./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_linked_list_pop_front_harness.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_linked_list_pop_front_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 0a45241a50bca97d16f2ca30787e76783488e633dbd3fde1131a60622cf8ee85 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 01:52:51,258 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 01:52:51,300 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-02-08 01:52:51,303 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 01:52:51,303 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 01:52:51,323 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 01:52:51,324 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 01:52:51,324 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 01:52:51,324 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 01:52:51,324 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 01:52:51,324 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 01:52:51,324 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 01:52:51,325 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 01:52:51,325 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 01:52:51,325 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 01:52:51,325 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 01:52:51,325 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 01:52:51,325 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 01:52:51,325 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 01:52:51,325 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 01:52:51,325 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 01:52:51,325 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 01:52:51,326 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 01:52:51,326 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 01:52:51,326 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 01:52:51,326 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 01:52:51,329 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 01:52:51,329 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 01:52:51,329 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 01:52:51,329 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:52:51,330 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 01:52:51,330 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 01:52:51,330 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 01:52:51,330 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 01:52:51,330 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 01:52:51,330 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 01:52:51,330 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 01:52:51,330 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 01:52:51,330 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 01:52:51,330 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 01:52:51,330 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 -> 0a45241a50bca97d16f2ca30787e76783488e633dbd3fde1131a60622cf8ee85 [2025-02-08 01:52:51,663 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 01:52:51,669 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 01:52:51,671 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 01:52:51,671 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 01:52:51,672 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 01:52:51,672 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_linked_list_pop_front_harness.i [2025-02-08 01:52:52,757 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8002defa5/7b5dd39775214831a48f8b28d41a61d0/FLAGb8ef6ffb2 [2025-02-08 01:52:53,246 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 01:52:53,246 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_front_harness.i [2025-02-08 01:52:53,278 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8002defa5/7b5dd39775214831a48f8b28d41a61d0/FLAGb8ef6ffb2 [2025-02-08 01:52:53,326 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8002defa5/7b5dd39775214831a48f8b28d41a61d0 [2025-02-08 01:52:53,327 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 01:52:53,328 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 01:52:53,330 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 01:52:53,331 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 01:52:53,334 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 01:52:53,335 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:52:53" (1/1) ... [2025-02-08 01:52:53,336 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4987fcb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:52:53, skipping insertion in model container [2025-02-08 01:52:53,336 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:52:53" (1/1) ... [2025-02-08 01:52:53,387 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 01:52:53,557 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_linked_list_pop_front_harness.i[4499,4512] [2025-02-08 01:52:53,562 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_linked_list_pop_front_harness.i[4559,4572] [2025-02-08 01:52:53,959 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:53,965 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:53,965 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:53,965 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:53,966 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:53,974 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:53,974 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:53,975 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:53,976 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:53,977 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:53,977 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:53,978 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:53,978 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:54,269 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_linked_list_pop_front_harness.i[150662,150675] [2025-02-08 01:52:54,272 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:52:54,284 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 01:52:54,293 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_linked_list_pop_front_harness.i[4499,4512] [2025-02-08 01:52:54,295 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_linked_list_pop_front_harness.i[4559,4572] [2025-02-08 01:52:54,339 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:54,341 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:54,342 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:54,342 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:54,344 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:54,349 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:54,351 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:54,352 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:54,352 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:54,353 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:54,354 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:54,354 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:54,355 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:54,429 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_linked_list_pop_front_harness.i[150662,150675] [2025-02-08 01:52:54,429 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:52:54,576 INFO L204 MainTranslator]: Completed translation [2025-02-08 01:52:54,577 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:52:54 WrapperNode [2025-02-08 01:52:54,577 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 01:52:54,578 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 01:52:54,581 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 01:52:54,581 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 01:52:54,585 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:52:54" (1/1) ... [2025-02-08 01:52:54,651 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:52:54" (1/1) ... [2025-02-08 01:52:54,687 INFO L138 Inliner]: procedures = 668, calls = 1044, calls flagged for inlining = 53, calls inlined = 8, statements flattened = 219 [2025-02-08 01:52:54,688 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 01:52:54,688 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 01:52:54,688 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 01:52:54,688 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 01:52:54,695 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:52:54" (1/1) ... [2025-02-08 01:52:54,695 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:52:54" (1/1) ... [2025-02-08 01:52:54,700 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:52:54" (1/1) ... [2025-02-08 01:52:54,718 INFO L175 MemorySlicer]: Split 43 memory accesses to 3 slices as follows [2, 36, 5]. 84 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 0, 5]. The 9 writes are split as follows [0, 9, 0]. [2025-02-08 01:52:54,718 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:52:54" (1/1) ... [2025-02-08 01:52:54,719 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:52:54" (1/1) ... [2025-02-08 01:52:54,727 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:52:54" (1/1) ... [2025-02-08 01:52:54,728 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:52:54" (1/1) ... [2025-02-08 01:52:54,730 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:52:54" (1/1) ... [2025-02-08 01:52:54,731 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:52:54" (1/1) ... [2025-02-08 01:52:54,741 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 01:52:54,742 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 01:52:54,743 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 01:52:54,743 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 01:52:54,743 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:52:54" (1/1) ... [2025-02-08 01:52:54,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:52:54,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:52:54,781 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 01:52:54,789 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 01:52:54,805 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2025-02-08 01:52:54,806 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2025-02-08 01:52:54,806 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_remove [2025-02-08 01:52:54,806 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_remove [2025-02-08 01:52:54,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 01:52:54,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 01:52:54,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 01:52:54,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-08 01:52:54,807 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-08 01:52:54,807 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-08 01:52:54,807 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2025-02-08 01:52:54,807 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2025-02-08 01:52:54,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 01:52:54,807 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2025-02-08 01:52:54,807 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2025-02-08 01:52:54,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 01:52:54,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-08 01:52:54,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-08 01:52:54,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-02-08 01:52:54,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 01:52:54,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 01:52:54,808 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_empty [2025-02-08 01:52:54,808 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_empty [2025-02-08 01:52:54,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-02-08 01:52:54,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-02-08 01:52:54,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-02-08 01:52:54,808 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-02-08 01:52:54,808 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-02-08 01:52:54,808 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-02-08 01:52:54,808 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-08 01:52:54,808 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-08 01:52:54,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-08 01:52:54,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-08 01:52:54,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-08 01:52:54,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-02-08 01:52:54,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-02-08 01:52:54,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-02-08 01:52:54,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-02-08 01:52:54,809 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2025-02-08 01:52:54,809 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2025-02-08 01:52:54,809 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2025-02-08 01:52:54,809 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2025-02-08 01:52:54,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 01:52:54,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 01:52:54,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-08 01:52:55,044 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 01:52:55,046 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 01:52:55,094 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L4729: havoc #t~mem317.base, #t~mem317.offset;havoc #t~short318;havoc #t~mem319.base, #t~mem319.offset;havoc #t~mem320.base, #t~mem320.offset;havoc #t~short321; [2025-02-08 01:52:55,130 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L266: havoc #t~nondet9; [2025-02-08 01:52:55,180 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L4718: havoc #t~mem312.base, #t~mem312.offset;havoc #t~short313;havoc #t~mem314.base, #t~mem314.offset;havoc #t~mem315.base, #t~mem315.offset;havoc #t~short316; [2025-02-08 01:52:55,337 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L4700-1: #t~ret311#1 := aws_linked_list_is_valid_deep_#res#1;havoc aws_linked_list_is_valid_deep_#t~ret322#1, aws_linked_list_is_valid_deep_#t~mem323#1.base, aws_linked_list_is_valid_deep_#t~mem323#1.offset, aws_linked_list_is_valid_deep_~list#1.base, aws_linked_list_is_valid_deep_~list#1.offset, aws_linked_list_is_valid_deep_~temp~0#1.base, aws_linked_list_is_valid_deep_~temp~0#1.offset, aws_linked_list_is_valid_deep_~head_reaches_tail~0#1;havoc aws_linked_list_is_valid_deep_#in~list#1.base, aws_linked_list_is_valid_deep_#in~list#1.offset;assume { :end_inline_aws_linked_list_is_valid_deep } true;#res#1 := (if 0 == #t~ret311#1 % 256 then 0 else 1);havoc #t~ret311#1; [2025-02-08 01:52:55,338 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L4700: havoc #t~ret311#1; [2025-02-08 01:52:55,342 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L4685: havoc #t~mem302.base, #t~mem302.offset; [2025-02-08 01:52:55,389 INFO L? ?]: Removed 97 outVars from TransFormulas that were not future-live. [2025-02-08 01:52:55,390 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 01:52:55,396 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 01:52:55,396 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 01:52:55,396 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:52:55 BoogieIcfgContainer [2025-02-08 01:52:55,397 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 01:52:55,398 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 01:52:55,398 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 01:52:55,400 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 01:52:55,401 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 01:52:53" (1/3) ... [2025-02-08 01:52:55,401 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@289a2f1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:52:55, skipping insertion in model container [2025-02-08 01:52:55,401 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:52:54" (2/3) ... [2025-02-08 01:52:55,401 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@289a2f1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:52:55, skipping insertion in model container [2025-02-08 01:52:55,401 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:52:55" (3/3) ... [2025-02-08 01:52:55,402 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_linked_list_pop_front_harness.i [2025-02-08 01:52:55,410 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 01:52:55,411 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_linked_list_pop_front_harness.i that has 13 procedures, 136 locations, 1 initial locations, 7 loop locations, and 1 error locations. [2025-02-08 01:52:55,449 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 01:52:55,456 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;@6334b029, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 01:52:55,456 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-08 01:52:55,459 INFO L276 IsEmpty]: Start isEmpty. Operand has 128 states, 78 states have (on average 1.3205128205128205) internal successors, (103), 81 states have internal predecessors, (103), 37 states have call successors, (37), 10 states have call predecessors, (37), 10 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2025-02-08 01:52:55,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2025-02-08 01:52:55,465 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 01:52:55,466 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:52:55,466 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 01:52:55,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:52:55,470 INFO L85 PathProgramCache]: Analyzing trace with hash 904182836, now seen corresponding path program 1 times [2025-02-08 01:52:55,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:52:55,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464276045] [2025-02-08 01:52:55,475 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:52:55,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:52:55,603 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-02-08 01:52:55,748 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-02-08 01:52:55,752 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:52:55,752 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:52:56,472 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 15 proven. 13 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2025-02-08 01:52:56,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:52:56,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464276045] [2025-02-08 01:52:56,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464276045] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:52:56,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110274067] [2025-02-08 01:52:56,474 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:52:56,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:52:56,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:52:56,478 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 01:52:56,482 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 01:52:56,632 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-02-08 01:52:56,706 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-02-08 01:52:56,706 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:52:56,706 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:52:56,710 INFO L256 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 63 conjuncts are in the unsatisfiable core [2025-02-08 01:52:56,720 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:52:56,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 16 treesize of output 17 [2025-02-08 01:52:56,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 24 treesize of output 9 [2025-02-08 01:52:58,943 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 81 proven. 28 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2025-02-08 01:52:58,944 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:53:11,747 INFO L349 Elim1Store]: treesize reduction 15, result has 64.3 percent of original size [2025-02-08 01:53:11,748 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 174 treesize of output 160 [2025-02-08 01:53:11,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 21 [2025-02-08 01:53:11,769 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 01:53:11,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 81 [2025-02-08 01:53:11,799 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 6 treesize of output 4 [2025-02-08 01:53:11,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2025-02-08 01:53:11,843 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 01:53:11,844 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 25 [2025-02-08 01:53:11,865 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 01:53:11,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 71 [2025-02-08 01:53:11,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 01:53:11,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 01:53:11,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 56 [2025-02-08 01:53:12,002 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2025-02-08 01:53:12,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110274067] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-08 01:53:12,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-08 01:53:12,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [6, 16] total 33 [2025-02-08 01:53:12,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144467544] [2025-02-08 01:53:12,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:53:12,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-08 01:53:12,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:53:12,024 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-08 01:53:12,026 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=948, Unknown=3, NotChecked=0, Total=1056 [2025-02-08 01:53:12,028 INFO L87 Difference]: Start difference. First operand has 128 states, 78 states have (on average 1.3205128205128205) internal successors, (103), 81 states have internal predecessors, (103), 37 states have call successors, (37), 10 states have call predecessors, (37), 10 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 17 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 14 states have internal predecessors, (40), 8 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2025-02-08 01:53:12,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 01:53:12,795 INFO L93 Difference]: Finished difference Result 264 states and 404 transitions. [2025-02-08 01:53:12,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-08 01:53:12,797 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 14 states have internal predecessors, (40), 8 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) Word has length 116 [2025-02-08 01:53:12,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 01:53:12,803 INFO L225 Difference]: With dead ends: 264 [2025-02-08 01:53:12,805 INFO L226 Difference]: Without dead ends: 119 [2025-02-08 01:53:12,810 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 189 SyntacticMatches, 16 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=123, Invalid=1134, Unknown=3, NotChecked=0, Total=1260 [2025-02-08 01:53:12,814 INFO L435 NwaCegarLoop]: 160 mSDtfsCounter, 8 mSDsluCounter, 1606 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1766 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-08 01:53:12,815 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1766 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-08 01:53:12,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2025-02-08 01:53:12,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2025-02-08 01:53:12,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 72 states have (on average 1.2222222222222223) internal successors, (88), 73 states have internal predecessors, (88), 36 states have call successors, (36), 10 states have call predecessors, (36), 10 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2025-02-08 01:53:12,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 159 transitions. [2025-02-08 01:53:12,844 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 159 transitions. Word has length 116 [2025-02-08 01:53:12,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 01:53:12,845 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 159 transitions. [2025-02-08 01:53:12,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 14 states have internal predecessors, (40), 8 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2025-02-08 01:53:12,845 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 159 transitions. [2025-02-08 01:53:12,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2025-02-08 01:53:12,847 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 01:53:12,847 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:53:12,855 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 [2025-02-08 01:53:13,048 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 01:53:13,048 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 01:53:13,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:53:13,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1350519530, now seen corresponding path program 1 times [2025-02-08 01:53:13,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:53:13,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265991686] [2025-02-08 01:53:13,049 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:53:13,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:53:13,080 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 117 statements into 1 equivalence classes. [2025-02-08 01:53:13,114 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 117 of 117 statements. [2025-02-08 01:53:13,114 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:53:13,114 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:53:13,499 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 15 proven. 13 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2025-02-08 01:53:13,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:53:13,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265991686] [2025-02-08 01:53:13,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265991686] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:53:13,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23249399] [2025-02-08 01:53:13,499 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:53:13,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:53:13,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:53:13,501 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 01:53:13,505 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 01:53:13,602 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 117 statements into 1 equivalence classes. [2025-02-08 01:53:13,654 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 117 of 117 statements. [2025-02-08 01:53:13,654 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:53:13,655 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:53:13,657 INFO L256 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 58 conjuncts are in the unsatisfiable core [2025-02-08 01:53:13,666 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:53:13,673 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 6 treesize of output 5 [2025-02-08 01:53:13,773 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 18 treesize of output 19 [2025-02-08 01:53:13,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 18 treesize of output 19 [2025-02-08 01:53:13,821 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-02-08 01:53:13,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-02-08 01:53:13,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 01:53:13,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 01:53:13,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 40 [2025-02-08 01:53:13,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 01:53:13,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 01:53:13,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 40 [2025-02-08 01:53:13,840 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 27 treesize of output 20 [2025-02-08 01:53:13,846 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 27 treesize of output 20 [2025-02-08 01:53:13,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 01:53:13,877 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 41 treesize of output 36 [2025-02-08 01:53:13,880 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 01:53:13,880 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 25 [2025-02-08 01:53:13,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 53 [2025-02-08 01:53:13,897 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 95 [2025-02-08 01:53:26,834 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 110 proven. 21 refuted. 53 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 01:53:26,834 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:53:27,497 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset| 24)) (.cse2 (+ 16 |c_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.offset|))) (and (forall ((v_ArrVal_179 (Array Int Int)) (v_ArrVal_180 Int)) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_179))) (store .cse0 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse0 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 v_ArrVal_180))) |c_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base|) .cse2) 0)) (forall ((|ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| Int) (v_ArrVal_181 (Array Int Int))) (= (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_181) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|) |ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|)) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|)) |c_ULTIMATE.start_aws_linked_list_pop_front_harness_~#list~0#1.base|) .cse2) 0)))) is different from false [2025-02-08 01:53:27,518 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 01:53:27,518 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 90 [2025-02-08 01:53:27,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 6 treesize of output 4 [2025-02-08 01:53:27,718 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-08 01:53:27,719 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-08 01:53:27,774 INFO L349 Elim1Store]: treesize reduction 86, result has 45.2 percent of original size [2025-02-08 01:53:27,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 305 treesize of output 292 [2025-02-08 01:53:27,785 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-08 01:53:27,786 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-08 01:53:27,833 INFO L349 Elim1Store]: treesize reduction 86, result has 45.2 percent of original size [2025-02-08 01:53:27,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 335 treesize of output 322 [2025-02-08 01:53:27,870 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 01:53:27,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 268 treesize of output 266 [2025-02-08 01:53:27,899 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 01:53:27,903 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 225 treesize of output 226 [2025-02-08 01:53:27,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 215 treesize of output 211 [2025-02-08 01:53:27,947 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 01:53:27,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 312 treesize of output 310 [2025-02-08 01:53:27,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 269 treesize of output 257 [2025-02-08 01:53:28,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 8 treesize of output 4 [2025-02-08 01:53:28,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 8 treesize of output 4 [2025-02-08 01:53:29,187 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 01:53:29,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 611 treesize of output 601 [2025-02-08 01:53:29,839 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 01:53:29,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 913 treesize of output 839 [2025-02-08 01:53:31,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23249399] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:53:31,978 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 01:53:31,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 24] total 29 [2025-02-08 01:53:31,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001037558] [2025-02-08 01:53:31,978 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 01:53:31,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-02-08 01:53:31,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:53:31,979 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-02-08 01:53:31,980 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1069, Unknown=134, NotChecked=70, Total=1406 [2025-02-08 01:53:31,980 INFO L87 Difference]: Start difference. First operand 119 states and 159 transitions. Second operand has 29 states, 22 states have (on average 5.0) internal successors, (110), 22 states have internal predecessors, (110), 13 states have call successors, (31), 10 states have call predecessors, (31), 12 states have return successors, (30), 12 states have call predecessors, (30), 13 states have call successors, (30) [2025-02-08 01:53:39,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-08 01:53:46,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 01:53:46,346 INFO L93 Difference]: Finished difference Result 165 states and 202 transitions. [2025-02-08 01:53:46,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-02-08 01:53:46,348 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 22 states have (on average 5.0) internal successors, (110), 22 states have internal predecessors, (110), 13 states have call successors, (31), 10 states have call predecessors, (31), 12 states have return successors, (30), 12 states have call predecessors, (30), 13 states have call successors, (30) Word has length 117 [2025-02-08 01:53:46,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 01:53:46,350 INFO L225 Difference]: With dead ends: 165 [2025-02-08 01:53:46,350 INFO L226 Difference]: Without dead ends: 0 [2025-02-08 01:53:46,354 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 191 SyntacticMatches, 3 SemanticMatches, 63 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=341, Invalid=3245, Unknown=450, NotChecked=124, Total=4160 [2025-02-08 01:53:46,354 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 36 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 18 mSolverCounterUnsat, 352 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 352 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2025-02-08 01:53:46,354 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 505 Invalid, 829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 459 Invalid, 352 Unknown, 0 Unchecked, 7.9s Time] [2025-02-08 01:53:46,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-02-08 01:53:46,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-02-08 01:53:46,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:53:46,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-02-08 01:53:46,356 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 117 [2025-02-08 01:53:46,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 01:53:46,356 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-08 01:53:46,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 22 states have (on average 5.0) internal successors, (110), 22 states have internal predecessors, (110), 13 states have call successors, (31), 10 states have call predecessors, (31), 12 states have return successors, (30), 12 states have call predecessors, (30), 13 states have call successors, (30) [2025-02-08 01:53:46,357 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-02-08 01:53:46,357 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-02-08 01:53:46,359 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-02-08 01:53:46,369 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-08 01:53:46,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:53:46,562 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-02-08 01:53:46,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.