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-08 18:17:21,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-08 18:17:21,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-08 18:17:21,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 18:17:21,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 18:17:21,322 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2025-03-08 18:17:21,322 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2025-03-08 18:17:21,322 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_bytes [2025-03-08 18:17:21,322 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_bytes [2025-03-08 18:17:21,322 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-08 18:17:21,322 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-08 18:17:21,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-03-08 18:17:21,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-03-08 18:17:21,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-03-08 18:17:21,322 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2025-03-08 18:17:21,322 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2025-03-08 18:17:21,322 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2025-03-08 18:17:21,322 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2025-03-08 18:17:21,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-08 18:17:21,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-08 18:17:21,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-08 18:17:21,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 18:17:21,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-08 18:17:21,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-08 18:17:21,486 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 18:17:21,488 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 18:17:21,520 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L6945: havoc #t~malloc583.base, #t~malloc583.offset; [2025-03-08 18:17:21,533 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L261: havoc #t~nondet4; [2025-03-08 18:17:21,557 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L6305: havoc #t~mem498;havoc #t~short499;havoc #t~mem500;havoc #t~mem501;havoc #t~short502; [2025-03-08 18:17:21,559 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L266: havoc #t~nondet9; [2025-03-08 18:17:21,616 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L6862: havoc ensure_string_is_allocated_bounded_length_#t~ret569#1.base, ensure_string_is_allocated_bounded_length_#t~ret569#1.offset; [2025-03-08 18:17:21,616 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L6854: havoc ensure_string_is_allocated_nondet_length_#t~ret567#1.base, ensure_string_is_allocated_nondet_length_#t~ret567#1.offset; [2025-03-08 18:17:21,639 INFO L? ?]: Removed 30 outVars from TransFormulas that were not future-live. [2025-03-08 18:17:21,639 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 18:17:21,647 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 18:17:21,647 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 18:17:21,647 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 06:17:21 BoogieIcfgContainer [2025-03-08 18:17:21,647 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 18:17:21,650 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 18:17:21,650 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 18:17:21,653 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 18:17:21,654 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 06:17:20" (1/3) ... [2025-03-08 18:17:21,654 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cf62656 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 06:17:21, skipping insertion in model container [2025-03-08 18:17:21,654 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:17:21" (2/3) ... [2025-03-08 18:17:21,654 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cf62656 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 06:17:21, skipping insertion in model container [2025-03-08 18:17:21,654 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 06:17:21" (3/3) ... [2025-03-08 18:17:21,656 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_string_bytes_harness.i [2025-03-08 18:17:21,666 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 18:17:21,668 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_string_bytes_harness.i that has 9 procedures, 63 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-03-08 18:17:21,726 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 18:17:21,737 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;@54e0df99, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 18:17:21,737 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 18:17:21,740 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 41 states have (on average 1.146341463414634) internal successors, (47), 42 states have internal predecessors, (47), 12 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-08 18:17:21,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2025-03-08 18:17:21,745 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 18:17:21,746 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-08 18:17:21,746 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 18:17:21,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 18:17:21,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1798088701, now seen corresponding path program 1 times [2025-03-08 18:17:21,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 18:17:21,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39613751] [2025-03-08 18:17:21,757 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 18:17:21,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 18:17:21,869 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-03-08 18:17:21,890 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-03-08 18:17:21,891 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 18:17:21,891 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 18:17:22,045 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-08 18:17:22,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 18:17:22,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39613751] [2025-03-08 18:17:22,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39613751] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 18:17:22,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875873477] [2025-03-08 18:17:22,047 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 18:17:22,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 18:17:22,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 18:17:22,050 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 18:17:22,052 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 18:17:22,152 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-03-08 18:17:22,203 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-03-08 18:17:22,204 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 18:17:22,204 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 18:17:22,206 INFO L256 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-08 18:17:22,211 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 18:17:22,226 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-08 18:17:22,227 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 18:17:22,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875873477] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 18:17:22,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 18:17:22,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-08 18:17:22,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762516359] [2025-03-08 18:17:22,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 18:17:22,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 18:17:22,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 18:17:22,245 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 18:17:22,245 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 18:17:22,247 INFO L87 Difference]: Start difference. First operand has 63 states, 41 states have (on average 1.146341463414634) internal successors, (47), 42 states have internal predecessors, (47), 12 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-08 18:17:22,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 18:17:22,260 INFO L93 Difference]: Finished difference Result 118 states and 140 transitions. [2025-03-08 18:17:22,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 18:17:22,262 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 55 [2025-03-08 18:17:22,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 18:17:22,265 INFO L225 Difference]: With dead ends: 118 [2025-03-08 18:17:22,266 INFO L226 Difference]: Without dead ends: 58 [2025-03-08 18:17:22,267 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 56 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 18:17:22,269 INFO L435 NwaCegarLoop]: 69 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, 69 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 18:17:22,270 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 18:17:22,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2025-03-08 18:17:22,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2025-03-08 18:17:22,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 37 states have (on average 1.1081081081081081) internal successors, (41), 38 states have internal predecessors, (41), 12 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2025-03-08 18:17:22,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 64 transitions. [2025-03-08 18:17:22,297 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 64 transitions. Word has length 55 [2025-03-08 18:17:22,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 18:17:22,297 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 64 transitions. [2025-03-08 18:17:22,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-08 18:17:22,297 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 64 transitions. [2025-03-08 18:17:22,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2025-03-08 18:17:22,299 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 18:17:22,299 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-08 18:17:22,308 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 18:17:22,500 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 18:17:22,501 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 18:17:22,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 18:17:22,501 INFO L85 PathProgramCache]: Analyzing trace with hash 2051031898, now seen corresponding path program 1 times [2025-03-08 18:17:22,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 18:17:22,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336594285] [2025-03-08 18:17:22,501 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 18:17:22,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 18:17:22,535 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-03-08 18:17:22,578 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-03-08 18:17:22,578 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 18:17:22,578 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 18:17:23,342 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-08 18:17:23,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 18:17:23,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336594285] [2025-03-08 18:17:23,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336594285] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 18:17:23,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 18:17:23,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-03-08 18:17:23,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349716962] [2025-03-08 18:17:23,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 18:17:23,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-08 18:17:23,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 18:17:23,345 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-08 18:17:23,346 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2025-03-08 18:17:23,347 INFO L87 Difference]: Start difference. First operand 58 states and 64 transitions. Second operand has 14 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 5 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2025-03-08 18:17:23,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 18:17:23,477 INFO L93 Difference]: Finished difference Result 64 states and 69 transitions. [2025-03-08 18:17:23,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-08 18:17:23,477 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 5 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 55 [2025-03-08 18:17:23,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 18:17:23,478 INFO L225 Difference]: With dead ends: 64 [2025-03-08 18:17:23,478 INFO L226 Difference]: Without dead ends: 60 [2025-03-08 18:17:23,479 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2025-03-08 18:17:23,479 INFO L435 NwaCegarLoop]: 54 mSDtfsCounter, 6 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 18:17:23,479 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 672 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 18:17:23,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2025-03-08 18:17:23,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2025-03-08 18:17:23,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 39 states have internal predecessors, (42), 12 states have call successors, (12), 9 states have call predecessors, (12), 8 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2025-03-08 18:17:23,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 65 transitions. [2025-03-08 18:17:23,485 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 65 transitions. Word has length 55 [2025-03-08 18:17:23,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 18:17:23,486 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 65 transitions. [2025-03-08 18:17:23,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 5 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2025-03-08 18:17:23,486 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 65 transitions. [2025-03-08 18:17:23,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-03-08 18:17:23,487 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 18:17:23,487 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 18:17:23,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 18:17:23,487 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 18:17:23,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 18:17:23,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1423287623, now seen corresponding path program 1 times [2025-03-08 18:17:23,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 18:17:23,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134531843] [2025-03-08 18:17:23,488 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 18:17:23,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 18:17:23,511 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-03-08 18:17:23,645 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-03-08 18:17:23,646 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 18:17:23,646 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 18:17:26,474 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-08 18:17:26,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 18:17:26,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134531843] [2025-03-08 18:17:26,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134531843] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 18:17:26,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800947941] [2025-03-08 18:17:26,475 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 18:17:26,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 18:17:26,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 18:17:26,477 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 18:17:26,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 18:17:26,559 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-03-08 18:17:26,605 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-03-08 18:17:26,605 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 18:17:26,605 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 18:17:26,608 INFO L256 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 83 conjuncts are in the unsatisfiable core [2025-03-08 18:17:26,614 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 18:17:26,719 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-03-08 18:17:28,724 INFO L349 Elim1Store]: treesize reduction 168, result has 24.0 percent of original size [2025-03-08 18:17:28,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 11 new quantified variables, introduced 21 case distinctions, treesize of input 220 treesize of output 180 [2025-03-08 18:17:29,266 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-08 18:17:29,266 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 18:17:31,504 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-03-08 18:17:31,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800947941] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 18:17:31,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 18:17:31,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 25, 17] total 57 [2025-03-08 18:17:31,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676828306] [2025-03-08 18:17:31,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 18:17:31,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2025-03-08 18:17:31,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 18:17:31,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2025-03-08 18:17:31,507 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=3020, Unknown=0, NotChecked=0, Total=3192 [2025-03-08 18:17:31,507 INFO L87 Difference]: Start difference. First operand 60 states and 65 transitions. Second operand has 57 states, 47 states have (on average 2.1914893617021276) internal successors, (103), 46 states have internal predecessors, (103), 17 states have call successors, (28), 4 states have call predecessors, (28), 13 states have return successors, (27), 17 states have call predecessors, (27), 14 states have call successors, (27) [2025-03-08 18:17:34,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 18:17:34,056 INFO L93 Difference]: Finished difference Result 76 states and 81 transitions. [2025-03-08 18:17:34,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-03-08 18:17:34,057 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 47 states have (on average 2.1914893617021276) internal successors, (103), 46 states have internal predecessors, (103), 17 states have call successors, (28), 4 states have call predecessors, (28), 13 states have return successors, (27), 17 states have call predecessors, (27), 14 states have call successors, (27) Word has length 69 [2025-03-08 18:17:34,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 18:17:34,058 INFO L225 Difference]: With dead ends: 76 [2025-03-08 18:17:34,058 INFO L226 Difference]: Without dead ends: 71 [2025-03-08 18:17:34,060 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 112 SyntacticMatches, 4 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1079 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=316, Invalid=5536, Unknown=0, NotChecked=0, Total=5852 [2025-03-08 18:17:34,060 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 46 mSDsluCounter, 1305 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 1349 SdHoareTripleChecker+Invalid, 1067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-08 18:17:34,061 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 1349 Invalid, 1067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1024 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-08 18:17:34,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2025-03-08 18:17:34,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 67. [2025-03-08 18:17:34,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 44 states have (on average 1.0681818181818181) internal successors, (47), 45 states have internal predecessors, (47), 12 states have call successors, (12), 10 states have call predecessors, (12), 10 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2025-03-08 18:17:34,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2025-03-08 18:17:34,069 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 69 [2025-03-08 18:17:34,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 18:17:34,069 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2025-03-08 18:17:34,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 47 states have (on average 2.1914893617021276) internal successors, (103), 46 states have internal predecessors, (103), 17 states have call successors, (28), 4 states have call predecessors, (28), 13 states have return successors, (27), 17 states have call predecessors, (27), 14 states have call successors, (27) [2025-03-08 18:17:34,069 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2025-03-08 18:17:34,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-03-08 18:17:34,070 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 18:17:34,070 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 18:17:34,077 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-08 18:17:34,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2025-03-08 18:17:34,271 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 18:17:34,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 18:17:34,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1128869338, now seen corresponding path program 1 times [2025-03-08 18:17:34,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 18:17:34,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119269462] [2025-03-08 18:17:34,272 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 18:17:34,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 18:17:34,288 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-03-08 18:17:34,299 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-03-08 18:17:34,299 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 18:17:34,299 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 18:17:34,495 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-03-08 18:17:34,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 18:17:34,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119269462] [2025-03-08 18:17:34,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119269462] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 18:17:34,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 18:17:34,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2025-03-08 18:17:34,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443060580] [2025-03-08 18:17:34,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 18:17:34,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-08 18:17:34,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 18:17:34,496 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-08 18:17:34,496 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2025-03-08 18:17:34,497 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 12 states have internal predecessors, (42), 4 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-08 18:17:34,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 18:17:34,593 INFO L93 Difference]: Finished difference Result 72 states and 77 transitions. [2025-03-08 18:17:34,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-08 18:17:34,595 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 12 states have internal predecessors, (42), 4 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) Word has length 69 [2025-03-08 18:17:34,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 18:17:34,595 INFO L225 Difference]: With dead ends: 72 [2025-03-08 18:17:34,595 INFO L226 Difference]: Without dead ends: 0 [2025-03-08 18:17:34,596 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2025-03-08 18:17:34,596 INFO L435 NwaCegarLoop]: 54 mSDtfsCounter, 10 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 18:17:34,596 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 556 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 18:17:34,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-03-08 18:17:34,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-03-08 18:17:34,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 18:17:34,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-03-08 18:17:34,597 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 69 [2025-03-08 18:17:34,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 18:17:34,597 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-03-08 18:17:34,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 12 states have internal predecessors, (42), 4 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-08 18:17:34,597 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-03-08 18:17:34,597 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-03-08 18:17:34,601 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-03-08 18:17:34,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 18:17:34,603 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2025-03-08 18:17:34,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-03-08 18:17:59,194 WARN L286 SmtUtils]: Spent 24.46s on a formula simplification. DAG size of input: 180 DAG size of output: 92 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2025-03-08 18:18:31,814 WARN L286 SmtUtils]: Spent 32.38s on a formula simplification. DAG size of input: 136 DAG size of output: 76 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2025-03-08 18:18:31,912 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-08 18:18:31,918 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.03 06:18:31 BoogieIcfgContainer [2025-03-08 18:18:31,918 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-08 18:18:31,919 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-08 18:18:31,919 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-08 18:18:31,919 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-08 18:18:31,920 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 06:17:21" (3/4) ... [2025-03-08 18:18:31,921 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-08 18:18:31,926 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure bounded_malloc [2025-03-08 18:18:31,926 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure nondet_uint64_t [2025-03-08 18:18:31,926 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure nondet_bool [2025-03-08 18:18:31,926 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure aws_string_bytes [2025-03-08 18:18:31,926 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2025-03-08 18:18:31,926 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2025-03-08 18:18:31,926 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure can_fail_allocator [2025-03-08 18:18:31,926 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure aws_string_is_valid [2025-03-08 18:18:31,931 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2025-03-08 18:18:31,932 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-03-08 18:18:31,932 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-08 18:18:31,932 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-08 18:18:31,999 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-08 18:18:31,999 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-08 18:18:32,000 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-08 18:18:32,000 INFO L158 Benchmark]: Toolchain (without parser) took 71972.41ms. Allocated memory was 167.8MB in the beginning and 436.2MB in the end (delta: 268.4MB). Free memory was 123.2MB in the beginning and 197.3MB in the end (delta: -74.1MB). Peak memory consumption was 187.7MB. Max. memory is 16.1GB. [2025-03-08 18:18:32,001 INFO L158 Benchmark]: CDTParser took 0.66ms. Allocated memory is still 201.3MB. Free memory was 125.8MB in the beginning and 125.5MB in the end (delta: 307.6kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 18:18:32,001 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1137.94ms. Allocated memory is still 167.8MB. Free memory was 123.2MB in the beginning and 86.5MB in the end (delta: 36.7MB). Peak memory consumption was 93.8MB. Max. memory is 16.1GB. [2025-03-08 18:18:32,001 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.05ms. Allocated memory is still 167.8MB. Free memory was 86.5MB in the beginning and 81.6MB in the end (delta: 4.9MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 18:18:32,002 INFO L158 Benchmark]: Boogie Preprocessor took 40.32ms. Allocated memory is still 167.8MB. Free memory was 81.6MB in the beginning and 78.1MB in the end (delta: 3.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-08 18:18:32,002 INFO L158 Benchmark]: IcfgBuilder took 375.94ms. Allocated memory is still 167.8MB. Free memory was 78.1MB in the beginning and 58.7MB in the end (delta: 19.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-08 18:18:32,003 INFO L158 Benchmark]: TraceAbstraction took 70268.66ms. Allocated memory was 167.8MB in the beginning and 436.2MB in the end (delta: 268.4MB). Free memory was 57.9MB in the beginning and 201.4MB in the end (delta: -143.5MB). Peak memory consumption was 127.5MB. Max. memory is 16.1GB. [2025-03-08 18:18:32,003 INFO L158 Benchmark]: Witness Printer took 80.75ms. Allocated memory is still 436.2MB. Free memory was 201.4MB in the beginning and 197.3MB in the end (delta: 4.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 18:18:32,004 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.66ms. Allocated memory is still 201.3MB. Free memory was 125.8MB in the beginning and 125.5MB in the end (delta: 307.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1137.94ms. Allocated memory is still 167.8MB. Free memory was 123.2MB in the beginning and 86.5MB in the end (delta: 36.7MB). Peak memory consumption was 93.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.05ms. Allocated memory is still 167.8MB. Free memory was 86.5MB in the beginning and 81.6MB in the end (delta: 4.9MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 40.32ms. Allocated memory is still 167.8MB. Free memory was 81.6MB in the beginning and 78.1MB in the end (delta: 3.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 375.94ms. Allocated memory is still 167.8MB. Free memory was 78.1MB in the beginning and 58.7MB in the end (delta: 19.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 70268.66ms. Allocated memory was 167.8MB in the beginning and 436.2MB in the end (delta: 268.4MB). Free memory was 57.9MB in the beginning and 201.4MB in the end (delta: -143.5MB). Peak memory consumption was 127.5MB. Max. memory is 16.1GB. * Witness Printer took 80.75ms. Allocated memory is still 436.2MB. Free memory was 201.4MB in the beginning and 197.3MB in the end (delta: 4.1MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 223]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 63 locations, 83 edges, 1 error locations. Started 1 CEGAR loops. OverallTime: 12.9s, OverallIterations: 4, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 70 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 62 mSDsluCounter, 2646 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2425 mSDsCounter, 49 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1290 IncrementalHoareTripleChecker+Invalid, 1339 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 49 mSolverCounterUnsat, 221 mSDtfsCounter, 1290 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 280 GetRequests, 173 SyntacticMatches, 4 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1084 ImplicationChecksByTransitivity, 4.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=67occurred in iteration=3, InterpolantAutomatonStates: 60, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 8.9s InterpolantComputationTime, 372 NumberOfCodeBlocks, 372 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 434 ConstructedInterpolants, 20 QuantifiedInterpolants, 6027 SizeOfPredicates, 7 NumberOfNonLiveVariables, 541 ConjunctsInSsa, 84 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 102/120 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-08 18:18:32,182 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE