./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_front_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 48c9605d 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_array_list_front_harness_negated.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 2ce109988390b6767f379f20c8317980e8ad55260534e411b505fed6860deb81 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 01:27:10,855 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 01:27:10,927 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-02-08 01:27:10,932 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 01:27:10,936 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 01:27:10,969 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 01:27:10,970 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 01:27:10,970 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 01:27:10,971 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 01:27:10,971 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 01:27:10,972 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 01:27:10,972 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 01:27:10,972 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 01:27:10,972 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 01:27:10,972 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 01:27:10,973 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 01:27:10,973 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 01:27:10,973 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 01:27:10,973 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 01:27:10,973 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 01:27:10,973 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 01:27:10,974 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 01:27:10,974 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 01:27:10,974 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 01:27:10,974 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 01:27:10,974 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 01:27:10,974 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 01:27:10,974 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 01:27:10,974 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 01:27:10,974 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:27:10,975 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 01:27:10,975 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 01:27:10,975 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 01:27:10,975 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 01:27:10,975 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 01:27:10,975 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 01:27:10,975 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 01:27:10,975 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 01:27:10,975 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 01:27:10,975 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 01:27:10,975 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 -> 2ce109988390b6767f379f20c8317980e8ad55260534e411b505fed6860deb81 [2025-02-08 01:27:11,278 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 01:27:11,291 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 01:27:11,293 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 01:27:11,294 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 01:27:11,294 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 01:27:11,299 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_front_harness_negated.i [2025-02-08 01:27:12,687 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4635e6a1c/38486dbf43a2481daf93405a746b1c3e/FLAGd3846c23e [2025-02-08 01:27:13,184 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 01:27:13,185 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_front_harness_negated.i [2025-02-08 01:27:13,222 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4635e6a1c/38486dbf43a2481daf93405a746b1c3e/FLAGd3846c23e [2025-02-08 01:27:13,238 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4635e6a1c/38486dbf43a2481daf93405a746b1c3e [2025-02-08 01:27:13,241 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 01:27:13,242 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 01:27:13,245 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 01:27:13,245 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 01:27:13,249 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 01:27:13,250 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:27:13" (1/1) ... [2025-02-08 01:27:13,253 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@724315a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:27:13, skipping insertion in model container [2025-02-08 01:27:13,253 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:27:13" (1/1) ... [2025-02-08 01:27:13,327 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 01:27:13,551 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_array_list_front_harness_negated.i[4494,4507] [2025-02-08 01:27:13,560 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_array_list_front_harness_negated.i[4554,4567] [2025-02-08 01:27:14,122 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:27:14,123 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:27:14,123 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:27:14,124 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:27:14,124 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:27:14,134 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:27:14,135 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:27:14,136 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:27:14,137 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:27:14,138 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:27:14,139 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:27:14,139 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:27:14,139 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:27:14,480 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:27:14,486 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:27:14,559 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:27:14,590 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 01:27:14,609 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_array_list_front_harness_negated.i[4494,4507] [2025-02-08 01:27:14,609 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_array_list_front_harness_negated.i[4554,4567] [2025-02-08 01:27:14,666 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:27:14,668 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:27:14,668 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:27:14,669 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:27:14,669 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:27:14,676 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:27:14,678 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:27:14,679 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:27:14,679 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:27:14,680 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:27:14,681 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:27:14,681 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:27:14,681 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:27:14,766 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:27:14,775 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:27:14,784 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7735-7746] [2025-02-08 01:27:14,812 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:27:15,032 INFO L204 MainTranslator]: Completed translation [2025-02-08 01:27:15,033 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:27:15 WrapperNode [2025-02-08 01:27:15,033 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 01:27:15,034 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 01:27:15,034 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 01:27:15,034 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 01:27:15,038 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:27:15" (1/1) ... [2025-02-08 01:27:15,136 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:27:15" (1/1) ... [2025-02-08 01:27:15,197 INFO L138 Inliner]: procedures = 680, calls = 1682, calls flagged for inlining = 53, calls inlined = 8, statements flattened = 662 [2025-02-08 01:27:15,198 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 01:27:15,198 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 01:27:15,199 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 01:27:15,199 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 01:27:15,206 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:27:15" (1/1) ... [2025-02-08 01:27:15,207 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:27:15" (1/1) ... [2025-02-08 01:27:15,212 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:27:15" (1/1) ... [2025-02-08 01:27:15,283 INFO L175 MemorySlicer]: Split 314 memory accesses to 6 slices as follows [2, 238, 56, 9, 6, 3]. 76 percent of accesses are in the largest equivalence class. The 24 initializations are split as follows [2, 6, 10, 5, 0, 1]. The 239 writes are split as follows [0, 232, 3, 1, 2, 1]. [2025-02-08 01:27:15,283 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:27:15" (1/1) ... [2025-02-08 01:27:15,283 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:27:15" (1/1) ... [2025-02-08 01:27:15,317 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:27:15" (1/1) ... [2025-02-08 01:27:15,322 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:27:15" (1/1) ... [2025-02-08 01:27:15,335 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:27:15" (1/1) ... [2025-02-08 01:27:15,348 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:27:15" (1/1) ... [2025-02-08 01:27:15,362 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 01:27:15,366 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 01:27:15,366 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 01:27:15,366 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 01:27:15,366 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:27:15" (1/1) ... [2025-02-08 01:27:15,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:27:15,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:27:15,400 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) [2025-02-08 01:27:15,406 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 [2025-02-08 01:27:15,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 01:27:15,421 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2025-02-08 01:27:15,421 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2025-02-08 01:27:15,421 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2025-02-08 01:27:15,421 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2025-02-08 01:27:15,421 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2025-02-08 01:27:15,421 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2025-02-08 01:27:15,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2025-02-08 01:27:15,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2025-02-08 01:27:15,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2025-02-08 01:27:15,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2025-02-08 01:27:15,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2025-02-08 01:27:15,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2025-02-08 01:27:15,421 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 01:27:15,421 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 01:27:15,421 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-08 01:27:15,421 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-02-08 01:27:15,421 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-02-08 01:27:15,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-02-08 01:27:15,422 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2025-02-08 01:27:15,422 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2025-02-08 01:27:15,422 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-08 01:27:15,422 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-08 01:27:15,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 01:27:15,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 01:27:15,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-08 01:27:15,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-08 01:27:15,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-02-08 01:27:15,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-02-08 01:27:15,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2025-02-08 01:27:15,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2025-02-08 01:27:15,422 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2025-02-08 01:27:15,422 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2025-02-08 01:27:15,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 01:27:15,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 01:27:15,422 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2025-02-08 01:27:15,422 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2025-02-08 01:27:15,422 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2025-02-08 01:27:15,422 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2025-02-08 01:27:15,422 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2025-02-08 01:27:15,422 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2025-02-08 01:27:15,423 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2025-02-08 01:27:15,423 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2025-02-08 01:27:15,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2025-02-08 01:27:15,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2025-02-08 01:27:15,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2025-02-08 01:27:15,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2025-02-08 01:27:15,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2025-02-08 01:27:15,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2025-02-08 01:27:15,423 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2025-02-08 01:27:15,423 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2025-02-08 01:27:15,423 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2025-02-08 01:27:15,423 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2025-02-08 01:27:15,423 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-08 01:27:15,423 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-08 01:27:15,423 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2025-02-08 01:27:15,423 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2025-02-08 01:27:15,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-08 01:27:15,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-08 01:27:15,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-08 01:27:15,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-02-08 01:27:15,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-02-08 01:27:15,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-02-08 01:27:15,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2025-02-08 01:27:15,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-02-08 01:27:15,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-02-08 01:27:15,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-02-08 01:27:15,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-02-08 01:27:15,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2025-02-08 01:27:15,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2025-02-08 01:27:15,424 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2025-02-08 01:27:15,424 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2025-02-08 01:27:15,424 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2025-02-08 01:27:15,424 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2025-02-08 01:27:15,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 01:27:15,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 01:27:15,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-08 01:27:15,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-02-08 01:27:15,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-02-08 01:27:15,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-02-08 01:27:15,424 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2025-02-08 01:27:15,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2025-02-08 01:27:15,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 01:27:15,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 01:27:15,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-08 01:27:15,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-08 01:27:15,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-02-08 01:27:15,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-02-08 01:27:15,698 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 01:27:15,701 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 01:27:15,762 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L2782: havoc #t~malloc77.base, #t~malloc77.offset; [2025-02-08 01:27:15,787 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L263: havoc #t~nondet6; [2025-02-08 01:27:15,824 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L2588: havoc #t~ret57#1; [2025-02-08 01:27:15,867 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L2796: havoc #t~ret81;havoc #t~ite83.base, #t~ite83.offset;havoc #t~ret82.base, #t~ret82.offset; [2025-02-08 01:27:15,973 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L3268: call ULTIMATE.dealloc(~#required_size~0.base, ~#required_size~0.offset);havoc ~#required_size~0.base, ~#required_size~0.offset; [2025-02-08 01:27:15,978 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L261: havoc #t~nondet4; [2025-02-08 01:27:16,002 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L7356: havoc #t~ret687.base, #t~ret687.offset; [2025-02-08 01:27:21,547 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L3342: havoc aws_array_list_front_#t~ret180#1; [2025-02-08 01:27:21,630 INFO L? ?]: Removed 126 outVars from TransFormulas that were not future-live. [2025-02-08 01:27:21,631 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 01:27:21,647 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 01:27:21,649 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 01:27:21,650 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:27:21 BoogieIcfgContainer [2025-02-08 01:27:21,650 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 01:27:21,653 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 01:27:21,654 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 01:27:21,658 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 01:27:21,659 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 01:27:13" (1/3) ... [2025-02-08 01:27:21,659 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@456bbe9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:27:21, skipping insertion in model container [2025-02-08 01:27:21,660 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:27:15" (2/3) ... [2025-02-08 01:27:21,661 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@456bbe9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:27:21, skipping insertion in model container [2025-02-08 01:27:21,661 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:27:21" (3/3) ... [2025-02-08 01:27:21,662 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_array_list_front_harness_negated.i [2025-02-08 01:27:21,677 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 01:27:21,679 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_array_list_front_harness_negated.i that has 18 procedures, 183 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-08 01:27:21,743 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 01:27:21,756 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;@1ef1a1db, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 01:27:21,757 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-08 01:27:21,761 INFO L276 IsEmpty]: Start isEmpty. Operand has 183 states, 106 states have (on average 1.2075471698113207) internal successors, (128), 109 states have internal predecessors, (128), 56 states have call successors, (56), 17 states have call predecessors, (56), 17 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2025-02-08 01:27:21,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2025-02-08 01:27:21,775 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 01:27:21,776 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2025-02-08 01:27:21,777 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 01:27:21,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:27:21,783 INFO L85 PathProgramCache]: Analyzing trace with hash 47630295, now seen corresponding path program 1 times [2025-02-08 01:27:21,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:27:21,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404150566] [2025-02-08 01:27:21,793 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:27:21,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:27:26,863 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 128 statements into 1 equivalence classes. [2025-02-08 01:27:27,238 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 128 of 128 statements. [2025-02-08 01:27:27,238 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:27:27,238 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:27:27,780 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2025-02-08 01:27:27,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:27:27,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404150566] [2025-02-08 01:27:27,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404150566] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:27:27,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957552027] [2025-02-08 01:27:27,784 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:27:27,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:27:27,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:27:27,788 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) [2025-02-08 01:27:27,789 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 [2025-02-08 01:27:32,643 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 128 statements into 1 equivalence classes. [2025-02-08 01:27:33,209 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 128 of 128 statements. [2025-02-08 01:27:33,210 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:27:33,210 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:27:33,229 INFO L256 TraceCheckSpWp]: Trace formula consists of 4252 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-02-08 01:27:33,239 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:27:33,258 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2025-02-08 01:27:33,258 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 01:27:33,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957552027] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:27:33,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 01:27:33,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-02-08 01:27:33,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846690564] [2025-02-08 01:27:33,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:27:33,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-08 01:27:33,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:27:33,282 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-08 01:27:33,283 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-08 01:27:33,285 INFO L87 Difference]: Start difference. First operand has 183 states, 106 states have (on average 1.2075471698113207) internal successors, (128), 109 states have internal predecessors, (128), 56 states have call successors, (56), 17 states have call predecessors, (56), 17 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) Second operand has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2025-02-08 01:27:33,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 01:27:33,330 INFO L93 Difference]: Finished difference Result 360 states and 510 transitions. [2025-02-08 01:27:33,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-08 01:27:33,332 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 128 [2025-02-08 01:27:33,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 01:27:33,340 INFO L225 Difference]: With dead ends: 360 [2025-02-08 01:27:33,340 INFO L226 Difference]: Without dead ends: 172 [2025-02-08 01:27:33,347 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-08 01:27:33,353 INFO L435 NwaCegarLoop]: 238 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, 238 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 [2025-02-08 01:27:33,353 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 01:27:33,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2025-02-08 01:27:33,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2025-02-08 01:27:33,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 100 states have (on average 1.16) internal successors, (116), 101 states have internal predecessors, (116), 55 states have call successors, (55), 17 states have call predecessors, (55), 16 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2025-02-08 01:27:33,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 224 transitions. [2025-02-08 01:27:33,412 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 224 transitions. Word has length 128 [2025-02-08 01:27:33,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 01:27:33,413 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 224 transitions. [2025-02-08 01:27:33,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2025-02-08 01:27:33,414 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 224 transitions. [2025-02-08 01:27:33,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2025-02-08 01:27:33,420 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 01:27:33,421 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2025-02-08 01:27:33,436 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-08 01:27:33,622 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 [2025-02-08 01:27:33,622 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 01:27:33,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:27:33,623 INFO L85 PathProgramCache]: Analyzing trace with hash 77145305, now seen corresponding path program 1 times [2025-02-08 01:27:33,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:27:33,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982349364] [2025-02-08 01:27:33,623 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:27:33,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:27:37,404 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 128 statements into 1 equivalence classes. [2025-02-08 01:27:37,588 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 128 of 128 statements. [2025-02-08 01:27:37,589 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:27:37,589 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:27:40,091 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2025-02-08 01:27:40,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:27:40,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982349364] [2025-02-08 01:27:40,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982349364] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:27:40,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:27:40,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-08 01:27:40,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698156670] [2025-02-08 01:27:40,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:27:40,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 01:27:40,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:27:40,094 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 01:27:40,095 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-08 01:27:40,095 INFO L87 Difference]: Start difference. First operand 172 states and 224 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) [2025-02-08 01:27:44,180 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-02-08 01:27:48,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.40s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-02-08 01:27:52,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.41s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-02-08 01:27:54,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 01:27:54,129 INFO L93 Difference]: Finished difference Result 297 states and 390 transitions. [2025-02-08 01:27:54,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:27:54,130 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) Word has length 128 [2025-02-08 01:27:54,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 01:27:54,133 INFO L225 Difference]: With dead ends: 297 [2025-02-08 01:27:54,134 INFO L226 Difference]: Without dead ends: 190 [2025-02-08 01:27:54,135 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-02-08 01:27:54,135 INFO L435 NwaCegarLoop]: 219 mSDtfsCounter, 6 mSDsluCounter, 1090 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.8s IncrementalHoareTripleChecker+Time [2025-02-08 01:27:54,136 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1309 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 3 Unknown, 0 Unchecked, 13.8s Time] [2025-02-08 01:27:54,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2025-02-08 01:27:54,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 186. [2025-02-08 01:27:54,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 109 states have (on average 1.1559633027522935) internal successors, (126), 110 states have internal predecessors, (126), 59 states have call successors, (59), 17 states have call predecessors, (59), 17 states have return successors, (58), 58 states have call predecessors, (58), 57 states have call successors, (58) [2025-02-08 01:27:54,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 243 transitions. [2025-02-08 01:27:54,166 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 243 transitions. Word has length 128 [2025-02-08 01:27:54,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 01:27:54,167 INFO L471 AbstractCegarLoop]: Abstraction has 186 states and 243 transitions. [2025-02-08 01:27:54,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) [2025-02-08 01:27:54,167 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 243 transitions. [2025-02-08 01:27:54,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2025-02-08 01:27:54,170 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 01:27:54,170 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2025-02-08 01:27:54,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 01:27:54,170 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 01:27:54,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:27:54,171 INFO L85 PathProgramCache]: Analyzing trace with hash 515154808, now seen corresponding path program 1 times [2025-02-08 01:27:54,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:27:54,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834177178] [2025-02-08 01:27:54,171 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:27:54,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:27:58,046 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 128 statements into 1 equivalence classes. [2025-02-08 01:27:58,195 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 128 of 128 statements. [2025-02-08 01:27:58,195 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:27:58,195 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:28:01,051 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2025-02-08 01:28:01,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:28:01,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834177178] [2025-02-08 01:28:01,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834177178] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:28:01,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:28:01,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-08 01:28:01,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580567170] [2025-02-08 01:28:01,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:28:01,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 01:28:01,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:28:01,054 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 01:28:01,054 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-02-08 01:28:01,054 INFO L87 Difference]: Start difference. First operand 186 states and 243 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 7 states have internal predecessors, (45), 4 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) [2025-02-08 01:28:05,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-02-08 01:28:09,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-02-08 01:28:10,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 01:28:10,876 INFO L93 Difference]: Finished difference Result 312 states and 413 transitions. [2025-02-08 01:28:10,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 01:28:10,877 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 7 states have internal predecessors, (45), 4 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) Word has length 128 [2025-02-08 01:28:10,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 01:28:10,882 INFO L225 Difference]: With dead ends: 312 [2025-02-08 01:28:10,882 INFO L226 Difference]: Without dead ends: 211 [2025-02-08 01:28:10,883 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-02-08 01:28:10,883 INFO L435 NwaCegarLoop]: 230 mSDtfsCounter, 14 mSDsluCounter, 1363 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 1593 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2025-02-08 01:28:10,883 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 1593 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 49 Invalid, 2 Unknown, 0 Unchecked, 9.6s Time] [2025-02-08 01:28:10,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2025-02-08 01:28:10,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 192. [2025-02-08 01:28:10,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 112 states have (on average 1.1517857142857142) internal successors, (129), 113 states have internal predecessors, (129), 62 states have call successors, (62), 17 states have call predecessors, (62), 17 states have return successors, (61), 61 states have call predecessors, (61), 60 states have call successors, (61) [2025-02-08 01:28:10,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 252 transitions. [2025-02-08 01:28:10,903 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 252 transitions. Word has length 128 [2025-02-08 01:28:10,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 01:28:10,903 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 252 transitions. [2025-02-08 01:28:10,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 7 states have internal predecessors, (45), 4 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) [2025-02-08 01:28:10,903 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 252 transitions. [2025-02-08 01:28:10,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2025-02-08 01:28:10,906 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 01:28:10,906 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2025-02-08 01:28:10,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 01:28:10,907 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 01:28:10,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:28:10,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1829512233, now seen corresponding path program 1 times [2025-02-08 01:28:10,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:28:10,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662004364] [2025-02-08 01:28:10,908 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:28:10,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:28:14,474 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 128 statements into 1 equivalence classes. [2025-02-08 01:28:14,705 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 128 of 128 statements. [2025-02-08 01:28:14,706 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:28:14,706 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:28:17,405 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 6 proven. 29 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2025-02-08 01:28:17,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:28:17,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662004364] [2025-02-08 01:28:17,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662004364] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:28:17,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367261948] [2025-02-08 01:28:17,406 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:28:17,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:28:17,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:28:17,408 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) [2025-02-08 01:28:17,411 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 [2025-02-08 01:28:21,710 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 128 statements into 1 equivalence classes. [2025-02-08 01:28:22,214 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 128 of 128 statements. [2025-02-08 01:28:22,214 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:28:22,214 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:28:22,233 INFO L256 TraceCheckSpWp]: Trace formula consists of 4246 conjuncts, 55 conjuncts are in the unsatisfiable core [2025-02-08 01:28:22,243 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:28:25,525 WARN L873 $PredicateComparison]: unable to prove that (exists ((v_ensure_array_list_has_allocated_data_member_~list.offset_8 Int)) (and (= (store |c_old(#memory_$Pointer$#2.base)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| (store (select |c_old(#memory_$Pointer$#2.base)| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) v_ensure_array_list_has_allocated_data_member_~list.offset_8 (select (select |c_#memory_$Pointer$#2.base| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) v_ensure_array_list_has_allocated_data_member_~list.offset_8))) |c_#memory_$Pointer$#2.base|) (<= v_ensure_array_list_has_allocated_data_member_~list.offset_8 |c_ensure_array_list_has_allocated_data_member_#in~list.offset|) (= (store |c_old(#memory_$Pointer$#2.offset)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| (store (select |c_old(#memory_$Pointer$#2.offset)| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) v_ensure_array_list_has_allocated_data_member_~list.offset_8 (select (select |c_#memory_$Pointer$#2.offset| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) v_ensure_array_list_has_allocated_data_member_~list.offset_8))) |c_#memory_$Pointer$#2.offset|))) is different from true [2025-02-08 01:28:25,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 01:28:25,686 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-02-08 01:28:25,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 01:28:25,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-02-08 01:28:37,102 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 87 proven. 32 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2025-02-08 01:28:37,102 INFO L312 TraceCheckSpWp]: Computing backward predicates...