./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f14e06-973d-4e28-a9fc-0fc58974e2a2/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f14e06-973d-4e28-a9fc-0fc58974e2a2/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f14e06-973d-4e28-a9fc-0fc58974e2a2/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f14e06-973d-4e28-a9fc-0fc58974e2a2/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f14e06-973d-4e28-a9fc-0fc58974e2a2/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f14e06-973d-4e28-a9fc-0fc58974e2a2/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 885bac69872c2b34c2b244d1618f4ab60115ba2f5fec2456cdf32ad6a7277fb1 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 05:22:17,433 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 05:22:17,533 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f14e06-973d-4e28-a9fc-0fc58974e2a2/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-28 05:22:17,539 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 05:22:17,540 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 05:22:17,583 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 05:22:17,585 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 05:22:17,586 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 05:22:17,586 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 05:22:17,587 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 05:22:17,588 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 05:22:17,588 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 05:22:17,588 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 05:22:17,588 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 05:22:17,589 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 05:22:17,589 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 05:22:17,589 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 05:22:17,590 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 05:22:17,590 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 05:22:17,590 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 05:22:17,590 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 05:22:17,591 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 05:22:17,591 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 05:22:17,591 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 05:22:17,591 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 05:22:17,591 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 05:22:17,591 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:22:17,591 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:22:17,592 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:22:17,592 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:22:17,592 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 05:22:17,592 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:22:17,593 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:22:17,593 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:22:17,593 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:22:17,594 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 05:22:17,594 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 05:22:17,594 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 05:22:17,594 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 05:22:17,594 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 05:22:17,594 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 05:22:17,594 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 05:22:17,594 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 05:22:17,595 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 05:22:17,595 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 05:22:17,595 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_a6f14e06-973d-4e28-a9fc-0fc58974e2a2/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 885bac69872c2b34c2b244d1618f4ab60115ba2f5fec2456cdf32ad6a7277fb1 [2024-11-28 05:22:17,912 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 05:22:17,927 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 05:22:17,930 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 05:22:17,931 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 05:22:17,932 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 05:22:17,934 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f14e06-973d-4e28-a9fc-0fc58974e2a2/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness_negated.i [2024-11-28 05:22:20,874 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f14e06-973d-4e28-a9fc-0fc58974e2a2/bin/uautomizer-verify-aQ6SnzHsRB/data/777c834bb/0d136b2d5d6b481dbb57d828450cc608/FLAG6df016bbb [2024-11-28 05:22:21,506 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 05:22:21,510 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f14e06-973d-4e28-a9fc-0fc58974e2a2/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness_negated.i [2024-11-28 05:22:21,562 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f14e06-973d-4e28-a9fc-0fc58974e2a2/bin/uautomizer-verify-aQ6SnzHsRB/data/777c834bb/0d136b2d5d6b481dbb57d828450cc608/FLAG6df016bbb [2024-11-28 05:22:21,577 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f14e06-973d-4e28-a9fc-0fc58974e2a2/bin/uautomizer-verify-aQ6SnzHsRB/data/777c834bb/0d136b2d5d6b481dbb57d828450cc608 [2024-11-28 05:22:21,579 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 05:22:21,581 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 05:22:21,582 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 05:22:21,582 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 05:22:21,587 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 05:22:21,587 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:22:21" (1/1) ... [2024-11-28 05:22:21,589 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25ced71b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:22:21, skipping insertion in model container [2024-11-28 05:22:21,589 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:22:21" (1/1) ... [2024-11-28 05:22:21,683 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 05:22:21,988 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_a6f14e06-973d-4e28-a9fc-0fc58974e2a2/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness_negated.i[4495,4508] [2024-11-28 05:22:21,998 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_a6f14e06-973d-4e28-a9fc-0fc58974e2a2/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness_negated.i[4555,4568] [2024-11-28 05:22:23,093 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:22:23,094 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:22:23,094 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:22:23,095 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:22:23,097 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:22:23,112 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:22:23,113 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:22:23,115 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:22:23,115 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:22:24,094 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:22:24,095 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:22:24,200 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:22:24,279 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 05:22:24,300 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_a6f14e06-973d-4e28-a9fc-0fc58974e2a2/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness_negated.i[4495,4508] [2024-11-28 05:22:24,300 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_a6f14e06-973d-4e28-a9fc-0fc58974e2a2/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_c_str_harness_negated.i[4555,4568] [2024-11-28 05:22:24,362 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:22:24,363 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:22:24,363 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:22:24,364 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:22:24,364 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:22:24,372 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:22:24,372 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:22:24,374 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:22:24,374 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:22:24,571 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8245] [2024-11-28 05:22:24,572 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:22:24,573 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:22:24,592 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8731-8742] [2024-11-28 05:22:24,617 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:22:24,864 INFO L204 MainTranslator]: Completed translation [2024-11-28 05:22:24,864 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:22:24 WrapperNode [2024-11-28 05:22:24,865 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 05:22:24,866 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 05:22:24,866 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 05:22:24,866 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 05:22:24,877 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:22:24" (1/1) ... [2024-11-28 05:22:24,955 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:22:24" (1/1) ... [2024-11-28 05:22:25,063 INFO L138 Inliner]: procedures = 680, calls = 2633, calls flagged for inlining = 64, calls inlined = 10, statements flattened = 902 [2024-11-28 05:22:25,063 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 05:22:25,064 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 05:22:25,064 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 05:22:25,064 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 05:22:25,075 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:22:24" (1/1) ... [2024-11-28 05:22:25,076 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:22:24" (1/1) ... [2024-11-28 05:22:25,094 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:22:24" (1/1) ... [2024-11-28 05:22:25,203 INFO L175 MemorySlicer]: Split 556 memory accesses to 6 slices as follows [2, 257, 238, 40, 13, 6]. 46 percent of accesses are in the largest equivalence class. The 21 initializations are split as follows [2, 0, 6, 8, 5, 0]. The 493 writes are split as follows [0, 257, 232, 2, 0, 2]. [2024-11-28 05:22:25,204 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:22:24" (1/1) ... [2024-11-28 05:22:25,204 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:22:24" (1/1) ... [2024-11-28 05:22:25,252 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:22:24" (1/1) ... [2024-11-28 05:22:25,254 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:22:24" (1/1) ... [2024-11-28 05:22:25,259 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:22:24" (1/1) ... [2024-11-28 05:22:25,268 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:22:24" (1/1) ... [2024-11-28 05:22:25,273 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:22:24" (1/1) ... [2024-11-28 05:22:25,285 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 05:22:25,286 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 05:22:25,286 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 05:22:25,286 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 05:22:25,287 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:22:24" (1/1) ... [2024-11-28 05:22:25,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:22:25,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f14e06-973d-4e28-a9fc-0fc58974e2a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:22:25,350 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f14e06-973d-4e28-a9fc-0fc58974e2a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 05:22:25,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f14e06-973d-4e28-a9fc-0fc58974e2a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 05:22:25,394 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq_c_str [2024-11-28 05:22:25,394 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq_c_str [2024-11-28 05:22:25,394 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2024-11-28 05:22:25,395 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2024-11-28 05:22:25,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 05:22:25,396 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-28 05:22:25,396 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-28 05:22:25,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-28 05:22:25,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-28 05:22:25,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-28 05:22:25,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-28 05:22:25,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-28 05:22:25,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-28 05:22:25,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 05:22:25,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 05:22:25,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 05:22:25,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 05:22:25,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-28 05:22:25,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-28 05:22:25,399 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 05:22:25,399 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 05:22:25,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 05:22:25,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 05:22:25,399 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2024-11-28 05:22:25,399 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2024-11-28 05:22:25,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 05:22:25,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 05:22:25,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-28 05:22:25,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-28 05:22:25,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-28 05:22:25,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-28 05:22:25,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 05:22:25,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 05:22:25,400 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-28 05:22:25,401 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-28 05:22:25,401 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2024-11-28 05:22:25,401 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2024-11-28 05:22:25,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-28 05:22:25,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-28 05:22:25,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-28 05:22:25,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-28 05:22:25,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-28 05:22:25,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-11-28 05:22:25,401 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 05:22:25,401 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 05:22:25,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 05:22:25,401 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 05:22:25,401 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 05:22:25,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-28 05:22:25,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-28 05:22:25,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-28 05:22:25,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-28 05:22:25,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-28 05:22:25,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-28 05:22:25,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-28 05:22:25,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-28 05:22:25,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-28 05:22:25,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-28 05:22:25,402 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-11-28 05:22:25,402 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-11-28 05:22:25,402 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-28 05:22:25,403 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-28 05:22:25,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 05:22:25,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 05:22:25,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 05:22:25,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 05:22:25,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-28 05:22:25,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-28 05:22:25,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 05:22:25,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 05:22:25,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 05:22:25,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 05:22:25,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-28 05:22:25,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-28 05:22:25,804 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 05:22:25,807 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 05:22:35,538 INFO L? ?]: Removed 120 outVars from TransFormulas that were not future-live. [2024-11-28 05:22:35,538 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 05:22:35,554 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 05:22:35,557 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-28 05:22:35,557 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:22:35 BoogieIcfgContainer [2024-11-28 05:22:35,558 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 05:22:35,561 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 05:22:35,561 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 05:22:35,571 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 05:22:35,571 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:22:21" (1/3) ... [2024-11-28 05:22:35,572 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d3c6b08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:22:35, skipping insertion in model container [2024-11-28 05:22:35,573 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:22:24" (2/3) ... [2024-11-28 05:22:35,574 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d3c6b08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:22:35, skipping insertion in model container [2024-11-28 05:22:35,574 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:22:35" (3/3) ... [2024-11-28 05:22:35,576 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_eq_c_str_harness_negated.i [2024-11-28 05:22:35,593 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 05:22:35,597 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_byte_buf_eq_c_str_harness_negated.i that has 11 procedures, 140 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 05:22:35,676 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 05:22:35,691 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;@2f9066b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 05:22:35,692 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 05:22:35,698 INFO L276 IsEmpty]: Start isEmpty. Operand has 140 states, 92 states have (on average 1.25) internal successors, (115), 94 states have internal predecessors, (115), 36 states have call successors, (36), 10 states have call predecessors, (36), 10 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-28 05:22:35,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-28 05:22:35,715 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:22:35,717 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:22:35,717 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:22:35,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:22:35,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1835431672, now seen corresponding path program 1 times [2024-11-28 05:22:35,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:22:35,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637335507] [2024-11-28 05:22:35,738 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:22:35,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:24:05,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:24:06,244 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2024-11-28 05:24:06,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:24:06,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637335507] [2024-11-28 05:24:06,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637335507] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:24:06,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605080917] [2024-11-28 05:24:06,246 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:24:06,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:24:06,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f14e06-973d-4e28-a9fc-0fc58974e2a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:24:06,250 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f14e06-973d-4e28-a9fc-0fc58974e2a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:24:06,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f14e06-973d-4e28-a9fc-0fc58974e2a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 05:25:40,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:25:40,354 INFO L256 TraceCheckSpWp]: Trace formula consists of 7802 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 05:25:40,368 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:25:40,391 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2024-11-28 05:25:40,392 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:25:40,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605080917] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:25:40,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:25:40,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 05:25:40,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723535908] [2024-11-28 05:25:40,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:25:40,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 05:25:40,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:25:40,424 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 05:25:40,425 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 05:25:40,429 INFO L87 Difference]: Start difference. First operand has 140 states, 92 states have (on average 1.25) internal successors, (115), 94 states have internal predecessors, (115), 36 states have call successors, (36), 10 states have call predecessors, (36), 10 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Second operand has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-28 05:25:40,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:25:40,479 INFO L93 Difference]: Finished difference Result 275 states and 395 transitions. [2024-11-28 05:25:40,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 05:25:40,482 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 125 [2024-11-28 05:25:40,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:25:40,491 INFO L225 Difference]: With dead ends: 275 [2024-11-28 05:25:40,492 INFO L226 Difference]: Without dead ends: 135 [2024-11-28 05:25:40,498 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 05:25:40,501 INFO L435 NwaCegarLoop]: 184 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, 184 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 [2024-11-28 05:25:40,502 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:25:40,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-11-28 05:25:40,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2024-11-28 05:25:40,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 88 states have (on average 1.2159090909090908) internal successors, (107), 89 states have internal predecessors, (107), 36 states have call successors, (36), 10 states have call predecessors, (36), 10 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-28 05:25:40,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 178 transitions. [2024-11-28 05:25:40,579 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 178 transitions. Word has length 125 [2024-11-28 05:25:40,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:25:40,584 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 178 transitions. [2024-11-28 05:25:40,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-28 05:25:40,584 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 178 transitions. [2024-11-28 05:25:40,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-28 05:25:40,591 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:25:40,591 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:25:40,622 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f14e06-973d-4e28-a9fc-0fc58974e2a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 05:25:40,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f14e06-973d-4e28-a9fc-0fc58974e2a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-28 05:25:40,793 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:25:40,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:25:40,794 INFO L85 PathProgramCache]: Analyzing trace with hash 987300848, now seen corresponding path program 1 times [2024-11-28 05:25:40,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:25:40,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476407056] [2024-11-28 05:25:40,795 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:25:40,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:27:14,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:27:18,182 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-11-28 05:27:18,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:27:18,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476407056] [2024-11-28 05:27:18,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476407056] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:27:18,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548858917] [2024-11-28 05:27:18,183 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:27:18,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:27:18,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f14e06-973d-4e28-a9fc-0fc58974e2a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:27:18,188 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f14e06-973d-4e28-a9fc-0fc58974e2a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:27:18,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f14e06-973d-4e28-a9fc-0fc58974e2a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 05:28:55,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:28:55,483 INFO L256 TraceCheckSpWp]: Trace formula consists of 7802 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 05:28:55,492 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:28:56,389 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-11-28 05:28:56,389 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:28:56,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548858917] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:28:56,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:28:56,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2024-11-28 05:28:56,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619507566] [2024-11-28 05:28:56,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:28:56,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:28:56,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:28:56,391 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:28:56,391 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:28:56,391 INFO L87 Difference]: Start difference. First operand 135 states and 178 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-28 05:28:57,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:28:57,613 INFO L93 Difference]: Finished difference Result 240 states and 321 transitions. [2024-11-28 05:28:57,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:28:57,615 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 125 [2024-11-28 05:28:57,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:28:57,618 INFO L225 Difference]: With dead ends: 240 [2024-11-28 05:28:57,618 INFO L226 Difference]: Without dead ends: 138 [2024-11-28 05:28:57,620 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-28 05:28:57,623 INFO L435 NwaCegarLoop]: 135 mSDtfsCounter, 181 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:28:57,624 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 364 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 05:28:57,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-11-28 05:28:57,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2024-11-28 05:28:57,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 90 states have (on average 1.211111111111111) internal successors, (109), 92 states have internal predecessors, (109), 36 states have call successors, (36), 10 states have call predecessors, (36), 11 states have return successors, (37), 35 states have call predecessors, (37), 35 states have call successors, (37) [2024-11-28 05:28:57,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 182 transitions. [2024-11-28 05:28:57,654 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 182 transitions. Word has length 125 [2024-11-28 05:28:57,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:28:57,655 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 182 transitions. [2024-11-28 05:28:57,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-28 05:28:57,656 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 182 transitions. [2024-11-28 05:28:57,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-28 05:28:57,658 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:28:57,659 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:28:57,686 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f14e06-973d-4e28-a9fc-0fc58974e2a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 05:28:57,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f14e06-973d-4e28-a9fc-0fc58974e2a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:28:57,860 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:28:57,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:28:57,861 INFO L85 PathProgramCache]: Analyzing trace with hash -154164069, now seen corresponding path program 1 times [2024-11-28 05:28:57,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:28:57,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130563312] [2024-11-28 05:28:57,861 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:28:57,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:30:34,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:30:40,437 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-11-28 05:30:40,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:30:40,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130563312] [2024-11-28 05:30:40,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130563312] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:30:40,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177811193] [2024-11-28 05:30:40,437 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:30:40,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:30:40,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f14e06-973d-4e28-a9fc-0fc58974e2a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:30:40,439 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f14e06-973d-4e28-a9fc-0fc58974e2a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:30:40,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f14e06-973d-4e28-a9fc-0fc58974e2a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 05:32:24,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:32:24,807 INFO L256 TraceCheckSpWp]: Trace formula consists of 7819 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 05:32:24,814 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:32:26,002 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-11-28 05:32:26,003 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:32:26,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177811193] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:32:26,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:32:26,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2024-11-28 05:32:26,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33031584] [2024-11-28 05:32:26,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:32:26,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:32:26,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:32:26,005 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:32:26,005 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-11-28 05:32:26,005 INFO L87 Difference]: Start difference. First operand 138 states and 182 transitions. Second operand has 7 states, 6 states have (on average 10.0) internal successors, (60), 7 states have internal predecessors, (60), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-28 05:32:27,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:32:27,630 INFO L93 Difference]: Finished difference Result 229 states and 303 transitions. [2024-11-28 05:32:27,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 05:32:27,631 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.0) internal successors, (60), 7 states have internal predecessors, (60), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) Word has length 131 [2024-11-28 05:32:27,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:32:27,633 INFO L225 Difference]: With dead ends: 229 [2024-11-28 05:32:27,633 INFO L226 Difference]: Without dead ends: 135 [2024-11-28 05:32:27,635 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2024-11-28 05:32:27,635 INFO L435 NwaCegarLoop]: 134 mSDtfsCounter, 183 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:32:27,636 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 492 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 05:32:27,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-11-28 05:32:27,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2024-11-28 05:32:27,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 88 states have (on average 1.2045454545454546) internal successors, (106), 89 states have internal predecessors, (106), 36 states have call successors, (36), 10 states have call predecessors, (36), 10 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-28 05:32:27,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 177 transitions. [2024-11-28 05:32:27,653 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 177 transitions. Word has length 131 [2024-11-28 05:32:27,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:32:27,653 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 177 transitions. [2024-11-28 05:32:27,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.0) internal successors, (60), 7 states have internal predecessors, (60), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-28 05:32:27,654 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 177 transitions. [2024-11-28 05:32:27,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-28 05:32:27,656 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:32:27,656 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:32:27,691 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f14e06-973d-4e28-a9fc-0fc58974e2a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 05:32:27,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f14e06-973d-4e28-a9fc-0fc58974e2a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-28 05:32:27,857 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:32:27,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:32:27,857 INFO L85 PathProgramCache]: Analyzing trace with hash -591260751, now seen corresponding path program 1 times [2024-11-28 05:32:27,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:32:27,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355475247] [2024-11-28 05:32:27,858 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:32:27,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:34:13,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:34:29,257 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-28 05:34:29,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:34:29,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355475247] [2024-11-28 05:34:29,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355475247] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:34:29,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103302198] [2024-11-28 05:34:29,258 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:34:29,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:34:29,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f14e06-973d-4e28-a9fc-0fc58974e2a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:34:29,266 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f14e06-973d-4e28-a9fc-0fc58974e2a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:34:29,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f14e06-973d-4e28-a9fc-0fc58974e2a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 05:36:13,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:36:13,703 INFO L256 TraceCheckSpWp]: Trace formula consists of 7853 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-28 05:36:13,713 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:36:14,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 05:36:16,075 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-28 05:36:16,075 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:36:16,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103302198] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:36:16,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:36:16,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [11] total 19 [2024-11-28 05:36:16,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328729531] [2024-11-28 05:36:16,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:36:16,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 05:36:16,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:36:16,081 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 05:36:16,081 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2024-11-28 05:36:16,081 INFO L87 Difference]: Start difference. First operand 135 states and 177 transitions. Second operand has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 9 states have internal predecessors, (64), 4 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-28 05:36:20,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:36:24,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:36:27,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:36:27,860 INFO L93 Difference]: Finished difference Result 254 states and 334 transitions. [2024-11-28 05:36:27,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 05:36:27,861 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 9 states have internal predecessors, (64), 4 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) Word has length 143 [2024-11-28 05:36:27,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:36:27,863 INFO L225 Difference]: With dead ends: 254 [2024-11-28 05:36:27,863 INFO L226 Difference]: Without dead ends: 152 [2024-11-28 05:36:27,864 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2024-11-28 05:36:27,865 INFO L435 NwaCegarLoop]: 145 mSDtfsCounter, 124 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 18 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 783 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:36:27,865 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 783 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 390 Invalid, 2 Unknown, 0 Unchecked, 11.3s Time] [2024-11-28 05:36:27,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-11-28 05:36:27,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 146. [2024-11-28 05:36:27,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 96 states have (on average 1.1875) internal successors, (114), 98 states have internal predecessors, (114), 36 states have call successors, (36), 12 states have call predecessors, (36), 13 states have return successors, (37), 35 states have call predecessors, (37), 35 states have call successors, (37) [2024-11-28 05:36:27,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 187 transitions. [2024-11-28 05:36:27,888 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 187 transitions. Word has length 143 [2024-11-28 05:36:27,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:36:27,889 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 187 transitions. [2024-11-28 05:36:27,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 9 states have internal predecessors, (64), 4 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-28 05:36:27,889 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 187 transitions. [2024-11-28 05:36:27,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-28 05:36:27,892 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:36:27,892 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:36:27,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f14e06-973d-4e28-a9fc-0fc58974e2a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 05:36:28,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6f14e06-973d-4e28-a9fc-0fc58974e2a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:36:28,093 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:36:28,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:36:28,093 INFO L85 PathProgramCache]: Analyzing trace with hash 874487225, now seen corresponding path program 1 times [2024-11-28 05:36:28,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:36:28,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211992050] [2024-11-28 05:36:28,094 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:36:28,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms