./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_swap_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_swap_harness_negated.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 7ca632cf4d0628a0bca8581d3487333a879c201a6e38711f70e5e296a0f6c548 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 18:15:30,865 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 18:15:30,926 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-03-08 18:15:30,933 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 18:15:30,933 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 18:15:30,952 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 18:15:30,953 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 18:15:30,953 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 18:15:30,954 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 18:15:30,954 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 18:15:30,954 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 18:15:30,954 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 18:15:30,955 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 18:15:30,955 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 18:15:30,955 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 18:15:30,955 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 18:15:30,955 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 18:15:30,955 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 18:15:30,955 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 18:15:30,955 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 18:15:30,956 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 18:15:30,956 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 18:15:30,956 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 18:15:30,956 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 18:15:30,956 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 18:15:30,956 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 18:15:30,956 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 18:15:30,956 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 18:15:30,956 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 18:15:30,956 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 18:15:30,957 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 18:15:30,957 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 18:15:30,957 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 18:15:30,957 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 18:15:30,957 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 18:15:30,957 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 18:15:30,958 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 18:15:30,958 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 18:15:30,958 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 18:15:30,958 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 18:15:30,958 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/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 -> 7ca632cf4d0628a0bca8581d3487333a879c201a6e38711f70e5e296a0f6c548 [2025-03-08 18:15:31,219 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 18:15:31,230 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 18:15:31,232 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 18:15:31,234 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 18:15:31,234 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 18:15:31,236 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_swap_harness_negated.i [2025-03-08 18:15:32,433 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7079a15c7/68432b3e03574cb2863aee2e8f11e315/FLAGfbf7e5899 [2025-03-08 18:15:32,869 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 18:15:32,870 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_swap_harness_negated.i [2025-03-08 18:15:32,895 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7079a15c7/68432b3e03574cb2863aee2e8f11e315/FLAGfbf7e5899 [2025-03-08 18:15:32,909 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7079a15c7/68432b3e03574cb2863aee2e8f11e315 [2025-03-08 18:15:32,911 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 18:15:32,913 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 18:15:32,914 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 18:15:32,915 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 18:15:32,919 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 18:15:32,919 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 06:15:32" (1/1) ... [2025-03-08 18:15:32,920 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57472dd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:15:32, skipping insertion in model container [2025-03-08 18:15:32,920 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 06:15:32" (1/1) ... [2025-03-08 18:15:33,006 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 18:15:33,256 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_swap_harness_negated.i[4499,4512] [2025-03-08 18:15:33,266 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_swap_harness_negated.i[4559,4572] [2025-03-08 18:15:34,025 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,028 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,028 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,029 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,030 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,046 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,047 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,048 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,050 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,052 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,054 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,055 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,056 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,563 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,567 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,626 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,627 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,627 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,627 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,627 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,627 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,627 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,628 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,628 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,628 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,628 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,628 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,628 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,633 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,633 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,633 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,633 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,635 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,636 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,640 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,641 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,641 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,664 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 18:15:34,693 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 18:15:34,702 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_swap_harness_negated.i[4499,4512] [2025-03-08 18:15:34,708 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_swap_harness_negated.i[4559,4572] [2025-03-08 18:15:34,772 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,774 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,775 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,776 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,777 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,781 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,781 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,782 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,782 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,782 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,783 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,783 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,783 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,833 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,838 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,844 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7738-7749] [2025-03-08 18:15:34,860 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,862 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,862 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,862 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,862 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,863 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,863 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,863 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,863 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,864 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,864 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,864 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,864 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,864 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,864 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,864 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,864 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,866 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,866 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,869 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,870 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,870 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:34,876 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 18:15:35,026 INFO L204 MainTranslator]: Completed translation [2025-03-08 18:15:35,027 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:15:35 WrapperNode [2025-03-08 18:15:35,027 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 18:15:35,029 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 18:15:35,029 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 18:15:35,029 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 18:15:35,034 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:15:35" (1/1) ... [2025-03-08 18:15:35,100 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:15:35" (1/1) ... [2025-03-08 18:15:35,159 INFO L138 Inliner]: procedures = 687, calls = 1963, calls flagged for inlining = 61, calls inlined = 11, statements flattened = 791 [2025-03-08 18:15:35,160 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 18:15:35,160 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 18:15:35,160 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 18:15:35,160 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 18:15:35,166 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:15:35" (1/1) ... [2025-03-08 18:15:35,166 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:15:35" (1/1) ... [2025-03-08 18:15:35,177 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:15:35" (1/1) ... [2025-03-08 18:15:35,251 INFO L175 MemorySlicer]: Split 355 memory accesses to 8 slices as follows [238, 2, 5, 7, 3, 81, 5, 14]. 67 percent of accesses are in the largest equivalence class. The 19 initializations are split as follows [6, 2, 0, 0, 1, 5, 0, 5]. The 258 writes are split as follows [232, 0, 2, 2, 1, 17, 2, 2]. [2025-03-08 18:15:35,251 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:15:35" (1/1) ... [2025-03-08 18:15:35,251 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:15:35" (1/1) ... [2025-03-08 18:15:35,277 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:15:35" (1/1) ... [2025-03-08 18:15:35,282 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:15:35" (1/1) ... [2025-03-08 18:15:35,291 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:15:35" (1/1) ... [2025-03-08 18:15:35,298 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:15:35" (1/1) ... [2025-03-08 18:15:35,312 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 18:15:35,316 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 18:15:35,316 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 18:15:35,316 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 18:15:35,317 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:15:35" (1/1) ... [2025-03-08 18:15:35,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 18:15:35,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 18:15:35,343 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 18:15:35,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 18:15:35,363 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2025-03-08 18:15:35,363 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2025-03-08 18:15:35,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-08 18:15:35,363 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2025-03-08 18:15:35,364 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2025-03-08 18:15:35,364 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2025-03-08 18:15:35,364 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2025-03-08 18:15:35,364 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2025-03-08 18:15:35,364 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2025-03-08 18:15:35,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2025-03-08 18:15:35,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2025-03-08 18:15:35,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2025-03-08 18:15:35,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2025-03-08 18:15:35,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2025-03-08 18:15:35,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2025-03-08 18:15:35,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2025-03-08 18:15:35,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2025-03-08 18:15:35,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-08 18:15:35,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-08 18:15:35,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-08 18:15:35,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-08 18:15:35,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-08 18:15:35,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-03-08 18:15:35,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2025-03-08 18:15:35,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2025-03-08 18:15:35,366 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2025-03-08 18:15:35,366 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2025-03-08 18:15:35,366 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-08 18:15:35,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-08 18:15:35,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-08 18:15:35,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 18:15:35,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-08 18:15:35,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-08 18:15:35,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-08 18:15:35,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-03-08 18:15:35,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2025-03-08 18:15:35,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2025-03-08 18:15:35,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2025-03-08 18:15:35,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2025-03-08 18:15:35,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 18:15:35,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 18:15:35,366 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2025-03-08 18:15:35,366 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2025-03-08 18:15:35,366 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2025-03-08 18:15:35,367 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2025-03-08 18:15:35,367 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2025-03-08 18:15:35,367 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2025-03-08 18:15:35,367 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2025-03-08 18:15:35,367 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2025-03-08 18:15:35,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2025-03-08 18:15:35,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2025-03-08 18:15:35,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2025-03-08 18:15:35,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2025-03-08 18:15:35,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2025-03-08 18:15:35,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2025-03-08 18:15:35,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2025-03-08 18:15:35,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2025-03-08 18:15:35,367 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2025-03-08 18:15:35,367 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2025-03-08 18:15:35,367 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2025-03-08 18:15:35,367 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2025-03-08 18:15:35,367 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-08 18:15:35,367 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-08 18:15:35,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-08 18:15:35,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-08 18:15:35,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-08 18:15:35,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-08 18:15:35,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-03-08 18:15:35,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-03-08 18:15:35,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2025-03-08 18:15:35,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2025-03-08 18:15:35,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2025-03-08 18:15:35,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-03-08 18:15:35,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-03-08 18:15:35,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-03-08 18:15:35,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-03-08 18:15:35,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2025-03-08 18:15:35,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2025-03-08 18:15:35,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2025-03-08 18:15:35,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2025-03-08 18:15:35,367 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2025-03-08 18:15:35,367 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2025-03-08 18:15:35,367 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2025-03-08 18:15:35,367 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2025-03-08 18:15:35,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-08 18:15:35,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-08 18:15:35,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-08 18:15:35,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-08 18:15:35,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-08 18:15:35,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-03-08 18:15:35,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2025-03-08 18:15:35,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2025-03-08 18:15:35,367 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2025-03-08 18:15:35,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2025-03-08 18:15:35,368 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2025-03-08 18:15:35,368 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2025-03-08 18:15:35,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 18:15:35,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-08 18:15:35,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-08 18:15:35,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-08 18:15:35,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-08 18:15:35,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-08 18:15:35,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-08 18:15:35,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-03-08 18:15:35,617 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 18:15:35,619 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 18:15:35,649 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L6923: havoc #t~malloc583.base, #t~malloc583.offset; [2025-03-08 18:15:35,676 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L263: havoc #t~nondet6; [2025-03-08 18:15:35,711 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2590: havoc #t~ret57#1; [2025-03-08 18:15:35,748 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L6937: havoc #t~ret587;havoc #t~ite589.base, #t~ite589.offset;havoc #t~ret588.base, #t~ret588.offset; [2025-03-08 18:15:35,825 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L8239: havoc aws_priority_queue_backpointers_valid_#t~ret876#1;havoc aws_priority_queue_backpointers_valid_#t~short877#1; [2025-03-08 18:15:35,883 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2944: call ULTIMATE.dealloc(~#required_size~0.base, ~#required_size~0.offset);havoc ~#required_size~0.base, ~#required_size~0.offset; [2025-03-08 18:15:35,886 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L261: havoc #t~nondet4; [2025-03-08 18:15:35,901 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L8153: havoc ~node~1.base, ~node~1.offset; [2025-03-08 18:15:41,102 INFO L? ?]: Removed 186 outVars from TransFormulas that were not future-live. [2025-03-08 18:15:41,102 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 18:15:41,113 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 18:15:41,113 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 18:15:41,114 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 06:15:41 BoogieIcfgContainer [2025-03-08 18:15:41,114 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 18:15:41,115 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 18:15:41,115 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 18:15:41,118 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 18:15:41,119 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 06:15:32" (1/3) ... [2025-03-08 18:15:41,119 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71a9169d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 06:15:41, skipping insertion in model container [2025-03-08 18:15:41,119 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:15:35" (2/3) ... [2025-03-08 18:15:41,119 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71a9169d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 06:15:41, skipping insertion in model container [2025-03-08 18:15:41,119 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 06:15:41" (3/3) ... [2025-03-08 18:15:41,120 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_s_swap_harness_negated.i [2025-03-08 18:15:41,130 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 18:15:41,131 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_priority_queue_s_swap_harness_negated.i that has 18 procedures, 217 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 18:15:41,179 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 18:15:41,189 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;@330c63e8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 18:15:41,189 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 18:15:41,192 INFO L276 IsEmpty]: Start isEmpty. Operand has 217 states, 139 states have (on average 1.2158273381294964) internal successors, (169), 140 states have internal predecessors, (169), 59 states have call successors, (59), 17 states have call predecessors, (59), 17 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2025-03-08 18:15:41,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2025-03-08 18:15:41,203 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 18:15:41,204 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 18:15:41,205 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 18:15:41,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 18:15:41,209 INFO L85 PathProgramCache]: Analyzing trace with hash -2112822781, now seen corresponding path program 1 times [2025-03-08 18:15:41,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 18:15:41,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381202745] [2025-03-08 18:15:41,215 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 18:15:41,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 18:15:45,451 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 142 statements into 1 equivalence classes. [2025-03-08 18:15:45,835 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 142 of 142 statements. [2025-03-08 18:15:45,836 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 18:15:45,836 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 18:15:46,340 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2025-03-08 18:15:46,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 18:15:46,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381202745] [2025-03-08 18:15:46,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381202745] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 18:15:46,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679412470] [2025-03-08 18:15:46,341 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 18:15:46,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 18:15:46,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 18:15:46,344 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 18:15:46,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 18:15:50,644 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 142 statements into 1 equivalence classes. [2025-03-08 18:15:51,084 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 142 of 142 statements. [2025-03-08 18:15:51,084 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 18:15:51,085 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 18:15:51,104 INFO L256 TraceCheckSpWp]: Trace formula consists of 4503 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-08 18:15:51,113 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 18:15:51,136 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-08 18:15:51,136 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 18:15:51,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679412470] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 18:15:51,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 18:15:51,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-08 18:15:51,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983159472] [2025-03-08 18:15:51,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 18:15:51,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 18:15:51,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 18:15:51,159 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 18:15:51,159 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 18:15:51,162 INFO L87 Difference]: Start difference. First operand has 217 states, 139 states have (on average 1.2158273381294964) internal successors, (169), 140 states have internal predecessors, (169), 59 states have call successors, (59), 17 states have call predecessors, (59), 17 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) Second operand has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2025-03-08 18:15:51,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 18:15:51,194 INFO L93 Difference]: Finished difference Result 411 states and 574 transitions. [2025-03-08 18:15:51,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 18:15:51,196 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 142 [2025-03-08 18:15:51,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 18:15:51,201 INFO L225 Difference]: With dead ends: 411 [2025-03-08 18:15:51,202 INFO L226 Difference]: Without dead ends: 212 [2025-03-08 18:15:51,205 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 18:15:51,207 INFO L435 NwaCegarLoop]: 285 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, 285 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 [2025-03-08 18:15:51,207 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 18:15:51,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2025-03-08 18:15:51,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2025-03-08 18:15:51,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 135 states have (on average 1.2074074074074075) internal successors, (163), 136 states have internal predecessors, (163), 59 states have call successors, (59), 17 states have call predecessors, (59), 17 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2025-03-08 18:15:51,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 280 transitions. [2025-03-08 18:15:51,248 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 280 transitions. Word has length 142 [2025-03-08 18:15:51,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 18:15:51,249 INFO L471 AbstractCegarLoop]: Abstraction has 212 states and 280 transitions. [2025-03-08 18:15:51,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2025-03-08 18:15:51,249 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 280 transitions. [2025-03-08 18:15:51,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2025-03-08 18:15:51,251 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 18:15:51,253 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 18:15:51,268 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-08 18:15:51,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-08 18:15:51,454 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 18:15:51,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 18:15:51,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1733099522, now seen corresponding path program 1 times [2025-03-08 18:15:51,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 18:15:51,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943436202] [2025-03-08 18:15:51,455 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 18:15:51,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 18:15:55,224 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 142 statements into 1 equivalence classes. [2025-03-08 18:15:55,696 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 142 of 142 statements. [2025-03-08 18:15:55,699 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 18:15:55,699 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 18:15:58,279 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2025-03-08 18:15:58,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 18:15:58,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943436202] [2025-03-08 18:15:58,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943436202] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 18:15:58,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 18:15:58,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 18:15:58,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74139833] [2025-03-08 18:15:58,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 18:15:58,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 18:15:58,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 18:15:58,283 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 18:15:58,283 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 18:15:58,283 INFO L87 Difference]: Start difference. First operand 212 states and 280 transitions. Second operand has 6 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2025-03-08 18:15:58,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 18:15:58,771 INFO L93 Difference]: Finished difference Result 222 states and 292 transitions. [2025-03-08 18:15:58,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 18:15:58,771 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) Word has length 142 [2025-03-08 18:15:58,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 18:15:58,774 INFO L225 Difference]: With dead ends: 222 [2025-03-08 18:15:58,774 INFO L226 Difference]: Without dead ends: 220 [2025-03-08 18:15:58,775 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-08 18:15:58,779 INFO L435 NwaCegarLoop]: 277 mSDtfsCounter, 3 mSDsluCounter, 1088 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1365 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 18:15:58,779 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1365 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 18:15:58,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2025-03-08 18:15:58,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 219. [2025-03-08 18:15:58,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 139 states have (on average 1.2014388489208634) internal successors, (167), 141 states have internal predecessors, (167), 60 states have call successors, (60), 18 states have call predecessors, (60), 19 states have return successors, (62), 59 states have call predecessors, (62), 59 states have call successors, (62) [2025-03-08 18:15:58,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 289 transitions. [2025-03-08 18:15:58,796 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 289 transitions. Word has length 142 [2025-03-08 18:15:58,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 18:15:58,797 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 289 transitions. [2025-03-08 18:15:58,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2025-03-08 18:15:58,798 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 289 transitions. [2025-03-08 18:15:58,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2025-03-08 18:15:58,802 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 18:15:58,803 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 18:15:58,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 18:15:58,803 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 18:15:58,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 18:15:58,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1243341214, now seen corresponding path program 1 times [2025-03-08 18:15:58,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 18:15:58,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990525498] [2025-03-08 18:15:58,804 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 18:15:58,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 18:16:02,735 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 150 statements into 1 equivalence classes. [2025-03-08 18:16:02,846 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 150 of 150 statements. [2025-03-08 18:16:02,849 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 18:16:02,850 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 18:16:04,006 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2025-03-08 18:16:04,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 18:16:04,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990525498] [2025-03-08 18:16:04,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990525498] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 18:16:04,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 18:16:04,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 18:16:04,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125962750] [2025-03-08 18:16:04,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 18:16:04,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 18:16:04,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 18:16:04,011 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 18:16:04,011 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 18:16:04,011 INFO L87 Difference]: Start difference. First operand 219 states and 289 transitions. Second operand has 6 states, 5 states have (on average 11.0) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2025-03-08 18:16:05,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 18:16:05,377 INFO L93 Difference]: Finished difference Result 390 states and 511 transitions. [2025-03-08 18:16:05,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 18:16:05,377 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.0) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 150 [2025-03-08 18:16:05,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 18:16:05,379 INFO L225 Difference]: With dead ends: 390 [2025-03-08 18:16:05,379 INFO L226 Difference]: Without dead ends: 172 [2025-03-08 18:16:05,380 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-08 18:16:05,381 INFO L435 NwaCegarLoop]: 255 mSDtfsCounter, 60 mSDsluCounter, 897 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 1152 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-08 18:16:05,381 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 1152 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-08 18:16:05,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2025-03-08 18:16:05,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 171. [2025-03-08 18:16:05,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 103 states have (on average 1.1553398058252426) internal successors, (119), 104 states have internal predecessors, (119), 53 states have call successors, (53), 14 states have call predecessors, (53), 14 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2025-03-08 18:16:05,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 224 transitions. [2025-03-08 18:16:05,401 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 224 transitions. Word has length 150 [2025-03-08 18:16:05,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 18:16:05,402 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 224 transitions. [2025-03-08 18:16:05,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.0) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2025-03-08 18:16:05,402 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 224 transitions. [2025-03-08 18:16:05,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2025-03-08 18:16:05,406 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 18:16:05,406 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 7, 7, 7, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 18:16:05,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 18:16:05,407 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 18:16:05,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 18:16:05,407 INFO L85 PathProgramCache]: Analyzing trace with hash -812933096, now seen corresponding path program 1 times [2025-03-08 18:16:05,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 18:16:05,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135051770] [2025-03-08 18:16:05,407 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 18:16:05,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 18:16:09,029 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 148 statements into 1 equivalence classes. [2025-03-08 18:16:09,283 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 148 of 148 statements. [2025-03-08 18:16:09,284 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 18:16:09,284 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 18:16:11,227 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2025-03-08 18:16:11,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 18:16:11,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135051770] [2025-03-08 18:16:11,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135051770] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 18:16:11,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932682905] [2025-03-08 18:16:11,228 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 18:16:11,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 18:16:11,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 18:16:11,230 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 18:16:11,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 18:16:15,298 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 148 statements into 1 equivalence classes. [2025-03-08 18:16:15,794 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 148 of 148 statements. [2025-03-08 18:16:15,794 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 18:16:15,794 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 18:16:15,818 INFO L256 TraceCheckSpWp]: Trace formula consists of 4514 conjuncts, 100 conjuncts are in the unsatisfiable core [2025-03-08 18:16:15,827 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 18:16:15,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-03-08 18:16:15,963 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-03-08 18:16:22,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 18:16:22,585 INFO L349 Elim1Store]: treesize reduction 39, result has 32.8 percent of original size [2025-03-08 18:16:22,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 35 [2025-03-08 18:16:22,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 18:16:22,946 INFO L349 Elim1Store]: treesize reduction 39, result has 32.8 percent of original size [2025-03-08 18:16:22,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 35 [2025-03-08 18:16:23,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2025-03-08 18:16:29,593 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-08 18:16:29,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 3 [2025-03-08 18:16:29,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2025-03-08 18:16:29,669 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-08 18:16:29,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 3 [2025-03-08 18:16:34,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15