./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_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_26758402-b4fb-44a8-88ed-5e30dd5a9621/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26758402-b4fb-44a8-88ed-5e30dd5a9621/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_26758402-b4fb-44a8-88ed-5e30dd5a9621/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26758402-b4fb-44a8-88ed-5e30dd5a9621/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26758402-b4fb-44a8-88ed-5e30dd5a9621/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_26758402-b4fb-44a8-88ed-5e30dd5a9621/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 70fdf4888600bb48b8cb4af60c2a43959940f60808ef921b3b5f10a980e62d04 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:25:26,741 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:25:26,832 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26758402-b4fb-44a8-88ed-5e30dd5a9621/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-24 01:25:26,840 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:25:26,841 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:25:26,866 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:25:26,866 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:25:26,867 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:25:26,867 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:25:26,867 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:25:26,867 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:25:26,867 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:25:26,868 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:25:26,868 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:25:26,868 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:25:26,868 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:25:26,868 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 01:25:26,870 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 01:25:26,871 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:25:26,871 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 01:25:26,872 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:25:26,872 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 01:25:26,872 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 01:25:26,872 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:25:26,872 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:25:26,872 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:25:26,872 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:25:26,873 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:25:26,873 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:25:26,873 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:25:26,873 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:25:26,874 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:25:26,874 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:25:26,874 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:25:26,874 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:25:26,874 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:25:26,875 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:25:26,875 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 01:25:26,875 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 01:25:26,875 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 01:25:26,875 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 01:25:26,875 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:25:26,875 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:25:26,875 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:25:26,876 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:25:26,876 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_26758402-b4fb-44a8-88ed-5e30dd5a9621/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 -> 70fdf4888600bb48b8cb4af60c2a43959940f60808ef921b3b5f10a980e62d04 [2024-11-24 01:25:27,171 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:25:27,182 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:25:27,184 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:25:27,186 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:25:27,186 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:25:27,188 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26758402-b4fb-44a8-88ed-5e30dd5a9621/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness_negated.i [2024-11-24 01:25:30,366 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26758402-b4fb-44a8-88ed-5e30dd5a9621/bin/uautomizer-verify-LYvppIcaGC/data/487c055c3/060c726802d640f2bfc700ade89eb36a/FLAG33dfa7d75 [2024-11-24 01:25:30,949 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:25:30,953 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26758402-b4fb-44a8-88ed-5e30dd5a9621/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness_negated.i [2024-11-24 01:25:31,001 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26758402-b4fb-44a8-88ed-5e30dd5a9621/bin/uautomizer-verify-LYvppIcaGC/data/487c055c3/060c726802d640f2bfc700ade89eb36a/FLAG33dfa7d75 [2024-11-24 01:25:31,022 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26758402-b4fb-44a8-88ed-5e30dd5a9621/bin/uautomizer-verify-LYvppIcaGC/data/487c055c3/060c726802d640f2bfc700ade89eb36a [2024-11-24 01:25:31,024 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:25:31,026 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:25:31,029 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:25:31,029 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:25:31,033 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:25:31,036 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:25:31" (1/1) ... [2024-11-24 01:25:31,037 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@589e70c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:25:31, skipping insertion in model container [2024-11-24 01:25:31,037 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:25:31" (1/1) ... [2024-11-24 01:25:31,124 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:25:31,411 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_26758402-b4fb-44a8-88ed-5e30dd5a9621/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness_negated.i[4501,4514] [2024-11-24 01:25:31,421 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_26758402-b4fb-44a8-88ed-5e30dd5a9621/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness_negated.i[4561,4574] [2024-11-24 01:25:32,405 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:25:32,406 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:25:32,406 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:25:32,409 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:25:32,410 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:25:32,429 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:25:32,430 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:25:32,432 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:25:32,433 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:25:33,242 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:25:33,242 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:25:33,357 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:25:33,358 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:25:33,426 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:25:33,493 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:25:33,511 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_26758402-b4fb-44a8-88ed-5e30dd5a9621/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness_negated.i[4501,4514] [2024-11-24 01:25:33,512 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_26758402-b4fb-44a8-88ed-5e30dd5a9621/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness_negated.i[4561,4574] [2024-11-24 01:25:33,571 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:25:33,575 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:25:33,575 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:25:33,576 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:25:33,576 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:25:33,586 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:25:33,587 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:25:33,588 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:25:33,589 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:25:33,687 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:25:33,687 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:25:33,795 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8265] [2024-11-24 01:25:33,797 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:25:33,798 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:25:33,814 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8751-8762] [2024-11-24 01:25:33,845 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:25:34,120 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:25:34,120 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:25:34 WrapperNode [2024-11-24 01:25:34,121 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:25:34,122 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:25:34,122 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:25:34,122 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:25:34,132 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:25:34" (1/1) ... [2024-11-24 01:25:34,232 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:25:34" (1/1) ... [2024-11-24 01:25:34,318 INFO L138 Inliner]: procedures = 680, calls = 2637, calls flagged for inlining = 61, calls inlined = 11, statements flattened = 1079 [2024-11-24 01:25:34,319 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:25:34,320 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:25:34,320 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:25:34,320 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:25:34,336 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:25:34" (1/1) ... [2024-11-24 01:25:34,337 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:25:34" (1/1) ... [2024-11-24 01:25:34,350 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:25:34" (1/1) ... [2024-11-24 01:25:34,465 INFO L175 MemorySlicer]: Split 595 memory accesses to 9 slices as follows [2, 257, 238, 9, 4, 8, 25, 47, 5]. 43 percent of accesses are in the largest equivalence class. The 26 initializations are split as follows [2, 0, 6, 5, 2, 4, 2, 4, 1]. The 497 writes are split as follows [0, 257, 232, 1, 0, 0, 1, 5, 1]. [2024-11-24 01:25:34,465 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:25:34" (1/1) ... [2024-11-24 01:25:34,465 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:25:34" (1/1) ... [2024-11-24 01:25:34,528 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:25:34" (1/1) ... [2024-11-24 01:25:34,531 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:25:34" (1/1) ... [2024-11-24 01:25:34,538 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:25:34" (1/1) ... [2024-11-24 01:25:34,560 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:25:34" (1/1) ... [2024-11-24 01:25:34,568 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:25:34" (1/1) ... [2024-11-24 01:25:34,594 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:25:34,595 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:25:34,595 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:25:34,595 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:25:34,596 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:25:34" (1/1) ... [2024-11-24 01:25:34,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:25:34,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26758402-b4fb-44a8-88ed-5e30dd5a9621/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:25:34,630 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26758402-b4fb-44a8-88ed-5e30dd5a9621/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:25:34,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26758402-b4fb-44a8-88ed-5e30dd5a9621/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:25:34,661 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2024-11-24 01:25:34,662 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2024-11-24 01:25:34,663 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2024-11-24 01:25:34,663 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2024-11-24 01:25:34,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-24 01:25:34,664 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-24 01:25:34,664 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-24 01:25:34,664 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2024-11-24 01:25:34,664 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2024-11-24 01:25:34,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-24 01:25:34,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-24 01:25:34,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-24 01:25:34,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-24 01:25:34,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-24 01:25:34,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-24 01:25:34,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2024-11-24 01:25:34,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2024-11-24 01:25:34,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#8 [2024-11-24 01:25:34,665 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-24 01:25:34,665 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-24 01:25:34,665 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-24 01:25:34,665 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-24 01:25:34,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-24 01:25:34,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-24 01:25:34,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-24 01:25:34,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-24 01:25:34,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-24 01:25:34,667 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2024-11-24 01:25:34,667 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2024-11-24 01:25:34,667 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-24 01:25:34,668 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-24 01:25:34,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-24 01:25:34,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 01:25:34,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-24 01:25:34,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-24 01:25:34,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-24 01:25:34,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-24 01:25:34,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-24 01:25:34,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-24 01:25:34,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-24 01:25:34,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-24 01:25:34,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2024-11-24 01:25:34,669 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2024-11-24 01:25:34,669 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2024-11-24 01:25:34,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:25:34,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:25:34,670 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-24 01:25:34,670 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-24 01:25:34,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-24 01:25:34,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-24 01:25:34,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-24 01:25:34,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-24 01:25:34,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-24 01:25:34,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-11-24 01:25:34,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2024-11-24 01:25:34,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2024-11-24 01:25:34,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#8 [2024-11-24 01:25:34,670 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2024-11-24 01:25:34,670 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2024-11-24 01:25:34,670 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2024-11-24 01:25:34,670 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2024-11-24 01:25:34,670 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-24 01:25:34,670 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-24 01:25:34,671 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2024-11-24 01:25:34,671 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2024-11-24 01:25:34,671 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2024-11-24 01:25:34,671 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2024-11-24 01:25:34,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-24 01:25:34,671 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2024-11-24 01:25:34,671 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2024-11-24 01:25:34,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-24 01:25:34,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-24 01:25:34,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-24 01:25:34,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-24 01:25:34,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-24 01:25:34,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-24 01:25:34,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-24 01:25:34,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-24 01:25:34,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-11-24 01:25:34,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-24 01:25:34,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-24 01:25:34,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-24 01:25:34,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-24 01:25:34,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-24 01:25:34,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-24 01:25:34,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-24 01:25:34,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2024-11-24 01:25:34,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2024-11-24 01:25:34,672 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-11-24 01:25:34,672 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-11-24 01:25:34,672 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2024-11-24 01:25:34,672 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2024-11-24 01:25:34,672 INFO L130 BoogieDeclarations]: Found specification of procedure assert_bytes_match [2024-11-24 01:25:34,672 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_bytes_match [2024-11-24 01:25:34,672 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-24 01:25:34,672 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-24 01:25:34,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-24 01:25:34,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-24 01:25:34,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-24 01:25:34,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-24 01:25:34,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-24 01:25:34,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-24 01:25:34,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-24 01:25:34,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-24 01:25:34,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-24 01:25:34,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 01:25:34,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-24 01:25:34,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-24 01:25:34,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-24 01:25:34,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-24 01:25:34,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-24 01:25:34,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-24 01:25:34,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-24 01:25:34,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-24 01:25:35,084 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:25:35,086 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:25:44,391 INFO L? ?]: Removed 141 outVars from TransFormulas that were not future-live. [2024-11-24 01:25:44,392 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:25:44,412 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:25:44,415 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-24 01:25:44,415 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:25:44 BoogieIcfgContainer [2024-11-24 01:25:44,416 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:25:44,418 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 01:25:44,418 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 01:25:44,426 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 01:25:44,426 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:25:31" (1/3) ... [2024-11-24 01:25:44,427 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78f06a64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:25:44, skipping insertion in model container [2024-11-24 01:25:44,429 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:25:34" (2/3) ... [2024-11-24 01:25:44,429 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78f06a64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:25:44, skipping insertion in model container [2024-11-24 01:25:44,429 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:25:44" (3/3) ... [2024-11-24 01:25:44,431 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_append_dynamic_harness_negated.i [2024-11-24 01:25:44,453 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 01:25:44,455 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_byte_buf_append_dynamic_harness_negated.i that has 19 procedures, 248 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-24 01:25:44,533 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 01:25:44,548 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;@520de43d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 01:25:44,548 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 01:25:44,553 INFO L276 IsEmpty]: Start isEmpty. Operand has 248 states, 156 states have (on average 1.2371794871794872) internal successors, (193), 157 states have internal predecessors, (193), 72 states have call successors, (72), 18 states have call predecessors, (72), 18 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2024-11-24 01:25:44,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-24 01:25:44,564 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:25:44,565 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:25:44,565 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:25:44,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:25:44,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1548813975, now seen corresponding path program 1 times [2024-11-24 01:25:44,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:25:44,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574050892] [2024-11-24 01:25:44,581 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:25:44,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:27:19,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:27:20,719 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-24 01:27:20,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:27:20,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574050892] [2024-11-24 01:27:20,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574050892] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:27:20,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415849570] [2024-11-24 01:27:20,721 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:27:20,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:27:20,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26758402-b4fb-44a8-88ed-5e30dd5a9621/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:27:20,725 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26758402-b4fb-44a8-88ed-5e30dd5a9621/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:27:20,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26758402-b4fb-44a8-88ed-5e30dd5a9621/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 01:28:58,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:28:58,697 INFO L256 TraceCheckSpWp]: Trace formula consists of 7655 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-24 01:28:58,710 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:28:58,729 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-24 01:28:58,729 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:28:58,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415849570] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:28:58,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:28:58,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-24 01:28:58,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346878847] [2024-11-24 01:28:58,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:28:58,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 01:28:58,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:28:58,768 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 01:28:58,769 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 01:28:58,771 INFO L87 Difference]: Start difference. First operand has 248 states, 156 states have (on average 1.2371794871794872) internal successors, (193), 157 states have internal predecessors, (193), 72 states have call successors, (72), 18 states have call predecessors, (72), 18 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) 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, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-24 01:28:58,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:28:58,868 INFO L93 Difference]: Finished difference Result 488 states and 707 transitions. [2024-11-24 01:28:58,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 01:28:58,870 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, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 83 [2024-11-24 01:28:58,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:28:58,880 INFO L225 Difference]: With dead ends: 488 [2024-11-24 01:28:58,880 INFO L226 Difference]: Without dead ends: 243 [2024-11-24 01:28:58,887 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 01:28:58,890 INFO L435 NwaCegarLoop]: 333 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, 333 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 [2024-11-24 01:28:58,890 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:28:58,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2024-11-24 01:28:58,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2024-11-24 01:28:58,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 152 states have (on average 1.2171052631578947) internal successors, (185), 153 states have internal predecessors, (185), 72 states have call successors, (72), 18 states have call predecessors, (72), 18 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2024-11-24 01:28:58,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 328 transitions. [2024-11-24 01:28:58,957 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 328 transitions. Word has length 83 [2024-11-24 01:28:58,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:28:58,960 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 328 transitions. [2024-11-24 01:28:58,960 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, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-24 01:28:58,961 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 328 transitions. [2024-11-24 01:28:58,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-24 01:28:58,964 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:28:58,965 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:28:58,993 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26758402-b4fb-44a8-88ed-5e30dd5a9621/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 01:28:59,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26758402-b4fb-44a8-88ed-5e30dd5a9621/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-24 01:28:59,166 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:28:59,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:28:59,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1861904943, now seen corresponding path program 1 times [2024-11-24 01:28:59,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:28:59,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463036662] [2024-11-24 01:28:59,167 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:28:59,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:30:34,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:30:37,178 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-24 01:30:37,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:30:37,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463036662] [2024-11-24 01:30:37,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463036662] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:30:37,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720325373] [2024-11-24 01:30:37,178 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:30:37,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:30:37,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26758402-b4fb-44a8-88ed-5e30dd5a9621/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:30:37,181 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26758402-b4fb-44a8-88ed-5e30dd5a9621/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:30:37,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26758402-b4fb-44a8-88ed-5e30dd5a9621/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 01:32:24,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:32:24,977 INFO L256 TraceCheckSpWp]: Trace formula consists of 7660 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-24 01:32:24,989 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:32:25,807 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-24 01:32:25,807 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:32:25,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720325373] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:32:25,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:32:25,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2024-11-24 01:32:25,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937646300] [2024-11-24 01:32:25,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:32:25,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:32:25,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:32:25,810 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:32:25,810 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:32:25,811 INFO L87 Difference]: Start difference. First operand 243 states and 328 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, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-24 01:32:28,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:32:28,003 INFO L93 Difference]: Finished difference Result 478 states and 649 transitions. [2024-11-24 01:32:28,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:32:28,004 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, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 85 [2024-11-24 01:32:28,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:32:28,010 INFO L225 Difference]: With dead ends: 478 [2024-11-24 01:32:28,010 INFO L226 Difference]: Without dead ends: 246 [2024-11-24 01:32:28,012 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:32:28,013 INFO L435 NwaCegarLoop]: 268 mSDtfsCounter, 350 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-24 01:32:28,013 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 986 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-24 01:32:28,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2024-11-24 01:32:28,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2024-11-24 01:32:28,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 154 states have (on average 1.2142857142857142) internal successors, (187), 156 states have internal predecessors, (187), 72 states have call successors, (72), 18 states have call predecessors, (72), 19 states have return successors, (76), 71 states have call predecessors, (76), 71 states have call successors, (76) [2024-11-24 01:32:28,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 335 transitions. [2024-11-24 01:32:28,049 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 335 transitions. Word has length 85 [2024-11-24 01:32:28,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:32:28,050 INFO L471 AbstractCegarLoop]: Abstraction has 246 states and 335 transitions. [2024-11-24 01:32:28,050 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, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-24 01:32:28,050 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 335 transitions. [2024-11-24 01:32:28,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-24 01:32:28,055 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:32:28,056 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:32:28,089 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26758402-b4fb-44a8-88ed-5e30dd5a9621/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-24 01:32:28,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26758402-b4fb-44a8-88ed-5e30dd5a9621/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-24 01:32:28,257 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:32:28,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:32:28,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1192287750, now seen corresponding path program 1 times [2024-11-24 01:32:28,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:32:28,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491007484] [2024-11-24 01:32:28,257 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:32:28,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:34:18,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:34:21,497 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-24 01:34:21,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:34:21,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491007484] [2024-11-24 01:34:21,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491007484] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:34:21,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972260811] [2024-11-24 01:34:21,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:34:21,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:34:21,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26758402-b4fb-44a8-88ed-5e30dd5a9621/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:34:21,503 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26758402-b4fb-44a8-88ed-5e30dd5a9621/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:34:21,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26758402-b4fb-44a8-88ed-5e30dd5a9621/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 01:36:13,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:36:13,394 INFO L256 TraceCheckSpWp]: Trace formula consists of 7677 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-24 01:36:13,402 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:36:14,522 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 34 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-24 01:36:14,523 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:36:15,751 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-24 01:36:15,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972260811] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:36:15,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:36:15,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 11 [2024-11-24 01:36:15,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261192071] [2024-11-24 01:36:15,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:36:15,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:36:15,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:36:15,755 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:36:15,755 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:36:15,756 INFO L87 Difference]: Start difference. First operand 246 states and 335 transitions. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 7 states have call successors, (31), 3 states have call predecessors, (31), 5 states have return successors, (30), 7 states have call predecessors, (30), 7 states have call successors, (30) [2024-11-24 01:36:18,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:36:18,358 INFO L93 Difference]: Finished difference Result 475 states and 649 transitions. [2024-11-24 01:36:18,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:36:18,361 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 7 states have call successors, (31), 3 states have call predecessors, (31), 5 states have return successors, (30), 7 states have call predecessors, (30), 7 states have call successors, (30) Word has length 91 [2024-11-24 01:36:18,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:36:18,370 INFO L225 Difference]: With dead ends: 475 [2024-11-24 01:36:18,370 INFO L226 Difference]: Without dead ends: 249 [2024-11-24 01:36:18,372 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 175 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-24 01:36:18,375 INFO L435 NwaCegarLoop]: 274 mSDtfsCounter, 316 mSDsluCounter, 1216 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 1490 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:36:18,376 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 1490 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-24 01:36:18,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2024-11-24 01:36:18,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2024-11-24 01:36:18,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 156 states have (on average 1.2115384615384615) internal successors, (189), 159 states have internal predecessors, (189), 72 states have call successors, (72), 18 states have call predecessors, (72), 20 states have return successors, (81), 71 states have call predecessors, (81), 71 states have call successors, (81) [2024-11-24 01:36:18,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 342 transitions. [2024-11-24 01:36:18,410 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 342 transitions. Word has length 91 [2024-11-24 01:36:18,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:36:18,412 INFO L471 AbstractCegarLoop]: Abstraction has 249 states and 342 transitions. [2024-11-24 01:36:18,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 7 states have call successors, (31), 3 states have call predecessors, (31), 5 states have return successors, (30), 7 states have call predecessors, (30), 7 states have call successors, (30) [2024-11-24 01:36:18,413 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 342 transitions. [2024-11-24 01:36:18,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-24 01:36:18,418 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:36:18,418 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:36:18,444 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26758402-b4fb-44a8-88ed-5e30dd5a9621/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-24 01:36:18,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26758402-b4fb-44a8-88ed-5e30dd5a9621/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:36:18,619 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:36:18,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:36:18,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1771155115, now seen corresponding path program 1 times [2024-11-24 01:36:18,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:36:18,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854320947] [2024-11-24 01:36:18,620 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:36:18,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:37:56,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:37:59,227 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-24 01:37:59,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:37:59,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854320947] [2024-11-24 01:37:59,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854320947] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:37:59,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:37:59,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 01:37:59,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850775221] [2024-11-24 01:37:59,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:37:59,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:37:59,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:37:59,229 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:37:59,229 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:37:59,229 INFO L87 Difference]: Start difference. First operand 249 states and 342 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-24 01:37:59,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:37:59,809 INFO L93 Difference]: Finished difference Result 472 states and 642 transitions. [2024-11-24 01:37:59,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:37:59,810 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 93 [2024-11-24 01:37:59,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:37:59,813 INFO L225 Difference]: With dead ends: 472 [2024-11-24 01:37:59,813 INFO L226 Difference]: Without dead ends: 246 [2024-11-24 01:37:59,815 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:37:59,816 INFO L435 NwaCegarLoop]: 314 mSDtfsCounter, 116 mSDsluCounter, 754 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 1068 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-24 01:37:59,816 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 1068 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-24 01:37:59,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2024-11-24 01:37:59,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2024-11-24 01:37:59,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 154 states have (on average 1.2077922077922079) internal successors, (186), 156 states have internal predecessors, (186), 72 states have call successors, (72), 18 states have call predecessors, (72), 19 states have return successors, (76), 71 states have call predecessors, (76), 71 states have call successors, (76) [2024-11-24 01:37:59,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 334 transitions. [2024-11-24 01:37:59,844 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 334 transitions. Word has length 93 [2024-11-24 01:37:59,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:37:59,845 INFO L471 AbstractCegarLoop]: Abstraction has 246 states and 334 transitions. [2024-11-24 01:37:59,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-24 01:37:59,845 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 334 transitions. [2024-11-24 01:37:59,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-24 01:37:59,847 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:37:59,847 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:37:59,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 01:37:59,848 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:37:59,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:37:59,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1559133104, now seen corresponding path program 1 times [2024-11-24 01:37:59,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:37:59,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150449908] [2024-11-24 01:37:59,849 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:37:59,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:39:35,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:39:38,440 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-24 01:39:38,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:39:38,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150449908] [2024-11-24 01:39:38,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150449908] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:39:38,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:39:38,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 01:39:38,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735011258] [2024-11-24 01:39:38,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:39:38,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:39:38,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:39:38,442 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:39:38,443 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:39:38,443 INFO L87 Difference]: Start difference. First operand 246 states and 334 transitions. Second operand has 6 states, 5 states have (on average 10.0) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-24 01:39:39,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:39:39,357 INFO L93 Difference]: Finished difference Result 469 states and 632 transitions. [2024-11-24 01:39:39,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:39:39,358 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.0) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 95 [2024-11-24 01:39:39,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:39:39,361 INFO L225 Difference]: With dead ends: 469 [2024-11-24 01:39:39,361 INFO L226 Difference]: Without dead ends: 243 [2024-11-24 01:39:39,363 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:39:39,366 INFO L435 NwaCegarLoop]: 305 mSDtfsCounter, 119 mSDsluCounter, 1027 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 1332 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-24 01:39:39,366 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 1332 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-24 01:39:39,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2024-11-24 01:39:39,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2024-11-24 01:39:39,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 152 states have (on average 1.2039473684210527) internal successors, (183), 153 states have internal predecessors, (183), 72 states have call successors, (72), 18 states have call predecessors, (72), 18 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2024-11-24 01:39:39,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 326 transitions. [2024-11-24 01:39:39,389 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 326 transitions. Word has length 95 [2024-11-24 01:39:39,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:39:39,390 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 326 transitions. [2024-11-24 01:39:39,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.0) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-24 01:39:39,390 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 326 transitions. [2024-11-24 01:39:39,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-24 01:39:39,391 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:39:39,392 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:39:39,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 01:39:39,392 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:39:39,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:39:39,393 INFO L85 PathProgramCache]: Analyzing trace with hash 352895227, now seen corresponding path program 1 times [2024-11-24 01:39:39,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:39:39,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260852945] [2024-11-24 01:39:39,393 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:39:39,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms