./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 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_negated.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash cddb8be3317e9d6bf2e67633b62d21b872e62a4205c204f682a628045c0c7f11 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 07:22:49,730 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 07:22:49,781 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-03-17 07:22:49,786 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 07:22:49,790 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 07:22:49,812 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 07:22:49,814 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 07:22:49,814 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 07:22:49,814 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 07:22:49,815 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 07:22:49,815 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 07:22:49,815 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 07:22:49,816 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 07:22:49,816 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 07:22:49,816 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 07:22:49,816 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 07:22:49,816 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 07:22:49,817 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 07:22:49,817 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 07:22:49,817 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 07:22:49,817 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 07:22:49,817 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 07:22:49,817 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 07:22:49,817 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 07:22:49,817 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 07:22:49,817 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 07:22:49,817 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 07:22:49,817 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 07:22:49,817 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 07:22:49,818 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 07:22:49,818 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 07:22:49,818 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 07:22:49,818 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 07:22:49,818 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 07:22:49,818 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 07:22:49,818 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 07:22:49,818 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 07:22:49,818 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 07:22:49,819 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 07:22:49,819 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 07:22:49,819 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 -> cddb8be3317e9d6bf2e67633b62d21b872e62a4205c204f682a628045c0c7f11 [2025-03-17 07:22:50,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 07:22:50,076 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 07:22:50,078 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 07:22:50,079 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 07:22:50,079 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 07:22:50,080 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness_negated.i [2025-03-17 07:22:51,246 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/213a9977b/f4f9b8d68d0f41b087978e4dfb5020b4/FLAG51d3865d2 [2025-03-17 07:22:51,712 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 07:22:51,714 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness_negated.i [2025-03-17 07:22:51,742 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/213a9977b/f4f9b8d68d0f41b087978e4dfb5020b4/FLAG51d3865d2 [2025-03-17 07:22:51,753 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/213a9977b/f4f9b8d68d0f41b087978e4dfb5020b4 [2025-03-17 07:22:51,755 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 07:22:51,756 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 07:22:51,757 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 07:22:51,757 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 07:22:51,761 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 07:22:51,762 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:22:51" (1/1) ... [2025-03-17 07:22:51,763 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b428c33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:22:51, skipping insertion in model container [2025-03-17 07:22:51,763 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:22:51" (1/1) ... [2025-03-17 07:22:51,821 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 07:22:52,051 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_negated.i[4496,4509] [2025-03-17 07:22:52,060 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_negated.i[4556,4569] [2025-03-17 07:22:52,670 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:22:52,670 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:22:52,671 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:22:52,671 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:22:52,671 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:22:52,684 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:22:52,684 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:22:52,685 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:22:52,685 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:22:53,014 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:22:53,016 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:22:53,065 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 07:22:53,090 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 07:22:53,100 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_negated.i[4496,4509] [2025-03-17 07:22:53,101 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_negated.i[4556,4569] [2025-03-17 07:22:53,151 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:22:53,153 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:22:53,153 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:22:53,154 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:22:53,154 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:22:53,161 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:22:53,162 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:22:53,163 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:22:53,164 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:22:53,240 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:22:53,244 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 07:22:53,254 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7671-7682] [2025-03-17 07:22:53,276 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 07:22:53,447 INFO L204 MainTranslator]: Completed translation [2025-03-17 07:22:53,447 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:22:53 WrapperNode [2025-03-17 07:22:53,448 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 07:22:53,448 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 07:22:53,449 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 07:22:53,449 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 07:22:53,454 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:22:53" (1/1) ... [2025-03-17 07:22:53,523 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:22:53" (1/1) ... [2025-03-17 07:22:53,631 INFO L138 Inliner]: procedures = 678, calls = 1548, calls flagged for inlining = 54, calls inlined = 10, statements flattened = 726 [2025-03-17 07:22:53,632 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 07:22:53,632 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 07:22:53,632 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 07:22:53,632 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 07:22:53,647 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:22:53" (1/1) ... [2025-03-17 07:22:53,647 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:22:53" (1/1) ... [2025-03-17 07:22:53,658 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:22:53" (1/1) ... [2025-03-17 07:22:53,710 INFO L175 MemorySlicer]: Split 340 memory accesses to 7 slices as follows [238, 2, 6, 3, 2, 7, 82]. 70 percent of accesses are in the largest equivalence class. The 25 initializations are split as follows [6, 2, 0, 1, 1, 5, 10]. The 253 writes are split as follows [232, 0, 2, 1, 1, 0, 17]. [2025-03-17 07:22:53,710 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:22:53" (1/1) ... [2025-03-17 07:22:53,710 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:22:53" (1/1) ... [2025-03-17 07:22:53,732 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:22:53" (1/1) ... [2025-03-17 07:22:53,734 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:22:53" (1/1) ... [2025-03-17 07:22:53,739 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:22:53" (1/1) ... [2025-03-17 07:22:53,743 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:22:53" (1/1) ... [2025-03-17 07:22:53,754 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 07:22:53,755 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 07:22:53,755 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 07:22:53,755 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 07:22:53,755 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:22:53" (1/1) ... [2025-03-17 07:22:53,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 07:22:53,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 07:22:53,782 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) [2025-03-17 07:22:53,788 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 [2025-03-17 07:22:53,806 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2025-03-17 07:22:53,806 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2025-03-17 07:22:53,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 07:22:53,806 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2025-03-17 07:22:53,806 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2025-03-17 07:22:53,806 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2025-03-17 07:22:53,806 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2025-03-17 07:22:53,806 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2025-03-17 07:22:53,806 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2025-03-17 07:22:53,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2025-03-17 07:22:53,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2025-03-17 07:22:53,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2025-03-17 07:22:53,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2025-03-17 07:22:53,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2025-03-17 07:22:53,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2025-03-17 07:22:53,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2025-03-17 07:22:53,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 07:22:53,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 07:22:53,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-17 07:22:53,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-17 07:22:53,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-17 07:22:53,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-03-17 07:22:53,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2025-03-17 07:22:53,808 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2025-03-17 07:22:53,808 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2025-03-17 07:22:53,808 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-17 07:22:53,808 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-17 07:22:53,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 07:22:53,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 07:22:53,808 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2025-03-17 07:22:53,808 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2025-03-17 07:22:53,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-17 07:22:53,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-17 07:22:53,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-17 07:22:53,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-03-17 07:22:53,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2025-03-17 07:22:53,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2025-03-17 07:22:53,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2025-03-17 07:22:53,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 07:22:53,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 07:22:53,809 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2025-03-17 07:22:53,809 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2025-03-17 07:22:53,809 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2025-03-17 07:22:53,809 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2025-03-17 07:22:53,809 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2025-03-17 07:22:53,809 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2025-03-17 07:22:53,809 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2025-03-17 07:22:53,809 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2025-03-17 07:22:53,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2025-03-17 07:22:53,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2025-03-17 07:22:53,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2025-03-17 07:22:53,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2025-03-17 07:22:53,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2025-03-17 07:22:53,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2025-03-17 07:22:53,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2025-03-17 07:22:53,810 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2025-03-17 07:22:53,810 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2025-03-17 07:22:53,810 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2025-03-17 07:22:53,810 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2025-03-17 07:22:53,810 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-17 07:22:53,810 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-17 07:22:53,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-17 07:22:53,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-17 07:22:53,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-17 07:22:53,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-17 07:22:53,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-03-17 07:22:53,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-03-17 07:22:53,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2025-03-17 07:22:53,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2025-03-17 07:22:53,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-03-17 07:22:53,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-03-17 07:22:53,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-03-17 07:22:53,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-03-17 07:22:53,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2025-03-17 07:22:53,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2025-03-17 07:22:53,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2025-03-17 07:22:53,811 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2025-03-17 07:22:53,811 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2025-03-17 07:22:53,811 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2025-03-17 07:22:53,811 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2025-03-17 07:22:53,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 07:22:53,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 07:22:53,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-17 07:22:53,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-17 07:22:53,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-17 07:22:53,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-03-17 07:22:53,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2025-03-17 07:22:53,812 INFO L130 BoogieDeclarations]: Found specification of procedure assert_array_list_equivalence [2025-03-17 07:22:53,812 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_array_list_equivalence [2025-03-17 07:22:53,812 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2025-03-17 07:22:53,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2025-03-17 07:22:53,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 07:22:53,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 07:22:53,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-17 07:22:53,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-17 07:22:53,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-17 07:22:53,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-17 07:22:53,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-17 07:22:54,073 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 07:22:54,077 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 07:22:54,125 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2782: havoc #t~malloc77.base, #t~malloc77.offset; [2025-03-17 07:22:54,186 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L263: havoc #t~nondet6; [2025-03-17 07:22:54,212 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2588: havoc #t~ret57#1; [2025-03-17 07:22:54,327 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L7462: havoc aws_priority_queue_backpointers_valid_#t~ret686#1;havoc aws_priority_queue_backpointers_valid_#t~short687#1; [2025-03-17 07:22:54,397 INFO L1322 $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; [2025-03-17 07:22:54,399 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L261: havoc #t~nondet4; [2025-03-17 07:22:59,439 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L7497-2: havoc aws_priority_queue_top_#t~ret693#1; [2025-03-17 07:22:59,439 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3509: havoc aws_array_list_get_at_ptr_#t~ret274#1; [2025-03-17 07:22:59,439 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L7498: havoc aws_priority_queue_top_#t~ret694#1; [2025-03-17 07:22:59,501 INFO L? ?]: Removed 154 outVars from TransFormulas that were not future-live. [2025-03-17 07:22:59,501 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 07:22:59,513 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 07:22:59,514 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 07:22:59,514 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:22:59 BoogieIcfgContainer [2025-03-17 07:22:59,515 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 07:22:59,517 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 07:22:59,517 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 07:22:59,521 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 07:22:59,521 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 07:22:51" (1/3) ... [2025-03-17 07:22:59,521 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d8dcddd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:22:59, skipping insertion in model container [2025-03-17 07:22:59,522 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:22:53" (2/3) ... [2025-03-17 07:22:59,522 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d8dcddd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:22:59, skipping insertion in model container [2025-03-17 07:22:59,522 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:22:59" (3/3) ... [2025-03-17 07:22:59,523 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_top_harness_negated.i [2025-03-17 07:22:59,539 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 07:22:59,541 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_priority_queue_top_harness_negated.i that has 19 procedures, 200 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2025-03-17 07:22:59,589 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 07:22:59,600 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;@66484d5a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 07:22:59,600 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-17 07:22:59,603 INFO L276 IsEmpty]: Start isEmpty. Operand has 200 states, 124 states have (on average 1.2258064516129032) internal successors, (152), 124 states have internal predecessors, (152), 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) [2025-03-17 07:22:59,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2025-03-17 07:22:59,616 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 07:22:59,617 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] [2025-03-17 07:22:59,618 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 07:22:59,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 07:22:59,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1064309062, now seen corresponding path program 1 times [2025-03-17 07:22:59,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 07:22:59,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025734701] [2025-03-17 07:22:59,629 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:22:59,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 07:23:04,255 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 145 statements into 1 equivalence classes. [2025-03-17 07:23:04,569 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 145 of 145 statements. [2025-03-17 07:23:04,571 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:23:04,571 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:23:05,014 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2025-03-17 07:23:05,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 07:23:05,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025734701] [2025-03-17 07:23:05,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025734701] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 07:23:05,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773861592] [2025-03-17 07:23:05,016 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:23:05,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 07:23:05,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 07:23:05,019 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) [2025-03-17 07:23:05,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 07:23:09,249 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 145 statements into 1 equivalence classes. [2025-03-17 07:23:09,770 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 145 of 145 statements. [2025-03-17 07:23:09,770 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:23:09,771 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:23:09,793 INFO L256 TraceCheckSpWp]: Trace formula consists of 4577 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-17 07:23:09,806 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 07:23:09,824 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2025-03-17 07:23:09,824 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 07:23:09,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773861592] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 07:23:09,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 07:23:09,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-17 07:23:09,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081796213] [2025-03-17 07:23:09,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 07:23:09,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 07:23:09,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 07:23:09,844 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 07:23:09,844 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 07:23:09,846 INFO L87 Difference]: Start difference. First operand has 200 states, 124 states have (on average 1.2258064516129032) internal successors, (152), 124 states have internal predecessors, (152), 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 25.5) internal successors, (51), 2 states have internal predecessors, (51), 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) [2025-03-17 07:23:09,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 07:23:09,878 INFO L93 Difference]: Finished difference Result 379 states and 533 transitions. [2025-03-17 07:23:09,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 07:23:09,880 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 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 145 [2025-03-17 07:23:09,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 07:23:09,886 INFO L225 Difference]: With dead ends: 379 [2025-03-17 07:23:09,886 INFO L226 Difference]: Without dead ends: 197 [2025-03-17 07:23:09,889 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 07:23:09,891 INFO L435 NwaCegarLoop]: 262 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, 262 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 [2025-03-17 07:23:09,891 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 07:23:09,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2025-03-17 07:23:09,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2025-03-17 07:23:09,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 121 states have (on average 1.2066115702479339) internal successors, (146), 122 states have internal predecessors, (146), 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) [2025-03-17 07:23:09,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 259 transitions. [2025-03-17 07:23:09,935 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 259 transitions. Word has length 145 [2025-03-17 07:23:09,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 07:23:09,936 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 259 transitions. [2025-03-17 07:23:09,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 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) [2025-03-17 07:23:09,936 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 259 transitions. [2025-03-17 07:23:09,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2025-03-17 07:23:09,938 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 07:23:09,939 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] [2025-03-17 07:23:09,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-17 07:23:10,139 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 [2025-03-17 07:23:10,140 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 07:23:10,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 07:23:10,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1700982621, now seen corresponding path program 1 times [2025-03-17 07:23:10,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 07:23:10,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351942258] [2025-03-17 07:23:10,141 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:23:10,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 07:23:14,128 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 145 statements into 1 equivalence classes. [2025-03-17 07:23:14,258 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 145 of 145 statements. [2025-03-17 07:23:14,258 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:23:14,258 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:23:15,260 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2025-03-17 07:23:15,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 07:23:15,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351942258] [2025-03-17 07:23:15,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351942258] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 07:23:15,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 07:23:15,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 07:23:15,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210202692] [2025-03-17 07:23:15,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 07:23:15,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 07:23:15,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 07:23:15,262 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 07:23:15,262 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 07:23:15,262 INFO L87 Difference]: Start difference. First operand 197 states and 259 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2025-03-17 07:23:15,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 07:23:15,815 INFO L93 Difference]: Finished difference Result 348 states and 457 transitions. [2025-03-17 07:23:15,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 07:23:15,815 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 145 [2025-03-17 07:23:15,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 07:23:15,819 INFO L225 Difference]: With dead ends: 348 [2025-03-17 07:23:15,820 INFO L226 Difference]: Without dead ends: 197 [2025-03-17 07:23:15,821 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 [2025-03-17 07:23:15,822 INFO L435 NwaCegarLoop]: 245 mSDtfsCounter, 19 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 924 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 [2025-03-17 07:23:15,823 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 924 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-17 07:23:15,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2025-03-17 07:23:15,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2025-03-17 07:23:15,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 121 states have (on average 1.1983471074380165) internal successors, (145), 122 states have internal predecessors, (145), 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) [2025-03-17 07:23:15,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 258 transitions. [2025-03-17 07:23:15,838 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 258 transitions. Word has length 145 [2025-03-17 07:23:15,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 07:23:15,839 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 258 transitions. [2025-03-17 07:23:15,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2025-03-17 07:23:15,839 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 258 transitions. [2025-03-17 07:23:15,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2025-03-17 07:23:15,845 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 07:23:15,845 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] [2025-03-17 07:23:15,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 07:23:15,845 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 07:23:15,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 07:23:15,846 INFO L85 PathProgramCache]: Analyzing trace with hash -2104512339, now seen corresponding path program 1 times [2025-03-17 07:23:15,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 07:23:15,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871127522] [2025-03-17 07:23:15,846 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:23:15,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 07:23:19,928 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-17 07:23:20,034 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-17 07:23:20,035 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:23:20,035 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:23:21,259 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2025-03-17 07:23:21,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 07:23:21,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871127522] [2025-03-17 07:23:21,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871127522] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 07:23:21,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764367451] [2025-03-17 07:23:21,260 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:23:21,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 07:23:21,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 07:23:21,262 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) [2025-03-17 07:23:21,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 07:23:25,713 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-17 07:23:26,176 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-17 07:23:26,176 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:23:26,176 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:23:26,196 INFO L256 TraceCheckSpWp]: Trace formula consists of 4627 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-17 07:23:26,202 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 07:23:27,568 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2025-03-17 07:23:27,569 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 07:23:27,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764367451] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 07:23:27,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 07:23:27,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2025-03-17 07:23:27,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760269728] [2025-03-17 07:23:27,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 07:23:27,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 07:23:27,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 07:23:27,571 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 07:23:27,571 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2025-03-17 07:23:27,572 INFO L87 Difference]: Start difference. First operand 197 states and 258 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 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) [2025-03-17 07:23:29,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 07:23:29,383 INFO L93 Difference]: Finished difference Result 367 states and 489 transitions. [2025-03-17 07:23:29,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 07:23:29,383 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 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 153 [2025-03-17 07:23:29,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 07:23:29,386 INFO L225 Difference]: With dead ends: 367 [2025-03-17 07:23:29,386 INFO L226 Difference]: Without dead ends: 199 [2025-03-17 07:23:29,387 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2025-03-17 07:23:29,388 INFO L435 NwaCegarLoop]: 248 mSDtfsCounter, 46 mSDsluCounter, 1149 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 1397 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-03-17 07:23:29,388 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 1397 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-03-17 07:23:29,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2025-03-17 07:23:29,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2025-03-17 07:23:29,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 122 states have (on average 1.1967213114754098) internal successors, (146), 124 states have internal predecessors, (146), 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) [2025-03-17 07:23:29,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 265 transitions. [2025-03-17 07:23:29,400 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 265 transitions. Word has length 153 [2025-03-17 07:23:29,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 07:23:29,400 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 265 transitions. [2025-03-17 07:23:29,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 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) [2025-03-17 07:23:29,401 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 265 transitions. [2025-03-17 07:23:29,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2025-03-17 07:23:29,402 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 07:23:29,402 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] [2025-03-17 07:23:29,418 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-17 07:23:29,603 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 [2025-03-17 07:23:29,603 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 07:23:29,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 07:23:29,604 INFO L85 PathProgramCache]: Analyzing trace with hash -234269831, now seen corresponding path program 1 times [2025-03-17 07:23:29,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 07:23:29,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056569988] [2025-03-17 07:23:29,604 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:23:29,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 07:23:33,312 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 168 statements into 1 equivalence classes. [2025-03-17 07:23:33,429 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 168 of 168 statements. [2025-03-17 07:23:33,430 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:23:33,430 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:23:34,583 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2025-03-17 07:23:34,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 07:23:34,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056569988] [2025-03-17 07:23:34,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056569988] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 07:23:34,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 07:23:34,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 07:23:34,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266730059] [2025-03-17 07:23:34,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 07:23:34,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 07:23:34,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 07:23:34,585 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 07:23:34,585 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-17 07:23:34,585 INFO L87 Difference]: Start difference. First operand 199 states and 265 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 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) [2025-03-17 07:23:35,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 07:23:35,623 INFO L93 Difference]: Finished difference Result 353 states and 470 transitions. [2025-03-17 07:23:35,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 07:23:35,623 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 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 168 [2025-03-17 07:23:35,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 07:23:35,627 INFO L225 Difference]: With dead ends: 353 [2025-03-17 07:23:35,627 INFO L226 Difference]: Without dead ends: 199 [2025-03-17 07:23:35,627 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 [2025-03-17 07:23:35,628 INFO L435 NwaCegarLoop]: 239 mSDtfsCounter, 36 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 1114 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 [2025-03-17 07:23:35,629 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 1114 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-17 07:23:35,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2025-03-17 07:23:35,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2025-03-17 07:23:35,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 122 states have (on average 1.1885245901639345) internal successors, (145), 124 states have internal predecessors, (145), 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) [2025-03-17 07:23:35,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 264 transitions. [2025-03-17 07:23:35,639 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 264 transitions. Word has length 168 [2025-03-17 07:23:35,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 07:23:35,639 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 264 transitions. [2025-03-17 07:23:35,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 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) [2025-03-17 07:23:35,640 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 264 transitions. [2025-03-17 07:23:35,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2025-03-17 07:23:35,641 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 07:23:35,641 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] [2025-03-17 07:23:35,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 07:23:35,641 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 07:23:35,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 07:23:35,642 INFO L85 PathProgramCache]: Analyzing trace with hash 2146021377, now seen corresponding path program 1 times [2025-03-17 07:23:35,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 07:23:35,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304559849] [2025-03-17 07:23:35,642 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:23:35,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 07:23:39,405 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 184 statements into 1 equivalence classes. [2025-03-17 07:23:39,543 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 184 of 184 statements. [2025-03-17 07:23:39,544 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:23:39,544 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:23:41,217 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2025-03-17 07:23:41,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 07:23:41,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304559849] [2025-03-17 07:23:41,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304559849] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 07:23:41,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319074120] [2025-03-17 07:23:41,221 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 07:23:41,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 07:23:41,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 07:23:41,223 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) [2025-03-17 07:23:41,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 07:23:45,675 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 184 statements into 1 equivalence classes. [2025-03-17 07:23:46,094 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 184 of 184 statements. [2025-03-17 07:23:46,095 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 07:23:46,095 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:23:46,119 INFO L256 TraceCheckSpWp]: Trace formula consists of 4826 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-17 07:23:46,128 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 07:23:48,015 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2025-03-17 07:23:48,016 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 07:23:48,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319074120] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 07:23:48,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 07:23:48,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2025-03-17 07:23:48,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438301105] [2025-03-17 07:23:48,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 07:23:48,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 07:23:48,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 07:23:48,018 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 07:23:48,019 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2025-03-17 07:23:48,019 INFO L87 Difference]: Start difference. First operand 199 states and 264 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 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) [2025-03-17 07:23:50,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 07:23:50,434 INFO L93 Difference]: Finished difference Result 366 states and 487 transitions. [2025-03-17 07:23:50,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 07:23:50,435 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 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 184 [2025-03-17 07:23:50,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 07:23:50,437 INFO L225 Difference]: With dead ends: 366 [2025-03-17 07:23:50,437 INFO L226 Difference]: Without dead ends: 199 [2025-03-17 07:23:50,438 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2025-03-17 07:23:50,438 INFO L435 NwaCegarLoop]: 225 mSDtfsCounter, 68 mSDsluCounter, 1254 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 1479 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2025-03-17 07:23:50,439 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 1479 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2025-03-17 07:23:50,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2025-03-17 07:23:50,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2025-03-17 07:23:50,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 122 states have (on average 1.1885245901639345) internal successors, (145), 124 states have internal predecessors, (145), 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) [2025-03-17 07:23:50,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 263 transitions. [2025-03-17 07:23:50,451 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 263 transitions. Word has length 184 [2025-03-17 07:23:50,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 07:23:50,452 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 263 transitions. [2025-03-17 07:23:50,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 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) [2025-03-17 07:23:50,452 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 263 transitions. [2025-03-17 07:23:50,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2025-03-17 07:23:50,454 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 07:23:50,454 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] [2025-03-17 07:23:50,473 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-17 07:23:50,654 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 [2025-03-17 07:23:50,655 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 07:23:50,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 07:23:50,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1029809329, now seen corresponding path program 2 times [2025-03-17 07:23:50,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 07:23:50,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753070569] [2025-03-17 07:23:50,655 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 07:23:50,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 07:23:54,407 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 199 statements into 2 equivalence classes. [2025-03-17 07:23:54,497 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 26 of 199 statements. [2025-03-17 07:23:54,497 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 07:23:54,497 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:23:56,409 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2025-03-17 07:23:56,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 07:23:56,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753070569] [2025-03-17 07:23:56,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753070569] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 07:23:56,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 07:23:56,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 07:23:56,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135951999] [2025-03-17 07:23:56,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 07:23:56,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 07:23:56,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 07:23:56,411 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 07:23:56,411 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-17 07:23:56,412 INFO L87 Difference]: Start difference. First operand 199 states and 263 transitions. Second operand has 6 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-17 07:23:56,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 07:23:56,815 INFO L93 Difference]: Finished difference Result 207 states and 271 transitions. [2025-03-17 07:23:56,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 07:23:56,816 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) Word has length 199 [2025-03-17 07:23:56,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 07:23:56,818 INFO L225 Difference]: With dead ends: 207 [2025-03-17 07:23:56,818 INFO L226 Difference]: Without dead ends: 205 [2025-03-17 07:23:56,819 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-17 07:23:56,819 INFO L435 NwaCegarLoop]: 254 mSDtfsCounter, 3 mSDsluCounter, 1004 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1258 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 07:23:56,819 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1258 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 07:23:56,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2025-03-17 07:23:56,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 204. [2025-03-17 07:23:56,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 125 states have (on average 1.184) internal successors, (148), 127 states have internal predecessors, (148), 58 states have call successors, (58), 19 states have call predecessors, (58), 20 states have return successors, (62), 57 states have call predecessors, (62), 57 states have call successors, (62) [2025-03-17 07:23:56,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 268 transitions. [2025-03-17 07:23:56,832 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 268 transitions. Word has length 199 [2025-03-17 07:23:56,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 07:23:56,833 INFO L471 AbstractCegarLoop]: Abstraction has 204 states and 268 transitions. [2025-03-17 07:23:56,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2025-03-17 07:23:56,833 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 268 transitions. [2025-03-17 07:23:56,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2025-03-17 07:23:56,836 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 07:23:56,836 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 07:23:56,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 07:23:56,836 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 07:23:56,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 07:23:56,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1025483847, now seen corresponding path program 3 times [2025-03-17 07:23:56,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 07:23:56,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548379167] [2025-03-17 07:23:56,837 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 07:23:56,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 07:24:00,571 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 214 statements into 7 equivalence classes. [2025-03-17 07:24:02,117 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 62 of 214 statements. [2025-03-17 07:24:02,117 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-17 07:24:02,117 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 07:24:04,629 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2025-03-17 07:24:04,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 07:24:04,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548379167] [2025-03-17 07:24:04,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548379167] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 07:24:04,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439629899] [2025-03-17 07:24:04,629 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 07:24:04,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 07:24:04,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 07:24:04,632 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 07:24:04,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-17 07:24:09,507 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 214 statements into 7 equivalence classes.