./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 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_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-?-551b009-m [2025-01-09 16:56:40,230 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 16:56:40,308 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-01-09 16:56:40,313 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 16:56:40,313 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 16:56:40,340 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 16:56:40,340 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 16:56:40,341 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 16:56:40,341 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 16:56:40,341 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 16:56:40,341 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 16:56:40,341 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 16:56:40,342 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 16:56:40,342 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 16:56:40,344 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 16:56:40,344 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 16:56:40,344 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 16:56:40,344 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 16:56:40,344 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 16:56:40,344 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 16:56:40,345 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 16:56:40,345 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 16:56:40,345 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 16:56:40,345 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 16:56:40,345 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 16:56:40,345 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 16:56:40,346 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 16:56:40,346 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 16:56:40,346 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 16:56:40,346 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:56:40,346 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 16:56:40,346 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 16:56:40,346 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 16:56:40,347 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 16:56:40,347 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:56:40,347 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 16:56:40,347 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 16:56:40,347 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 16:56:40,347 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 16:56:40,348 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 16:56:40,348 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 16:56:40,348 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 16:56:40,348 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 16:56:40,348 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 16:56:40,348 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 16:56:40,348 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 [2025-01-09 16:56:40,636 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 16:56:40,643 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 16:56:40,646 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 16:56:40,647 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 16:56:40,647 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 16:56:40,648 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i [2025-01-09 16:56:41,961 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ed55a9878/7c8ec8aeab6c436c9ca7fbf738f7fddf/FLAGfdc490a32 [2025-01-09 16:56:42,430 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 16:56:42,430 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i [2025-01-09 16:56:42,464 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ed55a9878/7c8ec8aeab6c436c9ca7fbf738f7fddf/FLAGfdc490a32 [2025-01-09 16:56:42,532 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ed55a9878/7c8ec8aeab6c436c9ca7fbf738f7fddf [2025-01-09 16:56:42,534 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 16:56:42,536 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 16:56:42,538 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 16:56:42,539 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 16:56:42,543 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 16:56:42,544 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:56:42" (1/1) ... [2025-01-09 16:56:42,545 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@452dc1b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:56:42, skipping insertion in model container [2025-01-09 16:56:42,545 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:56:42" (1/1) ... [2025-01-09 16:56:42,616 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 16:56:42,839 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] [2025-01-09 16:56:42,847 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] [2025-01-09 16:56:43,580 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:56:43,581 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:56:43,582 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:56:43,582 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:56:43,583 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:56:43,593 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:56:43,594 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:56:43,595 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:56:43,596 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:56:43,597 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:56:43,598 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:56:43,598 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:56:43,598 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:56:43,992 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:56:43,998 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:56:44,057 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 16:56:44,089 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 16:56:44,107 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] [2025-01-09 16:56:44,108 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] [2025-01-09 16:56:44,184 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:56:44,185 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:56:44,185 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:56:44,185 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:56:44,186 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:56:44,193 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:56:44,196 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:56:44,197 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:56:44,197 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:56:44,198 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:56:44,199 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:56:44,199 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:56:44,199 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:56:44,313 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:56:44,321 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:56:44,327 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7769-7780] [2025-01-09 16:56:44,348 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 16:56:44,562 INFO L204 MainTranslator]: Completed translation [2025-01-09 16:56:44,563 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:56:44 WrapperNode [2025-01-09 16:56:44,563 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 16:56:44,564 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 16:56:44,564 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 16:56:44,564 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 16:56:44,570 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:56:44" (1/1) ... [2025-01-09 16:56:44,655 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:56:44" (1/1) ... [2025-01-09 16:56:44,705 INFO L138 Inliner]: procedures = 680, calls = 1695, calls flagged for inlining = 52, calls inlined = 8, statements flattened = 617 [2025-01-09 16:56:44,705 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 16:56:44,706 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 16:56:44,706 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 16:56:44,706 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 16:56:44,714 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:56:44" (1/1) ... [2025-01-09 16:56:44,714 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:56:44" (1/1) ... [2025-01-09 16:56:44,720 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:56:44" (1/1) ... [2025-01-09 16:56:44,793 INFO L175 MemorySlicer]: Split 319 memory accesses to 6 slices as follows [238, 2, 3, 8, 62, 6]. 75 percent of accesses are in the largest equivalence class. The 24 initializations are split as follows [6, 2, 1, 5, 10, 0]. The 240 writes are split as follows [232, 0, 1, 1, 4, 2]. [2025-01-09 16:56:44,793 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:56:44" (1/1) ... [2025-01-09 16:56:44,793 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:56:44" (1/1) ... [2025-01-09 16:56:44,818 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:56:44" (1/1) ... [2025-01-09 16:56:44,824 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:56:44" (1/1) ... [2025-01-09 16:56:44,832 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:56:44" (1/1) ... [2025-01-09 16:56:44,847 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:56:44" (1/1) ... [2025-01-09 16:56:44,854 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:56:44" (1/1) ... [2025-01-09 16:56:44,869 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 16:56:44,870 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 16:56:44,870 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 16:56:44,870 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 16:56:44,871 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:56:44" (1/1) ... [2025-01-09 16:56:44,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:56:44,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:56:44,907 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 16:56:44,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 16:56:44,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-09 16:56:44,933 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2025-01-09 16:56:44,934 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2025-01-09 16:56:44,935 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2025-01-09 16:56:44,935 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2025-01-09 16:56:44,935 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2025-01-09 16:56:44,935 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2025-01-09 16:56:44,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2025-01-09 16:56:44,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2025-01-09 16:56:44,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2025-01-09 16:56:44,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2025-01-09 16:56:44,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2025-01-09 16:56:44,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2025-01-09 16:56:44,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-09 16:56:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-09 16:56:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-01-09 16:56:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-01-09 16:56:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-01-09 16:56:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-01-09 16:56:44,937 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2025-01-09 16:56:44,937 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2025-01-09 16:56:44,937 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-01-09 16:56:44,937 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-01-09 16:56:44,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-09 16:56:44,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 16:56:44,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-01-09 16:56:44,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-01-09 16:56:44,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-01-09 16:56:44,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-01-09 16:56:44,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2025-01-09 16:56:44,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2025-01-09 16:56:44,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 16:56:44,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 16:56:44,938 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2025-01-09 16:56:44,938 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2025-01-09 16:56:44,938 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2025-01-09 16:56:44,938 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2025-01-09 16:56:44,938 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2025-01-09 16:56:44,938 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2025-01-09 16:56:44,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2025-01-09 16:56:44,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2025-01-09 16:56:44,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2025-01-09 16:56:44,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2025-01-09 16:56:44,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2025-01-09 16:56:44,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2025-01-09 16:56:44,938 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2025-01-09 16:56:44,938 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2025-01-09 16:56:44,938 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-01-09 16:56:44,938 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-01-09 16:56:44,938 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2025-01-09 16:56:44,938 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2025-01-09 16:56:44,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-09 16:56:44,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-01-09 16:56:44,939 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-01-09 16:56:44,939 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-01-09 16:56:44,939 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-01-09 16:56:44,939 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-01-09 16:56:44,939 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2025-01-09 16:56:44,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-01-09 16:56:44,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-01-09 16:56:44,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-01-09 16:56:44,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-01-09 16:56:44,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2025-01-09 16:56:44,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2025-01-09 16:56:44,939 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2025-01-09 16:56:44,939 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2025-01-09 16:56:44,939 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2025-01-09 16:56:44,939 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2025-01-09 16:56:44,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-09 16:56:44,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-09 16:56:44,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-01-09 16:56:44,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-01-09 16:56:44,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-01-09 16:56:44,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-01-09 16:56:44,939 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2025-01-09 16:56:44,939 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2025-01-09 16:56:44,939 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2025-01-09 16:56:44,940 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2025-01-09 16:56:44,940 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2025-01-09 16:56:44,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2025-01-09 16:56:44,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 16:56:44,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-09 16:56:44,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-01-09 16:56:44,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-01-09 16:56:44,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-01-09 16:56:44,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-01-09 16:56:45,202 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 16:56:45,204 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 16:56:51,746 INFO L? ?]: Removed 113 outVars from TransFormulas that were not future-live. [2025-01-09 16:56:51,746 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 16:56:51,760 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 16:56:51,762 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-09 16:56:51,762 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:56:51 BoogieIcfgContainer [2025-01-09 16:56:51,763 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 16:56:51,764 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 16:56:51,765 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 16:56:51,769 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 16:56:51,770 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 04:56:42" (1/3) ... [2025-01-09 16:56:51,770 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c8ed24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:56:51, skipping insertion in model container [2025-01-09 16:56:51,770 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:56:44" (2/3) ... [2025-01-09 16:56:51,771 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c8ed24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:56:51, skipping insertion in model container [2025-01-09 16:56:51,772 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:56:51" (3/3) ... [2025-01-09 16:56:51,773 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_array_list_pop_back_harness.i [2025-01-09 16:56:51,789 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 16:56:51,792 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_array_list_pop_back_harness.i that has 17 procedures, 168 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-01-09 16:56:51,855 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 16:56:51,868 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;@7256cf74, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 16:56:51,869 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 16:56:51,874 INFO L276 IsEmpty]: Start isEmpty. Operand has 168 states, 102 states have (on average 1.196078431372549) internal successors, (122), 103 states have internal predecessors, (122), 48 states have call successors, (48), 16 states have call predecessors, (48), 16 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2025-01-09 16:56:51,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2025-01-09 16:56:51,885 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 16:56:51,885 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, 1] [2025-01-09 16:56:51,886 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 16:56:51,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:56:51,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1746997311, now seen corresponding path program 1 times [2025-01-09 16:56:51,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:56:51,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036710896] [2025-01-09 16:56:51,901 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:56:51,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:56:56,733 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 84 statements into 1 equivalence classes. [2025-01-09 16:56:57,118 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 84 of 84 statements. [2025-01-09 16:56:57,119 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:56:57,119 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:56:57,910 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2025-01-09 16:56:57,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:56:57,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036710896] [2025-01-09 16:56:57,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036710896] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:56:57,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:56:57,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 16:56:57,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63855794] [2025-01-09 16:56:57,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:56:57,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 16:56:57,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:56:57,940 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 16:56:57,941 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 16:56:57,944 INFO L87 Difference]: Start difference. First operand has 168 states, 102 states have (on average 1.196078431372549) internal successors, (122), 103 states have internal predecessors, (122), 48 states have call successors, (48), 16 states have call predecessors, (48), 16 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2025-01-09 16:56:58,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 16:56:58,073 INFO L93 Difference]: Finished difference Result 330 states and 463 transitions. [2025-01-09 16:56:58,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 16:56:58,075 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 84 [2025-01-09 16:56:58,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 16:56:58,083 INFO L225 Difference]: With dead ends: 330 [2025-01-09 16:56:58,083 INFO L226 Difference]: Without dead ends: 164 [2025-01-09 16:56:58,087 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 16:56:58,090 INFO L435 NwaCegarLoop]: 215 mSDtfsCounter, 0 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 16:56:58,090 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 426 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 16:56:58,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2025-01-09 16:56:58,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2025-01-09 16:56:58,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 99 states have (on average 1.1818181818181819) internal successors, (117), 100 states have internal predecessors, (117), 48 states have call successors, (48), 16 states have call predecessors, (48), 16 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2025-01-09 16:56:58,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 212 transitions. [2025-01-09 16:56:58,150 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 212 transitions. Word has length 84 [2025-01-09 16:56:58,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 16:56:58,153 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 212 transitions. [2025-01-09 16:56:58,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2025-01-09 16:56:58,153 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 212 transitions. [2025-01-09 16:56:58,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2025-01-09 16:56:58,156 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 16:56:58,156 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, 1] [2025-01-09 16:56:58,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 16:56:58,157 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 16:56:58,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:56:58,158 INFO L85 PathProgramCache]: Analyzing trace with hash 639512195, now seen corresponding path program 1 times [2025-01-09 16:56:58,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:56:58,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513915483] [2025-01-09 16:56:58,158 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:56:58,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:57:02,890 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 84 statements into 1 equivalence classes. [2025-01-09 16:57:03,059 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 84 of 84 statements. [2025-01-09 16:57:03,060 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:57:03,060 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:57:04,410 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2025-01-09 16:57:04,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:57:04,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513915483] [2025-01-09 16:57:04,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513915483] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:57:04,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877739850] [2025-01-09 16:57:04,411 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:57:04,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:57:04,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:57:04,415 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:57:04,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-09 16:57:09,098 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 84 statements into 1 equivalence classes. [2025-01-09 16:57:09,685 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 84 of 84 statements. [2025-01-09 16:57:09,685 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:57:09,685 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:57:09,709 INFO L256 TraceCheckSpWp]: Trace formula consists of 4164 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-09 16:57:09,718 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:57:10,347 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-01-09 16:57:10,348 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 16:57:10,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877739850] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:57:10,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 16:57:10,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2025-01-09 16:57:10,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503604989] [2025-01-09 16:57:10,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:57:10,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 16:57:10,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:57:10,350 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 16:57:10,351 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-01-09 16:57:10,351 INFO L87 Difference]: Start difference. First operand 164 states and 212 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 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) [2025-01-09 16:57:12,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 16:57:12,408 INFO L93 Difference]: Finished difference Result 292 states and 386 transitions. [2025-01-09 16:57:12,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 16:57:12,409 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 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 84 [2025-01-09 16:57:12,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 16:57:12,412 INFO L225 Difference]: With dead ends: 292 [2025-01-09 16:57:12,412 INFO L226 Difference]: Without dead ends: 166 [2025-01-09 16:57:12,414 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2025-01-09 16:57:12,414 INFO L435 NwaCegarLoop]: 170 mSDtfsCounter, 225 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-01-09 16:57:12,414 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 640 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-01-09 16:57:12,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2025-01-09 16:57:12,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2025-01-09 16:57:12,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 100 states have (on average 1.18) internal successors, (118), 102 states have internal predecessors, (118), 48 states have call successors, (48), 16 states have call predecessors, (48), 17 states have return successors, (52), 47 states have call predecessors, (52), 47 states have call successors, (52) [2025-01-09 16:57:12,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 218 transitions. [2025-01-09 16:57:12,443 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 218 transitions. Word has length 84 [2025-01-09 16:57:12,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 16:57:12,444 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 218 transitions. [2025-01-09 16:57:12,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 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) [2025-01-09 16:57:12,444 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 218 transitions. [2025-01-09 16:57:12,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2025-01-09 16:57:12,448 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 16:57:12,448 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, 1, 1] [2025-01-09 16:57:12,463 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-09 16:57:12,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:57:12,649 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 16:57:12,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:57:12,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1896715901, now seen corresponding path program 1 times [2025-01-09 16:57:12,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:57:12,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195779213] [2025-01-09 16:57:12,650 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:57:12,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:57:16,519 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 99 statements into 1 equivalence classes. [2025-01-09 16:57:16,700 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 99 of 99 statements. [2025-01-09 16:57:16,701 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:57:16,701 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:57:18,569 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2025-01-09 16:57:18,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:57:18,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195779213] [2025-01-09 16:57:18,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195779213] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:57:18,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126900967] [2025-01-09 16:57:18,570 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:57:18,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:57:18,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:57:18,575 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:57:18,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-09 16:57:22,683 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 99 statements into 1 equivalence classes. [2025-01-09 16:57:23,176 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 99 of 99 statements. [2025-01-09 16:57:23,177 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:57:23,177 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:57:23,195 INFO L256 TraceCheckSpWp]: Trace formula consists of 4291 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-09 16:57:23,202 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:57:24,401 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-01-09 16:57:24,401 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 16:57:24,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126900967] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:57:24,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 16:57:24,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2025-01-09 16:57:24,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572122353] [2025-01-09 16:57:24,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:57:24,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-09 16:57:24,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:57:24,402 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-09 16:57:24,402 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2025-01-09 16:57:24,403 INFO L87 Difference]: Start difference. First operand 166 states and 218 transitions. Second operand has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 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) [2025-01-09 16:57:27,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 16:57:27,751 INFO L93 Difference]: Finished difference Result 284 states and 375 transitions. [2025-01-09 16:57:27,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 16:57:27,752 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 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 99 [2025-01-09 16:57:27,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 16:57:27,754 INFO L225 Difference]: With dead ends: 284 [2025-01-09 16:57:27,756 INFO L226 Difference]: Without dead ends: 166 [2025-01-09 16:57:27,757 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2025-01-09 16:57:27,758 INFO L435 NwaCegarLoop]: 157 mSDtfsCounter, 231 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2025-01-09 16:57:27,758 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 889 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2025-01-09 16:57:27,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2025-01-09 16:57:27,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2025-01-09 16:57:27,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 100 states have (on average 1.18) internal successors, (118), 102 states have internal predecessors, (118), 48 states have call successors, (48), 16 states have call predecessors, (48), 17 states have return successors, (49), 47 states have call predecessors, (49), 47 states have call successors, (49) [2025-01-09 16:57:27,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 215 transitions. [2025-01-09 16:57:27,778 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 215 transitions. Word has length 99 [2025-01-09 16:57:27,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 16:57:27,779 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 215 transitions. [2025-01-09 16:57:27,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 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) [2025-01-09 16:57:27,779 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 215 transitions. [2025-01-09 16:57:27,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2025-01-09 16:57:27,781 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 16:57:27,781 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, 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, 1] [2025-01-09 16:57:27,801 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-09 16:57:27,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:57:27,982 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 16:57:27,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:57:27,982 INFO L85 PathProgramCache]: Analyzing trace with hash -181769477, now seen corresponding path program 2 times [2025-01-09 16:57:27,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:57:27,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842182165] [2025-01-09 16:57:27,982 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:57:27,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:57:31,746 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 114 statements into 2 equivalence classes. [2025-01-09 16:57:32,310 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 114 of 114 statements. [2025-01-09 16:57:32,311 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:57:32,311 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:57:34,435 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2025-01-09 16:57:34,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:57:34,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842182165] [2025-01-09 16:57:34,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842182165] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:57:34,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:57:34,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-01-09 16:57:34,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323285907] [2025-01-09 16:57:34,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:57:34,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-01-09 16:57:34,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:57:34,437 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-01-09 16:57:34,437 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-01-09 16:57:34,437 INFO L87 Difference]: Start difference. First operand 166 states and 215 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 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) [2025-01-09 16:57:36,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 16:57:36,361 INFO L93 Difference]: Finished difference Result 281 states and 367 transitions. [2025-01-09 16:57:36,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 16:57:36,362 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 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 114 [2025-01-09 16:57:36,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 16:57:36,364 INFO L225 Difference]: With dead ends: 281 [2025-01-09 16:57:36,364 INFO L226 Difference]: Without dead ends: 164 [2025-01-09 16:57:36,365 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-01-09 16:57:36,365 INFO L435 NwaCegarLoop]: 186 mSDtfsCounter, 62 mSDsluCounter, 1190 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 1376 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-01-09 16:57:36,366 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 1376 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-01-09 16:57:36,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2025-01-09 16:57:36,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2025-01-09 16:57:36,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 99 states have (on average 1.1717171717171717) internal successors, (116), 100 states have internal predecessors, (116), 48 states have call successors, (48), 16 states have call predecessors, (48), 16 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2025-01-09 16:57:36,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 211 transitions. [2025-01-09 16:57:36,393 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 211 transitions. Word has length 114 [2025-01-09 16:57:36,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 16:57:36,394 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 211 transitions. [2025-01-09 16:57:36,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 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) [2025-01-09 16:57:36,394 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 211 transitions. [2025-01-09 16:57:36,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2025-01-09 16:57:36,396 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 16:57:36,396 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, 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, 1] [2025-01-09 16:57:36,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-09 16:57:36,396 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 16:57:36,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:57:36,396 INFO L85 PathProgramCache]: Analyzing trace with hash 820600243, now seen corresponding path program 1 times [2025-01-09 16:57:36,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:57:36,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134698489] [2025-01-09 16:57:36,397 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:57:36,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:57:40,049 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 144 statements into 1 equivalence classes. [2025-01-09 16:57:42,636 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 144 of 144 statements. [2025-01-09 16:57:42,636 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:57:42,636 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:57:52,840 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 33 proven. 3 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2025-01-09 16:57:52,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:57:52,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134698489] [2025-01-09 16:57:52,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134698489] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:57:52,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480235578] [2025-01-09 16:57:52,841 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:57:52,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:57:52,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:57:52,843 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) [2025-01-09 16:57:52,844 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 [2025-01-09 16:57:57,679 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 144 statements into 1 equivalence classes.