./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 798a7b37 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-?-798a7b3-m [2025-03-04 03:04:24,854 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 03:04:24,917 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-03-04 03:04:24,925 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 03:04:24,925 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 03:04:24,945 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 03:04:24,946 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 03:04:24,946 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 03:04:24,946 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 03:04:24,946 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 03:04:24,946 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 03:04:24,947 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 03:04:24,947 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 03:04:24,947 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 03:04:24,948 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 03:04:24,948 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 03:04:24,948 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 03:04:24,948 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 03:04:24,949 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 03:04:24,949 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 03:04:24,949 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 03:04:24,949 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 03:04:24,949 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 03:04:24,949 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 03:04:24,949 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 03:04:24,949 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 03:04:24,949 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 03:04:24,949 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 03:04:24,949 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 03:04:24,949 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 03:04:24,949 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 03:04:24,949 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 03:04:24,950 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 03:04:24,950 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 03:04:24,950 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 03:04:24,951 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 03:04:24,951 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 03:04:24,951 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 03:04:24,951 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 03:04:24,951 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 03:04:24,951 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 [2025-03-04 03:04:25,206 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 03:04:25,217 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 03:04:25,220 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 03:04:25,221 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 03:04:25,221 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 03:04:25,223 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness_negated.i [2025-03-04 03:04:26,412 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5cfdea92a/6529fb3546c64616998f7379dc69d3aa/FLAGc1efa3a77 [2025-03-04 03:04:26,898 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 03:04:26,898 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness_negated.i [2025-03-04 03:04:26,935 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5cfdea92a/6529fb3546c64616998f7379dc69d3aa/FLAGc1efa3a77 [2025-03-04 03:04:26,951 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5cfdea92a/6529fb3546c64616998f7379dc69d3aa [2025-03-04 03:04:26,954 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 03:04:26,955 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 03:04:26,957 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 03:04:26,958 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 03:04:26,960 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 03:04:26,961 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 03:04:26" (1/1) ... [2025-03-04 03:04:26,962 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56961d1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:04:26, skipping insertion in model container [2025-03-04 03:04:26,963 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 03:04:26" (1/1) ... [2025-03-04 03:04:27,027 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 03:04:27,271 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] [2025-03-04 03:04:27,279 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] [2025-03-04 03:04:27,900 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 03:04:27,901 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 03:04:27,901 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 03:04:27,902 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 03:04:27,902 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 03:04:27,910 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 03:04:27,911 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 03:04:27,912 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 03:04:27,912 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 03:04:28,249 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 03:04:28,249 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 03:04:28,303 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 03:04:28,334 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 03:04:28,349 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] [2025-03-04 03:04:28,350 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] [2025-03-04 03:04:28,405 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 03:04:28,405 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 03:04:28,406 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 03:04:28,406 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 03:04:28,406 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 03:04:28,413 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 03:04:28,414 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 03:04:28,416 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 03:04:28,416 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 03:04:28,486 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 03:04:28,490 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-04 03:04:28,500 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7671-7682] [2025-03-04 03:04:28,521 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 03:04:28,688 INFO L204 MainTranslator]: Completed translation [2025-03-04 03:04:28,688 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:04:28 WrapperNode [2025-03-04 03:04:28,688 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 03:04:28,689 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 03:04:28,689 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 03:04:28,689 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 03:04:28,693 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:04:28" (1/1) ... [2025-03-04 03:04:28,764 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:04:28" (1/1) ... [2025-03-04 03:04:28,868 INFO L138 Inliner]: procedures = 678, calls = 1548, calls flagged for inlining = 54, calls inlined = 10, statements flattened = 726 [2025-03-04 03:04:28,870 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 03:04:28,871 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 03:04:28,871 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 03:04:28,871 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 03:04:28,878 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:04:28" (1/1) ... [2025-03-04 03:04:28,879 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:04:28" (1/1) ... [2025-03-04 03:04:28,886 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:04:28" (1/1) ... [2025-03-04 03:04:28,948 INFO L175 MemorySlicer]: Split 340 memory accesses to 7 slices as follows [238, 2, 3, 6, 82, 2, 7]. 70 percent of accesses are in the largest equivalence class. The 25 initializations are split as follows [6, 2, 1, 0, 10, 1, 5]. The 253 writes are split as follows [232, 0, 1, 2, 17, 1, 0]. [2025-03-04 03:04:28,950 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:04:28" (1/1) ... [2025-03-04 03:04:28,950 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:04:28" (1/1) ... [2025-03-04 03:04:28,988 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:04:28" (1/1) ... [2025-03-04 03:04:28,991 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:04:28" (1/1) ... [2025-03-04 03:04:29,001 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:04:28" (1/1) ... [2025-03-04 03:04:29,005 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:04:28" (1/1) ... [2025-03-04 03:04:29,019 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 03:04:29,020 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 03:04:29,021 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 03:04:29,021 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 03:04:29,022 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:04:28" (1/1) ... [2025-03-04 03:04:29,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 03:04:29,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 03:04:29,056 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) [2025-03-04 03:04:29,058 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 [2025-03-04 03:04:29,076 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2025-03-04 03:04:29,076 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2025-03-04 03:04:29,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-04 03:04:29,077 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2025-03-04 03:04:29,077 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2025-03-04 03:04:29,078 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2025-03-04 03:04:29,078 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2025-03-04 03:04:29,078 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2025-03-04 03:04:29,078 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2025-03-04 03:04:29,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2025-03-04 03:04:29,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2025-03-04 03:04:29,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2025-03-04 03:04:29,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2025-03-04 03:04:29,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2025-03-04 03:04:29,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2025-03-04 03:04:29,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2025-03-04 03:04:29,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-04 03:04:29,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-04 03:04:29,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-04 03:04:29,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-04 03:04:29,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-04 03:04:29,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-03-04 03:04:29,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2025-03-04 03:04:29,080 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2025-03-04 03:04:29,080 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2025-03-04 03:04:29,080 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-04 03:04:29,080 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-04 03:04:29,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-04 03:04:29,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 03:04:29,081 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2025-03-04 03:04:29,081 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2025-03-04 03:04:29,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-04 03:04:29,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-04 03:04:29,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-04 03:04:29,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-03-04 03:04:29,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2025-03-04 03:04:29,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2025-03-04 03:04:29,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2025-03-04 03:04:29,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 03:04:29,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 03:04:29,081 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2025-03-04 03:04:29,081 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2025-03-04 03:04:29,081 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2025-03-04 03:04:29,081 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2025-03-04 03:04:29,081 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2025-03-04 03:04:29,081 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2025-03-04 03:04:29,081 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2025-03-04 03:04:29,081 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2025-03-04 03:04:29,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2025-03-04 03:04:29,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2025-03-04 03:04:29,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2025-03-04 03:04:29,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2025-03-04 03:04:29,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2025-03-04 03:04:29,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2025-03-04 03:04:29,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2025-03-04 03:04:29,081 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2025-03-04 03:04:29,081 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2025-03-04 03:04:29,081 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2025-03-04 03:04:29,081 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2025-03-04 03:04:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-04 03:04:29,082 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-04 03:04:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-04 03:04:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-04 03:04:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-04 03:04:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-04 03:04:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-03-04 03:04:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-03-04 03:04:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2025-03-04 03:04:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2025-03-04 03:04:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-03-04 03:04:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-03-04 03:04:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-03-04 03:04:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-03-04 03:04:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2025-03-04 03:04:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2025-03-04 03:04:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2025-03-04 03:04:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2025-03-04 03:04:29,082 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2025-03-04 03:04:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2025-03-04 03:04:29,082 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2025-03-04 03:04:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-04 03:04:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-04 03:04:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-04 03:04:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-04 03:04:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-04 03:04:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-03-04 03:04:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2025-03-04 03:04:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure assert_array_list_equivalence [2025-03-04 03:04:29,082 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_array_list_equivalence [2025-03-04 03:04:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2025-03-04 03:04:29,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2025-03-04 03:04:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 03:04:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-04 03:04:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-04 03:04:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-04 03:04:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-04 03:04:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-04 03:04:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-04 03:04:29,329 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 03:04:29,332 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 03:04:29,367 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L2782: havoc #t~malloc77.base, #t~malloc77.offset; [2025-03-04 03:04:29,409 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L263: havoc #t~nondet6; [2025-03-04 03:04:29,436 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L2588: havoc #t~ret57#1; [2025-03-04 03:04:29,568 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L7462: havoc aws_priority_queue_backpointers_valid_#t~ret686#1;havoc aws_priority_queue_backpointers_valid_#t~short687#1; [2025-03-04 03:04:29,626 INFO L1325 $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; [2025-03-04 03:04:29,629 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L261: havoc #t~nondet4; [2025-03-04 03:04:34,687 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L7497-2: havoc aws_priority_queue_top_#t~ret693#1; [2025-03-04 03:04:34,687 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L3509: havoc aws_array_list_get_at_ptr_#t~ret274#1; [2025-03-04 03:04:34,687 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L7498: havoc aws_priority_queue_top_#t~ret694#1; [2025-03-04 03:04:34,766 INFO L? ?]: Removed 160 outVars from TransFormulas that were not future-live. [2025-03-04 03:04:34,766 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 03:04:34,778 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 03:04:34,779 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 03:04:34,780 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:04:34 BoogieIcfgContainer [2025-03-04 03:04:34,780 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 03:04:34,782 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 03:04:34,782 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 03:04:34,785 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 03:04:34,785 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 03:04:26" (1/3) ... [2025-03-04 03:04:34,786 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8302116 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 03:04:34, skipping insertion in model container [2025-03-04 03:04:34,786 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:04:28" (2/3) ... [2025-03-04 03:04:34,786 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8302116 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 03:04:34, skipping insertion in model container [2025-03-04 03:04:34,786 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:04:34" (3/3) ... [2025-03-04 03:04:34,787 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_top_harness_negated.i [2025-03-04 03:04:34,801 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 03:04:34,804 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_priority_queue_top_harness_negated.i that has 19 procedures, 206 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2025-03-04 03:04:34,852 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 03:04:34,860 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;@12b0007b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 03:04:34,861 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-04 03:04:34,864 INFO L276 IsEmpty]: Start isEmpty. Operand has 206 states, 130 states have (on average 1.2153846153846153) internal successors, (158), 130 states have internal predecessors, (158), 57 states have call successors, (57), 18 states have call predecessors, (57), 18 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2025-03-04 03:04:34,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2025-03-04 03:04:34,874 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 03:04:34,875 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 03:04:34,875 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 03:04:34,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 03:04:34,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1894184768, now seen corresponding path program 1 times [2025-03-04 03:04:34,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 03:04:34,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425816902] [2025-03-04 03:04:34,889 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 03:04:34,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 03:04:39,410 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 148 statements into 1 equivalence classes. [2025-03-04 03:04:39,746 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 148 of 148 statements. [2025-03-04 03:04:39,749 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 03:04:39,749 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 03:04:40,205 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2025-03-04 03:04:40,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 03:04:40,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425816902] [2025-03-04 03:04:40,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425816902] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 03:04:40,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304361050] [2025-03-04 03:04:40,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 03:04:40,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 03:04:40,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 03:04:40,211 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) [2025-03-04 03:04:40,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-04 03:04:44,457 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 148 statements into 1 equivalence classes. [2025-03-04 03:04:44,923 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 148 of 148 statements. [2025-03-04 03:04:44,923 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 03:04:44,923 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 03:04:44,944 INFO L256 TraceCheckSpWp]: Trace formula consists of 4580 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-04 03:04:44,953 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 03:04:44,970 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2025-03-04 03:04:44,973 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 03:04:44,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304361050] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 03:04:44,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 03:04:44,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-04 03:04:44,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365755096] [2025-03-04 03:04:44,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 03:04:44,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-04 03:04:44,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 03:04:44,992 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-04 03:04:44,992 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-04 03:04:44,995 INFO L87 Difference]: Start difference. First operand has 206 states, 130 states have (on average 1.2153846153846153) internal successors, (158), 130 states have internal predecessors, (158), 57 states have call successors, (57), 18 states have call predecessors, (57), 18 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) Second operand has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2025-03-04 03:04:45,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 03:04:45,029 INFO L93 Difference]: Finished difference Result 389 states and 543 transitions. [2025-03-04 03:04:45,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-04 03:04:45,031 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 148 [2025-03-04 03:04:45,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 03:04:45,036 INFO L225 Difference]: With dead ends: 389 [2025-03-04 03:04:45,036 INFO L226 Difference]: Without dead ends: 201 [2025-03-04 03:04:45,039 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-04 03:04:45,041 INFO L435 NwaCegarLoop]: 268 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 03:04:45,041 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 03:04:45,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2025-03-04 03:04:45,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2025-03-04 03:04:45,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 125 states have (on average 1.2) internal successors, (150), 126 states have internal predecessors, (150), 57 states have call successors, (57), 18 states have call predecessors, (57), 18 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2025-03-04 03:04:45,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 263 transitions. [2025-03-04 03:04:45,093 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 263 transitions. Word has length 148 [2025-03-04 03:04:45,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 03:04:45,094 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 263 transitions. [2025-03-04 03:04:45,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2025-03-04 03:04:45,095 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 263 transitions. [2025-03-04 03:04:45,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2025-03-04 03:04:45,097 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 03:04:45,097 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 03:04:45,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-04 03:04:45,301 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 [2025-03-04 03:04:45,301 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 03:04:45,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 03:04:45,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1513890431, now seen corresponding path program 1 times [2025-03-04 03:04:45,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 03:04:45,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649050944] [2025-03-04 03:04:45,302 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 03:04:45,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 03:04:49,144 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 148 statements into 1 equivalence classes. [2025-03-04 03:04:49,277 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 148 of 148 statements. [2025-03-04 03:04:49,277 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 03:04:49,277 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 03:04:50,357 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2025-03-04 03:04:50,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 03:04:50,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649050944] [2025-03-04 03:04:50,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649050944] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 03:04:50,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 03:04:50,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 03:04:50,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184871600] [2025-03-04 03:04:50,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 03:04:50,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 03:04:50,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 03:04:50,362 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 03:04:50,363 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 03:04:50,363 INFO L87 Difference]: Start difference. First operand 201 states and 263 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2025-03-04 03:04:50,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 03:04:50,957 INFO L93 Difference]: Finished difference Result 353 states and 462 transitions. [2025-03-04 03:04:50,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 03:04:50,959 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 148 [2025-03-04 03:04:50,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 03:04:50,962 INFO L225 Difference]: With dead ends: 353 [2025-03-04 03:04:50,962 INFO L226 Difference]: Without dead ends: 201 [2025-03-04 03:04:50,963 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 [2025-03-04 03:04:50,964 INFO L435 NwaCegarLoop]: 249 mSDtfsCounter, 19 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 938 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-04 03:04:50,964 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 938 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-04 03:04:50,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2025-03-04 03:04:50,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2025-03-04 03:04:50,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 125 states have (on average 1.192) internal successors, (149), 126 states have internal predecessors, (149), 57 states have call successors, (57), 18 states have call predecessors, (57), 18 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2025-03-04 03:04:50,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 262 transitions. [2025-03-04 03:04:50,980 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 262 transitions. Word has length 148 [2025-03-04 03:04:50,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 03:04:50,980 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 262 transitions. [2025-03-04 03:04:50,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2025-03-04 03:04:50,981 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 262 transitions. [2025-03-04 03:04:50,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2025-03-04 03:04:50,985 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 03:04:50,985 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 03:04:50,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-04 03:04:50,986 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 03:04:50,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 03:04:50,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1978444475, now seen corresponding path program 1 times [2025-03-04 03:04:50,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 03:04:50,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940737395] [2025-03-04 03:04:50,987 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 03:04:50,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 03:04:54,807 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 156 statements into 1 equivalence classes. [2025-03-04 03:04:54,942 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 156 of 156 statements. [2025-03-04 03:04:54,942 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 03:04:54,943 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 03:04:56,326 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2025-03-04 03:04:56,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 03:04:56,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940737395] [2025-03-04 03:04:56,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940737395] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 03:04:56,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216149767] [2025-03-04 03:04:56,327 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 03:04:56,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 03:04:56,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 03:04:56,329 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) [2025-03-04 03:04:56,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-04 03:05:00,672 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 156 statements into 1 equivalence classes. [2025-03-04 03:05:01,087 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 156 of 156 statements. [2025-03-04 03:05:01,087 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 03:05:01,087 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 03:05:01,105 INFO L256 TraceCheckSpWp]: Trace formula consists of 4630 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-04 03:05:01,114 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 03:05:02,830 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2025-03-04 03:05:02,831 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 03:05:02,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216149767] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 03:05:02,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 03:05:02,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2025-03-04 03:05:02,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816865393] [2025-03-04 03:05:02,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 03:05:02,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-04 03:05:02,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 03:05:02,833 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-04 03:05:02,833 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2025-03-04 03:05:02,833 INFO L87 Difference]: Start difference. First operand 201 states and 262 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 4 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2025-03-04 03:05:07,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 03:05:07,305 INFO L93 Difference]: Finished difference Result 372 states and 494 transitions. [2025-03-04 03:05:07,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-04 03:05:07,305 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 4 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 156 [2025-03-04 03:05:07,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 03:05:07,308 INFO L225 Difference]: With dead ends: 372 [2025-03-04 03:05:07,308 INFO L226 Difference]: Without dead ends: 203 [2025-03-04 03:05:07,309 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2025-03-04 03:05:07,310 INFO L435 NwaCegarLoop]: 206 mSDtfsCounter, 297 mSDsluCounter, 983 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 1189 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2025-03-04 03:05:07,310 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 1189 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2025-03-04 03:05:07,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2025-03-04 03:05:07,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2025-03-04 03:05:07,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 126 states have (on average 1.1904761904761905) internal successors, (150), 128 states have internal predecessors, (150), 57 states have call successors, (57), 18 states have call predecessors, (57), 19 states have return successors, (62), 56 states have call predecessors, (62), 56 states have call successors, (62) [2025-03-04 03:05:07,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 269 transitions. [2025-03-04 03:05:07,334 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 269 transitions. Word has length 156 [2025-03-04 03:05:07,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 03:05:07,336 INFO L471 AbstractCegarLoop]: Abstraction has 203 states and 269 transitions. [2025-03-04 03:05:07,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 4 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2025-03-04 03:05:07,336 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 269 transitions. [2025-03-04 03:05:07,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2025-03-04 03:05:07,338 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 03:05:07,339 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 03:05:07,356 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-04 03:05:07,539 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 [2025-03-04 03:05:07,539 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 03:05:07,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 03:05:07,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1369422142, now seen corresponding path program 1 times [2025-03-04 03:05:07,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 03:05:07,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117530200] [2025-03-04 03:05:07,540 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 03:05:07,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 03:05:11,122 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-03-04 03:05:11,247 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-03-04 03:05:11,247 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 03:05:11,247 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 03:05:12,359 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2025-03-04 03:05:12,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 03:05:12,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117530200] [2025-03-04 03:05:12,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117530200] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 03:05:12,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 03:05:12,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-04 03:05:12,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969001617] [2025-03-04 03:05:12,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 03:05:12,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 03:05:12,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 03:05:12,361 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 03:05:12,361 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-04 03:05:12,362 INFO L87 Difference]: Start difference. First operand 203 states and 269 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2025-03-04 03:05:13,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 03:05:13,405 INFO L93 Difference]: Finished difference Result 358 states and 475 transitions. [2025-03-04 03:05:13,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 03:05:13,406 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 171 [2025-03-04 03:05:13,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 03:05:13,410 INFO L225 Difference]: With dead ends: 358 [2025-03-04 03:05:13,410 INFO L226 Difference]: Without dead ends: 203 [2025-03-04 03:05:13,411 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 [2025-03-04 03:05:13,412 INFO L435 NwaCegarLoop]: 243 mSDtfsCounter, 36 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-04 03:05:13,413 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 1132 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-04 03:05:13,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2025-03-04 03:05:13,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2025-03-04 03:05:13,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 126 states have (on average 1.1825396825396826) internal successors, (149), 128 states have internal predecessors, (149), 57 states have call successors, (57), 18 states have call predecessors, (57), 19 states have return successors, (62), 56 states have call predecessors, (62), 56 states have call successors, (62) [2025-03-04 03:05:13,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 268 transitions. [2025-03-04 03:05:13,434 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 268 transitions. Word has length 171 [2025-03-04 03:05:13,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 03:05:13,435 INFO L471 AbstractCegarLoop]: Abstraction has 203 states and 268 transitions. [2025-03-04 03:05:13,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 4 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2025-03-04 03:05:13,436 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 268 transitions. [2025-03-04 03:05:13,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2025-03-04 03:05:13,438 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 03:05:13,438 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 03:05:13,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-04 03:05:13,438 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 03:05:13,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 03:05:13,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1853508391, now seen corresponding path program 1 times [2025-03-04 03:05:13,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 03:05:13,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808951284] [2025-03-04 03:05:13,439 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 03:05:13,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 03:05:17,010 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 187 statements into 1 equivalence classes. [2025-03-04 03:05:17,142 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 187 of 187 statements. [2025-03-04 03:05:17,143 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 03:05:17,143 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 03:05:18,789 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2025-03-04 03:05:18,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 03:05:18,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808951284] [2025-03-04 03:05:18,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808951284] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 03:05:18,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686668747] [2025-03-04 03:05:18,790 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 03:05:18,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 03:05:18,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 03:05:18,792 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) [2025-03-04 03:05:18,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-04 03:05:23,239 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 187 statements into 1 equivalence classes. [2025-03-04 03:05:23,643 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 187 of 187 statements. [2025-03-04 03:05:23,644 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 03:05:23,644 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 03:05:23,665 INFO L256 TraceCheckSpWp]: Trace formula consists of 4824 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-04 03:05:23,673 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 03:05:25,829 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2025-03-04 03:05:25,830 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 03:05:25,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686668747] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 03:05:25,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 03:05:25,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 15 [2025-03-04 03:05:25,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038051177] [2025-03-04 03:05:25,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 03:05:25,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-04 03:05:25,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 03:05:25,831 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-04 03:05:25,831 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2025-03-04 03:05:25,831 INFO L87 Difference]: Start difference. First operand 203 states and 268 transitions. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 5 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) [2025-03-04 03:05:31,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 03:05:31,448 INFO L93 Difference]: Finished difference Result 371 states and 492 transitions. [2025-03-04 03:05:31,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-04 03:05:31,448 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 5 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) Word has length 187 [2025-03-04 03:05:31,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 03:05:31,450 INFO L225 Difference]: With dead ends: 371 [2025-03-04 03:05:31,450 INFO L226 Difference]: Without dead ends: 203 [2025-03-04 03:05:31,451 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2025-03-04 03:05:31,451 INFO L435 NwaCegarLoop]: 197 mSDtfsCounter, 314 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 1317 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2025-03-04 03:05:31,452 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 1317 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2025-03-04 03:05:31,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2025-03-04 03:05:31,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2025-03-04 03:05:31,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 126 states have (on average 1.1825396825396826) internal successors, (149), 128 states have internal predecessors, (149), 57 states have call successors, (57), 18 states have call predecessors, (57), 19 states have return successors, (61), 56 states have call predecessors, (61), 56 states have call successors, (61) [2025-03-04 03:05:31,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 267 transitions. [2025-03-04 03:05:31,461 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 267 transitions. Word has length 187 [2025-03-04 03:05:31,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 03:05:31,461 INFO L471 AbstractCegarLoop]: Abstraction has 203 states and 267 transitions. [2025-03-04 03:05:31,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 5 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) [2025-03-04 03:05:31,461 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 267 transitions. [2025-03-04 03:05:31,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2025-03-04 03:05:31,463 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 03:05:31,463 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 03:05:31,490 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-04 03:05:31,663 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 [2025-03-04 03:05:31,664 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 03:05:31,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 03:05:31,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1286987474, now seen corresponding path program 2 times [2025-03-04 03:05:31,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 03:05:31,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394829076] [2025-03-04 03:05:31,665 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 03:05:31,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 03:05:35,244 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 202 statements into 2 equivalence classes. [2025-03-04 03:05:35,375 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 28 of 202 statements. [2025-03-04 03:05:35,375 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-04 03:05:35,376 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 03:05:37,295 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2025-03-04 03:05:37,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 03:05:37,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394829076] [2025-03-04 03:05:37,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394829076] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 03:05:37,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 03:05:37,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-04 03:05:37,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670156143] [2025-03-04 03:05:37,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 03:05:37,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 03:05:37,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 03:05:37,297 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 03:05:37,297 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-04 03:05:37,298 INFO L87 Difference]: Start difference. First operand 203 states and 267 transitions. Second operand has 6 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 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) [2025-03-04 03:05:37,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 03:05:37,714 INFO L93 Difference]: Finished difference Result 211 states and 275 transitions. [2025-03-04 03:05:37,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 03:05:37,715 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 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 202 [2025-03-04 03:05:37,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 03:05:37,717 INFO L225 Difference]: With dead ends: 211 [2025-03-04 03:05:37,717 INFO L226 Difference]: Without dead ends: 209 [2025-03-04 03:05:37,717 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 [2025-03-04 03:05:37,718 INFO L435 NwaCegarLoop]: 258 mSDtfsCounter, 3 mSDsluCounter, 1020 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1278 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 [2025-03-04 03:05:37,718 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1278 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-04 03:05:37,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2025-03-04 03:05:37,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 208. [2025-03-04 03:05:37,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 129 states have (on average 1.178294573643411) internal successors, (152), 131 states have internal predecessors, (152), 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) [2025-03-04 03:05:37,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 272 transitions. [2025-03-04 03:05:37,728 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 272 transitions. Word has length 202 [2025-03-04 03:05:37,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 03:05:37,728 INFO L471 AbstractCegarLoop]: Abstraction has 208 states and 272 transitions. [2025-03-04 03:05:37,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 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) [2025-03-04 03:05:37,728 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 272 transitions. [2025-03-04 03:05:37,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2025-03-04 03:05:37,730 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 03:05:37,730 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, 1, 1, 1] [2025-03-04 03:05:37,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-04 03:05:37,730 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 03:05:37,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 03:05:37,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1173779531, now seen corresponding path program 3 times [2025-03-04 03:05:37,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 03:05:37,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101940918] [2025-03-04 03:05:37,731 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 03:05:37,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 03:05:41,300 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 217 statements into 7 equivalence classes. [2025-03-04 03:05:42,803 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 64 of 217 statements. [2025-03-04 03:05:42,804 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-04 03:05:42,804 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 03:05:44,909 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2025-03-04 03:05:44,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 03:05:44,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101940918] [2025-03-04 03:05:44,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101940918] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 03:05:44,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859037664] [2025-03-04 03:05:44,910 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 03:05:44,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 03:05:44,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 03:05:44,912 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) [2025-03-04 03:05:44,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-04 03:05:49,618 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 217 statements into 7 equivalence classes.