./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2643e2f-2702-46a0-a740-fc42069ec122/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2643e2f-2702-46a0-a740-fc42069ec122/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2643e2f-2702-46a0-a740-fc42069ec122/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2643e2f-2702-46a0-a740-fc42069ec122/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2643e2f-2702-46a0-a740-fc42069ec122/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2643e2f-2702-46a0-a740-fc42069ec122/bin/uautomizer-verify-LYvppIcaGC --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 49bf9fd75d56d44e7e1e54aefea9fad1d2b78cb24b15e9eb5cce5de020ddf3d7 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 18:21:27,249 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 18:21:27,332 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2643e2f-2702-46a0-a740-fc42069ec122/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-23 18:21:27,338 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 18:21:27,339 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 18:21:27,363 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 18:21:27,363 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 18:21:27,364 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 18:21:27,364 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 18:21:27,364 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 18:21:27,364 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 18:21:27,365 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 18:21:27,365 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 18:21:27,365 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 18:21:27,365 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 18:21:27,365 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 18:21:27,365 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 18:21:27,366 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 18:21:27,366 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 18:21:27,366 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 18:21:27,366 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 18:21:27,366 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 18:21:27,366 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 18:21:27,366 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 18:21:27,366 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 18:21:27,366 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 18:21:27,367 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 18:21:27,367 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 18:21:27,367 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 18:21:27,367 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:21:27,367 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 18:21:27,367 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 18:21:27,367 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 18:21:27,367 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 18:21:27,367 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:21:27,368 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 18:21:27,368 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 18:21:27,368 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 18:21:27,368 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 18:21:27,369 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 18:21:27,369 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 18:21:27,369 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 18:21:27,369 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 18:21:27,369 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 18:21:27,369 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 18:21:27,369 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_c2643e2f-2702-46a0-a740-fc42069ec122/bin/uautomizer-verify-LYvppIcaGC 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 -> 49bf9fd75d56d44e7e1e54aefea9fad1d2b78cb24b15e9eb5cce5de020ddf3d7 [2024-11-23 18:21:27,635 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 18:21:27,643 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 18:21:27,646 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 18:21:27,647 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 18:21:27,648 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 18:21:27,649 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2643e2f-2702-46a0-a740-fc42069ec122/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness_negated.i [2024-11-23 18:21:30,689 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2643e2f-2702-46a0-a740-fc42069ec122/bin/uautomizer-verify-LYvppIcaGC/data/070f73f6e/4c2dab08c77c4d248fe1182d53bb48fe/FLAG775035ba6 [2024-11-23 18:21:31,396 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 18:21:31,398 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2643e2f-2702-46a0-a740-fc42069ec122/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness_negated.i [2024-11-23 18:21:31,443 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2643e2f-2702-46a0-a740-fc42069ec122/bin/uautomizer-verify-LYvppIcaGC/data/070f73f6e/4c2dab08c77c4d248fe1182d53bb48fe/FLAG775035ba6 [2024-11-23 18:21:31,466 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2643e2f-2702-46a0-a740-fc42069ec122/bin/uautomizer-verify-LYvppIcaGC/data/070f73f6e/4c2dab08c77c4d248fe1182d53bb48fe [2024-11-23 18:21:31,469 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 18:21:31,470 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 18:21:31,471 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 18:21:31,471 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 18:21:31,476 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 18:21:31,477 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:21:31" (1/1) ... [2024-11-23 18:21:31,478 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@384d7edd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:21:31, skipping insertion in model container [2024-11-23 18:21:31,478 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:21:31" (1/1) ... [2024-11-23 18:21:31,585 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 18:21:31,841 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_c2643e2f-2702-46a0-a740-fc42069ec122/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness_negated.i[4505,4518] [2024-11-23 18:21:31,848 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_c2643e2f-2702-46a0-a740-fc42069ec122/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness_negated.i[4565,4578] [2024-11-23 18:21:32,888 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:21:32,889 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:21:32,890 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:21:32,890 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:21:32,892 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:21:32,908 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:21:32,909 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:21:32,912 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:21:32,912 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:21:33,774 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:21:33,776 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:21:33,853 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:21:33,854 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:21:33,943 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 18:21:34,022 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 18:21:34,044 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_c2643e2f-2702-46a0-a740-fc42069ec122/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness_negated.i[4505,4518] [2024-11-23 18:21:34,045 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_c2643e2f-2702-46a0-a740-fc42069ec122/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness_negated.i[4565,4578] [2024-11-23 18:21:34,112 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:21:34,113 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:21:34,114 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:21:34,114 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:21:34,115 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:21:34,131 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:21:34,131 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:21:34,132 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:21:34,133 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:21:34,241 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:21:34,241 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:21:34,356 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8265] [2024-11-23 18:21:34,359 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:21:34,359 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:21:34,375 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8751-8762] [2024-11-23 18:21:34,406 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 18:21:34,717 INFO L204 MainTranslator]: Completed translation [2024-11-23 18:21:34,717 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:21:34 WrapperNode [2024-11-23 18:21:34,718 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 18:21:34,719 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 18:21:34,719 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 18:21:34,719 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 18:21:34,729 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:21:34" (1/1) ... [2024-11-23 18:21:34,842 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:21:34" (1/1) ... [2024-11-23 18:21:34,953 INFO L138 Inliner]: procedures = 680, calls = 2646, calls flagged for inlining = 63, calls inlined = 10, statements flattened = 971 [2024-11-23 18:21:34,954 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 18:21:34,954 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 18:21:34,954 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 18:21:34,955 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 18:21:34,965 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:21:34" (1/1) ... [2024-11-23 18:21:34,966 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:21:34" (1/1) ... [2024-11-23 18:21:34,975 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:21:34" (1/1) ... [2024-11-23 18:21:35,081 INFO L175 MemorySlicer]: Split 572 memory accesses to 9 slices as follows [257, 2, 238, 20, 9, 32, 4, 1, 9]. 45 percent of accesses are in the largest equivalence class. The 25 initializations are split as follows [0, 2, 6, 2, 4, 4, 2, 0, 5]. The 494 writes are split as follows [257, 0, 232, 1, 0, 3, 0, 0, 1]. [2024-11-23 18:21:35,085 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:21:34" (1/1) ... [2024-11-23 18:21:35,085 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:21:34" (1/1) ... [2024-11-23 18:21:35,151 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:21:34" (1/1) ... [2024-11-23 18:21:35,156 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:21:34" (1/1) ... [2024-11-23 18:21:35,160 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:21:34" (1/1) ... [2024-11-23 18:21:35,171 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:21:34" (1/1) ... [2024-11-23 18:21:35,175 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:21:34" (1/1) ... [2024-11-23 18:21:35,186 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 18:21:35,187 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 18:21:35,187 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 18:21:35,188 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 18:21:35,189 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:21:34" (1/1) ... [2024-11-23 18:21:35,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:21:35,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2643e2f-2702-46a0-a740-fc42069ec122/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:21:35,244 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2643e2f-2702-46a0-a740-fc42069ec122/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 18:21:35,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2643e2f-2702-46a0-a740-fc42069ec122/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 18:21:35,276 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2024-11-23 18:21:35,277 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2024-11-23 18:21:35,278 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2024-11-23 18:21:35,279 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2024-11-23 18:21:35,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-23 18:21:35,279 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-23 18:21:35,279 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-23 18:21:35,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-23 18:21:35,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-23 18:21:35,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-23 18:21:35,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-23 18:21:35,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-23 18:21:35,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-23 18:21:35,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2024-11-23 18:21:35,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2024-11-23 18:21:35,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#8 [2024-11-23 18:21:35,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-23 18:21:35,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-23 18:21:35,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-23 18:21:35,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-23 18:21:35,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-23 18:21:35,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-23 18:21:35,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-23 18:21:35,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-23 18:21:35,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-23 18:21:35,283 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2024-11-23 18:21:35,283 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2024-11-23 18:21:35,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-23 18:21:35,283 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-23 18:21:35,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-23 18:21:35,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 18:21:35,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-23 18:21:35,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-23 18:21:35,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-23 18:21:35,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-23 18:21:35,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-23 18:21:35,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-23 18:21:35,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-23 18:21:35,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-23 18:21:35,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2024-11-23 18:21:35,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 18:21:35,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 18:21:35,284 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-23 18:21:35,284 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-23 18:21:35,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-23 18:21:35,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-23 18:21:35,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-23 18:21:35,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-23 18:21:35,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-23 18:21:35,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-11-23 18:21:35,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2024-11-23 18:21:35,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2024-11-23 18:21:35,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#8 [2024-11-23 18:21:35,284 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-23 18:21:35,284 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-23 18:21:35,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-23 18:21:35,284 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2024-11-23 18:21:35,285 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2024-11-23 18:21:35,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-23 18:21:35,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-23 18:21:35,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-23 18:21:35,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-23 18:21:35,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-23 18:21:35,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-23 18:21:35,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-23 18:21:35,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-23 18:21:35,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-11-23 18:21:35,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-23 18:21:35,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-23 18:21:35,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-23 18:21:35,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-23 18:21:35,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-23 18:21:35,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-23 18:21:35,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-23 18:21:35,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2024-11-23 18:21:35,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2024-11-23 18:21:35,291 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-11-23 18:21:35,291 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-11-23 18:21:35,291 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2024-11-23 18:21:35,291 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2024-11-23 18:21:35,291 INFO L130 BoogieDeclarations]: Found specification of procedure assert_bytes_match [2024-11-23 18:21:35,291 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_bytes_match [2024-11-23 18:21:35,291 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-23 18:21:35,291 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-23 18:21:35,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-23 18:21:35,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-23 18:21:35,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-23 18:21:35,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-23 18:21:35,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-23 18:21:35,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-23 18:21:35,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-23 18:21:35,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-23 18:21:35,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-23 18:21:35,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 18:21:35,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 18:21:35,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-23 18:21:35,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-23 18:21:35,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-23 18:21:35,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-23 18:21:35,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-23 18:21:35,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-23 18:21:35,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-23 18:21:35,667 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 18:21:35,669 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 18:21:44,833 INFO L? ?]: Removed 115 outVars from TransFormulas that were not future-live. [2024-11-23 18:21:44,833 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 18:21:44,858 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 18:21:44,859 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-23 18:21:44,859 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:21:44 BoogieIcfgContainer [2024-11-23 18:21:44,859 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 18:21:44,864 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 18:21:44,864 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 18:21:44,870 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 18:21:44,871 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 06:21:31" (1/3) ... [2024-11-23 18:21:44,872 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ae52dfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:21:44, skipping insertion in model container [2024-11-23 18:21:44,873 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:21:34" (2/3) ... [2024-11-23 18:21:44,874 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ae52dfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:21:44, skipping insertion in model container [2024-11-23 18:21:44,874 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:21:44" (3/3) ... [2024-11-23 18:21:44,876 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_append_with_lookup_harness_negated.i [2024-11-23 18:21:44,894 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 18:21:44,896 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_byte_buf_append_with_lookup_harness_negated.i that has 13 procedures, 164 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-23 18:21:44,974 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 18:21:44,990 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;@47ad9af1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 18:21:44,993 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 18:21:44,999 INFO L276 IsEmpty]: Start isEmpty. Operand has 164 states, 106 states have (on average 1.2264150943396226) internal successors, (130), 107 states have internal predecessors, (130), 44 states have call successors, (44), 12 states have call predecessors, (44), 12 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-23 18:21:45,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-23 18:21:45,012 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:21:45,013 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:21:45,013 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:21:45,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:21:45,018 INFO L85 PathProgramCache]: Analyzing trace with hash -454301623, now seen corresponding path program 1 times [2024-11-23 18:21:45,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:21:45,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183909454] [2024-11-23 18:21:45,030 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:21:45,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:23:13,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:23:15,056 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-23 18:23:15,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:23:15,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183909454] [2024-11-23 18:23:15,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183909454] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:23:15,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961359847] [2024-11-23 18:23:15,058 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:23:15,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:23:15,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2643e2f-2702-46a0-a740-fc42069ec122/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:23:15,063 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2643e2f-2702-46a0-a740-fc42069ec122/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:23:15,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2643e2f-2702-46a0-a740-fc42069ec122/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 18:24:44,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:44,766 INFO L256 TraceCheckSpWp]: Trace formula consists of 7741 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-23 18:24:44,778 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:24:44,799 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-23 18:24:44,799 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:24:44,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961359847] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:24:44,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:24:44,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-23 18:24:44,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486853069] [2024-11-23 18:24:44,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:24:44,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 18:24:44,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:24:44,824 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 18:24:44,825 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 18:24:44,827 INFO L87 Difference]: Start difference. First operand has 164 states, 106 states have (on average 1.2264150943396226) internal successors, (130), 107 states have internal predecessors, (130), 44 states have call successors, (44), 12 states have call predecessors, (44), 12 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-23 18:24:44,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:24:44,868 INFO L93 Difference]: Finished difference Result 324 states and 457 transitions. [2024-11-23 18:24:44,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 18:24:44,870 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 106 [2024-11-23 18:24:44,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:24:44,878 INFO L225 Difference]: With dead ends: 324 [2024-11-23 18:24:44,879 INFO L226 Difference]: Without dead ends: 159 [2024-11-23 18:24:44,884 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 18:24:44,889 INFO L435 NwaCegarLoop]: 215 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, 215 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 [2024-11-23 18:24:44,890 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:24:44,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-11-23 18:24:44,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2024-11-23 18:24:44,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 102 states have (on average 1.2058823529411764) internal successors, (123), 103 states have internal predecessors, (123), 44 states have call successors, (44), 12 states have call predecessors, (44), 12 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-11-23 18:24:44,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 210 transitions. [2024-11-23 18:24:44,956 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 210 transitions. Word has length 106 [2024-11-23 18:24:44,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:24:44,956 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 210 transitions. [2024-11-23 18:24:44,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-23 18:24:44,956 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 210 transitions. [2024-11-23 18:24:44,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-23 18:24:44,960 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:24:44,960 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:24:44,980 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2643e2f-2702-46a0-a740-fc42069ec122/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 18:24:45,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2643e2f-2702-46a0-a740-fc42069ec122/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-23 18:24:45,161 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:24:45,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:24:45,162 INFO L85 PathProgramCache]: Analyzing trace with hash 889441429, now seen corresponding path program 1 times [2024-11-23 18:24:45,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:24:45,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307795082] [2024-11-23 18:24:45,162 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:45,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:26:12,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:26:15,644 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2024-11-23 18:26:15,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:26:15,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307795082] [2024-11-23 18:26:15,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307795082] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:26:15,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252489398] [2024-11-23 18:26:15,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:26:15,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:26:15,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2643e2f-2702-46a0-a740-fc42069ec122/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:26:15,650 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2643e2f-2702-46a0-a740-fc42069ec122/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:26:15,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2643e2f-2702-46a0-a740-fc42069ec122/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 18:27:43,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:27:43,450 INFO L256 TraceCheckSpWp]: Trace formula consists of 7741 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 18:27:43,459 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:27:44,263 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-23 18:27:44,263 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:27:44,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252489398] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:27:44,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:27:44,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2024-11-23 18:27:44,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004451933] [2024-11-23 18:27:44,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:27:44,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 18:27:44,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:27:44,269 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 18:27:44,270 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-23 18:27:44,270 INFO L87 Difference]: Start difference. First operand 159 states and 210 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-23 18:27:45,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:27:45,736 INFO L93 Difference]: Finished difference Result 304 states and 405 transitions. [2024-11-23 18:27:45,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 18:27:45,737 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 106 [2024-11-23 18:27:45,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:27:45,740 INFO L225 Difference]: With dead ends: 304 [2024-11-23 18:27:45,740 INFO L226 Difference]: Without dead ends: 162 [2024-11-23 18:27:45,742 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-23 18:27:45,742 INFO L435 NwaCegarLoop]: 162 mSDtfsCounter, 214 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-23 18:27:45,743 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 440 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-23 18:27:45,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-11-23 18:27:45,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2024-11-23 18:27:45,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 104 states have (on average 1.2019230769230769) internal successors, (125), 106 states have internal predecessors, (125), 44 states have call successors, (44), 12 states have call predecessors, (44), 13 states have return successors, (46), 43 states have call predecessors, (46), 43 states have call successors, (46) [2024-11-23 18:27:45,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 215 transitions. [2024-11-23 18:27:45,779 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 215 transitions. Word has length 106 [2024-11-23 18:27:45,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:27:45,780 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 215 transitions. [2024-11-23 18:27:45,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-23 18:27:45,780 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 215 transitions. [2024-11-23 18:27:45,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-23 18:27:45,782 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:27:45,782 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:27:45,810 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2643e2f-2702-46a0-a740-fc42069ec122/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-23 18:27:45,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2643e2f-2702-46a0-a740-fc42069ec122/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:27:45,989 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:27:45,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:27:45,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1173661480, now seen corresponding path program 1 times [2024-11-23 18:27:45,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:27:45,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116391373] [2024-11-23 18:27:45,990 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:27:45,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:29:15,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:29:17,393 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2024-11-23 18:29:17,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:29:17,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116391373] [2024-11-23 18:29:17,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116391373] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:29:17,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94112532] [2024-11-23 18:29:17,393 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:29:17,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:29:17,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2643e2f-2702-46a0-a740-fc42069ec122/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:29:17,401 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2643e2f-2702-46a0-a740-fc42069ec122/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:29:17,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2643e2f-2702-46a0-a740-fc42069ec122/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 18:30:55,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:30:55,633 INFO L256 TraceCheckSpWp]: Trace formula consists of 7755 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 18:30:55,640 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:30:55,686 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-23 18:30:55,686 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:30:55,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94112532] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:30:55,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:30:55,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-23 18:30:55,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064389082] [2024-11-23 18:30:55,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:30:55,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:30:55,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:30:55,689 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:30:55,689 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:30:55,689 INFO L87 Difference]: Start difference. First operand 162 states and 215 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-23 18:30:55,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:30:55,841 INFO L93 Difference]: Finished difference Result 310 states and 417 transitions. [2024-11-23 18:30:55,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 18:30:55,844 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 112 [2024-11-23 18:30:55,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:30:55,848 INFO L225 Difference]: With dead ends: 310 [2024-11-23 18:30:55,852 INFO L226 Difference]: Without dead ends: 165 [2024-11-23 18:30:55,854 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:30:55,855 INFO L435 NwaCegarLoop]: 207 mSDtfsCounter, 1 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:30:55,855 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 615 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:30:55,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-11-23 18:30:55,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 164. [2024-11-23 18:30:55,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 106 states have (on average 1.1981132075471699) internal successors, (127), 108 states have internal predecessors, (127), 44 states have call successors, (44), 12 states have call predecessors, (44), 13 states have return successors, (46), 43 states have call predecessors, (46), 43 states have call successors, (46) [2024-11-23 18:30:55,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 217 transitions. [2024-11-23 18:30:55,877 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 217 transitions. Word has length 112 [2024-11-23 18:30:55,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:30:55,877 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 217 transitions. [2024-11-23 18:30:55,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-23 18:30:55,878 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 217 transitions. [2024-11-23 18:30:55,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-23 18:30:55,880 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:30:55,880 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:30:55,915 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2643e2f-2702-46a0-a740-fc42069ec122/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-23 18:30:56,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2643e2f-2702-46a0-a740-fc42069ec122/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:30:56,081 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:30:56,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:30:56,082 INFO L85 PathProgramCache]: Analyzing trace with hash 31159014, now seen corresponding path program 1 times [2024-11-23 18:30:56,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:30:56,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512969472] [2024-11-23 18:30:56,082 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:30:56,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:32:29,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:32:31,685 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2024-11-23 18:32:31,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:32:31,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512969472] [2024-11-23 18:32:31,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512969472] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:32:31,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317636588] [2024-11-23 18:32:31,686 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:31,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:32:31,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2643e2f-2702-46a0-a740-fc42069ec122/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:32:31,690 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2643e2f-2702-46a0-a740-fc42069ec122/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:32:31,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2643e2f-2702-46a0-a740-fc42069ec122/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 18:34:10,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:34:10,188 INFO L256 TraceCheckSpWp]: Trace formula consists of 7750 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 18:34:10,197 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:34:10,239 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-23 18:34:10,239 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:34:10,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317636588] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:34:10,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:34:10,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-23 18:34:10,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991014879] [2024-11-23 18:34:10,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:34:10,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:34:10,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:34:10,242 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:34:10,242 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:34:10,242 INFO L87 Difference]: Start difference. First operand 164 states and 217 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-23 18:34:10,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:34:10,363 INFO L93 Difference]: Finished difference Result 313 states and 420 transitions. [2024-11-23 18:34:10,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 18:34:10,366 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 112 [2024-11-23 18:34:10,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:34:10,368 INFO L225 Difference]: With dead ends: 313 [2024-11-23 18:34:10,369 INFO L226 Difference]: Without dead ends: 166 [2024-11-23 18:34:10,371 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:34:10,373 INFO L435 NwaCegarLoop]: 208 mSDtfsCounter, 0 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:34:10,375 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 616 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:34:10,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-11-23 18:34:10,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2024-11-23 18:34:10,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 108 states have (on average 1.1944444444444444) internal successors, (129), 110 states have internal predecessors, (129), 44 states have call successors, (44), 12 states have call predecessors, (44), 13 states have return successors, (46), 43 states have call predecessors, (46), 43 states have call successors, (46) [2024-11-23 18:34:10,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 219 transitions. [2024-11-23 18:34:10,413 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 219 transitions. Word has length 112 [2024-11-23 18:34:10,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:34:10,414 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 219 transitions. [2024-11-23 18:34:10,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-23 18:34:10,414 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 219 transitions. [2024-11-23 18:34:10,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-23 18:34:10,419 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:34:10,419 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:34:10,451 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2643e2f-2702-46a0-a740-fc42069ec122/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-23 18:34:10,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2643e2f-2702-46a0-a740-fc42069ec122/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:34:10,620 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:34:10,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:34:10,620 INFO L85 PathProgramCache]: Analyzing trace with hash -393096470, now seen corresponding path program 1 times [2024-11-23 18:34:10,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:34:10,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578719845] [2024-11-23 18:34:10,620 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:34:10,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:35:42,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:35:44,937 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2024-11-23 18:35:44,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:35:44,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578719845] [2024-11-23 18:35:44,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578719845] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:35:44,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848071115] [2024-11-23 18:35:44,938 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:35:44,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:35:44,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2643e2f-2702-46a0-a740-fc42069ec122/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:35:44,941 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2643e2f-2702-46a0-a740-fc42069ec122/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:35:44,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2643e2f-2702-46a0-a740-fc42069ec122/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process