./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_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_array_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 4e3d62ab3962e5958dc41169c7885079de47f5dcf75079068205793f151a2e2b --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 01:28:36,427 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 01:28:36,491 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-02-08 01:28:36,495 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 01:28:36,497 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 01:28:36,519 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 01:28:36,521 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 01:28:36,521 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 01:28:36,522 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 01:28:36,522 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 01:28:36,522 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 01:28:36,522 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 01:28:36,523 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 01:28:36,523 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 01:28:36,523 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 01:28:36,523 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 01:28:36,524 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 01:28:36,524 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 01:28:36,524 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 01:28:36,524 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 01:28:36,524 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 01:28:36,524 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 01:28:36,524 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 01:28:36,524 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 01:28:36,524 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 01:28:36,524 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 01:28:36,524 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 01:28:36,524 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 01:28:36,525 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 01:28:36,525 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:28:36,525 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 01:28:36,525 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 01:28:36,525 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 01:28:36,525 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 01:28:36,526 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 01:28:36,526 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 01:28:36,526 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 01:28:36,526 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 01:28:36,526 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 01:28:36,526 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 01:28:36,526 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 -> 4e3d62ab3962e5958dc41169c7885079de47f5dcf75079068205793f151a2e2b [2025-02-08 01:28:36,728 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 01:28:36,736 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 01:28:36,738 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 01:28:36,739 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 01:28:36,739 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 01:28:36,740 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i [2025-02-08 01:28:37,897 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/02a151447/9c91eb1dec054185a705a96db9e13405/FLAGc9e8873a5 [2025-02-08 01:28:38,371 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 01:28:38,373 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i [2025-02-08 01:28:38,398 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/02a151447/9c91eb1dec054185a705a96db9e13405/FLAGc9e8873a5 [2025-02-08 01:28:38,476 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/02a151447/9c91eb1dec054185a705a96db9e13405 [2025-02-08 01:28:38,477 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 01:28:38,478 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 01:28:38,479 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 01:28:38,479 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 01:28:38,485 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 01:28:38,486 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:28:38" (1/1) ... [2025-02-08 01:28:38,486 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17654bc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:28:38, skipping insertion in model container [2025-02-08 01:28:38,486 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:28:38" (1/1) ... [2025-02-08 01:28:38,540 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 01:28:38,712 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i[4497,4510] [2025-02-08 01:28:38,720 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i[4557,4570] [2025-02-08 01:28:39,286 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:28:39,286 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:28:39,286 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:28:39,287 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:28:39,287 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:28:39,296 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:28:39,296 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:28:39,297 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:28:39,298 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:28:39,299 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:28:39,299 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:28:39,300 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:28:39,300 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:28:39,583 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:28:39,590 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:28:39,625 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:28:39,651 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 01:28:39,661 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i[4497,4510] [2025-02-08 01:28:39,661 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i[4557,4570] [2025-02-08 01:28:39,724 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:28:39,725 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:28:39,725 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:28:39,725 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:28:39,726 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:28:39,732 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:28:39,736 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:28:39,736 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:28:39,736 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:28:39,737 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:28:39,738 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:28:39,740 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:28:39,740 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:28:39,840 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:28:39,843 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:28:39,846 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7769-7780] [2025-02-08 01:28:39,857 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:28:39,997 INFO L204 MainTranslator]: Completed translation [2025-02-08 01:28:39,998 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:28:39 WrapperNode [2025-02-08 01:28:39,998 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 01:28:39,999 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 01:28:39,999 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 01:28:39,999 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 01:28:40,003 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:28:39" (1/1) ... [2025-02-08 01:28:40,062 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:28:39" (1/1) ... [2025-02-08 01:28:40,109 INFO L138 Inliner]: procedures = 680, calls = 1695, calls flagged for inlining = 52, calls inlined = 8, statements flattened = 617 [2025-02-08 01:28:40,111 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 01:28:40,111 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 01:28:40,111 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 01:28:40,111 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 01:28:40,117 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:28:39" (1/1) ... [2025-02-08 01:28:40,117 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:28:39" (1/1) ... [2025-02-08 01:28:40,123 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:28:39" (1/1) ... [2025-02-08 01:28:40,173 INFO L175 MemorySlicer]: Split 319 memory accesses to 6 slices as follows [238, 6, 2, 62, 8, 3]. 75 percent of accesses are in the largest equivalence class. The 24 initializations are split as follows [6, 0, 2, 10, 5, 1]. The 240 writes are split as follows [232, 2, 0, 4, 1, 1]. [2025-02-08 01:28:40,177 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:28:39" (1/1) ... [2025-02-08 01:28:40,178 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:28:39" (1/1) ... [2025-02-08 01:28:40,208 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:28:39" (1/1) ... [2025-02-08 01:28:40,211 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:28:39" (1/1) ... [2025-02-08 01:28:40,220 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:28:39" (1/1) ... [2025-02-08 01:28:40,222 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:28:39" (1/1) ... [2025-02-08 01:28:40,230 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 01:28:40,231 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 01:28:40,232 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 01:28:40,232 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 01:28:40,233 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:28:39" (1/1) ... [2025-02-08 01:28:40,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:28:40,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:28:40,258 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 01:28:40,268 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 01:28:40,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 01:28:40,281 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2025-02-08 01:28:40,282 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2025-02-08 01:28:40,282 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2025-02-08 01:28:40,282 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2025-02-08 01:28:40,282 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2025-02-08 01:28:40,282 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2025-02-08 01:28:40,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2025-02-08 01:28:40,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2025-02-08 01:28:40,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2025-02-08 01:28:40,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2025-02-08 01:28:40,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2025-02-08 01:28:40,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2025-02-08 01:28:40,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 01:28:40,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 01:28:40,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-08 01:28:40,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-02-08 01:28:40,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-02-08 01:28:40,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-02-08 01:28:40,284 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2025-02-08 01:28:40,284 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2025-02-08 01:28:40,284 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-08 01:28:40,284 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-08 01:28:40,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 01:28:40,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 01:28:40,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-08 01:28:40,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-08 01:28:40,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-02-08 01:28:40,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-02-08 01:28:40,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2025-02-08 01:28:40,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2025-02-08 01:28:40,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 01:28:40,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 01:28:40,285 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2025-02-08 01:28:40,285 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2025-02-08 01:28:40,285 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2025-02-08 01:28:40,285 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2025-02-08 01:28:40,285 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2025-02-08 01:28:40,285 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2025-02-08 01:28:40,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2025-02-08 01:28:40,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2025-02-08 01:28:40,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2025-02-08 01:28:40,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2025-02-08 01:28:40,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2025-02-08 01:28:40,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2025-02-08 01:28:40,286 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2025-02-08 01:28:40,286 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2025-02-08 01:28:40,286 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-08 01:28:40,286 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-08 01:28:40,286 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2025-02-08 01:28:40,286 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2025-02-08 01:28:40,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-08 01:28:40,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-08 01:28:40,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-08 01:28:40,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-02-08 01:28:40,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-02-08 01:28:40,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-02-08 01:28:40,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2025-02-08 01:28:40,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-02-08 01:28:40,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-02-08 01:28:40,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-02-08 01:28:40,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-02-08 01:28:40,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2025-02-08 01:28:40,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2025-02-08 01:28:40,288 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2025-02-08 01:28:40,288 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2025-02-08 01:28:40,288 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2025-02-08 01:28:40,288 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2025-02-08 01:28:40,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 01:28:40,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 01:28:40,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-08 01:28:40,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-02-08 01:28:40,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-02-08 01:28:40,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-02-08 01:28:40,289 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2025-02-08 01:28:40,289 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2025-02-08 01:28:40,289 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2025-02-08 01:28:40,289 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2025-02-08 01:28:40,289 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2025-02-08 01:28:40,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2025-02-08 01:28:40,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 01:28:40,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 01:28:40,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-08 01:28:40,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-08 01:28:40,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-02-08 01:28:40,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-02-08 01:28:40,505 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 01:28:40,506 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 01:28:40,543 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L2782: havoc #t~malloc77.base, #t~malloc77.offset; [2025-02-08 01:28:40,575 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L2588: havoc #t~ret57#1; [2025-02-08 01:28:40,579 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L7390: havoc #t~ret682.base, #t~ret682.offset; [2025-02-08 01:28:40,659 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L3268: call ULTIMATE.dealloc(~#required_size~0.base, ~#required_size~0.offset);havoc ~#required_size~0.base, ~#required_size~0.offset; [2025-02-08 01:28:40,665 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L261: havoc #t~nondet4; [2025-02-08 01:28:46,022 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L263: havoc nondet_size_t_#t~nondet6#1;save_byte_from_array_#t~ret628#1 := nondet_size_t_#res#1;havoc nondet_size_t_#t~nondet6#1;assume { :end_inline_nondet_size_t } true;call write~int#1(save_byte_from_array_#t~ret628#1, save_byte_from_array_~storage#1.base, save_byte_from_array_~storage#1.offset, 8);havoc save_byte_from_array_#t~ret628#1;call save_byte_from_array_#t~mem629#1 := read~int#1(save_byte_from_array_~storage#1.base, save_byte_from_array_~storage#1.offset, 8); [2025-02-08 01:28:46,023 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L7185-1: SUMMARY for call assume_abort_if_not((if 0 == (if save_byte_from_array_#t~mem629#1 % 18446744073709551616 < save_byte_from_array_~size#1 % 18446744073709551616 then 1 else 0) then 0 else 1)); srcloc: null [2025-02-08 01:28:46,023 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L7185: havoc save_byte_from_array_#t~mem629#1;call save_byte_from_array_#t~mem630#1 := read~int#1(save_byte_from_array_~storage#1.base, save_byte_from_array_~storage#1.offset, 8);call save_byte_from_array_#t~mem631#1 := read~int#4(save_byte_from_array_~array#1.base, save_byte_from_array_~array#1.offset + (if save_byte_from_array_#t~mem630#1 % 18446744073709551616 % 18446744073709551616 <= 9223372036854775807 then save_byte_from_array_#t~mem630#1 % 18446744073709551616 % 18446744073709551616 else save_byte_from_array_#t~mem630#1 % 18446744073709551616 % 18446744073709551616 - 18446744073709551616), 1);call write~int#1(save_byte_from_array_#t~mem631#1, save_byte_from_array_~storage#1.base, 8 + save_byte_from_array_~storage#1.offset, 1);havoc save_byte_from_array_#t~mem630#1;havoc save_byte_from_array_#t~mem631#1; [2025-02-08 01:28:46,245 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L3445: havoc #t~ret230; [2025-02-08 01:28:46,245 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L3432: havoc ~last_item_offset~1; [2025-02-08 01:28:46,309 INFO L? ?]: Removed 108 outVars from TransFormulas that were not future-live. [2025-02-08 01:28:46,309 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 01:28:46,318 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 01:28:46,320 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 01:28:46,320 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:28:46 BoogieIcfgContainer [2025-02-08 01:28:46,320 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 01:28:46,324 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 01:28:46,324 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 01:28:46,328 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 01:28:46,328 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 01:28:38" (1/3) ... [2025-02-08 01:28:46,328 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e18b5f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:28:46, skipping insertion in model container [2025-02-08 01:28:46,328 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:28:39" (2/3) ... [2025-02-08 01:28:46,328 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e18b5f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:28:46, skipping insertion in model container [2025-02-08 01:28:46,328 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:28:46" (3/3) ... [2025-02-08 01:28:46,329 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_array_list_pop_back_harness.i [2025-02-08 01:28:46,340 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 01:28:46,341 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_array_list_pop_back_harness.i that has 17 procedures, 163 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-08 01:28:46,381 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 01:28:46,391 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;@1f30903b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 01:28:46,392 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-08 01:28:46,396 INFO L276 IsEmpty]: Start isEmpty. Operand has 163 states, 95 states have (on average 1.2105263157894737) internal successors, (115), 99 states have internal predecessors, (115), 47 states have call successors, (47), 16 states have call predecessors, (47), 16 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2025-02-08 01:28:46,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-02-08 01:28:46,405 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 01:28:46,406 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:28:46,406 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 01:28:46,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:28:46,411 INFO L85 PathProgramCache]: Analyzing trace with hash -595649359, now seen corresponding path program 1 times [2025-02-08 01:28:46,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:28:46,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178658236] [2025-02-08 01:28:46,419 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:28:46,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:28:50,842 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-02-08 01:28:51,136 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-02-08 01:28:51,136 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:28:51,139 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:28:51,502 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2025-02-08 01:28:51,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:28:51,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178658236] [2025-02-08 01:28:51,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178658236] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:28:51,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481708682] [2025-02-08 01:28:51,503 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:28:51,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:28:51,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:28:51,505 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 01:28:51,516 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 01:28:55,800 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-02-08 01:28:56,208 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-02-08 01:28:56,209 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:28:56,209 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:28:56,225 INFO L256 TraceCheckSpWp]: Trace formula consists of 4164 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-02-08 01:28:56,231 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:28:56,244 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2025-02-08 01:28:56,244 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 01:28:56,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481708682] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:28:56,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 01:28:56,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-02-08 01:28:56,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802161691] [2025-02-08 01:28:56,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:28:56,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-08 01:28:56,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:28:56,259 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-08 01:28:56,259 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-08 01:28:56,261 INFO L87 Difference]: Start difference. First operand has 163 states, 95 states have (on average 1.2105263157894737) internal successors, (115), 99 states have internal predecessors, (115), 47 states have call successors, (47), 16 states have call predecessors, (47), 16 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) Second operand has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-02-08 01:28:56,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 01:28:56,284 INFO L93 Difference]: Finished difference Result 320 states and 443 transitions. [2025-02-08 01:28:56,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-08 01:28:56,285 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 83 [2025-02-08 01:28:56,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 01:28:56,290 INFO L225 Difference]: With dead ends: 320 [2025-02-08 01:28:56,290 INFO L226 Difference]: Without dead ends: 155 [2025-02-08 01:28:56,293 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-08 01:28:56,294 INFO L435 NwaCegarLoop]: 207 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 01:28:56,295 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 01:28:56,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2025-02-08 01:28:56,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2025-02-08 01:28:56,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 92 states have (on average 1.1630434782608696) internal successors, (107), 93 states have internal predecessors, (107), 46 states have call successors, (46), 16 states have call predecessors, (46), 16 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2025-02-08 01:28:56,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 198 transitions. [2025-02-08 01:28:56,323 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 198 transitions. Word has length 83 [2025-02-08 01:28:56,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 01:28:56,323 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 198 transitions. [2025-02-08 01:28:56,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-02-08 01:28:56,323 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 198 transitions. [2025-02-08 01:28:56,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-02-08 01:28:56,325 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 01:28:56,326 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:28:56,339 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 01:28:56,530 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 01:28:56,530 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 01:28:56,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:28:56,531 INFO L85 PathProgramCache]: Analyzing trace with hash 720160111, now seen corresponding path program 1 times [2025-02-08 01:28:56,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:28:56,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422975741] [2025-02-08 01:28:56,531 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:28:56,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:29:00,175 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-02-08 01:29:00,262 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-02-08 01:29:00,262 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:29:00,262 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:29:01,109 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2025-02-08 01:29:01,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:29:01,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422975741] [2025-02-08 01:29:01,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422975741] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:29:01,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962009876] [2025-02-08 01:29:01,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:29:01,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:29:01,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:29:01,114 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 01:29:01,120 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 01:29:05,396 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-02-08 01:29:05,779 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-02-08 01:29:05,780 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:29:05,780 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:29:05,796 INFO L256 TraceCheckSpWp]: Trace formula consists of 4164 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 01:29:05,806 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:29:06,264 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-02-08 01:29:06,264 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 01:29:06,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962009876] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:29:06,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 01:29:06,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2025-02-08 01:29:06,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628543065] [2025-02-08 01:29:06,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:29:06,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:29:06,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:29:06,265 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:29:06,266 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-02-08 01:29:06,266 INFO L87 Difference]: Start difference. First operand 155 states and 198 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2025-02-08 01:29:07,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 01:29:07,086 INFO L93 Difference]: Finished difference Result 276 states and 360 transitions. [2025-02-08 01:29:07,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:29:07,088 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 83 [2025-02-08 01:29:07,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 01:29:07,090 INFO L225 Difference]: With dead ends: 276 [2025-02-08 01:29:07,090 INFO L226 Difference]: Without dead ends: 157 [2025-02-08 01:29:07,091 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-02-08 01:29:07,091 INFO L435 NwaCegarLoop]: 179 mSDtfsCounter, 31 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-02-08 01:29:07,091 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 659 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-02-08 01:29:07,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2025-02-08 01:29:07,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2025-02-08 01:29:07,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 93 states have (on average 1.1612903225806452) internal successors, (108), 95 states have internal predecessors, (108), 46 states have call successors, (46), 16 states have call predecessors, (46), 17 states have return successors, (50), 45 states have call predecessors, (50), 45 states have call successors, (50) [2025-02-08 01:29:07,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 204 transitions. [2025-02-08 01:29:07,102 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 204 transitions. Word has length 83 [2025-02-08 01:29:07,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 01:29:07,103 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 204 transitions. [2025-02-08 01:29:07,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2025-02-08 01:29:07,103 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 204 transitions. [2025-02-08 01:29:07,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2025-02-08 01:29:07,105 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 01:29:07,105 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:29:07,118 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 01:29:07,307 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 01:29:07,308 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 01:29:07,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:29:07,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1744778355, now seen corresponding path program 1 times [2025-02-08 01:29:07,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:29:07,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12957480] [2025-02-08 01:29:07,308 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:29:07,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:29:11,104 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-02-08 01:29:11,206 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-02-08 01:29:11,206 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:29:11,206 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:29:11,862 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2025-02-08 01:29:11,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:29:11,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12957480] [2025-02-08 01:29:11,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12957480] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:29:11,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727949690] [2025-02-08 01:29:11,863 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:29:11,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:29:11,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:29:11,865 INFO L229 MonitoredProcess]: Starting monitored process 4 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 01:29:11,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-08 01:29:15,861 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-02-08 01:29:16,247 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-02-08 01:29:16,247 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:29:16,248 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:29:16,263 INFO L256 TraceCheckSpWp]: Trace formula consists of 4286 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 01:29:16,270 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:29:16,320 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-02-08 01:29:16,323 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 01:29:16,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727949690] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:29:16,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 01:29:16,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2025-02-08 01:29:16,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635689201] [2025-02-08 01:29:16,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:29:16,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 01:29:16,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:29:16,325 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 01:29:16,325 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 01:29:16,325 INFO L87 Difference]: Start difference. First operand 157 states and 204 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-02-08 01:29:16,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 01:29:16,463 INFO L93 Difference]: Finished difference Result 280 states and 377 transitions. [2025-02-08 01:29:16,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 01:29:16,463 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 97 [2025-02-08 01:29:16,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 01:29:16,468 INFO L225 Difference]: With dead ends: 280 [2025-02-08 01:29:16,468 INFO L226 Difference]: Without dead ends: 159 [2025-02-08 01:29:16,468 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 01:29:16,469 INFO L435 NwaCegarLoop]: 196 mSDtfsCounter, 0 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 01:29:16,469 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 581 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 01:29:16,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2025-02-08 01:29:16,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2025-02-08 01:29:16,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 95 states have (on average 1.1578947368421053) internal successors, (110), 97 states have internal predecessors, (110), 46 states have call successors, (46), 16 states have call predecessors, (46), 17 states have return successors, (50), 45 states have call predecessors, (50), 45 states have call successors, (50) [2025-02-08 01:29:16,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 206 transitions. [2025-02-08 01:29:16,487 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 206 transitions. Word has length 97 [2025-02-08 01:29:16,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 01:29:16,488 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 206 transitions. [2025-02-08 01:29:16,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-02-08 01:29:16,488 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 206 transitions. [2025-02-08 01:29:16,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2025-02-08 01:29:16,492 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 01:29:16,492 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:29:16,509 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-08 01:29:16,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:29:16,693 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 01:29:16,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:29:16,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1724440980, now seen corresponding path program 1 times [2025-02-08 01:29:16,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:29:16,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143934139] [2025-02-08 01:29:16,694 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:29:16,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:29:20,344 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-02-08 01:29:20,448 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-02-08 01:29:20,448 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:29:20,448 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:29:21,553 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2025-02-08 01:29:21,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:29:21,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143934139] [2025-02-08 01:29:21,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143934139] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:29:21,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912552845] [2025-02-08 01:29:21,553 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:29:21,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:29:21,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:29:21,556 INFO L229 MonitoredProcess]: Starting monitored process 5 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 01:29:21,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-08 01:29:25,790 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-02-08 01:29:26,176 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-02-08 01:29:26,176 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:29:26,176 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:29:26,191 INFO L256 TraceCheckSpWp]: Trace formula consists of 4291 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-08 01:29:26,195 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:29:27,168 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-02-08 01:29:27,169 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 01:29:27,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912552845] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:29:27,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 01:29:27,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2025-02-08 01:29:27,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398126926] [2025-02-08 01:29:27,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:29:27,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 01:29:27,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:29:27,170 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 01:29:27,170 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2025-02-08 01:29:27,170 INFO L87 Difference]: Start difference. First operand 159 states and 206 transitions. Second operand has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2025-02-08 01:29:28,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 01:29:28,613 INFO L93 Difference]: Finished difference Result 275 states and 358 transitions. [2025-02-08 01:29:28,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 01:29:28,613 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 97 [2025-02-08 01:29:28,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 01:29:28,615 INFO L225 Difference]: With dead ends: 275 [2025-02-08 01:29:28,616 INFO L226 Difference]: Without dead ends: 159 [2025-02-08 01:29:28,616 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2025-02-08 01:29:28,617 INFO L435 NwaCegarLoop]: 176 mSDtfsCounter, 49 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-02-08 01:29:28,619 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 965 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-02-08 01:29:28,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2025-02-08 01:29:28,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2025-02-08 01:29:28,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 95 states have (on average 1.1578947368421053) internal successors, (110), 97 states have internal predecessors, (110), 46 states have call successors, (46), 16 states have call predecessors, (46), 17 states have return successors, (47), 45 states have call predecessors, (47), 45 states have call successors, (47) [2025-02-08 01:29:28,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 203 transitions. [2025-02-08 01:29:28,636 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 203 transitions. Word has length 97 [2025-02-08 01:29:28,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 01:29:28,636 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 203 transitions. [2025-02-08 01:29:28,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2025-02-08 01:29:28,636 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 203 transitions. [2025-02-08 01:29:28,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2025-02-08 01:29:28,637 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 01:29:28,637 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:29:28,655 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-08 01:29:28,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:29:28,838 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 01:29:28,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:29:28,839 INFO L85 PathProgramCache]: Analyzing trace with hash -2126705905, now seen corresponding path program 2 times [2025-02-08 01:29:28,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:29:28,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970244444] [2025-02-08 01:29:28,839 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:29:28,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:29:32,424 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 111 statements into 2 equivalence classes. [2025-02-08 01:29:32,840 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 111 of 111 statements. [2025-02-08 01:29:32,841 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:29:32,841 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:29:34,421 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2025-02-08 01:29:34,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:29:34,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970244444] [2025-02-08 01:29:34,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970244444] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:29:34,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:29:34,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-08 01:29:34,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475266361] [2025-02-08 01:29:34,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:29:34,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-08 01:29:34,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:29:34,423 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-08 01:29:34,423 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-08 01:29:34,424 INFO L87 Difference]: Start difference. First operand 159 states and 203 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 7 states have internal predecessors, (44), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2025-02-08 01:29:36,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 01:29:36,496 INFO L93 Difference]: Finished difference Result 272 states and 350 transitions. [2025-02-08 01:29:36,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 01:29:36,496 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 7 states have internal predecessors, (44), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) Word has length 111 [2025-02-08 01:29:36,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 01:29:36,498 INFO L225 Difference]: With dead ends: 272 [2025-02-08 01:29:36,498 INFO L226 Difference]: Without dead ends: 157 [2025-02-08 01:29:36,499 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-02-08 01:29:36,499 INFO L435 NwaCegarLoop]: 173 mSDtfsCounter, 58 mSDsluCounter, 1104 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 1277 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-02-08 01:29:36,499 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 1277 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-02-08 01:29:36,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2025-02-08 01:29:36,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2025-02-08 01:29:36,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 94 states have (on average 1.148936170212766) internal successors, (108), 95 states have internal predecessors, (108), 46 states have call successors, (46), 16 states have call predecessors, (46), 16 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2025-02-08 01:29:36,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 199 transitions. [2025-02-08 01:29:36,507 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 199 transitions. Word has length 111 [2025-02-08 01:29:36,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 01:29:36,508 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 199 transitions. [2025-02-08 01:29:36,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 7 states have internal predecessors, (44), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2025-02-08 01:29:36,508 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 199 transitions. [2025-02-08 01:29:36,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2025-02-08 01:29:36,509 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 01:29:36,509 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:29:36,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 01:29:36,509 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 01:29:36,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:29:36,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1224823121, now seen corresponding path program 1 times [2025-02-08 01:29:36,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:29:36,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156127878] [2025-02-08 01:29:36,510 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:29:36,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:29:40,090 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 139 statements into 1 equivalence classes. [2025-02-08 01:29:41,588 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 139 of 139 statements. [2025-02-08 01:29:41,589 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:29:41,589 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:29:49,021 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2025-02-08 01:29:49,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:29:49,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156127878] [2025-02-08 01:29:49,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156127878] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:29:49,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917459066] [2025-02-08 01:29:49,021 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:29:49,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:29:49,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:29:49,025 INFO L229 MonitoredProcess]: Starting monitored process 6 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 01:29:49,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-08 01:29:53,808 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 139 statements into 1 equivalence classes.