./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d7c0f5b67426dc3769ace794e9c8c036d37ffa3960449e6b59343c653ea0c545 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 16:54:19,024 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 16:54:19,082 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-01-09 16:54:19,088 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 16:54:19,091 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 16:54:19,116 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 16:54:19,118 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 16:54:19,119 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 16:54:19,119 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 16:54:19,119 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 16:54:19,119 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 16:54:19,119 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 16:54:19,120 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 16:54:19,120 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 16:54:19,120 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 16:54:19,120 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 16:54:19,120 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 16:54:19,120 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 16:54:19,120 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 16:54:19,120 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 16:54:19,120 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 16:54:19,121 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 16:54:19,121 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 16:54:19,121 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 16:54:19,121 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 16:54:19,121 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 16:54:19,121 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 16:54:19,121 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 16:54:19,121 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 16:54:19,121 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:54:19,121 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 16:54:19,121 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 16:54:19,121 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 16:54:19,122 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 16:54:19,122 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:54:19,122 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 16:54:19,122 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 16:54:19,122 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 16:54:19,122 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 16:54:19,122 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 16:54:19,122 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 16:54:19,122 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 16:54:19,122 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 16:54:19,122 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 16:54:19,123 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 16:54:19,123 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7c0f5b67426dc3769ace794e9c8c036d37ffa3960449e6b59343c653ea0c545 [2025-01-09 16:54:19,375 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 16:54:19,381 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 16:54:19,382 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 16:54:19,383 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 16:54:19,383 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 16:54:19,385 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness.i [2025-01-09 16:54:20,527 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5f49b5a42/cd95bf5bb9214f2ba66cadc8fd7e2964/FLAGedbec693c [2025-01-09 16:54:21,034 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 16:54:21,035 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness.i [2025-01-09 16:54:21,066 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5f49b5a42/cd95bf5bb9214f2ba66cadc8fd7e2964/FLAGedbec693c [2025-01-09 16:54:21,132 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5f49b5a42/cd95bf5bb9214f2ba66cadc8fd7e2964 [2025-01-09 16:54:21,134 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 16:54:21,135 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 16:54:21,136 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 16:54:21,136 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 16:54:21,139 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 16:54:21,139 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:54:21" (1/1) ... [2025-01-09 16:54:21,140 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11e9f8d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:54:21, skipping insertion in model container [2025-01-09 16:54:21,140 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:54:21" (1/1) ... [2025-01-09 16:54:21,200 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 16:54:21,421 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness.i[4493,4506] [2025-01-09 16:54:21,428 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness.i[4553,4566] [2025-01-09 16:54:21,977 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:54:21,978 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:54:21,978 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:54:21,979 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:54:21,979 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:54:21,987 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:54:21,987 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:54:21,988 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:54:21,988 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:54:21,989 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:54:21,990 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:54:21,990 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:54:21,991 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:54:22,288 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:54:22,289 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:54:22,296 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:54:22,301 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:54:22,341 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 16:54:22,369 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 16:54:22,384 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness.i[4493,4506] [2025-01-09 16:54:22,388 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness.i[4553,4566] [2025-01-09 16:54:22,428 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:54:22,428 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:54:22,429 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:54:22,429 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:54:22,429 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:54:22,434 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:54:22,434 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:54:22,434 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:54:22,435 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:54:22,435 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:54:22,436 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:54:22,436 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:54:22,436 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:54:22,529 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:54:22,532 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:54:22,533 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:54:22,541 WARN L1731 CHandler]: Possible shadowing of function index [2025-01-09 16:54:22,545 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7775-7786] [2025-01-09 16:54:22,562 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 16:54:22,690 INFO L204 MainTranslator]: Completed translation [2025-01-09 16:54:22,691 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:54:22 WrapperNode [2025-01-09 16:54:22,691 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 16:54:22,692 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 16:54:22,692 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 16:54:22,692 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 16:54:22,699 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:54:22" (1/1) ... [2025-01-09 16:54:22,744 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:54:22" (1/1) ... [2025-01-09 16:54:22,790 INFO L138 Inliner]: procedures = 680, calls = 1678, calls flagged for inlining = 52, calls inlined = 7, statements flattened = 718 [2025-01-09 16:54:22,791 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 16:54:22,791 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 16:54:22,791 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 16:54:22,791 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 16:54:22,800 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:54:22" (1/1) ... [2025-01-09 16:54:22,800 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:54:22" (1/1) ... [2025-01-09 16:54:22,805 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:54:22" (1/1) ... [2025-01-09 16:54:22,866 INFO L175 MemorySlicer]: Split 313 memory accesses to 5 slices as follows [7, 238, 2, 57, 9]. 76 percent of accesses are in the largest equivalence class. The 24 initializations are split as follows [5, 6, 2, 10, 1]. The 241 writes are split as follows [1, 232, 0, 7, 1]. [2025-01-09 16:54:22,866 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:54:22" (1/1) ... [2025-01-09 16:54:22,866 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:54:22" (1/1) ... [2025-01-09 16:54:22,893 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:54:22" (1/1) ... [2025-01-09 16:54:22,898 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:54:22" (1/1) ... [2025-01-09 16:54:22,903 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:54:22" (1/1) ... [2025-01-09 16:54:22,912 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:54:22" (1/1) ... [2025-01-09 16:54:22,915 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:54:22" (1/1) ... [2025-01-09 16:54:22,931 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 16:54:22,932 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 16:54:22,932 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 16:54:22,932 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 16:54:22,933 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:54:22" (1/1) ... [2025-01-09 16:54:22,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:54:22,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:54:22,961 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 16:54:22,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 16:54:22,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-09 16:54:22,980 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2025-01-09 16:54:22,981 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2025-01-09 16:54:22,981 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2025-01-09 16:54:22,981 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2025-01-09 16:54:22,981 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2025-01-09 16:54:22,981 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2025-01-09 16:54:22,981 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2025-01-09 16:54:22,982 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2025-01-09 16:54:22,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2025-01-09 16:54:22,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2025-01-09 16:54:22,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2025-01-09 16:54:22,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2025-01-09 16:54:22,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2025-01-09 16:54:22,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-09 16:54:22,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-09 16:54:22,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-01-09 16:54:22,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-01-09 16:54:22,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-01-09 16:54:22,983 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2025-01-09 16:54:22,983 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2025-01-09 16:54:22,983 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-01-09 16:54:22,983 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-01-09 16:54:22,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-09 16:54:22,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 16:54:22,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-01-09 16:54:22,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-01-09 16:54:22,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-01-09 16:54:22,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-01-09 16:54:22,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2025-01-09 16:54:22,985 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2025-01-09 16:54:22,985 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2025-01-09 16:54:22,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 16:54:22,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 16:54:22,985 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2025-01-09 16:54:22,985 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2025-01-09 16:54:22,985 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2025-01-09 16:54:22,985 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2025-01-09 16:54:22,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2025-01-09 16:54:22,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2025-01-09 16:54:22,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2025-01-09 16:54:22,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2025-01-09 16:54:22,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2025-01-09 16:54:22,985 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2025-01-09 16:54:22,985 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2025-01-09 16:54:22,985 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2025-01-09 16:54:22,985 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2025-01-09 16:54:22,985 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-01-09 16:54:22,986 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-01-09 16:54:22,986 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2025-01-09 16:54:22,986 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2025-01-09 16:54:22,986 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2025-01-09 16:54:22,986 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2025-01-09 16:54:22,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-09 16:54:22,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-01-09 16:54:22,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-01-09 16:54:22,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-01-09 16:54:22,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-01-09 16:54:22,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-01-09 16:54:22,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-01-09 16:54:22,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-01-09 16:54:22,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-01-09 16:54:22,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-01-09 16:54:22,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2025-01-09 16:54:22,986 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2025-01-09 16:54:22,986 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2025-01-09 16:54:22,986 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2025-01-09 16:54:22,986 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2025-01-09 16:54:22,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-09 16:54:22,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-09 16:54:22,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-01-09 16:54:22,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-01-09 16:54:22,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-01-09 16:54:22,986 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2025-01-09 16:54:22,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2025-01-09 16:54:22,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 16:54:22,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-09 16:54:22,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-01-09 16:54:22,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-01-09 16:54:22,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-01-09 16:54:23,211 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 16:54:23,212 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 16:54:29,124 INFO L? ?]: Removed 94 outVars from TransFormulas that were not future-live. [2025-01-09 16:54:29,124 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 16:54:29,134 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 16:54:29,136 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-09 16:54:29,136 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:54:29 BoogieIcfgContainer [2025-01-09 16:54:29,136 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 16:54:29,138 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 16:54:29,138 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 16:54:29,141 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 16:54:29,141 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 04:54:21" (1/3) ... [2025-01-09 16:54:29,141 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e133f96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:54:29, skipping insertion in model container [2025-01-09 16:54:29,142 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:54:22" (2/3) ... [2025-01-09 16:54:29,143 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e133f96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:54:29, skipping insertion in model container [2025-01-09 16:54:29,143 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:54:29" (3/3) ... [2025-01-09 16:54:29,143 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_array_list_copy_harness.i [2025-01-09 16:54:29,153 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 16:54:29,155 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_array_list_copy_harness.i that has 18 procedures, 209 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-01-09 16:54:29,199 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 16:54:29,207 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;@4a1684df, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 16:54:29,208 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 16:54:29,211 INFO L276 IsEmpty]: Start isEmpty. Operand has 209 states, 119 states have (on average 1.184873949579832) internal successors, (141), 120 states have internal predecessors, (141), 71 states have call successors, (71), 17 states have call predecessors, (71), 17 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2025-01-09 16:54:29,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2025-01-09 16:54:29,222 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 16:54:29,223 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 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] [2025-01-09 16:54:29,224 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 16:54:29,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:54:29,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1329126664, now seen corresponding path program 1 times [2025-01-09 16:54:29,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:54:29,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086193535] [2025-01-09 16:54:29,235 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:54:29,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:54:33,444 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 145 statements into 1 equivalence classes. [2025-01-09 16:54:33,757 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 145 of 145 statements. [2025-01-09 16:54:33,757 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:54:33,757 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:54:34,095 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2025-01-09 16:54:34,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:54:34,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086193535] [2025-01-09 16:54:34,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086193535] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:54:34,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511739933] [2025-01-09 16:54:34,096 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:54:34,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:54:34,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:54:34,099 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:54:34,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-09 16:54:38,306 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 145 statements into 1 equivalence classes. [2025-01-09 16:54:38,760 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 145 of 145 statements. [2025-01-09 16:54:38,761 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:54:38,761 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:54:38,780 INFO L256 TraceCheckSpWp]: Trace formula consists of 4363 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-01-09 16:54:38,788 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:54:38,802 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2025-01-09 16:54:38,803 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 16:54:38,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511739933] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:54:38,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 16:54:38,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-01-09 16:54:38,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069045388] [2025-01-09 16:54:38,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:54:38,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 16:54:38,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:54:38,820 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 16:54:38,821 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 16:54:38,823 INFO L87 Difference]: Start difference. First operand has 209 states, 119 states have (on average 1.184873949579832) internal successors, (141), 120 states have internal predecessors, (141), 71 states have call successors, (71), 17 states have call predecessors, (71), 17 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) Second operand has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2025-01-09 16:54:38,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 16:54:38,852 INFO L93 Difference]: Finished difference Result 414 states and 603 transitions. [2025-01-09 16:54:38,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 16:54:38,854 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 145 [2025-01-09 16:54:38,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 16:54:38,860 INFO L225 Difference]: With dead ends: 414 [2025-01-09 16:54:38,860 INFO L226 Difference]: Without dead ends: 204 [2025-01-09 16:54:38,864 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 16:54:38,866 INFO L435 NwaCegarLoop]: 281 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, 281 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 [2025-01-09 16:54:38,866 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 16:54:38,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2025-01-09 16:54:38,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2025-01-09 16:54:38,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 115 states have (on average 1.173913043478261) internal successors, (135), 116 states have internal predecessors, (135), 71 states have call successors, (71), 17 states have call predecessors, (71), 17 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2025-01-09 16:54:38,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 276 transitions. [2025-01-09 16:54:38,902 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 276 transitions. Word has length 145 [2025-01-09 16:54:38,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 16:54:38,903 INFO L471 AbstractCegarLoop]: Abstraction has 204 states and 276 transitions. [2025-01-09 16:54:38,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2025-01-09 16:54:38,904 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 276 transitions. [2025-01-09 16:54:38,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2025-01-09 16:54:38,906 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 16:54:38,906 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 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] [2025-01-09 16:54:38,920 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-09 16:54:39,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-01-09 16:54:39,111 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 16:54:39,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:54:39,111 INFO L85 PathProgramCache]: Analyzing trace with hash -433130932, now seen corresponding path program 1 times [2025-01-09 16:54:39,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:54:39,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966265839] [2025-01-09 16:54:39,111 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:54:39,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:54:42,894 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 145 statements into 1 equivalence classes. [2025-01-09 16:54:42,995 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 145 of 145 statements. [2025-01-09 16:54:42,995 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:54:42,995 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:54:43,393 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2025-01-09 16:54:43,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:54:43,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966265839] [2025-01-09 16:54:43,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966265839] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:54:43,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244135844] [2025-01-09 16:54:43,393 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:54:43,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:54:43,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:54:43,397 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:54:43,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-09 16:54:47,581 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 145 statements into 1 equivalence classes. [2025-01-09 16:54:48,005 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 145 of 145 statements. [2025-01-09 16:54:48,005 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:54:48,005 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:54:48,025 INFO L256 TraceCheckSpWp]: Trace formula consists of 4363 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-01-09 16:54:48,032 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:54:48,059 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2025-01-09 16:54:48,059 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 16:54:48,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244135844] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:54:48,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 16:54:48,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 3 [2025-01-09 16:54:48,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793057608] [2025-01-09 16:54:48,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:54:48,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 16:54:48,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:54:48,061 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 16:54:48,061 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 16:54:48,061 INFO L87 Difference]: Start difference. First operand 204 states and 276 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2025-01-09 16:54:48,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 16:54:48,133 INFO L93 Difference]: Finished difference Result 403 states and 547 transitions. [2025-01-09 16:54:48,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 16:54:48,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 145 [2025-01-09 16:54:48,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 16:54:48,136 INFO L225 Difference]: With dead ends: 403 [2025-01-09 16:54:48,136 INFO L226 Difference]: Without dead ends: 205 [2025-01-09 16:54:48,137 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 16:54:48,137 INFO L435 NwaCegarLoop]: 275 mSDtfsCounter, 0 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 16:54:48,138 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 546 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 16:54:48,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2025-01-09 16:54:48,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2025-01-09 16:54:48,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 116 states have (on average 1.1724137931034482) internal successors, (136), 117 states have internal predecessors, (136), 71 states have call successors, (71), 17 states have call predecessors, (71), 17 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2025-01-09 16:54:48,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 277 transitions. [2025-01-09 16:54:48,152 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 277 transitions. Word has length 145 [2025-01-09 16:54:48,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 16:54:48,152 INFO L471 AbstractCegarLoop]: Abstraction has 205 states and 277 transitions. [2025-01-09 16:54:48,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2025-01-09 16:54:48,152 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 277 transitions. [2025-01-09 16:54:48,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2025-01-09 16:54:48,153 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 16:54:48,154 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 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] [2025-01-09 16:54:48,216 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-09 16:54:48,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:54:48,358 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 16:54:48,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:54:48,360 INFO L85 PathProgramCache]: Analyzing trace with hash 995250632, now seen corresponding path program 1 times [2025-01-09 16:54:48,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:54:48,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140039976] [2025-01-09 16:54:48,360 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:54:48,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:54:51,889 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 145 statements into 1 equivalence classes. [2025-01-09 16:54:51,985 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 145 of 145 statements. [2025-01-09 16:54:51,985 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:54:51,985 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:54:52,834 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2025-01-09 16:54:52,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:54:52,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140039976] [2025-01-09 16:54:52,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140039976] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:54:52,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066335360] [2025-01-09 16:54:52,837 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:54:52,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:54:52,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:54:52,839 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:54:52,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-09 16:54:56,838 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 145 statements into 1 equivalence classes. [2025-01-09 16:54:57,253 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 145 of 145 statements. [2025-01-09 16:54:57,253 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:54:57,253 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:54:57,271 INFO L256 TraceCheckSpWp]: Trace formula consists of 4369 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-09 16:54:57,277 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:54:57,890 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2025-01-09 16:54:57,890 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 16:54:57,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066335360] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:54:57,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 16:54:57,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2025-01-09 16:54:57,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597374210] [2025-01-09 16:54:57,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:54:57,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 16:54:57,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:54:57,891 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 16:54:57,892 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-01-09 16:54:57,892 INFO L87 Difference]: Start difference. First operand 205 states and 277 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2025-01-09 16:55:00,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 16:55:00,868 INFO L93 Difference]: Finished difference Result 405 states and 558 transitions. [2025-01-09 16:55:00,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 16:55:00,868 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 145 [2025-01-09 16:55:00,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 16:55:00,872 INFO L225 Difference]: With dead ends: 405 [2025-01-09 16:55:00,872 INFO L226 Difference]: Without dead ends: 207 [2025-01-09 16:55:00,873 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2025-01-09 16:55:00,873 INFO L435 NwaCegarLoop]: 213 mSDtfsCounter, 282 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2025-01-09 16:55:00,874 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 779 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2025-01-09 16:55:00,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2025-01-09 16:55:00,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2025-01-09 16:55:00,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 117 states have (on average 1.170940170940171) internal successors, (137), 119 states have internal predecessors, (137), 71 states have call successors, (71), 17 states have call predecessors, (71), 18 states have return successors, (82), 70 states have call predecessors, (82), 70 states have call successors, (82) [2025-01-09 16:55:00,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 290 transitions. [2025-01-09 16:55:00,889 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 290 transitions. Word has length 145 [2025-01-09 16:55:00,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 16:55:00,889 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 290 transitions. [2025-01-09 16:55:00,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2025-01-09 16:55:00,889 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 290 transitions. [2025-01-09 16:55:00,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2025-01-09 16:55:00,891 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 16:55:00,891 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 4, 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] [2025-01-09 16:55:00,907 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-09 16:55:01,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:55:01,095 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 16:55:01,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:55:01,095 INFO L85 PathProgramCache]: Analyzing trace with hash -139108393, now seen corresponding path program 1 times [2025-01-09 16:55:01,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:55:01,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19938487] [2025-01-09 16:55:01,096 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:55:01,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:55:04,568 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 160 statements into 1 equivalence classes. [2025-01-09 16:55:04,673 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 160 of 160 statements. [2025-01-09 16:55:04,673 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:55:04,673 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:55:05,482 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2025-01-09 16:55:05,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:55:05,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19938487] [2025-01-09 16:55:05,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19938487] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:55:05,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721700929] [2025-01-09 16:55:05,482 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:55:05,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:55:05,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:55:05,485 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:55:05,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-09 16:55:09,602 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 160 statements into 1 equivalence classes. [2025-01-09 16:55:10,087 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 160 of 160 statements. [2025-01-09 16:55:10,087 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:55:10,087 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:55:10,108 INFO L256 TraceCheckSpWp]: Trace formula consists of 4496 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-09 16:55:10,124 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:55:10,858 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2025-01-09 16:55:10,858 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 16:55:10,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721700929] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:55:10,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 16:55:10,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2025-01-09 16:55:10,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652126468] [2025-01-09 16:55:10,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:55:10,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 16:55:10,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:55:10,860 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 16:55:10,860 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-01-09 16:55:10,860 INFO L87 Difference]: Start difference. First operand 207 states and 290 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2025-01-09 16:55:13,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 16:55:13,592 INFO L93 Difference]: Finished difference Result 380 states and 530 transitions. [2025-01-09 16:55:13,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 16:55:13,593 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 160 [2025-01-09 16:55:13,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 16:55:13,595 INFO L225 Difference]: With dead ends: 380 [2025-01-09 16:55:13,595 INFO L226 Difference]: Without dead ends: 207 [2025-01-09 16:55:13,596 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2025-01-09 16:55:13,596 INFO L435 NwaCegarLoop]: 214 mSDtfsCounter, 280 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2025-01-09 16:55:13,597 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 782 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2025-01-09 16:55:13,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2025-01-09 16:55:13,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2025-01-09 16:55:13,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 117 states have (on average 1.170940170940171) internal successors, (137), 119 states have internal predecessors, (137), 71 states have call successors, (71), 17 states have call predecessors, (71), 18 states have return successors, (80), 70 states have call predecessors, (80), 70 states have call successors, (80) [2025-01-09 16:55:13,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 288 transitions. [2025-01-09 16:55:13,623 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 288 transitions. Word has length 160 [2025-01-09 16:55:13,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 16:55:13,624 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 288 transitions. [2025-01-09 16:55:13,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2025-01-09 16:55:13,624 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 288 transitions. [2025-01-09 16:55:13,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2025-01-09 16:55:13,625 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 16:55:13,626 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 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, 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] [2025-01-09 16:55:13,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-01-09 16:55:13,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:55:13,826 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 16:55:13,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:55:13,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1577477002, now seen corresponding path program 2 times [2025-01-09 16:55:13,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:55:13,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707874357] [2025-01-09 16:55:13,827 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:55:13,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:55:17,314 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 175 statements into 2 equivalence classes. [2025-01-09 16:55:17,391 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 33 of 175 statements. [2025-01-09 16:55:17,391 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-09 16:55:17,392 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:55:18,099 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2025-01-09 16:55:18,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:55:18,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707874357] [2025-01-09 16:55:18,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707874357] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:55:18,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:55:18,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 16:55:18,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994111298] [2025-01-09 16:55:18,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:55:18,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 16:55:18,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:55:18,100 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 16:55:18,100 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 16:55:18,100 INFO L87 Difference]: Start difference. First operand 207 states and 288 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2025-01-09 16:55:18,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 16:55:18,273 INFO L93 Difference]: Finished difference Result 266 states and 364 transitions. [2025-01-09 16:55:18,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 16:55:18,274 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) Word has length 175 [2025-01-09 16:55:18,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 16:55:18,276 INFO L225 Difference]: With dead ends: 266 [2025-01-09 16:55:18,277 INFO L226 Difference]: Without dead ends: 212 [2025-01-09 16:55:18,277 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 [2025-01-09 16:55:18,279 INFO L435 NwaCegarLoop]: 273 mSDtfsCounter, 0 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1086 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 16:55:18,279 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1086 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 16:55:18,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2025-01-09 16:55:18,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2025-01-09 16:55:18,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 121 states have (on average 1.165289256198347) internal successors, (141), 123 states have internal predecessors, (141), 71 states have call successors, (71), 17 states have call predecessors, (71), 19 states have return successors, (82), 71 states have call predecessors, (82), 70 states have call successors, (82) [2025-01-09 16:55:18,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 294 transitions. [2025-01-09 16:55:18,297 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 294 transitions. Word has length 175 [2025-01-09 16:55:18,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 16:55:18,298 INFO L471 AbstractCegarLoop]: Abstraction has 212 states and 294 transitions. [2025-01-09 16:55:18,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2025-01-09 16:55:18,298 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 294 transitions. [2025-01-09 16:55:18,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2025-01-09 16:55:18,299 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 16:55:18,299 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 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, 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] [2025-01-09 16:55:18,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-09 16:55:18,300 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 16:55:18,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:55:18,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1443434910, now seen corresponding path program 1 times [2025-01-09 16:55:18,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:55:18,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887610387] [2025-01-09 16:55:18,300 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:55:18,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:55:21,709 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 181 statements into 1 equivalence classes. [2025-01-09 16:55:21,835 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 181 of 181 statements. [2025-01-09 16:55:21,836 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:55:21,837 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:55:22,897 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2025-01-09 16:55:22,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:55:22,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887610387] [2025-01-09 16:55:22,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887610387] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:55:22,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411646550] [2025-01-09 16:55:22,897 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:55:22,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:55:22,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:55:22,904 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:55:22,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-01-09 16:55:27,163 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 181 statements into 1 equivalence classes. [2025-01-09 16:55:27,584 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 181 of 181 statements. [2025-01-09 16:55:27,584 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:55:27,584 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:55:27,606 INFO L256 TraceCheckSpWp]: Trace formula consists of 4627 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-09 16:55:27,612 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:55:28,786 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2025-01-09 16:55:28,786 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 16:55:28,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411646550] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:55:28,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 16:55:28,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2025-01-09 16:55:28,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556414429] [2025-01-09 16:55:28,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:55:28,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 16:55:28,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:55:28,790 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 16:55:28,790 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-01-09 16:55:28,790 INFO L87 Difference]: Start difference. First operand 212 states and 294 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2025-01-09 16:55:32,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 16:55:32,110 INFO L93 Difference]: Finished difference Result 379 states and 521 transitions. [2025-01-09 16:55:32,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 16:55:32,110 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 181 [2025-01-09 16:55:32,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 16:55:32,112 INFO L225 Difference]: With dead ends: 379 [2025-01-09 16:55:32,112 INFO L226 Difference]: Without dead ends: 212 [2025-01-09 16:55:32,113 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2025-01-09 16:55:32,114 INFO L435 NwaCegarLoop]: 208 mSDtfsCounter, 308 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2025-01-09 16:55:32,114 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 945 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2025-01-09 16:55:32,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2025-01-09 16:55:32,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2025-01-09 16:55:32,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 121 states have (on average 1.165289256198347) internal successors, (141), 123 states have internal predecessors, (141), 71 states have call successors, (71), 17 states have call predecessors, (71), 19 states have return successors, (77), 71 states have call predecessors, (77), 70 states have call successors, (77) [2025-01-09 16:55:32,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 289 transitions. [2025-01-09 16:55:32,124 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 289 transitions. Word has length 181 [2025-01-09 16:55:32,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 16:55:32,124 INFO L471 AbstractCegarLoop]: Abstraction has 212 states and 289 transitions. [2025-01-09 16:55:32,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2025-01-09 16:55:32,125 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 289 transitions. [2025-01-09 16:55:32,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2025-01-09 16:55:32,126 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 16:55:32,126 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2025-01-09 16:55:32,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-01-09 16:55:32,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:55:32,330 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 16:55:32,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:55:32,330 INFO L85 PathProgramCache]: Analyzing trace with hash 447772293, now seen corresponding path program 1 times [2025-01-09 16:55:32,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:55:32,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643716220] [2025-01-09 16:55:32,331 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:55:32,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:55:35,852 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 195 statements into 1 equivalence classes. [2025-01-09 16:55:35,924 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 195 of 195 statements. [2025-01-09 16:55:35,925 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:55:35,925 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:55:36,855 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 366 trivial. 0 not checked. [2025-01-09 16:55:36,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:55:36,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643716220] [2025-01-09 16:55:36,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643716220] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:55:36,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:55:36,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 16:55:36,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030083167] [2025-01-09 16:55:36,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:55:36,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 16:55:36,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:55:36,856 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 16:55:36,856 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-01-09 16:55:36,856 INFO L87 Difference]: Start difference. First operand 212 states and 289 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 4 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2025-01-09 16:55:38,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 16:55:38,063 INFO L93 Difference]: Finished difference Result 376 states and 506 transitions. [2025-01-09 16:55:38,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 16:55:38,064 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 4 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 195 [2025-01-09 16:55:38,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 16:55:38,066 INFO L225 Difference]: With dead ends: 376 [2025-01-09 16:55:38,066 INFO L226 Difference]: Without dead ends: 210 [2025-01-09 16:55:38,066 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-01-09 16:55:38,067 INFO L435 NwaCegarLoop]: 256 mSDtfsCounter, 46 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 1092 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-01-09 16:55:38,067 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 1092 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-01-09 16:55:38,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2025-01-09 16:55:38,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2025-01-09 16:55:38,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 120 states have (on average 1.1583333333333334) internal successors, (139), 121 states have internal predecessors, (139), 71 states have call successors, (71), 17 states have call predecessors, (71), 18 states have return successors, (72), 71 states have call predecessors, (72), 70 states have call successors, (72) [2025-01-09 16:55:38,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 282 transitions. [2025-01-09 16:55:38,081 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 282 transitions. Word has length 195 [2025-01-09 16:55:38,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 16:55:38,081 INFO L471 AbstractCegarLoop]: Abstraction has 210 states and 282 transitions. [2025-01-09 16:55:38,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 4 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2025-01-09 16:55:38,082 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 282 transitions. [2025-01-09 16:55:38,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2025-01-09 16:55:38,083 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 16:55:38,083 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2025-01-09 16:55:38,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-01-09 16:55:38,084 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 16:55:38,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:55:38,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1713877896, now seen corresponding path program 1 times [2025-01-09 16:55:38,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:55:38,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134437688] [2025-01-09 16:55:38,084 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:55:38,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:55:41,674 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 210 statements into 1 equivalence classes. [2025-01-09 16:55:41,803 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 210 of 210 statements. [2025-01-09 16:55:41,803 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:55:41,803 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:55:44,730 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 419 trivial. 0 not checked. [2025-01-09 16:55:44,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:55:44,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134437688] [2025-01-09 16:55:44,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134437688] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:55:44,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:55:44,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-01-09 16:55:44,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407625751] [2025-01-09 16:55:44,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:55:44,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-09 16:55:44,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:55:44,731 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-09 16:55:44,731 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-01-09 16:55:44,731 INFO L87 Difference]: Start difference. First operand 210 states and 282 transitions. Second operand has 10 states, 10 states have (on average 6.0) internal successors, (60), 9 states have internal predecessors, (60), 6 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 7 states have call predecessors, (26), 6 states have call successors, (26) [2025-01-09 16:55:48,782 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-01-09 16:55:53,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers []