./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.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_top_harness.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 83b04173d709803d577cfa49fe0a9356919fe4fb57e740404cfb5ffbf2560c97 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 18:15:44,704 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 18:15:44,762 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-03-08 18:15:44,767 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 18:15:44,769 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 18:15:44,784 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 18:15:44,785 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 18:15:44,785 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 18:15:44,785 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 18:15:44,785 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 18:15:44,786 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 18:15:44,786 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 18:15:44,786 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 18:15:44,786 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 18:15:44,786 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 18:15:44,786 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 18:15:44,786 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 18:15:44,786 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 18:15:44,788 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 18:15:44,789 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 18:15:44,789 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 18:15:44,789 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 18:15:44,789 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 18:15:44,789 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 18:15:44,789 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 18:15:44,789 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 18:15:44,790 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 18:15:44,790 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 18:15:44,790 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 18:15:44,790 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 18:15:44,790 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 18:15:44,790 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 18:15:44,790 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 18:15:44,790 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 18:15:44,790 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 18:15:44,790 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 18:15:44,790 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 18:15:44,790 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 18:15:44,790 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 18:15:44,790 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 18:15:44,790 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 -> 83b04173d709803d577cfa49fe0a9356919fe4fb57e740404cfb5ffbf2560c97 [2025-03-08 18:15:45,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 18:15:45,016 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 18:15:45,017 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 18:15:45,018 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 18:15:45,018 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 18:15:45,019 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i [2025-03-08 18:15:46,136 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61b975f01/21c698a122c04fd78e1cc1f0fdca7ff8/FLAG55d948431 [2025-03-08 18:15:46,569 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 18:15:46,570 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i [2025-03-08 18:15:46,591 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61b975f01/21c698a122c04fd78e1cc1f0fdca7ff8/FLAG55d948431 [2025-03-08 18:15:46,708 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61b975f01/21c698a122c04fd78e1cc1f0fdca7ff8 [2025-03-08 18:15:46,710 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 18:15:46,711 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 18:15:46,712 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 18:15:46,712 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 18:15:46,715 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 18:15:46,716 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 06:15:46" (1/1) ... [2025-03-08 18:15:46,717 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1da30404 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:15:46, skipping insertion in model container [2025-03-08 18:15:46,718 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 06:15:46" (1/1) ... [2025-03-08 18:15:46,775 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 18:15:46,999 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_top_harness.i[4496,4509] [2025-03-08 18:15:47,007 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_top_harness.i[4556,4569] [2025-03-08 18:15:47,504 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:47,504 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:47,505 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:47,505 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:47,507 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:47,518 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:47,518 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:47,520 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:47,520 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:47,777 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:47,777 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:47,809 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 18:15:47,832 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 18:15:47,843 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_top_harness.i[4496,4509] [2025-03-08 18:15:47,843 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_top_harness.i[4556,4569] [2025-03-08 18:15:47,890 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:47,894 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:47,894 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:47,894 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:47,895 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:47,899 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:47,902 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:47,902 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:47,902 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:47,992 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:47,997 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-08 18:15:48,006 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7703-7714] [2025-03-08 18:15:48,029 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 18:15:48,164 INFO L204 MainTranslator]: Completed translation [2025-03-08 18:15:48,165 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:15:48 WrapperNode [2025-03-08 18:15:48,165 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 18:15:48,166 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 18:15:48,166 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 18:15:48,166 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 18:15:48,170 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:15:48" (1/1) ... [2025-03-08 18:15:48,214 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:15:48" (1/1) ... [2025-03-08 18:15:48,260 INFO L138 Inliner]: procedures = 678, calls = 1548, calls flagged for inlining = 54, calls inlined = 10, statements flattened = 726 [2025-03-08 18:15:48,260 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 18:15:48,265 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 18:15:48,265 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 18:15:48,265 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 18:15:48,275 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:15:48" (1/1) ... [2025-03-08 18:15:48,275 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:15:48" (1/1) ... [2025-03-08 18:15:48,281 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:15:48" (1/1) ... [2025-03-08 18:15:48,343 INFO L175 MemorySlicer]: Split 340 memory accesses to 7 slices as follows [238, 2, 2, 82, 6, 3, 7]. 70 percent of accesses are in the largest equivalence class. The 25 initializations are split as follows [6, 2, 1, 10, 0, 1, 5]. The 253 writes are split as follows [232, 0, 1, 17, 2, 1, 0]. [2025-03-08 18:15:48,343 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:15:48" (1/1) ... [2025-03-08 18:15:48,344 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:15:48" (1/1) ... [2025-03-08 18:15:48,379 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:15:48" (1/1) ... [2025-03-08 18:15:48,381 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:15:48" (1/1) ... [2025-03-08 18:15:48,385 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:15:48" (1/1) ... [2025-03-08 18:15:48,387 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:15:48" (1/1) ... [2025-03-08 18:15:48,393 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 18:15:48,394 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 18:15:48,394 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 18:15:48,394 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 18:15:48,395 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:15:48" (1/1) ... [2025-03-08 18:15:48,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 18:15:48,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 18:15:48,440 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 18:15:48,444 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 18:15:48,459 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2025-03-08 18:15:48,459 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2025-03-08 18:15:48,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-08 18:15:48,459 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2025-03-08 18:15:48,459 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2025-03-08 18:15:48,459 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2025-03-08 18:15:48,459 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2025-03-08 18:15:48,459 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2025-03-08 18:15:48,459 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2025-03-08 18:15:48,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2025-03-08 18:15:48,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2025-03-08 18:15:48,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2025-03-08 18:15:48,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2025-03-08 18:15:48,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2025-03-08 18:15:48,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2025-03-08 18:15:48,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2025-03-08 18:15:48,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-08 18:15:48,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-08 18:15:48,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-08 18:15:48,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-08 18:15:48,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-08 18:15:48,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-03-08 18:15:48,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2025-03-08 18:15:48,460 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2025-03-08 18:15:48,460 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2025-03-08 18:15:48,460 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-08 18:15:48,460 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-08 18:15:48,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-08 18:15:48,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 18:15:48,460 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2025-03-08 18:15:48,460 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2025-03-08 18:15:48,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-08 18:15:48,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-08 18:15:48,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-08 18:15:48,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-03-08 18:15:48,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2025-03-08 18:15:48,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2025-03-08 18:15:48,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2025-03-08 18:15:48,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 18:15:48,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 18:15:48,460 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2025-03-08 18:15:48,462 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2025-03-08 18:15:48,463 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2025-03-08 18:15:48,463 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2025-03-08 18:15:48,463 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2025-03-08 18:15:48,463 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2025-03-08 18:15:48,463 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2025-03-08 18:15:48,463 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2025-03-08 18:15:48,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2025-03-08 18:15:48,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2025-03-08 18:15:48,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2025-03-08 18:15:48,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2025-03-08 18:15:48,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2025-03-08 18:15:48,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2025-03-08 18:15:48,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2025-03-08 18:15:48,463 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2025-03-08 18:15:48,463 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2025-03-08 18:15:48,463 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2025-03-08 18:15:48,463 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2025-03-08 18:15:48,463 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-08 18:15:48,463 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-08 18:15:48,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-08 18:15:48,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-08 18:15:48,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-08 18:15:48,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-08 18:15:48,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-03-08 18:15:48,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-03-08 18:15:48,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2025-03-08 18:15:48,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2025-03-08 18:15:48,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-03-08 18:15:48,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-03-08 18:15:48,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-03-08 18:15:48,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-03-08 18:15:48,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2025-03-08 18:15:48,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2025-03-08 18:15:48,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2025-03-08 18:15:48,463 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2025-03-08 18:15:48,464 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2025-03-08 18:15:48,464 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2025-03-08 18:15:48,464 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2025-03-08 18:15:48,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-08 18:15:48,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-08 18:15:48,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-08 18:15:48,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-08 18:15:48,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-08 18:15:48,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-03-08 18:15:48,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2025-03-08 18:15:48,464 INFO L130 BoogieDeclarations]: Found specification of procedure assert_array_list_equivalence [2025-03-08 18:15:48,464 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_array_list_equivalence [2025-03-08 18:15:48,464 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2025-03-08 18:15:48,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2025-03-08 18:15:48,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 18:15:48,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-08 18:15:48,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-08 18:15:48,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-08 18:15:48,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-08 18:15:48,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-08 18:15:48,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-08 18:15:48,720 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 18:15:48,722 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 18:15:48,753 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2782: havoc #t~malloc77.base, #t~malloc77.offset; [2025-03-08 18:15:48,803 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L263: havoc #t~nondet6; [2025-03-08 18:15:48,826 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2588: havoc #t~ret57#1; [2025-03-08 18:15:48,935 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L7494: havoc aws_priority_queue_backpointers_valid_#t~ret686#1;havoc aws_priority_queue_backpointers_valid_#t~short687#1; [2025-03-08 18:15:48,996 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L3268: call ULTIMATE.dealloc(~#required_size~0.base, ~#required_size~0.offset);havoc ~#required_size~0.base, ~#required_size~0.offset; [2025-03-08 18:15:48,999 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L261: havoc #t~nondet4; [2025-03-08 18:15:54,113 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L7530: havoc aws_priority_queue_top_#t~ret694#1; [2025-03-08 18:15:54,114 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L3509: havoc aws_array_list_get_at_ptr_#t~ret274#1; [2025-03-08 18:15:54,114 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L7529-2: havoc aws_priority_queue_top_#t~ret693#1; [2025-03-08 18:15:54,166 INFO L? ?]: Removed 160 outVars from TransFormulas that were not future-live. [2025-03-08 18:15:54,166 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 18:15:54,179 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 18:15:54,179 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 18:15:54,179 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 06:15:54 BoogieIcfgContainer [2025-03-08 18:15:54,179 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 18:15:54,183 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 18:15:54,183 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 18:15:54,186 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 18:15:54,186 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 06:15:46" (1/3) ... [2025-03-08 18:15:54,187 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38c93f13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 06:15:54, skipping insertion in model container [2025-03-08 18:15:54,187 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:15:48" (2/3) ... [2025-03-08 18:15:54,187 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38c93f13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 06:15:54, skipping insertion in model container [2025-03-08 18:15:54,187 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 06:15:54" (3/3) ... [2025-03-08 18:15:54,189 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_top_harness.i [2025-03-08 18:15:54,202 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 18:15:54,204 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_priority_queue_top_harness.i that has 19 procedures, 206 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2025-03-08 18:15:54,248 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 18:15:54,256 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;@50a396ef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 18:15:54,257 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 18:15:54,261 INFO L276 IsEmpty]: Start isEmpty. Operand has 206 states, 130 states have (on average 1.2153846153846153) internal successors, (158), 130 states have internal predecessors, (158), 57 states have call successors, (57), 18 states have call predecessors, (57), 18 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2025-03-08 18:15:54,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2025-03-08 18:15:54,272 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 18:15:54,273 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 2, 2, 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, 1, 1] [2025-03-08 18:15:54,274 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 18:15:54,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 18:15:54,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1894184768, now seen corresponding path program 1 times [2025-03-08 18:15:54,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 18:15:54,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808051262] [2025-03-08 18:15:54,285 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 18:15:54,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 18:15:58,537 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 148 statements into 1 equivalence classes. [2025-03-08 18:15:58,900 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 148 of 148 statements. [2025-03-08 18:15:58,900 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 18:15:58,900 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 18:15:59,369 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2025-03-08 18:15:59,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 18:15:59,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808051262] [2025-03-08 18:15:59,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808051262] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 18:15:59,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488446681] [2025-03-08 18:15:59,372 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 18:15:59,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 18:15:59,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 18:15:59,374 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 18:15:59,376 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 18:16:03,246 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 148 statements into 1 equivalence classes. [2025-03-08 18:16:03,755 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 148 of 148 statements. [2025-03-08 18:16:03,756 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 18:16:03,756 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 18:16:03,777 INFO L256 TraceCheckSpWp]: Trace formula consists of 4580 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-08 18:16:03,787 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 18:16:03,810 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2025-03-08 18:16:03,813 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 18:16:03,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488446681] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 18:16:03,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 18:16:03,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-08 18:16:03,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441783947] [2025-03-08 18:16:03,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 18:16:03,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 18:16:03,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 18:16:03,834 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 18:16:03,835 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 18:16:03,838 INFO L87 Difference]: Start difference. First operand has 206 states, 130 states have (on average 1.2153846153846153) internal successors, (158), 130 states have internal predecessors, (158), 57 states have call successors, (57), 18 states have call predecessors, (57), 18 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) Second operand has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2025-03-08 18:16:03,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 18:16:03,865 INFO L93 Difference]: Finished difference Result 389 states and 543 transitions. [2025-03-08 18:16:03,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 18:16:03,867 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 148 [2025-03-08 18:16:03,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 18:16:03,875 INFO L225 Difference]: With dead ends: 389 [2025-03-08 18:16:03,875 INFO L226 Difference]: Without dead ends: 201 [2025-03-08 18:16:03,878 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 149 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 18:16:03,880 INFO L435 NwaCegarLoop]: 268 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, 268 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 18:16:03,881 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 18:16:03,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2025-03-08 18:16:03,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2025-03-08 18:16:03,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 125 states have (on average 1.2) internal successors, (150), 126 states have internal predecessors, (150), 57 states have call successors, (57), 18 states have call predecessors, (57), 18 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2025-03-08 18:16:03,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 263 transitions. [2025-03-08 18:16:03,916 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 263 transitions. Word has length 148 [2025-03-08 18:16:03,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 18:16:03,917 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 263 transitions. [2025-03-08 18:16:03,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2025-03-08 18:16:03,917 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 263 transitions. [2025-03-08 18:16:03,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2025-03-08 18:16:03,919 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 18:16:03,919 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 2, 2, 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, 1, 1] [2025-03-08 18:16:03,933 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 18:16:04,120 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 18:16:04,120 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 18:16:04,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 18:16:04,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1513890431, now seen corresponding path program 1 times [2025-03-08 18:16:04,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 18:16:04,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623981488] [2025-03-08 18:16:04,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 18:16:04,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 18:16:07,780 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 148 statements into 1 equivalence classes. [2025-03-08 18:16:07,902 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 148 of 148 statements. [2025-03-08 18:16:07,903 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 18:16:07,903 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 18:16:08,931 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2025-03-08 18:16:08,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 18:16:08,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623981488] [2025-03-08 18:16:08,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623981488] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 18:16:08,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 18:16:08,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 18:16:08,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690180800] [2025-03-08 18:16:08,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 18:16:08,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 18:16:08,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 18:16:08,935 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 18:16:08,935 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 18:16:08,936 INFO L87 Difference]: Start difference. First operand 201 states and 263 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2025-03-08 18:16:09,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 18:16:09,511 INFO L93 Difference]: Finished difference Result 353 states and 462 transitions. [2025-03-08 18:16:09,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 18:16:09,512 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 148 [2025-03-08 18:16:09,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 18:16:09,514 INFO L225 Difference]: With dead ends: 353 [2025-03-08 18:16:09,514 INFO L226 Difference]: Without dead ends: 201 [2025-03-08 18:16:09,516 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 18:16:09,520 INFO L435 NwaCegarLoop]: 249 mSDtfsCounter, 19 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 938 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 18:16:09,521 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 938 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 18:16:09,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2025-03-08 18:16:09,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2025-03-08 18:16:09,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 125 states have (on average 1.192) internal successors, (149), 126 states have internal predecessors, (149), 57 states have call successors, (57), 18 states have call predecessors, (57), 18 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2025-03-08 18:16:09,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 262 transitions. [2025-03-08 18:16:09,540 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 262 transitions. Word has length 148 [2025-03-08 18:16:09,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 18:16:09,540 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 262 transitions. [2025-03-08 18:16:09,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2025-03-08 18:16:09,540 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 262 transitions. [2025-03-08 18:16:09,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2025-03-08 18:16:09,544 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 18:16:09,545 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 18:16:09,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 18:16:09,545 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 18:16:09,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 18:16:09,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1978444475, now seen corresponding path program 1 times [2025-03-08 18:16:09,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 18:16:09,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016823153] [2025-03-08 18:16:09,546 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 18:16:09,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 18:16:13,406 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 156 statements into 1 equivalence classes. [2025-03-08 18:16:13,532 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 156 of 156 statements. [2025-03-08 18:16:13,533 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 18:16:13,534 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 18:16:14,853 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2025-03-08 18:16:14,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 18:16:14,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016823153] [2025-03-08 18:16:14,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016823153] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 18:16:14,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224288747] [2025-03-08 18:16:14,854 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 18:16:14,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 18:16:14,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 18:16:14,859 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 18:16:14,860 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 18:16:18,938 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 156 statements into 1 equivalence classes. [2025-03-08 18:16:19,368 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 156 of 156 statements. [2025-03-08 18:16:19,368 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 18:16:19,368 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 18:16:19,388 INFO L256 TraceCheckSpWp]: Trace formula consists of 4630 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-08 18:16:19,395 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 18:16:21,092 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2025-03-08 18:16:21,093 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 18:16:21,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224288747] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 18:16:21,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 18:16:21,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2025-03-08 18:16:21,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759814741] [2025-03-08 18:16:21,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 18:16:21,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 18:16:21,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 18:16:21,094 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 18:16:21,094 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2025-03-08 18:16:21,094 INFO L87 Difference]: Start difference. First operand 201 states and 262 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 4 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2025-03-08 18:16:25,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 18:16:25,204 INFO L93 Difference]: Finished difference Result 372 states and 494 transitions. [2025-03-08 18:16:25,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 18:16:25,205 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 4 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 156 [2025-03-08 18:16:25,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 18:16:25,208 INFO L225 Difference]: With dead ends: 372 [2025-03-08 18:16:25,208 INFO L226 Difference]: Without dead ends: 203 [2025-03-08 18:16:25,209 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2025-03-08 18:16:25,209 INFO L435 NwaCegarLoop]: 206 mSDtfsCounter, 297 mSDsluCounter, 983 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 1189 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2025-03-08 18:16:25,209 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 1189 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2025-03-08 18:16:25,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2025-03-08 18:16:25,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2025-03-08 18:16:25,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 126 states have (on average 1.1904761904761905) internal successors, (150), 128 states have internal predecessors, (150), 57 states have call successors, (57), 18 states have call predecessors, (57), 19 states have return successors, (62), 56 states have call predecessors, (62), 56 states have call successors, (62) [2025-03-08 18:16:25,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 269 transitions. [2025-03-08 18:16:25,226 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 269 transitions. Word has length 156 [2025-03-08 18:16:25,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 18:16:25,227 INFO L471 AbstractCegarLoop]: Abstraction has 203 states and 269 transitions. [2025-03-08 18:16:25,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 4 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2025-03-08 18:16:25,227 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 269 transitions. [2025-03-08 18:16:25,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2025-03-08 18:16:25,230 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 18:16:25,230 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 3, 3, 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, 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 18:16:25,246 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-08 18:16:25,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2025-03-08 18:16:25,431 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 18:16:25,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 18:16:25,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1369422142, now seen corresponding path program 1 times [2025-03-08 18:16:25,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 18:16:25,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905967287] [2025-03-08 18:16:25,432 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 18:16:25,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 18:16:28,890 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-03-08 18:16:29,034 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-03-08 18:16:29,035 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 18:16:29,035 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 18:16:30,286 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2025-03-08 18:16:30,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 18:16:30,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905967287] [2025-03-08 18:16:30,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905967287] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 18:16:30,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 18:16:30,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 18:16:30,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156933883] [2025-03-08 18:16:30,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 18:16:30,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 18:16:30,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 18:16:30,287 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 18:16:30,287 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 18:16:30,288 INFO L87 Difference]: Start difference. First operand 203 states and 269 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2025-03-08 18:16:31,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 18:16:31,302 INFO L93 Difference]: Finished difference Result 358 states and 475 transitions. [2025-03-08 18:16:31,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 18:16:31,303 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 171 [2025-03-08 18:16:31,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 18:16:31,306 INFO L225 Difference]: With dead ends: 358 [2025-03-08 18:16:31,307 INFO L226 Difference]: Without dead ends: 203 [2025-03-08 18:16:31,307 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 18:16:31,308 INFO L435 NwaCegarLoop]: 243 mSDtfsCounter, 36 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-08 18:16:31,308 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 1132 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-08 18:16:31,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2025-03-08 18:16:31,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2025-03-08 18:16:31,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 126 states have (on average 1.1825396825396826) internal successors, (149), 128 states have internal predecessors, (149), 57 states have call successors, (57), 18 states have call predecessors, (57), 19 states have return successors, (62), 56 states have call predecessors, (62), 56 states have call successors, (62) [2025-03-08 18:16:31,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 268 transitions. [2025-03-08 18:16:31,322 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 268 transitions. Word has length 171 [2025-03-08 18:16:31,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 18:16:31,322 INFO L471 AbstractCegarLoop]: Abstraction has 203 states and 268 transitions. [2025-03-08 18:16:31,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2025-03-08 18:16:31,323 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 268 transitions. [2025-03-08 18:16:31,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2025-03-08 18:16:31,325 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 18:16:31,325 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:16:31,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 18:16:31,325 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 18:16:31,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 18:16:31,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1853508391, now seen corresponding path program 1 times [2025-03-08 18:16:31,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 18:16:31,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622633849] [2025-03-08 18:16:31,325 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 18:16:31,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 18:16:34,771 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 187 statements into 1 equivalence classes. [2025-03-08 18:16:34,889 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 187 of 187 statements. [2025-03-08 18:16:34,890 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 18:16:34,890 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 18:16:36,343 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2025-03-08 18:16:36,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 18:16:36,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622633849] [2025-03-08 18:16:36,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622633849] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 18:16:36,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765195717] [2025-03-08 18:16:36,344 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 18:16:36,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 18:16:36,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 18:16:36,346 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 18:16:36,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 18:16:40,439 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 187 statements into 1 equivalence classes. [2025-03-08 18:16:40,863 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 187 of 187 statements. [2025-03-08 18:16:40,863 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 18:16:40,863 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 18:16:40,888 INFO L256 TraceCheckSpWp]: Trace formula consists of 4824 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-08 18:16:40,894 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 18:16:43,139 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2025-03-08 18:16:43,140 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 18:16:43,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765195717] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 18:16:43,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 18:16:43,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 15 [2025-03-08 18:16:43,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097814172] [2025-03-08 18:16:43,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 18:16:43,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 18:16:43,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 18:16:43,141 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 18:16:43,141 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2025-03-08 18:16:43,141 INFO L87 Difference]: Start difference. First operand 203 states and 268 transitions. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 5 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) [2025-03-08 18:16:48,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 18:16:48,640 INFO L93 Difference]: Finished difference Result 371 states and 492 transitions. [2025-03-08 18:16:48,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 18:16:48,640 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 5 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) Word has length 187 [2025-03-08 18:16:48,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 18:16:48,643 INFO L225 Difference]: With dead ends: 371 [2025-03-08 18:16:48,643 INFO L226 Difference]: Without dead ends: 203 [2025-03-08 18:16:48,643 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2025-03-08 18:16:48,644 INFO L435 NwaCegarLoop]: 197 mSDtfsCounter, 314 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 1317 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2025-03-08 18:16:48,644 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 1317 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2025-03-08 18:16:48,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2025-03-08 18:16:48,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2025-03-08 18:16:48,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 126 states have (on average 1.1825396825396826) internal successors, (149), 128 states have internal predecessors, (149), 57 states have call successors, (57), 18 states have call predecessors, (57), 19 states have return successors, (61), 56 states have call predecessors, (61), 56 states have call successors, (61) [2025-03-08 18:16:48,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 267 transitions. [2025-03-08 18:16:48,656 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 267 transitions. Word has length 187 [2025-03-08 18:16:48,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 18:16:48,656 INFO L471 AbstractCegarLoop]: Abstraction has 203 states and 267 transitions. [2025-03-08 18:16:48,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 5 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) [2025-03-08 18:16:48,657 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 267 transitions. [2025-03-08 18:16:48,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2025-03-08 18:16:48,658 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 18:16:48,659 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 18:16:48,679 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-08 18:16:48,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 18:16:48,859 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 18:16:48,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 18:16:48,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1286987474, now seen corresponding path program 2 times [2025-03-08 18:16:48,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 18:16:48,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630373671] [2025-03-08 18:16:48,860 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 18:16:48,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 18:16:52,318 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 202 statements into 2 equivalence classes. [2025-03-08 18:16:52,929 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 202 of 202 statements. [2025-03-08 18:16:52,930 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 18:16:52,930 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 18:16:54,353 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2025-03-08 18:16:54,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 18:16:54,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630373671] [2025-03-08 18:16:54,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630373671] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 18:16:54,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 18:16:54,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-08 18:16:54,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251573444] [2025-03-08 18:16:54,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 18:16:54,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 18:16:54,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 18:16:54,354 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 18:16:54,354 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-08 18:16:54,355 INFO L87 Difference]: Start difference. First operand 203 states and 267 transitions. Second operand has 8 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 5 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2025-03-08 18:16:56,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 18:16:56,323 INFO L93 Difference]: Finished difference Result 343 states and 457 transitions. [2025-03-08 18:16:56,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 18:16:56,324 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 5 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) Word has length 202 [2025-03-08 18:16:56,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 18:16:56,325 INFO L225 Difference]: With dead ends: 343 [2025-03-08 18:16:56,325 INFO L226 Difference]: Without dead ends: 216 [2025-03-08 18:16:56,326 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-03-08 18:16:56,327 INFO L435 NwaCegarLoop]: 235 mSDtfsCounter, 40 mSDsluCounter, 1332 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 1567 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-03-08 18:16:56,327 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 1567 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-03-08 18:16:56,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2025-03-08 18:16:56,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 215. [2025-03-08 18:16:56,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 132 states have (on average 1.1818181818181819) internal successors, (156), 134 states have internal predecessors, (156), 62 states have call successors, (62), 19 states have call predecessors, (62), 20 states have return successors, (66), 61 states have call predecessors, (66), 61 states have call successors, (66) [2025-03-08 18:16:56,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 284 transitions. [2025-03-08 18:16:56,339 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 284 transitions. Word has length 202 [2025-03-08 18:16:56,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 18:16:56,340 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 284 transitions. [2025-03-08 18:16:56,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 5 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2025-03-08 18:16:56,340 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 284 transitions. [2025-03-08 18:16:56,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2025-03-08 18:16:56,342 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 18:16:56,342 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:16:56,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 18:16:56,342 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 18:16:56,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 18:16:56,343 INFO L85 PathProgramCache]: Analyzing trace with hash -784836716, now seen corresponding path program 1 times [2025-03-08 18:16:56,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 18:16:56,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152442344] [2025-03-08 18:16:56,343 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 18:16:56,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 18:16:59,751 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 232 statements into 1 equivalence classes. [2025-03-08 18:17:02,873 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 232 of 232 statements. [2025-03-08 18:17:02,874 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 18:17:02,874 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat