./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_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_back_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 4c102a8320469121bebf24ca3406288a96f198533855b78a0cc2eda1e300f8b5 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 01:52:43,788 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 01:52:43,858 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-02-08 01:52:43,863 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 01:52:43,863 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 01:52:43,888 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 01:52:43,889 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 01:52:43,889 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 01:52:43,890 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 01:52:43,890 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 01:52:43,891 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 01:52:43,891 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 01:52:43,891 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 01:52:43,891 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 01:52:43,892 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 01:52:43,892 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 01:52:43,892 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 01:52:43,893 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 01:52:43,893 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 01:52:43,893 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 01:52:43,893 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 01:52:43,893 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 01:52:43,893 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 01:52:43,893 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 01:52:43,893 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 01:52:43,893 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 01:52:43,893 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 01:52:43,893 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 01:52:43,894 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 01:52:43,894 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:52:43,894 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 01:52:43,894 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 01:52:43,894 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 01:52:43,894 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 01:52:43,894 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 01:52:43,894 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 01:52:43,894 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 01:52:43,894 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 01:52:43,895 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 01:52:43,895 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 01:52:43,895 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 -> 4c102a8320469121bebf24ca3406288a96f198533855b78a0cc2eda1e300f8b5 [2025-02-08 01:52:44,199 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 01:52:44,212 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 01:52:44,215 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 01:52:44,217 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 01:52:44,217 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 01:52:44,219 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i [2025-02-08 01:52:45,578 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/57248b3a3/2c7a550f88b349c9b47521734fcd4ba7/FLAG5a03d3d7a [2025-02-08 01:52:46,049 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 01:52:46,049 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i [2025-02-08 01:52:46,089 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/57248b3a3/2c7a550f88b349c9b47521734fcd4ba7/FLAG5a03d3d7a [2025-02-08 01:52:46,111 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/57248b3a3/2c7a550f88b349c9b47521734fcd4ba7 [2025-02-08 01:52:46,114 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 01:52:46,117 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 01:52:46,118 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 01:52:46,119 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 01:52:46,123 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 01:52:46,125 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:52:46" (1/1) ... [2025-02-08 01:52:46,127 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f93efe2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:52:46, skipping insertion in model container [2025-02-08 01:52:46,128 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:52:46" (1/1) ... [2025-02-08 01:52:46,216 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 01:52:46,470 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_back_harness.i[4498,4511] [2025-02-08 01:52:46,479 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_back_harness.i[4558,4571] [2025-02-08 01:52:47,243 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:47,244 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:47,244 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:47,245 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:47,246 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:47,261 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:47,261 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:47,263 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:47,264 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:47,265 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:47,266 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:47,267 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:47,268 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:47,761 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_back_harness.i[150656,150669] [2025-02-08 01:52:47,762 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:52:47,785 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 01:52:47,802 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_back_harness.i[4498,4511] [2025-02-08 01:52:47,802 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_back_harness.i[4558,4571] [2025-02-08 01:52:47,862 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:47,863 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:47,863 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:47,863 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:47,864 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:47,875 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:47,875 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:47,876 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:47,876 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:47,878 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:47,878 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:47,879 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:47,879 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:52:47,996 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_back_harness.i[150656,150669] [2025-02-08 01:52:47,997 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:52:48,205 INFO L204 MainTranslator]: Completed translation [2025-02-08 01:52:48,205 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:52:48 WrapperNode [2025-02-08 01:52:48,205 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 01:52:48,206 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 01:52:48,206 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 01:52:48,207 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 01:52:48,212 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:52:48" (1/1) ... [2025-02-08 01:52:48,273 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:52:48" (1/1) ... [2025-02-08 01:52:48,312 INFO L138 Inliner]: procedures = 668, calls = 1044, calls flagged for inlining = 53, calls inlined = 8, statements flattened = 219 [2025-02-08 01:52:48,313 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 01:52:48,316 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 01:52:48,317 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 01:52:48,317 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 01:52:48,328 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:52:48" (1/1) ... [2025-02-08 01:52:48,329 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:52:48" (1/1) ... [2025-02-08 01:52:48,332 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:52:48" (1/1) ... [2025-02-08 01:52:48,369 INFO L175 MemorySlicer]: Split 43 memory accesses to 3 slices as follows [2, 5, 36]. 84 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 9 writes are split as follows [0, 0, 9]. [2025-02-08 01:52:48,370 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:52:48" (1/1) ... [2025-02-08 01:52:48,370 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:52:48" (1/1) ... [2025-02-08 01:52:48,393 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:52:48" (1/1) ... [2025-02-08 01:52:48,395 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:52:48" (1/1) ... [2025-02-08 01:52:48,403 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:52:48" (1/1) ... [2025-02-08 01:52:48,405 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:52:48" (1/1) ... [2025-02-08 01:52:48,412 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 01:52:48,413 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 01:52:48,413 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 01:52:48,418 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 01:52:48,419 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:52:48" (1/1) ... [2025-02-08 01:52:48,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:52:48,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:52:48,456 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 01:52:48,460 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 01:52:48,485 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2025-02-08 01:52:48,486 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2025-02-08 01:52:48,487 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_remove [2025-02-08 01:52:48,487 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_remove [2025-02-08 01:52:48,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 01:52:48,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 01:52:48,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 01:52:48,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-08 01:52:48,488 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-08 01:52:48,488 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-08 01:52:48,488 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2025-02-08 01:52:48,488 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2025-02-08 01:52:48,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 01:52:48,488 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2025-02-08 01:52:48,488 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2025-02-08 01:52:48,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 01:52:48,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-08 01:52:48,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-08 01:52:48,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-02-08 01:52:48,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 01:52:48,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 01:52:48,489 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_empty [2025-02-08 01:52:48,489 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_empty [2025-02-08 01:52:48,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-02-08 01:52:48,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-02-08 01:52:48,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-02-08 01:52:48,489 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-02-08 01:52:48,489 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-02-08 01:52:48,489 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-02-08 01:52:48,489 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-08 01:52:48,489 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-08 01:52:48,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-08 01:52:48,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-08 01:52:48,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-08 01:52:48,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-02-08 01:52:48,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-02-08 01:52:48,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-02-08 01:52:48,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-02-08 01:52:48,491 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2025-02-08 01:52:48,491 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2025-02-08 01:52:48,491 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2025-02-08 01:52:48,492 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2025-02-08 01:52:48,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 01:52:48,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 01:52:48,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-08 01:52:48,771 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 01:52:48,773 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 01:52:48,861 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 01:52:48,905 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L266: havoc #t~nondet9; [2025-02-08 01:52:48,950 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 01:52:49,165 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 01:52:49,165 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L4700: havoc #t~ret311#1; [2025-02-08 01:52:49,171 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L4685: havoc #t~mem302.base, #t~mem302.offset; [2025-02-08 01:52:49,236 INFO L? ?]: Removed 97 outVars from TransFormulas that were not future-live. [2025-02-08 01:52:49,237 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 01:52:49,249 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 01:52:49,251 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 01:52:49,252 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:52:49 BoogieIcfgContainer [2025-02-08 01:52:49,252 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 01:52:49,254 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 01:52:49,254 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 01:52:49,259 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 01:52:49,259 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 01:52:46" (1/3) ... [2025-02-08 01:52:49,260 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4720965f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:52:49, skipping insertion in model container [2025-02-08 01:52:49,260 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:52:48" (2/3) ... [2025-02-08 01:52:49,262 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4720965f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:52:49, skipping insertion in model container [2025-02-08 01:52:49,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:52:49" (3/3) ... [2025-02-08 01:52:49,263 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_linked_list_pop_back_harness.i [2025-02-08 01:52:49,279 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 01:52:49,281 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_linked_list_pop_back_harness.i that has 13 procedures, 136 locations, 1 initial locations, 7 loop locations, and 1 error locations. [2025-02-08 01:52:49,337 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 01:52:49,348 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;@49892f9c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 01:52:49,349 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-08 01:52:49,353 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 01:52:49,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2025-02-08 01:52:49,364 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 01:52:49,365 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 01:52:49,365 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 01:52:49,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:52:49,369 INFO L85 PathProgramCache]: Analyzing trace with hash 904182836, now seen corresponding path program 1 times [2025-02-08 01:52:49,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:52:49,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294415475] [2025-02-08 01:52:49,375 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:52:49,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:52:49,536 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-02-08 01:52:49,707 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-02-08 01:52:49,707 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:52:49,707 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:52:50,708 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 01:52:50,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:52:50,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294415475] [2025-02-08 01:52:50,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294415475] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:52:50,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340697132] [2025-02-08 01:52:50,710 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:52:50,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:52:50,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:52:50,714 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 01:52:50,716 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 01:52:50,865 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-02-08 01:52:50,950 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-02-08 01:52:50,951 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:52:50,951 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:52:50,955 INFO L256 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 72 conjuncts are in the unsatisfiable core [2025-02-08 01:52:50,970 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:52:51,164 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 01:52:51,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2025-02-08 01:52:54,093 INFO L349 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2025-02-08 01:52:54,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 13 [2025-02-08 01:52:54,135 INFO L349 Elim1Store]: treesize reduction 30, result has 43.4 percent of original size [2025-02-08 01:52:54,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 37 treesize of output 39 [2025-02-08 01:52:54,198 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 01:52:54,198 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:53:07,140 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 84 treesize of output 80 [2025-02-08 01:53:07,172 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 78 treesize of output 74 [2025-02-08 01:53:07,356 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 01:53:07,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340697132] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-08 01:53:07,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-08 01:53:07,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [6, 16] total 33 [2025-02-08 01:53:07,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909744456] [2025-02-08 01:53:07,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:53:07,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-08 01:53:07,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:53:07,384 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-08 01:53:07,386 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=949, Unknown=3, NotChecked=0, Total=1056 [2025-02-08 01:53:07,388 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 01:53:08,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 01:53:08,267 INFO L93 Difference]: Finished difference Result 264 states and 404 transitions. [2025-02-08 01:53:08,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-08 01:53:08,269 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 01:53:08,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 01:53:08,276 INFO L225 Difference]: With dead ends: 264 [2025-02-08 01:53:08,277 INFO L226 Difference]: Without dead ends: 119 [2025-02-08 01:53:08,283 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 189 SyntacticMatches, 16 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=127, Invalid=1202, Unknown=3, NotChecked=0, Total=1332 [2025-02-08 01:53:08,285 INFO L435 NwaCegarLoop]: 159 mSDtfsCounter, 9 mSDsluCounter, 1755 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1914 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-08 01:53:08,286 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1914 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 605 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-08 01:53:08,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2025-02-08 01:53:08,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2025-02-08 01:53:08,318 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 01:53:08,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 159 transitions. [2025-02-08 01:53:08,329 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 159 transitions. Word has length 116 [2025-02-08 01:53:08,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 01:53:08,330 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 159 transitions. [2025-02-08 01:53:08,331 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 01:53:08,331 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 159 transitions. [2025-02-08 01:53:08,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2025-02-08 01:53:08,333 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 01:53:08,334 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 01:53:08,341 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 01:53:08,534 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 01:53:08,535 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 01:53:08,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:53:08,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1350519530, now seen corresponding path program 1 times [2025-02-08 01:53:08,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:53:08,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124589967] [2025-02-08 01:53:08,536 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:53:08,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:53:08,571 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 117 statements into 1 equivalence classes. [2025-02-08 01:53:08,625 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 117 of 117 statements. [2025-02-08 01:53:08,626 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:53:08,626 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:53:09,069 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 20 proven. 8 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2025-02-08 01:53:09,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:53:09,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124589967] [2025-02-08 01:53:09,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124589967] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:53:09,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140977569] [2025-02-08 01:53:09,070 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:53:09,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:53:09,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:53:09,073 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 01:53:09,075 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 01:53:09,213 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 117 statements into 1 equivalence classes. [2025-02-08 01:53:09,289 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 117 of 117 statements. [2025-02-08 01:53:09,290 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:53:09,290 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:53:09,294 INFO L256 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 72 conjuncts are in the unsatisfiable core [2025-02-08 01:53:09,305 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:53:09,315 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 01:53:09,430 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 01:53:09,437 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 01:53:09,488 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-02-08 01:53:09,489 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 01:53:09,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 01:53:09,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 01:53:09,502 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 01:53:09,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 01:53:09,510 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 0 case distinctions, treesize of input 26 treesize of output 28 [2025-02-08 01:53:09,521 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 25 treesize of output 18 [2025-02-08 01:53:09,536 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 01:53:09,612 INFO L349 Elim1Store]: treesize reduction 42, result has 20.8 percent of original size [2025-02-08 01:53:09,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 115 treesize of output 119 [2025-02-08 01:53:09,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 01:53:09,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 01:53:09,622 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 90 [2025-02-08 01:53:09,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 01:53:09,632 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 45 treesize of output 40 [2025-02-08 01:53:09,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 25 [2025-02-08 01:53:09,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 22 [2025-02-08 01:53:12,571 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 15 proven. 40 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2025-02-08 01:53:12,571 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:53:13,040 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset| 24)) (.cse2 (+ 16 |c_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.offset|))) (and (forall ((|ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| Int) (v_ArrVal_180 (Array Int Int))) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_180))) (store .cse0 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse0 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 |ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset|))) |c_ULTIMATE.start_aws_linked_list_pop_back_harness_~#list~0#1.base|) .cse2) 0)) (forall ((v_ArrVal_181 (Array Int Int))) (= (select (select (let ((.cse3 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_181))) (store .cse3 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse3 |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_back_harness_~#list~0#1.base|) .cse2) 0)))) is different from false [2025-02-08 01:53:13,161 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-08 01:53:13,162 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-08 01:53:13,221 INFO L349 Elim1Store]: treesize reduction 86, result has 45.2 percent of original size [2025-02-08 01:53:13,221 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 173 treesize of output 202 [2025-02-08 01:53:13,233 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-08 01:53:13,234 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-08 01:53:13,305 INFO L349 Elim1Store]: treesize reduction 86, result has 45.2 percent of original size [2025-02-08 01:53:13,306 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 231 treesize of output 260 [2025-02-08 01:53:13,326 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 01:53:13,327 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 290 treesize of output 288 [2025-02-08 01:53:13,339 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 247 treesize of output 235 [2025-02-08 01:53:13,358 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 01:53:13,358 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 342 treesize of output 320 [2025-02-08 01:53:13,373 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 287 treesize of output 275 [2025-02-08 01:53:13,408 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 01:53:14,107 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-08 01:53:14,120 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 01:53:14,121 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 311 treesize of output 309 [2025-02-08 01:53:14,950 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 7 treesize of output 3 [2025-02-08 01:53:14,960 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 7 treesize of output 3 [2025-02-08 01:53:14,985 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 7 treesize of output 3 [2025-02-08 01:53:14,989 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 7 treesize of output 3 [2025-02-08 01:53:14,996 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 7 treesize of output 3 [2025-02-08 01:53:15,014 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 7 treesize of output 3 [2025-02-08 01:53:15,035 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 01:53:15,036 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 516 treesize of output 466 [2025-02-08 01:53:16,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140977569] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:53:16,273 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 01:53:16,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 12] total 17 [2025-02-08 01:53:16,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436986152] [2025-02-08 01:53:16,273 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 01:53:16,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-08 01:53:16,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:53:16,277 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-08 01:53:16,277 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=529, Unknown=2, NotChecked=46, Total=650 [2025-02-08 01:53:16,277 INFO L87 Difference]: Start difference. First operand 119 states and 159 transitions. Second operand has 17 states, 16 states have (on average 5.0625) internal successors, (81), 16 states have internal predecessors, (81), 8 states have call successors, (29), 4 states have call predecessors, (29), 6 states have return successors, (28), 8 states have call predecessors, (28), 8 states have call successors, (28) [2025-02-08 01:53:17,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 01:53:17,592 INFO L93 Difference]: Finished difference Result 181 states and 238 transitions. [2025-02-08 01:53:17,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-02-08 01:53:17,593 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 5.0625) internal successors, (81), 16 states have internal predecessors, (81), 8 states have call successors, (29), 4 states have call predecessors, (29), 6 states have return successors, (28), 8 states have call predecessors, (28), 8 states have call successors, (28) Word has length 117 [2025-02-08 01:53:17,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 01:53:17,594 INFO L225 Difference]: With dead ends: 181 [2025-02-08 01:53:17,594 INFO L226 Difference]: Without dead ends: 0 [2025-02-08 01:53:17,595 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 182 SyntacticMatches, 24 SemanticMatches, 41 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=214, Invalid=1510, Unknown=2, NotChecked=80, Total=1806 [2025-02-08 01:53:17,596 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 72 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-08 01:53:17,596 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 351 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-08 01:53:17,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-02-08 01:53:17,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-02-08 01:53:17,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:53:17,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-02-08 01:53:17,597 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 117 [2025-02-08 01:53:17,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 01:53:17,597 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-08 01:53:17,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 5.0625) internal successors, (81), 16 states have internal predecessors, (81), 8 states have call successors, (29), 4 states have call predecessors, (29), 6 states have return successors, (28), 8 states have call predecessors, (28), 8 states have call successors, (28) [2025-02-08 01:53:17,598 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-02-08 01:53:17,598 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-02-08 01:53:17,601 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-02-08 01:53:17,615 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 01:53:17,804 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 01:53:17,807 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-02-08 01:53:17,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-02-08 01:53:18,517 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-08 01:53:18,527 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2025-02-08 01:53:18,528 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#valid,GLOBAL] [2025-02-08 01:53:18,528 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~list!offset [2025-02-08 01:53:18,528 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~#list~0!offset [2025-02-08 01:53:18,528 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~list!base [2025-02-08 01:53:18,528 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~#list~0!base [2025-02-08 01:53:18,529 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.02 01:53:18 BoogieIcfgContainer [2025-02-08 01:53:18,529 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-08 01:53:18,530 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-08 01:53:18,530 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-08 01:53:18,530 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-08 01:53:18,531 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:52:49" (3/4) ... [2025-02-08 01:53:18,533 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-08 01:53:18,539 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure aws_linked_list_node_next_is_valid [2025-02-08 01:53:18,539 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure aws_linked_list_remove [2025-02-08 01:53:18,539 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure aws_linked_list_node_prev_is_valid [2025-02-08 01:53:18,539 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2025-02-08 01:53:18,541 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure #Ultimate.C_memset#1 [2025-02-08 01:53:18,541 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure #Ultimate.C_memset#0 [2025-02-08 01:53:18,542 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure nondet_uint64_t [2025-02-08 01:53:18,542 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure #Ultimate.C_memset#2 [2025-02-08 01:53:18,542 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure aws_is_mem_zeroed [2025-02-08 01:53:18,542 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2025-02-08 01:53:18,543 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure aws_linked_list_is_valid [2025-02-08 01:53:18,543 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure aws_linked_list_empty [2025-02-08 01:53:18,552 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 31 nodes and edges [2025-02-08 01:53:18,553 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2025-02-08 01:53:18,553 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2025-02-08 01:53:18,554 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-02-08 01:53:18,554 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-02-08 01:53:18,555 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-02-08 01:53:18,665 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-08 01:53:18,665 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-08 01:53:18,665 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-08 01:53:18,665 INFO L158 Benchmark]: Toolchain (without parser) took 32549.09ms. Allocated memory was 167.8MB in the beginning and 536.9MB in the end (delta: 369.1MB). Free memory was 116.8MB in the beginning and 269.2MB in the end (delta: -152.4MB). Peak memory consumption was 209.5MB. Max. memory is 16.1GB. [2025-02-08 01:53:18,666 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 201.3MB. Free memory is still 117.1MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 01:53:18,666 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2087.67ms. Allocated memory is still 167.8MB. Free memory was 116.8MB in the beginning and 72.2MB in the end (delta: 44.6MB). Peak memory consumption was 102.8MB. Max. memory is 16.1GB. [2025-02-08 01:53:18,666 INFO L158 Benchmark]: Boogie Procedure Inliner took 106.61ms. Allocated memory is still 167.8MB. Free memory was 72.2MB in the beginning and 67.1MB in the end (delta: 5.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 01:53:18,666 INFO L158 Benchmark]: Boogie Preprocessor took 96.20ms. Allocated memory is still 167.8MB. Free memory was 67.1MB in the beginning and 61.3MB in the end (delta: 5.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 01:53:18,666 INFO L158 Benchmark]: IcfgBuilder took 838.74ms. Allocated memory is still 167.8MB. Free memory was 61.3MB in the beginning and 99.2MB in the end (delta: -37.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-08 01:53:18,667 INFO L158 Benchmark]: TraceAbstraction took 29275.02ms. Allocated memory was 167.8MB in the beginning and 536.9MB in the end (delta: 369.1MB). Free memory was 99.2MB in the beginning and 281.6MB in the end (delta: -182.3MB). Peak memory consumption was 183.3MB. Max. memory is 16.1GB. [2025-02-08 01:53:18,667 INFO L158 Benchmark]: Witness Printer took 134.91ms. Allocated memory is still 536.9MB. Free memory was 281.6MB in the beginning and 269.2MB in the end (delta: 12.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 01:53:18,668 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 201.3MB. Free memory is still 117.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2087.67ms. Allocated memory is still 167.8MB. Free memory was 116.8MB in the beginning and 72.2MB in the end (delta: 44.6MB). Peak memory consumption was 102.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 106.61ms. Allocated memory is still 167.8MB. Free memory was 72.2MB in the beginning and 67.1MB in the end (delta: 5.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 96.20ms. Allocated memory is still 167.8MB. Free memory was 67.1MB in the beginning and 61.3MB in the end (delta: 5.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 838.74ms. Allocated memory is still 167.8MB. Free memory was 61.3MB in the beginning and 99.2MB in the end (delta: -37.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 29275.02ms. Allocated memory was 167.8MB in the beginning and 536.9MB in the end (delta: 369.1MB). Free memory was 99.2MB in the beginning and 281.6MB in the end (delta: -182.3MB). Peak memory consumption was 183.3MB. Max. memory is 16.1GB. * Witness Printer took 134.91ms. Allocated memory is still 536.9MB. Free memory was 281.6MB in the beginning and 269.2MB in the end (delta: 12.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#valid,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~list!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~#list~0!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~list!base - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~#list~0!base * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 223]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 13 procedures, 136 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 28.5s, OverallIterations: 2, TraceHistogramMax: 9, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 87 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 81 mSDsluCounter, 2265 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2074 mSDsCounter, 43 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1020 IncrementalHoareTripleChecker+Invalid, 1063 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 43 mSolverCounterUnsat, 191 mSDtfsCounter, 1020 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 487 GetRequests, 371 SyntacticMatches, 40 SemanticMatches, 76 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 16.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=128occurred in iteration=0, InterpolantAutomatonStates: 35, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 24.8s InterpolantComputationTime, 466 NumberOfCodeBlocks, 466 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 577 ConstructedInterpolants, 177 QuantifiedInterpolants, 10443 SizeOfPredicates, 18 NumberOfNonLiveVariables, 929 ConjunctsInSsa, 144 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 888/977 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 2337]: Location Invariant Derived location invariant: 0 - InvariantResult [Line: 4678]: Location Invariant Derived location invariant: 0 RESULT: Ultimate proved your program to be correct! [2025-02-08 01:53:18,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE