./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_eq_harness-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473ba71e-9cd6-405e-b31a-2eee927a3e6e/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473ba71e-9cd6-405e-b31a-2eee927a3e6e/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473ba71e-9cd6-405e-b31a-2eee927a3e6e/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473ba71e-9cd6-405e-b31a-2eee927a3e6e/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_eq_harness-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473ba71e-9cd6-405e-b31a-2eee927a3e6e/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473ba71e-9cd6-405e-b31a-2eee927a3e6e/bin/uautomizer-verify-aQ6SnzHsRB --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 56930072253bb80620cfd5323053bdb4c7b4f32002f7dcce9e2ae892c8088a26 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:01:40,812 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:01:40,908 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473ba71e-9cd6-405e-b31a-2eee927a3e6e/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-27 20:01:40,914 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:01:40,915 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:01:40,950 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:01:40,951 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:01:40,951 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:01:40,951 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:01:40,952 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:01:40,953 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:01:40,953 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:01:40,953 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:01:40,953 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:01:40,953 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:01:40,954 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:01:40,954 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 20:01:40,954 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:01:40,954 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:01:40,954 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 20:01:40,954 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:01:40,954 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 20:01:40,954 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:01:40,954 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:01:40,954 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:01:40,955 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:01:40,955 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:01:40,955 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:01:40,955 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:01:40,955 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:01:40,955 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:01:40,955 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:01:40,955 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:01:40,955 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:01:40,955 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:01:40,956 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:01:40,956 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:01:40,956 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 20:01:40,956 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 20:01:40,956 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:01:40,956 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:01:40,956 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:01:40,957 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:01:40,957 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:01:40,957 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:01:40,957 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 -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473ba71e-9cd6-405e-b31a-2eee927a3e6e/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 56930072253bb80620cfd5323053bdb4c7b4f32002f7dcce9e2ae892c8088a26 [2024-11-27 20:01:41,235 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:01:41,249 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:01:41,252 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:01:41,253 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:01:41,254 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:01:41,256 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473ba71e-9cd6-405e-b31a-2eee927a3e6e/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/aws-c-common/aws_array_eq_harness-1.i [2024-11-27 20:01:44,201 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473ba71e-9cd6-405e-b31a-2eee927a3e6e/bin/uautomizer-verify-aQ6SnzHsRB/data/de35818fe/ecf6cce4c1e5458fbaeba1b09911c141/FLAG5d8f8765a [2024-11-27 20:01:44,982 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:01:44,983 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473ba71e-9cd6-405e-b31a-2eee927a3e6e/sv-benchmarks/c/aws-c-common/aws_array_eq_harness-1.i [2024-11-27 20:01:45,042 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473ba71e-9cd6-405e-b31a-2eee927a3e6e/bin/uautomizer-verify-aQ6SnzHsRB/data/de35818fe/ecf6cce4c1e5458fbaeba1b09911c141/FLAG5d8f8765a [2024-11-27 20:01:45,065 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473ba71e-9cd6-405e-b31a-2eee927a3e6e/bin/uautomizer-verify-aQ6SnzHsRB/data/de35818fe/ecf6cce4c1e5458fbaeba1b09911c141 [2024-11-27 20:01:45,068 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:01:45,070 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:01:45,071 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:01:45,071 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:01:45,076 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:01:45,079 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:01:45" (1/1) ... [2024-11-27 20:01:45,080 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2420a5b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:01:45, skipping insertion in model container [2024-11-27 20:01:45,080 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:01:45" (1/1) ... [2024-11-27 20:01:45,201 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:01:45,459 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473ba71e-9cd6-405e-b31a-2eee927a3e6e/sv-benchmarks/c/aws-c-common/aws_array_eq_harness-1.i[4486,4499] [2024-11-27 20:01:45,467 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473ba71e-9cd6-405e-b31a-2eee927a3e6e/sv-benchmarks/c/aws-c-common/aws_array_eq_harness-1.i[4546,4559] [2024-11-27 20:01:46,524 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:01:46,525 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:01:46,525 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:01:46,526 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:01:46,527 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:01:46,542 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:01:46,543 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:01:46,546 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:01:46,547 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:01:47,477 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:01:47,478 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:01:47,547 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:01:47,602 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:01:47,615 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473ba71e-9cd6-405e-b31a-2eee927a3e6e/sv-benchmarks/c/aws-c-common/aws_array_eq_harness-1.i[4486,4499] [2024-11-27 20:01:47,616 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473ba71e-9cd6-405e-b31a-2eee927a3e6e/sv-benchmarks/c/aws-c-common/aws_array_eq_harness-1.i[4546,4559] [2024-11-27 20:01:47,657 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:01:47,657 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:01:47,658 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:01:47,658 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:01:47,659 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:01:47,666 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:01:47,666 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:01:47,667 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:01:47,668 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:01:47,834 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8277] [2024-11-27 20:01:47,835 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:01:47,836 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:01:47,853 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8763-8774] [2024-11-27 20:01:47,878 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:01:48,196 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:01:48,197 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:01:48 WrapperNode [2024-11-27 20:01:48,197 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:01:48,198 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:01:48,198 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:01:48,198 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:01:48,205 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:01:48" (1/1) ... [2024-11-27 20:01:48,312 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:01:48" (1/1) ... [2024-11-27 20:01:48,418 INFO L138 Inliner]: procedures = 680, calls = 2610, calls flagged for inlining = 59, calls inlined = 5, statements flattened = 791 [2024-11-27 20:01:48,418 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:01:48,419 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:01:48,419 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:01:48,419 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:01:48,429 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:01:48" (1/1) ... [2024-11-27 20:01:48,430 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:01:48" (1/1) ... [2024-11-27 20:01:48,436 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:01:48" (1/1) ... [2024-11-27 20:01:48,502 INFO L175 MemorySlicer]: Split 512 memory accesses to 6 slices as follows [2, 257, 238, 6, 4, 5]. 50 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 0, 6, 0, 0, 5]. The 491 writes are split as follows [0, 257, 232, 2, 0, 0]. [2024-11-27 20:01:48,503 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:01:48" (1/1) ... [2024-11-27 20:01:48,503 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:01:48" (1/1) ... [2024-11-27 20:01:48,563 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:01:48" (1/1) ... [2024-11-27 20:01:48,569 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:01:48" (1/1) ... [2024-11-27 20:01:48,576 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:01:48" (1/1) ... [2024-11-27 20:01:48,591 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:01:48" (1/1) ... [2024-11-27 20:01:48,600 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:01:48" (1/1) ... [2024-11-27 20:01:48,615 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:01:48,618 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:01:48,618 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:01:48,618 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:01:48,620 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:01:48" (1/1) ... [2024-11-27 20:01:48,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:01:48,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473ba71e-9cd6-405e-b31a-2eee927a3e6e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:01:48,662 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473ba71e-9cd6-405e-b31a-2eee927a3e6e/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:01:48,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473ba71e-9cd6-405e-b31a-2eee927a3e6e/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:01:48,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-27 20:01:48,693 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-27 20:01:48,693 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-27 20:01:48,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-27 20:01:48,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-27 20:01:48,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-27 20:01:48,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-27 20:01:48,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-27 20:01:48,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-27 20:01:48,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-27 20:01:48,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-27 20:01:48,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-27 20:01:48,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-27 20:01:48,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-27 20:01:48,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-27 20:01:48,696 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-27 20:01:48,696 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-27 20:01:48,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-27 20:01:48,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:01:48,696 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2024-11-27 20:01:48,696 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2024-11-27 20:01:48,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:01:48,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:01:48,696 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-27 20:01:48,696 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-27 20:01:48,696 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2024-11-27 20:01:48,696 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2024-11-27 20:01:48,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-27 20:01:48,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-27 20:01:48,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-27 20:01:48,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-27 20:01:48,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-27 20:01:48,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-11-27 20:01:48,697 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2024-11-27 20:01:48,697 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2024-11-27 20:01:48,697 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-27 20:01:48,697 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-27 20:01:48,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-27 20:01:48,697 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq [2024-11-27 20:01:48,697 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq [2024-11-27 20:01:48,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-27 20:01:48,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-27 20:01:48,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-27 20:01:48,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-27 20:01:48,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-27 20:01:48,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-27 20:01:48,698 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-27 20:01:48,698 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-27 20:01:48,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-27 20:01:48,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-27 20:01:48,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-27 20:01:48,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-27 20:01:48,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-27 20:01:48,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-27 20:01:48,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:01:48,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-27 20:01:48,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-27 20:01:48,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-27 20:01:48,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-27 20:01:48,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-27 20:01:49,065 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:01:49,067 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:01:58,069 INFO L? ?]: Removed 57 outVars from TransFormulas that were not future-live. [2024-11-27 20:01:58,069 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:01:58,085 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:01:58,087 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-27 20:01:58,088 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:01:58 BoogieIcfgContainer [2024-11-27 20:01:58,088 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:01:58,090 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:01:58,091 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:01:58,096 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:01:58,097 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:01:45" (1/3) ... [2024-11-27 20:01:58,097 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5584fd08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:01:58, skipping insertion in model container [2024-11-27 20:01:58,098 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:01:48" (2/3) ... [2024-11-27 20:01:58,098 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5584fd08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:01:58, skipping insertion in model container [2024-11-27 20:01:58,098 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:01:58" (3/3) ... [2024-11-27 20:01:58,099 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_array_eq_harness-1.i [2024-11-27 20:01:58,116 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:01:58,117 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_array_eq_harness-1.i that has 10 procedures, 87 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-27 20:01:58,174 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:01:58,186 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;@1b20584c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:01:58,186 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 20:01:58,191 INFO L276 IsEmpty]: Start isEmpty. Operand has 87 states, 52 states have (on average 1.2692307692307692) internal successors, (66), 55 states have internal predecessors, (66), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-27 20:01:58,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-27 20:01:58,202 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:01:58,203 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2024-11-27 20:01:58,204 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:01:58,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:01:58,209 INFO L85 PathProgramCache]: Analyzing trace with hash 873465649, now seen corresponding path program 1 times [2024-11-27 20:01:58,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:01:58,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175930525] [2024-11-27 20:01:58,216 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:01:58,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:03:24,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:03:25,915 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-27 20:03:25,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:03:25,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175930525] [2024-11-27 20:03:25,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175930525] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:03:25,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303126251] [2024-11-27 20:03:25,917 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:03:25,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:03:25,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473ba71e-9cd6-405e-b31a-2eee927a3e6e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:03:25,922 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473ba71e-9cd6-405e-b31a-2eee927a3e6e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:03:25,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473ba71e-9cd6-405e-b31a-2eee927a3e6e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:04:54,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:04:54,783 INFO L256 TraceCheckSpWp]: Trace formula consists of 7528 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-27 20:04:54,797 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:04:54,812 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-27 20:04:54,813 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:04:54,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303126251] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:04:54,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:04:54,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-27 20:04:54,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524088070] [2024-11-27 20:04:54,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:04:54,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 20:04:54,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:04:54,844 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 20:04:54,845 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 20:04:54,849 INFO L87 Difference]: Start difference. First operand has 87 states, 52 states have (on average 1.2692307692307692) internal successors, (66), 55 states have internal predecessors, (66), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-27 20:04:54,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:04:54,891 INFO L93 Difference]: Finished difference Result 171 states and 245 transitions. [2024-11-27 20:04:54,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 20:04:54,894 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 65 [2024-11-27 20:04:54,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:04:54,903 INFO L225 Difference]: With dead ends: 171 [2024-11-27 20:04:54,903 INFO L226 Difference]: Without dead ends: 82 [2024-11-27 20:04:54,907 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 20:04:54,910 INFO L435 NwaCegarLoop]: 112 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, 112 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 [2024-11-27 20:04:54,910 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:04:54,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-27 20:04:54,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2024-11-27 20:04:54,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 48 states have (on average 1.2291666666666667) internal successors, (59), 50 states have internal predecessors, (59), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-27 20:04:54,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 106 transitions. [2024-11-27 20:04:54,951 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 106 transitions. Word has length 65 [2024-11-27 20:04:54,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:04:54,951 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 106 transitions. [2024-11-27 20:04:54,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-27 20:04:54,952 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 106 transitions. [2024-11-27 20:04:54,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-27 20:04:54,954 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:04:54,954 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2024-11-27 20:04:54,980 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473ba71e-9cd6-405e-b31a-2eee927a3e6e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 20:04:55,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473ba71e-9cd6-405e-b31a-2eee927a3e6e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:04:55,155 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:04:55,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:04:55,156 INFO L85 PathProgramCache]: Analyzing trace with hash 200125107, now seen corresponding path program 1 times [2024-11-27 20:04:55,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:04:55,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629688192] [2024-11-27 20:04:55,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:04:55,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:06:22,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:25,721 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-27 20:06:25,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:06:25,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629688192] [2024-11-27 20:06:25,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629688192] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:06:25,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:06:25,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:06:25,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230062818] [2024-11-27 20:06:25,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:06:25,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:06:25,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:06:25,725 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:06:25,725 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:06:25,725 INFO L87 Difference]: Start difference. First operand 82 states and 106 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2024-11-27 20:06:25,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:06:25,821 INFO L93 Difference]: Finished difference Result 119 states and 151 transitions. [2024-11-27 20:06:25,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:06:25,822 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 65 [2024-11-27 20:06:25,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:06:25,824 INFO L225 Difference]: With dead ends: 119 [2024-11-27 20:06:25,824 INFO L226 Difference]: Without dead ends: 85 [2024-11-27 20:06:25,825 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:06:25,825 INFO L435 NwaCegarLoop]: 105 mSDtfsCounter, 0 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:06:25,826 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 310 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:06:25,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-27 20:06:25,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2024-11-27 20:06:25,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 50 states have (on average 1.22) internal successors, (61), 52 states have internal predecessors, (61), 24 states have call successors, (24), 9 states have call predecessors, (24), 10 states have return successors, (24), 24 states have call predecessors, (24), 23 states have call successors, (24) [2024-11-27 20:06:25,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 109 transitions. [2024-11-27 20:06:25,843 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 109 transitions. Word has length 65 [2024-11-27 20:06:25,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:06:25,847 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 109 transitions. [2024-11-27 20:06:25,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2024-11-27 20:06:25,847 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 109 transitions. [2024-11-27 20:06:25,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-27 20:06:25,849 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:06:25,849 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2024-11-27 20:06:25,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 20:06:25,849 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:06:25,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:25,852 INFO L85 PathProgramCache]: Analyzing trace with hash 398335985, now seen corresponding path program 1 times [2024-11-27 20:06:25,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:06:25,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038569747] [2024-11-27 20:06:25,854 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:25,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:08:06,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:08:20,615 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-27 20:08:20,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:08:20,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038569747] [2024-11-27 20:08:20,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038569747] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:08:20,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254984473] [2024-11-27 20:08:20,618 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:08:20,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:08:20,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473ba71e-9cd6-405e-b31a-2eee927a3e6e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:08:20,623 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473ba71e-9cd6-405e-b31a-2eee927a3e6e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:08:20,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473ba71e-9cd6-405e-b31a-2eee927a3e6e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 20:10:15,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:15,094 INFO L256 TraceCheckSpWp]: Trace formula consists of 7531 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-27 20:10:15,110 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:10:18,319 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-27 20:10:18,319 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:10:21,885 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-27 20:10:21,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254984473] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:10:21,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:10:21,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 14] total 24 [2024-11-27 20:10:21,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110205042] [2024-11-27 20:10:21,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:10:21,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-27 20:10:21,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:10:21,887 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-27 20:10:21,888 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=490, Unknown=0, NotChecked=0, Total=552 [2024-11-27 20:10:21,888 INFO L87 Difference]: Start difference. First operand 85 states and 109 transitions. Second operand has 24 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 18 states have internal predecessors, (44), 8 states have call successors, (20), 3 states have call predecessors, (20), 5 states have return successors, (19), 11 states have call predecessors, (19), 8 states have call successors, (19) [2024-11-27 20:10:26,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:10:26,569 INFO L93 Difference]: Finished difference Result 180 states and 254 transitions. [2024-11-27 20:10:26,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-27 20:10:26,570 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 18 states have internal predecessors, (44), 8 states have call successors, (20), 3 states have call predecessors, (20), 5 states have return successors, (19), 11 states have call predecessors, (19), 8 states have call successors, (19) Word has length 66 [2024-11-27 20:10:26,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:10:26,575 INFO L225 Difference]: With dead ends: 180 [2024-11-27 20:10:26,575 INFO L226 Difference]: Without dead ends: 148 [2024-11-27 20:10:26,577 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=107, Invalid=705, Unknown=0, NotChecked=0, Total=812 [2024-11-27 20:10:26,578 INFO L435 NwaCegarLoop]: 87 mSDtfsCounter, 46 mSDsluCounter, 1202 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 1289 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:10:26,579 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 1289 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-27 20:10:26,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-11-27 20:10:26,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 131. [2024-11-27 20:10:26,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 72 states have (on average 1.2083333333333333) internal successors, (87), 75 states have internal predecessors, (87), 45 states have call successors, (45), 10 states have call predecessors, (45), 13 states have return successors, (55), 46 states have call predecessors, (55), 44 states have call successors, (55) [2024-11-27 20:10:26,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 187 transitions. [2024-11-27 20:10:26,673 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 187 transitions. Word has length 66 [2024-11-27 20:10:26,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:10:26,674 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 187 transitions. [2024-11-27 20:10:26,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 18 states have internal predecessors, (44), 8 states have call successors, (20), 3 states have call predecessors, (20), 5 states have return successors, (19), 11 states have call predecessors, (19), 8 states have call successors, (19) [2024-11-27 20:10:26,674 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 187 transitions. [2024-11-27 20:10:26,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-27 20:10:26,693 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:10:26,694 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2024-11-27 20:10:26,738 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473ba71e-9cd6-405e-b31a-2eee927a3e6e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 20:10:26,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473ba71e-9cd6-405e-b31a-2eee927a3e6e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:10:26,930 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:10:26,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:10:26,978 INFO L85 PathProgramCache]: Analyzing trace with hash -2111396007, now seen corresponding path program 1 times [2024-11-27 20:10:26,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:10:26,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690020293] [2024-11-27 20:10:26,979 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:26,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:12:07,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:12:12,306 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-27 20:12:12,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:12:12,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690020293] [2024-11-27 20:12:12,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690020293] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:12:12,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:12:12,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 20:12:12,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515719265] [2024-11-27 20:12:12,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:12:12,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 20:12:12,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:12:12,309 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 20:12:12,309 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:12:12,309 INFO L87 Difference]: Start difference. First operand 131 states and 187 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-27 20:12:12,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:12:12,762 INFO L93 Difference]: Finished difference Result 148 states and 204 transitions. [2024-11-27 20:12:12,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 20:12:12,763 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 70 [2024-11-27 20:12:12,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:12:12,766 INFO L225 Difference]: With dead ends: 148 [2024-11-27 20:12:12,766 INFO L226 Difference]: Without dead ends: 121 [2024-11-27 20:12:12,767 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:12:12,768 INFO L435 NwaCegarLoop]: 101 mSDtfsCounter, 15 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:12:12,768 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 608 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 20:12:12,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-11-27 20:12:12,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 119. [2024-11-27 20:12:12,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 67 states have (on average 1.1940298507462686) internal successors, (80), 69 states have internal predecessors, (80), 39 states have call successors, (39), 10 states have call predecessors, (39), 12 states have return successors, (44), 40 states have call predecessors, (44), 38 states have call successors, (44) [2024-11-27 20:12:12,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 163 transitions. [2024-11-27 20:12:12,800 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 163 transitions. Word has length 70 [2024-11-27 20:12:12,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:12:12,802 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 163 transitions. [2024-11-27 20:12:12,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-27 20:12:12,802 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 163 transitions. [2024-11-27 20:12:12,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-27 20:12:12,810 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:12:12,811 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 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] [2024-11-27 20:12:12,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 20:12:12,811 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:12:12,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:12:12,811 INFO L85 PathProgramCache]: Analyzing trace with hash 325970360, now seen corresponding path program 1 times [2024-11-27 20:12:12,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:12:12,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59258342] [2024-11-27 20:12:12,812 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:12:12,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:13:54,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:14:07,804 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-27 20:14:07,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:14:07,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59258342] [2024-11-27 20:14:07,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59258342] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:14:07,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129311333] [2024-11-27 20:14:07,805 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:14:07,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:14:07,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473ba71e-9cd6-405e-b31a-2eee927a3e6e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:14:07,808 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473ba71e-9cd6-405e-b31a-2eee927a3e6e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:14:07,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473ba71e-9cd6-405e-b31a-2eee927a3e6e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 20:15:52,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:52,367 INFO L256 TraceCheckSpWp]: Trace formula consists of 7570 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-27 20:15:52,376 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:15:55,819 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-27 20:15:55,819 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:15:59,518 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-27 20:15:59,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129311333] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:15:59,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:15:59,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 15] total 28 [2024-11-27 20:15:59,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833610997] [2024-11-27 20:15:59,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:15:59,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-27 20:15:59,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:15:59,522 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-27 20:15:59,523 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=681, Unknown=0, NotChecked=0, Total=756 [2024-11-27 20:15:59,523 INFO L87 Difference]: Start difference. First operand 119 states and 163 transitions. Second operand has 28 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 19 states have internal predecessors, (52), 8 states have call successors, (24), 3 states have call predecessors, (24), 6 states have return successors, (24), 13 states have call predecessors, (24), 8 states have call successors, (24) [2024-11-27 20:16:08,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:16:08,390 INFO L93 Difference]: Finished difference Result 203 states and 279 transitions. [2024-11-27 20:16:08,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-27 20:16:08,392 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 19 states have internal predecessors, (52), 8 states have call successors, (24), 3 states have call predecessors, (24), 6 states have return successors, (24), 13 states have call predecessors, (24), 8 states have call successors, (24) Word has length 82 [2024-11-27 20:16:08,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:16:08,395 INFO L225 Difference]: With dead ends: 203 [2024-11-27 20:16:08,395 INFO L226 Difference]: Without dead ends: 170 [2024-11-27 20:16:08,397 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=155, Invalid=1251, Unknown=0, NotChecked=0, Total=1406 [2024-11-27 20:16:08,398 INFO L435 NwaCegarLoop]: 98 mSDtfsCounter, 43 mSDsluCounter, 1687 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 1785 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2024-11-27 20:16:08,398 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 1785 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2024-11-27 20:16:08,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-11-27 20:16:08,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 147. [2024-11-27 20:16:08,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 82 states have (on average 1.1951219512195121) internal successors, (98), 85 states have internal predecessors, (98), 48 states have call successors, (48), 12 states have call predecessors, (48), 16 states have return successors, (58), 50 states have call predecessors, (58), 47 states have call successors, (58) [2024-11-27 20:16:08,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 204 transitions. [2024-11-27 20:16:08,445 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 204 transitions. Word has length 82 [2024-11-27 20:16:08,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:16:08,446 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 204 transitions. [2024-11-27 20:16:08,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 19 states have internal predecessors, (52), 8 states have call successors, (24), 3 states have call predecessors, (24), 6 states have return successors, (24), 13 states have call predecessors, (24), 8 states have call successors, (24) [2024-11-27 20:16:08,447 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 204 transitions. [2024-11-27 20:16:08,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-27 20:16:08,449 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:16:08,450 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 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] [2024-11-27 20:16:08,478 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473ba71e-9cd6-405e-b31a-2eee927a3e6e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-27 20:16:08,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473ba71e-9cd6-405e-b31a-2eee927a3e6e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:16:08,651 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:16:08,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:16:08,651 INFO L85 PathProgramCache]: Analyzing trace with hash -13017648, now seen corresponding path program 1 times [2024-11-27 20:16:08,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:16:08,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23823433] [2024-11-27 20:16:08,651 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:16:08,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms