./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.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_a02fe0f2-5237-4bcd-b67a-6d5d7c7e7225/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02fe0f2-5237-4bcd-b67a-6d5d7c7e7225/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02fe0f2-5237-4bcd-b67a-6d5d7c7e7225/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02fe0f2-5237-4bcd-b67a-6d5d7c7e7225/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02fe0f2-5237-4bcd-b67a-6d5d7c7e7225/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02fe0f2-5237-4bcd-b67a-6d5d7c7e7225/bin/uautomizer-verify-84ZbGMXZE1 --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 caa9ea3c4b01be424b9d4542ff8acdcb39307db8022d65ba85a629a6a4ef591a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 11:35:38,166 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 11:35:38,217 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02fe0f2-5237-4bcd-b67a-6d5d7c7e7225/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-12-02 11:35:38,222 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 11:35:38,222 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 11:35:38,242 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 11:35:38,243 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 11:35:38,243 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 11:35:38,243 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 11:35:38,243 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 11:35:38,243 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 11:35:38,244 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 11:35:38,244 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 11:35:38,244 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 11:35:38,244 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 11:35:38,244 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 11:35:38,244 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 11:35:38,244 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 11:35:38,245 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 11:35:38,245 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 11:35:38,245 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 11:35:38,245 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 11:35:38,245 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 11:35:38,245 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 11:35:38,245 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 11:35:38,245 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 11:35:38,245 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 11:35:38,245 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 11:35:38,245 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 11:35:38,246 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:35:38,246 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 11:35:38,246 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 11:35:38,246 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 11:35:38,246 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 11:35:38,246 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:35:38,246 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 11:35:38,246 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 11:35:38,246 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 11:35:38,247 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 11:35:38,247 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 11:35:38,247 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 11:35:38,247 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 11:35:38,247 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 11:35:38,247 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 11:35:38,247 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 11:35:38,247 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_a02fe0f2-5237-4bcd-b67a-6d5d7c7e7225/bin/uautomizer-verify-84ZbGMXZE1 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 -> caa9ea3c4b01be424b9d4542ff8acdcb39307db8022d65ba85a629a6a4ef591a [2024-12-02 11:35:38,445 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 11:35:38,453 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 11:35:38,455 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 11:35:38,456 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 11:35:38,456 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 11:35:38,458 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02fe0f2-5237-4bcd-b67a-6d5d7c7e7225/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i [2024-12-02 11:35:41,082 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02fe0f2-5237-4bcd-b67a-6d5d7c7e7225/bin/uautomizer-verify-84ZbGMXZE1/data/cc92f6896/74e979e1f7c94e3bbee49d024c1a1982/FLAGbd41dac24 [2024-12-02 11:35:41,471 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 11:35:41,471 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02fe0f2-5237-4bcd-b67a-6d5d7c7e7225/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i [2024-12-02 11:35:41,495 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02fe0f2-5237-4bcd-b67a-6d5d7c7e7225/bin/uautomizer-verify-84ZbGMXZE1/data/cc92f6896/74e979e1f7c94e3bbee49d024c1a1982/FLAGbd41dac24 [2024-12-02 11:35:41,507 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02fe0f2-5237-4bcd-b67a-6d5d7c7e7225/bin/uautomizer-verify-84ZbGMXZE1/data/cc92f6896/74e979e1f7c94e3bbee49d024c1a1982 [2024-12-02 11:35:41,509 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 11:35:41,510 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 11:35:41,511 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 11:35:41,511 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 11:35:41,514 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 11:35:41,515 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:35:41" (1/1) ... [2024-12-02 11:35:41,515 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3146adb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:35:41, skipping insertion in model container [2024-12-02 11:35:41,515 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:35:41" (1/1) ... [2024-12-02 11:35:41,583 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 11:35:41,766 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_a02fe0f2-5237-4bcd-b67a-6d5d7c7e7225/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i[4499,4512] [2024-12-02 11:35:41,772 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_a02fe0f2-5237-4bcd-b67a-6d5d7c7e7225/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i[4559,4572] [2024-12-02 11:35:42,509 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:35:42,510 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:35:42,510 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:35:42,511 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:35:42,512 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:35:42,526 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:35:42,526 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:35:42,528 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:35:42,529 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:35:43,150 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:35:43,151 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:35:43,237 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 11:35:43,285 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 11:35:43,297 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_a02fe0f2-5237-4bcd-b67a-6d5d7c7e7225/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i[4499,4512] [2024-12-02 11:35:43,298 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_a02fe0f2-5237-4bcd-b67a-6d5d7c7e7225/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i[4559,4572] [2024-12-02 11:35:43,334 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:35:43,334 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:35:43,335 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:35:43,335 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:35:43,336 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:35:43,342 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:35:43,342 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:35:43,343 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:35:43,343 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:35:43,454 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8253] [2024-12-02 11:35:43,456 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:35:43,456 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:35:43,470 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8739-8750] [2024-12-02 11:35:43,528 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 11:35:43,699 INFO L204 MainTranslator]: Completed translation [2024-12-02 11:35:43,699 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:35:43 WrapperNode [2024-12-02 11:35:43,699 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 11:35:43,700 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 11:35:43,700 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 11:35:43,700 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 11:35:43,704 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:35:43" (1/1) ... [2024-12-02 11:35:43,763 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:35:43" (1/1) ... [2024-12-02 11:35:43,821 INFO L138 Inliner]: procedures = 682, calls = 2795, calls flagged for inlining = 60, calls inlined = 7, statements flattened = 879 [2024-12-02 11:35:43,822 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 11:35:43,822 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 11:35:43,822 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 11:35:43,822 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 11:35:43,832 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:35:43" (1/1) ... [2024-12-02 11:35:43,833 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:35:43" (1/1) ... [2024-12-02 11:35:43,839 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:35:43" (1/1) ... [2024-12-02 11:35:43,890 INFO L175 MemorySlicer]: Split 543 memory accesses to 7 slices as follows [2, 257, 238, 12, 16, 13, 5]. 47 percent of accesses are in the largest equivalence class. The 31 initializations are split as follows [2, 0, 6, 0, 16, 2, 5]. The 493 writes are split as follows [0, 257, 232, 3, 0, 1, 0]. [2024-12-02 11:35:43,890 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:35:43" (1/1) ... [2024-12-02 11:35:43,890 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:35:43" (1/1) ... [2024-12-02 11:35:43,919 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:35:43" (1/1) ... [2024-12-02 11:35:43,922 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:35:43" (1/1) ... [2024-12-02 11:35:43,925 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:35:43" (1/1) ... [2024-12-02 11:35:43,933 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:35:43" (1/1) ... [2024-12-02 11:35:43,937 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:35:43" (1/1) ... [2024-12-02 11:35:43,947 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 11:35:43,948 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 11:35:43,948 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 11:35:43,948 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 11:35:43,949 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:35:43" (1/1) ... [2024-12-02 11:35:43,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:35:43,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02fe0f2-5237-4bcd-b67a-6d5d7c7e7225/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:35:43,973 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02fe0f2-5237-4bcd-b67a-6d5d7c7e7225/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 11:35:43,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02fe0f2-5237-4bcd-b67a-6d5d7c7e7225/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 11:35:43,996 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2024-12-02 11:35:43,996 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2024-12-02 11:35:43,996 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2024-12-02 11:35:43,996 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2024-12-02 11:35:43,997 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_string_is_allocated_bounded_length [2024-12-02 11:35:43,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_string_is_allocated_bounded_length [2024-12-02 11:35:43,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 11:35:43,997 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-12-02 11:35:43,997 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-12-02 11:35:43,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-12-02 11:35:43,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-12-02 11:35:43,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-12-02 11:35:43,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-12-02 11:35:43,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-12-02 11:35:43,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-12-02 11:35:43,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2024-12-02 11:35:43,997 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 11:35:43,997 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 11:35:43,997 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-12-02 11:35:43,997 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-12-02 11:35:43,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-12-02 11:35:43,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-12-02 11:35:43,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-12-02 11:35:43,998 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-12-02 11:35:43,998 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-12-02 11:35:43,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 11:35:43,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 11:35:43,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-12-02 11:35:43,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-12-02 11:35:43,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-12-02 11:35:43,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-12-02 11:35:43,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-12-02 11:35:43,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-12-02 11:35:43,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-12-02 11:35:43,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 11:35:43,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 11:35:43,998 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-12-02 11:35:43,999 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-12-02 11:35:43,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-12-02 11:35:43,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-12-02 11:35:43,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-12-02 11:35:43,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-12-02 11:35:43,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-12-02 11:35:43,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-12-02 11:35:43,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2024-12-02 11:35:43,999 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 11:35:43,999 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 11:35:43,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-02 11:35:43,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-12-02 11:35:43,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-12-02 11:35:43,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-12-02 11:35:43,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-12-02 11:35:43,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-12-02 11:35:43,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-12-02 11:35:43,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-12-02 11:35:44,000 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq [2024-12-02 11:35:44,000 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq [2024-12-02 11:35:44,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-12-02 11:35:44,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-12-02 11:35:44,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-12-02 11:35:44,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-12-02 11:35:44,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-12-02 11:35:44,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-12-02 11:35:44,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-12-02 11:35:44,000 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-12-02 11:35:44,000 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-12-02 11:35:44,000 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-12-02 11:35:44,000 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-12-02 11:35:44,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 11:35:44,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 11:35:44,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-12-02 11:35:44,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-12-02 11:35:44,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-12-02 11:35:44,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-12-02 11:35:44,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-12-02 11:35:44,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 11:35:44,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 11:35:44,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 11:35:44,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 11:35:44,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-02 11:35:44,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-12-02 11:35:44,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-12-02 11:35:44,251 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 11:35:44,252 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 11:35:51,697 INFO L? ?]: Removed 99 outVars from TransFormulas that were not future-live. [2024-12-02 11:35:51,697 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 11:35:51,707 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 11:35:51,707 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-12-02 11:35:51,708 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:35:51 BoogieIcfgContainer [2024-12-02 11:35:51,708 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 11:35:51,710 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 11:35:51,710 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 11:35:51,714 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 11:35:51,714 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 11:35:41" (1/3) ... [2024-12-02 11:35:51,715 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e773e74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:35:51, skipping insertion in model container [2024-12-02 11:35:51,715 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:35:43" (2/3) ... [2024-12-02 11:35:51,715 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e773e74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:35:51, skipping insertion in model container [2024-12-02 11:35:51,715 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:35:51" (3/3) ... [2024-12-02 11:35:51,716 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_string_eq_byte_cursor_harness.i [2024-12-02 11:35:51,731 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 11:35:51,734 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_string_eq_byte_cursor_harness.i that has 11 procedures, 123 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-12-02 11:35:51,786 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 11:35:51,796 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;@26077f4d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 11:35:51,797 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 11:35:51,800 INFO L276 IsEmpty]: Start isEmpty. Operand has 123 states, 82 states have (on average 1.2804878048780488) internal successors, (105), 83 states have internal predecessors, (105), 29 states have call successors, (29), 10 states have call predecessors, (29), 10 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-12-02 11:35:51,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-12-02 11:35:51,806 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:35:51,807 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2024-12-02 11:35:51,807 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:35:51,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:35:51,811 INFO L85 PathProgramCache]: Analyzing trace with hash 185201470, now seen corresponding path program 1 times [2024-12-02 11:35:51,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:35:51,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368799582] [2024-12-02 11:35:51,816 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:35:51,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:37:18,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:37:21,110 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-02 11:37:21,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:37:21,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368799582] [2024-12-02 11:37:21,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368799582] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:37:21,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844103999] [2024-12-02 11:37:21,112 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:37:21,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:37:21,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02fe0f2-5237-4bcd-b67a-6d5d7c7e7225/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:37:21,115 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02fe0f2-5237-4bcd-b67a-6d5d7c7e7225/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:37:21,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02fe0f2-5237-4bcd-b67a-6d5d7c7e7225/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 11:38:49,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:38:49,229 INFO L256 TraceCheckSpWp]: Trace formula consists of 7600 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 11:38:49,237 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:38:49,247 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-02 11:38:49,248 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:38:49,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844103999] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:38:49,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:38:49,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 5 [2024-12-02 11:38:49,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739612816] [2024-12-02 11:38:49,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:38:49,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 11:38:49,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:38:49,266 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 11:38:49,267 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:38:49,268 INFO L87 Difference]: Start difference. First operand has 123 states, 82 states have (on average 1.2804878048780488) internal successors, (105), 83 states have internal predecessors, (105), 29 states have call successors, (29), 10 states have call predecessors, (29), 10 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-12-02 11:38:49,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:38:49,293 INFO L93 Difference]: Finished difference Result 237 states and 329 transitions. [2024-12-02 11:38:49,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 11:38:49,295 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 59 [2024-12-02 11:38:49,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:38:49,301 INFO L225 Difference]: With dead ends: 237 [2024-12-02 11:38:49,301 INFO L226 Difference]: Without dead ends: 118 [2024-12-02 11:38:49,304 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:38:49,306 INFO L435 NwaCegarLoop]: 161 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, 161 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 [2024-12-02 11:38:49,306 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:38:49,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-12-02 11:38:49,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2024-12-02 11:38:49,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 78 states have (on average 1.2692307692307692) internal successors, (99), 79 states have internal predecessors, (99), 29 states have call successors, (29), 10 states have call predecessors, (29), 10 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-12-02 11:38:49,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 156 transitions. [2024-12-02 11:38:49,340 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 156 transitions. Word has length 59 [2024-12-02 11:38:49,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:38:49,341 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 156 transitions. [2024-12-02 11:38:49,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-12-02 11:38:49,341 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 156 transitions. [2024-12-02 11:38:49,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-12-02 11:38:49,343 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:38:49,343 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2024-12-02 11:38:49,361 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02fe0f2-5237-4bcd-b67a-6d5d7c7e7225/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 11:38:49,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02fe0f2-5237-4bcd-b67a-6d5d7c7e7225/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 11:38:49,544 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:38:49,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:38:49,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1931526724, now seen corresponding path program 1 times [2024-12-02 11:38:49,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:38:49,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321661852] [2024-12-02 11:38:49,545 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:38:49,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:40:14,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:40:16,280 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-02 11:40:16,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:40:16,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321661852] [2024-12-02 11:40:16,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321661852] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:40:16,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874040898] [2024-12-02 11:40:16,280 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:40:16,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:40:16,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02fe0f2-5237-4bcd-b67a-6d5d7c7e7225/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:40:16,283 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02fe0f2-5237-4bcd-b67a-6d5d7c7e7225/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:40:16,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02fe0f2-5237-4bcd-b67a-6d5d7c7e7225/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 11:41:42,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:41:42,447 INFO L256 TraceCheckSpWp]: Trace formula consists of 7600 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 11:41:42,452 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:41:43,066 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 11:41:43,066 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:41:43,940 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-02 11:41:43,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874040898] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:41:43,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:41:43,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 11 [2024-12-02 11:41:43,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863242849] [2024-12-02 11:41:43,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:41:43,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 11:41:43,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:41:43,942 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 11:41:43,942 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-12-02 11:41:43,942 INFO L87 Difference]: Start difference. First operand 118 states and 156 transitions. Second operand has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 7 states have call successors, (20), 3 states have call predecessors, (20), 5 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) [2024-12-02 11:41:45,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:41:45,146 INFO L93 Difference]: Finished difference Result 202 states and 269 transitions. [2024-12-02 11:41:45,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 11:41:45,147 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 7 states have call successors, (20), 3 states have call predecessors, (20), 5 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) Word has length 59 [2024-12-02 11:41:45,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:41:45,149 INFO L225 Difference]: With dead ends: 202 [2024-12-02 11:41:45,149 INFO L226 Difference]: Without dead ends: 121 [2024-12-02 11:41:45,149 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-12-02 11:41:45,150 INFO L435 NwaCegarLoop]: 131 mSDtfsCounter, 292 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:41:45,150 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 479 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 11:41:45,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-12-02 11:41:45,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2024-12-02 11:41:45,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 80 states have (on average 1.2625) internal successors, (101), 82 states have internal predecessors, (101), 29 states have call successors, (29), 10 states have call predecessors, (29), 11 states have return successors, (29), 28 states have call predecessors, (29), 28 states have call successors, (29) [2024-12-02 11:41:45,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 159 transitions. [2024-12-02 11:41:45,162 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 159 transitions. Word has length 59 [2024-12-02 11:41:45,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:41:45,162 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 159 transitions. [2024-12-02 11:41:45,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 7 states have call successors, (20), 3 states have call predecessors, (20), 5 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) [2024-12-02 11:41:45,162 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 159 transitions. [2024-12-02 11:41:45,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-12-02 11:41:45,164 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:41:45,164 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:41:45,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02fe0f2-5237-4bcd-b67a-6d5d7c7e7225/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-12-02 11:41:45,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02fe0f2-5237-4bcd-b67a-6d5d7c7e7225/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:41:45,365 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:41:45,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:41:45,365 INFO L85 PathProgramCache]: Analyzing trace with hash -697838905, now seen corresponding path program 1 times [2024-12-02 11:41:45,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:41:45,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456771621] [2024-12-02 11:41:45,366 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:41:45,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:43:08,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:43:10,130 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 11:43:10,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:43:10,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456771621] [2024-12-02 11:43:10,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456771621] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:43:10,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:43:10,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 11:43:10,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917122951] [2024-12-02 11:43:10,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:43:10,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:43:10,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:43:10,132 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:43:10,132 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:43:10,132 INFO L87 Difference]: Start difference. First operand 121 states and 159 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-12-02 11:43:10,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:43:10,260 INFO L93 Difference]: Finished difference Result 203 states and 270 transitions. [2024-12-02 11:43:10,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 11:43:10,260 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 63 [2024-12-02 11:43:10,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:43:10,261 INFO L225 Difference]: With dead ends: 203 [2024-12-02 11:43:10,261 INFO L226 Difference]: Without dead ends: 149 [2024-12-02 11:43:10,262 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 [2024-12-02 11:43:10,263 INFO L435 NwaCegarLoop]: 153 mSDtfsCounter, 10 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:43:10,263 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 451 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:43:10,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-12-02 11:43:10,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2024-12-02 11:43:10,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 98 states have (on average 1.2653061224489797) internal successors, (124), 100 states have internal predecessors, (124), 39 states have call successors, (39), 10 states have call predecessors, (39), 11 states have return successors, (40), 38 states have call predecessors, (40), 38 states have call successors, (40) [2024-12-02 11:43:10,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 203 transitions. [2024-12-02 11:43:10,278 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 203 transitions. Word has length 63 [2024-12-02 11:43:10,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:43:10,278 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 203 transitions. [2024-12-02 11:43:10,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-12-02 11:43:10,279 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 203 transitions. [2024-12-02 11:43:10,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-12-02 11:43:10,281 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:43:10,281 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2024-12-02 11:43:10,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 11:43:10,281 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:43:10,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:43:10,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1931975174, now seen corresponding path program 1 times [2024-12-02 11:43:10,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:43:10,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746082819] [2024-12-02 11:43:10,282 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:43:10,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:44:33,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:44:38,024 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-12-02 11:44:38,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:44:38,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746082819] [2024-12-02 11:44:38,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746082819] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:44:38,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:44:38,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 11:44:38,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816055525] [2024-12-02 11:44:38,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:44:38,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 11:44:38,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:44:38,026 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 11:44:38,026 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 11:44:38,027 INFO L87 Difference]: Start difference. First operand 149 states and 203 transitions. Second operand has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2024-12-02 11:44:38,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:44:38,396 INFO L93 Difference]: Finished difference Result 160 states and 217 transitions. [2024-12-02 11:44:38,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 11:44:38,397 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 63 [2024-12-02 11:44:38,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:44:38,398 INFO L225 Difference]: With dead ends: 160 [2024-12-02 11:44:38,398 INFO L226 Difference]: Without dead ends: 153 [2024-12-02 11:44:38,399 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-12-02 11:44:38,400 INFO L435 NwaCegarLoop]: 155 mSDtfsCounter, 3 mSDsluCounter, 913 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1068 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 11:44:38,400 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1068 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 11:44:38,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2024-12-02 11:44:38,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2024-12-02 11:44:38,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 101 states have (on average 1.2574257425742574) internal successors, (127), 104 states have internal predecessors, (127), 39 states have call successors, (39), 10 states have call predecessors, (39), 12 states have return successors, (44), 38 states have call predecessors, (44), 38 states have call successors, (44) [2024-12-02 11:44:38,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 210 transitions. [2024-12-02 11:44:38,416 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 210 transitions. Word has length 63 [2024-12-02 11:44:38,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:44:38,416 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 210 transitions. [2024-12-02 11:44:38,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2024-12-02 11:44:38,416 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 210 transitions. [2024-12-02 11:44:38,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-12-02 11:44:38,417 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:44:38,418 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2024-12-02 11:44:38,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 11:44:38,418 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:44:38,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:44:38,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1883549874, now seen corresponding path program 1 times [2024-12-02 11:44:38,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:44:38,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648674293] [2024-12-02 11:44:38,418 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:44:38,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:46:04,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:46:09,634 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-12-02 11:46:09,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:46:09,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648674293] [2024-12-02 11:46:09,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648674293] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:46:09,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154165061] [2024-12-02 11:46:09,635 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:46:09,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:46:09,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02fe0f2-5237-4bcd-b67a-6d5d7c7e7225/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:46:09,637 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02fe0f2-5237-4bcd-b67a-6d5d7c7e7225/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:46:09,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a02fe0f2-5237-4bcd-b67a-6d5d7c7e7225/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process