./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_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_4ef728fe-8a7f-4a89-a017-cbe36dd127f6/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef728fe-8a7f-4a89-a017-cbe36dd127f6/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_4ef728fe-8a7f-4a89-a017-cbe36dd127f6/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef728fe-8a7f-4a89-a017-cbe36dd127f6/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef728fe-8a7f-4a89-a017-cbe36dd127f6/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_4ef728fe-8a7f-4a89-a017-cbe36dd127f6/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 e55ac5434b951971879a153437b53000a6218e43a47ba6f85cc2dc8135a82b6f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:15:26,192 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:15:26,304 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef728fe-8a7f-4a89-a017-cbe36dd127f6/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-28 03:15:26,315 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:15:26,318 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:15:26,359 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:15:26,361 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:15:26,361 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:15:26,361 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:15:26,362 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:15:26,363 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:15:26,363 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:15:26,363 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:15:26,363 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:15:26,364 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:15:26,364 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:15:26,364 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:15:26,365 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:15:26,365 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:15:26,365 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:15:26,365 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:15:26,365 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:15:26,365 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:15:26,365 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:15:26,365 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:15:26,366 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:15:26,366 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:15:26,366 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:15:26,366 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:15:26,366 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:15:26,366 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:15:26,366 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:15:26,367 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:15:26,367 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:15:26,367 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:15:26,368 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:15:26,368 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:15:26,368 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:15:26,368 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:15:26,368 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:15:26,368 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:15:26,368 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:15:26,368 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:15:26,368 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:15:26,368 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:15:26,368 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_4ef728fe-8a7f-4a89-a017-cbe36dd127f6/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 -> e55ac5434b951971879a153437b53000a6218e43a47ba6f85cc2dc8135a82b6f [2024-11-28 03:15:26,680 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:15:26,688 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:15:26,691 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:15:26,692 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:15:26,692 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:15:26,694 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef728fe-8a7f-4a89-a017-cbe36dd127f6/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness_negated.i [2024-11-28 03:15:29,675 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef728fe-8a7f-4a89-a017-cbe36dd127f6/bin/uautomizer-verify-aQ6SnzHsRB/data/46ca7d93d/96e53eebef104832b695b0ef1ab9946f/FLAGf26be8049 [2024-11-28 03:15:30,365 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:15:30,368 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef728fe-8a7f-4a89-a017-cbe36dd127f6/sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness_negated.i [2024-11-28 03:15:30,401 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef728fe-8a7f-4a89-a017-cbe36dd127f6/bin/uautomizer-verify-aQ6SnzHsRB/data/46ca7d93d/96e53eebef104832b695b0ef1ab9946f/FLAGf26be8049 [2024-11-28 03:15:30,748 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef728fe-8a7f-4a89-a017-cbe36dd127f6/bin/uautomizer-verify-aQ6SnzHsRB/data/46ca7d93d/96e53eebef104832b695b0ef1ab9946f [2024-11-28 03:15:30,750 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:15:30,752 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:15:30,753 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:15:30,753 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:15:30,758 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:15:30,759 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:15:30" (1/1) ... [2024-11-28 03:15:30,760 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bb4d5a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:30, skipping insertion in model container [2024-11-28 03:15:30,760 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:15:30" (1/1) ... [2024-11-28 03:15:30,850 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:15:31,187 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_4ef728fe-8a7f-4a89-a017-cbe36dd127f6/sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness_negated.i[4494,4507] [2024-11-28 03:15:31,198 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_4ef728fe-8a7f-4a89-a017-cbe36dd127f6/sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness_negated.i[4554,4567] [2024-11-28 03:15:32,310 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:15:32,311 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:15:32,311 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:15:32,312 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:15:32,314 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:15:32,332 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:15:32,336 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:15:32,339 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:15:32,339 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:15:33,208 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:15:33,208 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:15:33,281 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:15:33,347 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:15:33,359 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_4ef728fe-8a7f-4a89-a017-cbe36dd127f6/sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness_negated.i[4494,4507] [2024-11-28 03:15:33,360 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_4ef728fe-8a7f-4a89-a017-cbe36dd127f6/sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness_negated.i[4554,4567] [2024-11-28 03:15:33,400 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:15:33,401 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:15:33,401 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:15:33,402 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:15:33,402 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:15:33,409 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:15:33,410 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:15:33,411 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:15:33,411 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:15:33,629 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8259] [2024-11-28 03:15:33,630 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:15:33,631 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:15:33,650 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8745-8756] [2024-11-28 03:15:33,680 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:15:33,998 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:15:33,998 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:33 WrapperNode [2024-11-28 03:15:33,999 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:15:34,000 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:15:34,000 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:15:34,000 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:15:34,018 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:33" (1/1) ... [2024-11-28 03:15:34,152 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:33" (1/1) ... [2024-11-28 03:15:34,257 INFO L138 Inliner]: procedures = 680, calls = 2671, calls flagged for inlining = 60, calls inlined = 8, statements flattened = 974 [2024-11-28 03:15:34,258 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:15:34,258 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:15:34,258 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:15:34,258 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:15:34,269 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:33" (1/1) ... [2024-11-28 03:15:34,269 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:33" (1/1) ... [2024-11-28 03:15:34,280 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:33" (1/1) ... [2024-11-28 03:15:34,372 INFO L175 MemorySlicer]: Split 591 memory accesses to 5 slices as follows [257, 2, 245, 6, 81]. 43 percent of accesses are in the largest equivalence class. The 25 initializations are split as follows [0, 2, 11, 0, 12]. The 508 writes are split as follows [257, 0, 232, 2, 17]. [2024-11-28 03:15:34,372 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:33" (1/1) ... [2024-11-28 03:15:34,372 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:33" (1/1) ... [2024-11-28 03:15:34,423 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:33" (1/1) ... [2024-11-28 03:15:34,425 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:33" (1/1) ... [2024-11-28 03:15:34,433 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:33" (1/1) ... [2024-11-28 03:15:34,444 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:33" (1/1) ... [2024-11-28 03:15:34,452 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:33" (1/1) ... [2024-11-28 03:15:34,470 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:15:34,470 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:15:34,471 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:15:34,471 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:15:34,472 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:33" (1/1) ... [2024-11-28 03:15:34,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:15:34,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef728fe-8a7f-4a89-a017-cbe36dd127f6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:15:34,503 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef728fe-8a7f-4a89-a017-cbe36dd127f6/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:15:34,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef728fe-8a7f-4a89-a017-cbe36dd127f6/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:15:34,536 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2024-11-28 03:15:34,537 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2024-11-28 03:15:34,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 03:15:34,537 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-28 03:15:34,537 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-28 03:15:34,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-28 03:15:34,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-28 03:15:34,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-28 03:15:34,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-28 03:15:34,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-28 03:15:34,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 03:15:34,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 03:15:34,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 03:15:34,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 03:15:34,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-28 03:15:34,538 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 03:15:34,538 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 03:15:34,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 03:15:34,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:15:34,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 03:15:34,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 03:15:34,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-28 03:15:34,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-28 03:15:34,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-28 03:15:34,538 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_buf_has_allocated_buffer_member [2024-11-28 03:15:34,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_buf_has_allocated_buffer_member [2024-11-28 03:15:34,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:15:34,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:15:34,539 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-28 03:15:34,539 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-28 03:15:34,539 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2024-11-28 03:15:34,539 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2024-11-28 03:15:34,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-28 03:15:34,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-28 03:15:34,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-28 03:15:34,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-28 03:15:34,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-28 03:15:34,539 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 03:15:34,539 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 03:15:34,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 03:15:34,539 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 03:15:34,539 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 03:15:34,539 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-28 03:15:34,540 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-28 03:15:34,540 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-28 03:15:34,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-28 03:15:34,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-28 03:15:34,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-28 03:15:34,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-28 03:15:34,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-28 03:15:34,543 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-11-28 03:15:34,543 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-11-28 03:15:34,543 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_bounded [2024-11-28 03:15:34,543 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_bounded [2024-11-28 03:15:34,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 03:15:34,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 03:15:34,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 03:15:34,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 03:15:34,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-28 03:15:34,544 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2024-11-28 03:15:34,544 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2024-11-28 03:15:34,544 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2024-11-28 03:15:34,544 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2024-11-28 03:15:34,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:15:34,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 03:15:34,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 03:15:34,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 03:15:34,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-28 03:15:34,922 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:15:34,924 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:15:44,757 INFO L? ?]: Removed 110 outVars from TransFormulas that were not future-live. [2024-11-28 03:15:44,757 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:15:44,771 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:15:44,771 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 03:15:44,772 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:15:44 BoogieIcfgContainer [2024-11-28 03:15:44,772 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:15:44,774 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:15:44,774 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:15:44,779 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:15:44,779 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:15:30" (1/3) ... [2024-11-28 03:15:44,779 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@172fe414 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:15:44, skipping insertion in model container [2024-11-28 03:15:44,780 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:33" (2/3) ... [2024-11-28 03:15:44,780 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@172fe414 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:15:44, skipping insertion in model container [2024-11-28 03:15:44,780 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:15:44" (3/3) ... [2024-11-28 03:15:44,781 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_advance_harness_negated.i [2024-11-28 03:15:44,796 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:15:44,797 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_byte_buf_advance_harness_negated.i that has 12 procedures, 172 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-28 03:15:44,852 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:15:44,863 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;@7b7c2b8a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:15:44,864 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 03:15:44,868 INFO L276 IsEmpty]: Start isEmpty. Operand has 172 states, 105 states have (on average 1.2190476190476192) internal successors, (128), 105 states have internal predecessors, (128), 55 states have call successors, (55), 11 states have call predecessors, (55), 11 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2024-11-28 03:15:44,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-28 03:15:44,881 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:15:44,882 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 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] [2024-11-28 03:15:44,882 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:15:44,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:15:44,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1475621305, now seen corresponding path program 1 times [2024-11-28 03:15:44,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:15:44,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247436894] [2024-11-28 03:15:44,896 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:15:44,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:17:17,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:17:18,254 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-28 03:17:18,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:17:18,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247436894] [2024-11-28 03:17:18,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247436894] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:17:18,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868814574] [2024-11-28 03:17:18,257 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:17:18,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:17:18,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef728fe-8a7f-4a89-a017-cbe36dd127f6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:17:18,259 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef728fe-8a7f-4a89-a017-cbe36dd127f6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:17:18,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef728fe-8a7f-4a89-a017-cbe36dd127f6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:18:52,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:18:52,875 INFO L256 TraceCheckSpWp]: Trace formula consists of 7741 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 03:18:52,888 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:18:52,906 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-28 03:18:52,906 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:18:52,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868814574] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:18:52,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:18:52,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 03:18:52,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588658585] [2024-11-28 03:18:52,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:18:52,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 03:18:52,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:18:52,935 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 03:18:52,936 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:18:52,938 INFO L87 Difference]: Start difference. First operand has 172 states, 105 states have (on average 1.2190476190476192) internal successors, (128), 105 states have internal predecessors, (128), 55 states have call successors, (55), 11 states have call predecessors, (55), 11 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) Second operand has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-28 03:18:53,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:18:53,019 INFO L93 Difference]: Finished difference Result 340 states and 509 transitions. [2024-11-28 03:18:53,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 03:18:53,021 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 89 [2024-11-28 03:18:53,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:18:53,035 INFO L225 Difference]: With dead ends: 340 [2024-11-28 03:18:53,036 INFO L226 Difference]: Without dead ends: 167 [2024-11-28 03:18:53,044 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 90 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 03:18:53,049 INFO L435 NwaCegarLoop]: 233 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, 233 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 03:18:53,050 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:18:53,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-11-28 03:18:53,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2024-11-28 03:18:53,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 100 states have (on average 1.19) internal successors, (119), 101 states have internal predecessors, (119), 55 states have call successors, (55), 11 states have call predecessors, (55), 11 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-28 03:18:53,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 228 transitions. [2024-11-28 03:18:53,133 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 228 transitions. Word has length 89 [2024-11-28 03:18:53,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:18:53,135 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 228 transitions. [2024-11-28 03:18:53,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-28 03:18:53,136 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 228 transitions. [2024-11-28 03:18:53,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-28 03:18:53,142 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:18:53,143 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 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] [2024-11-28 03:18:53,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef728fe-8a7f-4a89-a017-cbe36dd127f6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 03:18:53,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef728fe-8a7f-4a89-a017-cbe36dd127f6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-28 03:18:53,345 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:18:53,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:18:53,346 INFO L85 PathProgramCache]: Analyzing trace with hash 2098865434, now seen corresponding path program 1 times [2024-11-28 03:18:53,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:18:53,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549100353] [2024-11-28 03:18:53,346 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:18:53,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:20:18,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:20:21,242 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-28 03:20:21,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:20:21,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549100353] [2024-11-28 03:20:21,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549100353] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:20:21,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374098587] [2024-11-28 03:20:21,243 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:20:21,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:20:21,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef728fe-8a7f-4a89-a017-cbe36dd127f6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:20:21,247 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef728fe-8a7f-4a89-a017-cbe36dd127f6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:20:21,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef728fe-8a7f-4a89-a017-cbe36dd127f6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:21:49,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:21:49,072 INFO L256 TraceCheckSpWp]: Trace formula consists of 7835 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:21:49,087 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:21:49,637 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-28 03:21:49,637 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:21:49,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374098587] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:21:49,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:21:49,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2024-11-28 03:21:49,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044718443] [2024-11-28 03:21:49,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:21:49,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:21:49,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:21:49,640 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:21:49,640 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:21:49,640 INFO L87 Difference]: Start difference. First operand 167 states and 228 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-28 03:21:51,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:21:51,369 INFO L93 Difference]: Finished difference Result 330 states and 458 transitions. [2024-11-28 03:21:51,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:21:51,370 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 94 [2024-11-28 03:21:51,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:21:51,374 INFO L225 Difference]: With dead ends: 330 [2024-11-28 03:21:51,375 INFO L226 Difference]: Without dead ends: 170 [2024-11-28 03:21:51,376 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:21:51,377 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 233 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:21:51,377 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 446 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-28 03:21:51,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-11-28 03:21:51,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2024-11-28 03:21:51,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 102 states have (on average 1.1862745098039216) internal successors, (121), 104 states have internal predecessors, (121), 55 states have call successors, (55), 11 states have call predecessors, (55), 12 states have return successors, (63), 54 states have call predecessors, (63), 54 states have call successors, (63) [2024-11-28 03:21:51,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 239 transitions. [2024-11-28 03:21:51,404 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 239 transitions. Word has length 94 [2024-11-28 03:21:51,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:21:51,404 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 239 transitions. [2024-11-28 03:21:51,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-28 03:21:51,405 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 239 transitions. [2024-11-28 03:21:51,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-28 03:21:51,408 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:21:51,408 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 3, 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] [2024-11-28 03:21:51,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef728fe-8a7f-4a89-a017-cbe36dd127f6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 03:21:51,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef728fe-8a7f-4a89-a017-cbe36dd127f6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:21:51,609 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:21:51,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:21:51,609 INFO L85 PathProgramCache]: Analyzing trace with hash -2038488081, now seen corresponding path program 1 times [2024-11-28 03:21:51,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:21:51,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287655804] [2024-11-28 03:21:51,610 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:21:51,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:23:15,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:23:18,276 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-28 03:23:18,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:23:18,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287655804] [2024-11-28 03:23:18,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287655804] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:23:18,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431967795] [2024-11-28 03:23:18,277 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:23:18,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:23:18,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef728fe-8a7f-4a89-a017-cbe36dd127f6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:23:18,280 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef728fe-8a7f-4a89-a017-cbe36dd127f6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:23:18,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef728fe-8a7f-4a89-a017-cbe36dd127f6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:24:45,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:24:45,227 INFO L256 TraceCheckSpWp]: Trace formula consists of 7852 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:24:45,233 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:24:45,986 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-28 03:24:45,986 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:24:45,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431967795] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:24:45,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:24:45,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2024-11-28 03:24:45,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504124458] [2024-11-28 03:24:45,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:24:45,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:24:45,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:24:45,988 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:24:45,989 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:24:45,989 INFO L87 Difference]: Start difference. First operand 170 states and 239 transitions. Second operand has 7 states, 6 states have (on average 8.5) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-28 03:24:48,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:24:48,713 INFO L93 Difference]: Finished difference Result 291 states and 412 transitions. [2024-11-28 03:24:48,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:24:48,714 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.5) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 100 [2024-11-28 03:24:48,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:24:48,717 INFO L225 Difference]: With dead ends: 291 [2024-11-28 03:24:48,717 INFO L226 Difference]: Without dead ends: 170 [2024-11-28 03:24:48,718 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:24:48,719 INFO L435 NwaCegarLoop]: 165 mSDtfsCounter, 242 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:24:48,719 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 748 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-28 03:24:48,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-11-28 03:24:48,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2024-11-28 03:24:48,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 102 states have (on average 1.1862745098039216) internal successors, (121), 104 states have internal predecessors, (121), 55 states have call successors, (55), 11 states have call predecessors, (55), 12 states have return successors, (60), 54 states have call predecessors, (60), 54 states have call successors, (60) [2024-11-28 03:24:48,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 236 transitions. [2024-11-28 03:24:48,740 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 236 transitions. Word has length 100 [2024-11-28 03:24:48,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:24:48,741 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 236 transitions. [2024-11-28 03:24:48,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.5) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-28 03:24:48,741 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 236 transitions. [2024-11-28 03:24:48,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-28 03:24:48,744 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:24:48,745 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 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] [2024-11-28 03:24:48,771 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef728fe-8a7f-4a89-a017-cbe36dd127f6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 03:24:48,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef728fe-8a7f-4a89-a017-cbe36dd127f6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:24:48,945 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:24:48,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:24:48,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1077153148, now seen corresponding path program 2 times [2024-11-28 03:24:48,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:24:48,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024772454] [2024-11-28 03:24:48,946 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:24:48,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:26:16,131 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 03:26:16,131 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:26:17,991 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-11-28 03:26:17,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:26:17,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024772454] [2024-11-28 03:26:17,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024772454] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:26:17,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:26:17,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:26:17,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616513672] [2024-11-28 03:26:17,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:26:17,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:26:17,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:26:17,994 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:26:17,994 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:26:17,994 INFO L87 Difference]: Start difference. First operand 170 states and 236 transitions. Second operand has 5 states, 4 states have (on average 11.25) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 03:26:18,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:26:18,313 INFO L93 Difference]: Finished difference Result 255 states and 356 transitions. [2024-11-28 03:26:18,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:26:18,313 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.25) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 106 [2024-11-28 03:26:18,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:26:18,316 INFO L225 Difference]: With dead ends: 255 [2024-11-28 03:26:18,316 INFO L226 Difference]: Without dead ends: 170 [2024-11-28 03:26:18,317 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:26:18,318 INFO L435 NwaCegarLoop]: 220 mSDtfsCounter, 0 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:26:18,319 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 641 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:26:18,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-11-28 03:26:18,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2024-11-28 03:26:18,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 102 states have (on average 1.1862745098039216) internal successors, (121), 104 states have internal predecessors, (121), 55 states have call successors, (55), 11 states have call predecessors, (55), 12 states have return successors, (59), 54 states have call predecessors, (59), 54 states have call successors, (59) [2024-11-28 03:26:18,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 235 transitions. [2024-11-28 03:26:18,338 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 235 transitions. Word has length 106 [2024-11-28 03:26:18,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:26:18,338 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 235 transitions. [2024-11-28 03:26:18,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.25) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 03:26:18,339 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 235 transitions. [2024-11-28 03:26:18,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-28 03:26:18,341 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:26:18,341 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-28 03:26:18,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 03:26:18,341 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:26:18,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:18,342 INFO L85 PathProgramCache]: Analyzing trace with hash 989252751, now seen corresponding path program 3 times [2024-11-28 03:26:18,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:26:18,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321003069] [2024-11-28 03:26:18,342 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:26:18,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:27:56,137 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-28 03:27:56,137 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:28:01,875 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-11-28 03:28:01,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:28:01,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321003069] [2024-11-28 03:28:01,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321003069] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:28:01,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024271649] [2024-11-28 03:28:01,876 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:28:01,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:01,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef728fe-8a7f-4a89-a017-cbe36dd127f6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:28:01,878 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef728fe-8a7f-4a89-a017-cbe36dd127f6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:28:01,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ef728fe-8a7f-4a89-a017-cbe36dd127f6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process