./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 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_string_bytes_harness.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3a8d46e4c372901c9f89e699afc459289c693eafeb857e561ae47d4325b43f1e --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 17:29:31,940 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 17:29:32,001 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-01-09 17:29:32,006 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 17:29:32,006 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 17:29:32,019 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 17:29:32,020 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 17:29:32,020 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 17:29:32,020 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 17:29:32,021 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 17:29:32,021 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 17:29:32,021 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 17:29:32,021 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 17:29:32,021 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 17:29:32,021 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 17:29:32,021 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 17:29:32,021 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 17:29:32,021 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 17:29:32,022 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 17:29:32,022 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 17:29:32,022 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 17:29:32,022 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 17:29:32,022 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 17:29:32,022 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 17:29:32,022 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 17:29:32,022 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 17:29:32,022 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 17:29:32,022 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 17:29:32,022 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 17:29:32,023 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 17:29:32,023 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 17:29:32,023 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 17:29:32,023 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 17:29:32,023 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 17:29:32,023 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 17:29:32,023 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 17:29:32,023 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 17:29:32,023 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 17:29:32,023 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 17:29:32,023 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 17:29:32,023 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 17:29:32,023 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 17:29:32,023 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 17:29:32,023 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 17:29:32,023 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 17:29:32,023 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a8d46e4c372901c9f89e699afc459289c693eafeb857e561ae47d4325b43f1e [2025-01-09 17:29:32,243 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 17:29:32,249 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 17:29:32,250 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 17:29:32,250 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 17:29:32,251 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 17:29:32,251 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_string_bytes_harness.i [2025-01-09 17:29:33,371 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ed12c0d44/b66312d5cc724fa9ae793976e0f0d02c/FLAG372496f0c [2025-01-09 17:29:33,846 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 17:29:33,847 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_string_bytes_harness.i [2025-01-09 17:29:33,881 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ed12c0d44/b66312d5cc724fa9ae793976e0f0d02c/FLAG372496f0c [2025-01-09 17:29:33,950 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ed12c0d44/b66312d5cc724fa9ae793976e0f0d02c [2025-01-09 17:29:33,952 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 17:29:33,953 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 17:29:33,956 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 17:29:33,956 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 17:29:33,959 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 17:29:33,960 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 05:29:33" (1/1) ... [2025-01-09 17:29:33,960 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c6be076 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 05:29:33, skipping insertion in model container [2025-01-09 17:29:33,961 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 05:29:33" (1/1) ... [2025-01-09 17:29:34,019 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 17:29:34,172 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_string_bytes_harness.i[4490,4503] [2025-01-09 17:29:34,178 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_string_bytes_harness.i[4550,4563] [2025-01-09 17:29:34,578 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 17:29:34,581 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 17:29:34,581 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 17:29:34,582 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 17:29:34,582 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 17:29:34,597 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 17:29:34,597 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 17:29:34,599 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 17:29:34,602 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 17:29:34,603 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 17:29:34,604 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 17:29:34,604 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 17:29:34,605 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 17:29:34,892 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_string_bytes_harness.i[147449,147462] [2025-01-09 17:29:34,893 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 17:29:34,906 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 17:29:34,921 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_string_bytes_harness.i[4490,4503] [2025-01-09 17:29:34,925 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_string_bytes_harness.i[4550,4563] [2025-01-09 17:29:34,964 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 17:29:34,964 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 17:29:34,965 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 17:29:34,965 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 17:29:34,965 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 17:29:34,971 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 17:29:34,971 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 17:29:34,972 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 17:29:34,972 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 17:29:34,973 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 17:29:34,973 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 17:29:34,974 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 17:29:34,974 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 17:29:35,055 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_string_bytes_harness.i[147449,147462] [2025-01-09 17:29:35,056 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 17:29:35,193 INFO L204 MainTranslator]: Completed translation [2025-01-09 17:29:35,194 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 05:29:35 WrapperNode [2025-01-09 17:29:35,194 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 17:29:35,195 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 17:29:35,195 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 17:29:35,195 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 17:29:35,201 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 05:29:35" (1/1) ... [2025-01-09 17:29:35,250 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 05:29:35" (1/1) ... [2025-01-09 17:29:35,268 INFO L138 Inliner]: procedures = 668, calls = 972, calls flagged for inlining = 46, calls inlined = 6, statements flattened = 61 [2025-01-09 17:29:35,268 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 17:29:35,269 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 17:29:35,269 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 17:29:35,269 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 17:29:35,275 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 05:29:35" (1/1) ... [2025-01-09 17:29:35,275 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 05:29:35" (1/1) ... [2025-01-09 17:29:35,278 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 05:29:35" (1/1) ... [2025-01-09 17:29:35,293 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]. [2025-01-09 17:29:35,296 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 05:29:35" (1/1) ... [2025-01-09 17:29:35,297 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 05:29:35" (1/1) ... [2025-01-09 17:29:35,306 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 05:29:35" (1/1) ... [2025-01-09 17:29:35,310 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 05:29:35" (1/1) ... [2025-01-09 17:29:35,311 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 05:29:35" (1/1) ... [2025-01-09 17:29:35,312 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 05:29:35" (1/1) ... [2025-01-09 17:29:35,313 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 05:29:35" (1/1) ... [2025-01-09 17:29:35,315 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 17:29:35,316 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 17:29:35,316 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 17:29:35,316 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 17:29:35,317 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 05:29:35" (1/1) ... [2025-01-09 17:29:35,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 17:29:35,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 17:29:35,353 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 17:29:35,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 17:29:35,375 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2025-01-09 17:29:35,375 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2025-01-09 17:29:35,375 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2025-01-09 17:29:35,375 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2025-01-09 17:29:35,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-09 17:29:35,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-09 17:29:35,376 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-01-09 17:29:35,376 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-01-09 17:29:35,376 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-01-09 17:29:35,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-09 17:29:35,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 17:29:35,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-01-09 17:29:35,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-01-09 17:29:35,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-01-09 17:29:35,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 17:29:35,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 17:29:35,376 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2025-01-09 17:29:35,376 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2025-01-09 17:29:35,376 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_bytes [2025-01-09 17:29:35,376 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_bytes [2025-01-09 17:29:35,377 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-01-09 17:29:35,377 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-01-09 17:29:35,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-01-09 17:29:35,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-01-09 17:29:35,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-01-09 17:29:35,377 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2025-01-09 17:29:35,377 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2025-01-09 17:29:35,377 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2025-01-09 17:29:35,377 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2025-01-09 17:29:35,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-09 17:29:35,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-09 17:29:35,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-01-09 17:29:35,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 17:29:35,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-09 17:29:35,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-01-09 17:29:35,575 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 17:29:35,577 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 17:29:35,707 INFO L? ?]: Removed 30 outVars from TransFormulas that were not future-live. [2025-01-09 17:29:35,708 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 17:29:35,718 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 17:29:35,718 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-09 17:29:35,719 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 05:29:35 BoogieIcfgContainer [2025-01-09 17:29:35,719 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 17:29:35,720 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 17:29:35,720 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 17:29:35,725 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 17:29:35,725 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 05:29:33" (1/3) ... [2025-01-09 17:29:35,726 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d441bae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 05:29:35, skipping insertion in model container [2025-01-09 17:29:35,726 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 05:29:35" (2/3) ... [2025-01-09 17:29:35,726 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d441bae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 05:29:35, skipping insertion in model container [2025-01-09 17:29:35,726 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 05:29:35" (3/3) ... [2025-01-09 17:29:35,727 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_string_bytes_harness.i [2025-01-09 17:29:35,740 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 17:29:35,741 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. [2025-01-09 17:29:35,788 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 17:29:35,797 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;@1efd064b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 17:29:35,797 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 17:29:35,801 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) [2025-01-09 17:29:35,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2025-01-09 17:29:35,808 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 17:29:35,809 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] [2025-01-09 17:29:35,809 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 17:29:35,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 17:29:35,812 INFO L85 PathProgramCache]: Analyzing trace with hash -868059006, now seen corresponding path program 1 times [2025-01-09 17:29:35,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 17:29:35,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854310194] [2025-01-09 17:29:35,817 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 17:29:35,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 17:29:35,917 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-01-09 17:29:35,927 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-01-09 17:29:35,927 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 17:29:35,927 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 17:29:36,040 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-01-09 17:29:36,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 17:29:36,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854310194] [2025-01-09 17:29:36,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854310194] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 17:29:36,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655813486] [2025-01-09 17:29:36,041 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 17:29:36,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 17:29:36,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 17:29:36,043 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 17:29:36,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-09 17:29:36,166 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-01-09 17:29:36,211 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-01-09 17:29:36,211 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 17:29:36,212 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 17:29:36,213 INFO L256 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-01-09 17:29:36,218 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 17:29:36,231 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-01-09 17:29:36,232 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 17:29:36,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655813486] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 17:29:36,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 17:29:36,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-01-09 17:29:36,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778040681] [2025-01-09 17:29:36,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 17:29:36,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 17:29:36,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 17:29:36,249 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 17:29:36,250 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 17:29:36,251 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) [2025-01-09 17:29:36,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 17:29:36,264 INFO L93 Difference]: Finished difference Result 118 states and 140 transitions. [2025-01-09 17:29:36,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 17:29:36,265 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 [2025-01-09 17:29:36,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 17:29:36,273 INFO L225 Difference]: With dead ends: 118 [2025-01-09 17:29:36,273 INFO L226 Difference]: Without dead ends: 58 [2025-01-09 17:29:36,275 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 [2025-01-09 17:29:36,276 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 [2025-01-09 17:29:36,276 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] [2025-01-09 17:29:36,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2025-01-09 17:29:36,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2025-01-09 17:29:36,294 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) [2025-01-09 17:29:36,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 64 transitions. [2025-01-09 17:29:36,298 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 64 transitions. Word has length 55 [2025-01-09 17:29:36,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 17:29:36,298 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 64 transitions. [2025-01-09 17:29:36,298 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) [2025-01-09 17:29:36,298 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 64 transitions. [2025-01-09 17:29:36,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2025-01-09 17:29:36,299 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 17:29:36,299 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] [2025-01-09 17:29:36,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-01-09 17:29:36,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-01-09 17:29:36,504 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 17:29:36,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 17:29:36,505 INFO L85 PathProgramCache]: Analyzing trace with hash -362172612, now seen corresponding path program 1 times [2025-01-09 17:29:36,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 17:29:36,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100682036] [2025-01-09 17:29:36,505 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 17:29:36,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 17:29:36,544 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-01-09 17:29:36,609 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-01-09 17:29:36,612 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 17:29:36,612 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 17:29:37,403 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-09 17:29:37,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 17:29:37,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100682036] [2025-01-09 17:29:37,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100682036] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 17:29:37,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 17:29:37,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-01-09 17:29:37,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010211235] [2025-01-09 17:29:37,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 17:29:37,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-09 17:29:37,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 17:29:37,406 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-09 17:29:37,407 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2025-01-09 17:29:37,407 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) [2025-01-09 17:29:37,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 17:29:37,592 INFO L93 Difference]: Finished difference Result 64 states and 69 transitions. [2025-01-09 17:29:37,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-01-09 17:29:37,593 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 [2025-01-09 17:29:37,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 17:29:37,594 INFO L225 Difference]: With dead ends: 64 [2025-01-09 17:29:37,595 INFO L226 Difference]: Without dead ends: 60 [2025-01-09 17:29:37,595 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 [2025-01-09 17:29:37,596 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 [2025-01-09 17:29:37,597 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] [2025-01-09 17:29:37,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2025-01-09 17:29:37,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2025-01-09 17:29:37,607 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) [2025-01-09 17:29:37,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 65 transitions. [2025-01-09 17:29:37,608 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 65 transitions. Word has length 55 [2025-01-09 17:29:37,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 17:29:37,609 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 65 transitions. [2025-01-09 17:29:37,609 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) [2025-01-09 17:29:37,611 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 65 transitions. [2025-01-09 17:29:37,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-01-09 17:29:37,613 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 17:29:37,613 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] [2025-01-09 17:29:37,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 17:29:37,613 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 17:29:37,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 17:29:37,613 INFO L85 PathProgramCache]: Analyzing trace with hash 543084274, now seen corresponding path program 1 times [2025-01-09 17:29:37,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 17:29:37,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749589857] [2025-01-09 17:29:37,614 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 17:29:37,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 17:29:37,646 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-01-09 17:29:37,820 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-01-09 17:29:37,820 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 17:29:37,820 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 17:29:40,002 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-01-09 17:29:40,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 17:29:40,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749589857] [2025-01-09 17:29:40,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749589857] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 17:29:40,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694318923] [2025-01-09 17:29:40,003 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 17:29:40,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 17:29:40,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 17:29:40,007 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 17:29:40,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-09 17:29:40,087 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-01-09 17:29:40,127 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-01-09 17:29:40,127 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 17:29:40,127 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 17:29:40,130 INFO L256 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 115 conjuncts are in the unsatisfiable core [2025-01-09 17:29:40,136 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 17:29:40,341 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 43 [2025-01-09 17:29:40,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-09 17:29:40,362 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2025-01-09 17:29:40,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 16 [2025-01-09 17:29:40,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 7 [2025-01-09 17:29:40,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-09 17:29:40,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2025-01-09 17:29:56,753 WARN L286 SmtUtils]: Spent 10.47s on a formula simplification. DAG size of input: 552 DAG size of output: 356 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2025-01-09 17:29:56,754 INFO L349 Elim1Store]: treesize reduction 984, result has 44.6 percent of original size [2025-01-09 17:29:56,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 19 select indices, 19 select index equivalence classes, 1 disjoint index pairs (out of 171 index pairs), introduced 29 new quantified variables, introduced 171 case distinctions, treesize of input 467 treesize of output 1084 [2025-01-09 17:30:16,095 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2025-01-09 17:30:36,075 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2025-01-09 17:30:42,755 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2025-01-09 17:30:46,104 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2025-01-09 17:30:47,462 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2025-01-09 17:30:47,624 WARN L672 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2025-01-09 17:30:47,697 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2025-01-09 17:30:47,951 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2025-01-09 17:30:48,405 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2025-01-09 17:30:49,044 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2025-01-09 17:30:51,146 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2025-01-09 17:30:56,604 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2025-01-09 17:31:04,837 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2025-01-09 17:31:09,204 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2025-01-09 17:31:09,745 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2025-01-09 17:31:09,996 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2025-01-09 17:31:10,199 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2025-01-09 17:31:10,457 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2025-01-09 17:31:10,638 WARN L672 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2025-01-09 17:31:12,226 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts.