./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_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_de9a23b4-a4fe-433f-bc29-38c3bae5706b/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de9a23b4-a4fe-433f-bc29-38c3bae5706b/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_de9a23b4-a4fe-433f-bc29-38c3bae5706b/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de9a23b4-a4fe-433f-bc29-38c3bae5706b/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de9a23b4-a4fe-433f-bc29-38c3bae5706b/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_de9a23b4-a4fe-433f-bc29-38c3bae5706b/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 159e2e7d83d3b6b4cf1f3ed2869e7b3577187883e3957f87f67106f5f6570745 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:18:37,334 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:18:37,413 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de9a23b4-a4fe-433f-bc29-38c3bae5706b/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-28 02:18:37,422 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:18:37,422 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:18:37,480 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:18:37,482 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:18:37,482 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:18:37,483 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:18:37,483 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:18:37,484 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:18:37,484 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:18:37,485 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:18:37,485 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:18:37,485 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:18:37,485 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:18:37,487 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:18:37,487 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:18:37,488 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:18:37,488 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:18:37,488 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:18:37,488 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:18:37,488 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:18:37,488 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:18:37,489 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:18:37,489 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:18:37,489 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:18:37,489 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:18:37,489 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:18:37,489 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:18:37,490 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:18:37,490 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:18:37,490 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:18:37,490 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:18:37,490 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:18:37,490 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:18:37,490 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:18:37,490 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:18:37,490 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:18:37,491 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:18:37,491 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:18:37,491 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:18:37,491 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:18:37,491 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:18:37,491 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:18:37,491 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_de9a23b4-a4fe-433f-bc29-38c3bae5706b/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 -> 159e2e7d83d3b6b4cf1f3ed2869e7b3577187883e3957f87f67106f5f6570745 [2024-11-28 02:18:37,865 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:18:37,879 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:18:37,882 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:18:37,883 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:18:37,884 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:18:37,887 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de9a23b4-a4fe-433f-bc29-38c3bae5706b/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness_negated.i [2024-11-28 02:18:41,514 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de9a23b4-a4fe-433f-bc29-38c3bae5706b/bin/uautomizer-verify-aQ6SnzHsRB/data/5be7231e5/f0f85fe2c0a24f619e7cd5a33251f647/FLAG596a3b59a [2024-11-28 02:18:42,295 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:18:42,296 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de9a23b4-a4fe-433f-bc29-38c3bae5706b/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness_negated.i [2024-11-28 02:18:42,350 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de9a23b4-a4fe-433f-bc29-38c3bae5706b/bin/uautomizer-verify-aQ6SnzHsRB/data/5be7231e5/f0f85fe2c0a24f619e7cd5a33251f647/FLAG596a3b59a [2024-11-28 02:18:42,380 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de9a23b4-a4fe-433f-bc29-38c3bae5706b/bin/uautomizer-verify-aQ6SnzHsRB/data/5be7231e5/f0f85fe2c0a24f619e7cd5a33251f647 [2024-11-28 02:18:42,383 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:18:42,384 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:18:42,386 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:18:42,386 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:18:42,392 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:18:42,393 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:18:42" (1/1) ... [2024-11-28 02:18:42,394 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3eeb7f67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:18:42, skipping insertion in model container [2024-11-28 02:18:42,394 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:18:42" (1/1) ... [2024-11-28 02:18:42,554 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:18:42,968 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_de9a23b4-a4fe-433f-bc29-38c3bae5706b/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness_negated.i[4503,4516] [2024-11-28 02:18:42,979 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_de9a23b4-a4fe-433f-bc29-38c3bae5706b/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness_negated.i[4563,4576] [2024-11-28 02:18:44,246 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:18:44,247 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:18:44,248 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:18:44,249 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:18:44,251 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:18:44,277 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:18:44,278 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:18:44,280 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:18:44,281 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:18:45,174 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:18:45,175 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:18:45,306 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:18:45,306 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:18:45,416 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:18:45,564 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:18:45,589 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_de9a23b4-a4fe-433f-bc29-38c3bae5706b/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness_negated.i[4503,4516] [2024-11-28 02:18:45,589 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_de9a23b4-a4fe-433f-bc29-38c3bae5706b/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness_negated.i[4563,4576] [2024-11-28 02:18:45,684 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:18:45,685 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:18:45,685 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:18:45,685 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:18:45,686 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:18:45,706 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:18:45,706 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:18:45,707 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:18:45,708 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:18:45,828 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:18:45,831 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:18:45,907 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8085] [2024-11-28 02:18:45,909 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:18:45,910 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:18:45,933 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8571-8582] [2024-11-28 02:18:45,956 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:18:46,301 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:18:46,302 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:18:46 WrapperNode [2024-11-28 02:18:46,303 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:18:46,304 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:18:46,304 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:18:46,304 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:18:46,314 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:18:46" (1/1) ... [2024-11-28 02:18:46,413 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:18:46" (1/1) ... [2024-11-28 02:18:46,571 INFO L138 Inliner]: procedures = 681, calls = 2499, calls flagged for inlining = 58, calls inlined = 13, statements flattened = 1020 [2024-11-28 02:18:46,571 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:18:46,572 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:18:46,572 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:18:46,572 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:18:46,598 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:18:46" (1/1) ... [2024-11-28 02:18:46,598 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:18:46" (1/1) ... [2024-11-28 02:18:46,617 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:18:46" (1/1) ... [2024-11-28 02:18:46,717 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2024-11-28 02:18:46,717 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:18:46" (1/1) ... [2024-11-28 02:18:46,718 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:18:46" (1/1) ... [2024-11-28 02:18:46,794 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:18:46" (1/1) ... [2024-11-28 02:18:46,798 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:18:46" (1/1) ... [2024-11-28 02:18:46,815 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:18:46" (1/1) ... [2024-11-28 02:18:46,830 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:18:46" (1/1) ... [2024-11-28 02:18:46,842 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:18:46" (1/1) ... [2024-11-28 02:18:46,866 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:18:46,869 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:18:46,869 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:18:46,869 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:18:46,872 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:18:46" (1/1) ... [2024-11-28 02:18:46,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:18:46,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de9a23b4-a4fe-433f-bc29-38c3bae5706b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:18:46,920 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de9a23b4-a4fe-433f-bc29-38c3bae5706b/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:18:46,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de9a23b4-a4fe-433f-bc29-38c3bae5706b/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:18:46,962 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2024-11-28 02:18:46,963 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2024-11-28 02:18:46,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 02:18:46,963 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-28 02:18:46,963 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-28 02:18:46,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-28 02:18:46,963 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-28 02:18:46,963 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2024-11-28 02:18:46,963 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2024-11-28 02:18:46,963 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 02:18:46,964 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 02:18:46,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 02:18:46,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:18:46,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-28 02:18:46,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:18:46,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:18:46,964 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-28 02:18:46,964 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-28 02:18:46,964 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_realloc [2024-11-28 02:18:46,964 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_realloc [2024-11-28 02:18:46,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2024-11-28 02:18:46,965 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2024-11-28 02:18:46,965 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2024-11-28 02:18:46,965 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 02:18:46,965 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 02:18:46,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 02:18:46,965 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2024-11-28 02:18:46,965 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2024-11-28 02:18:46,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-28 02:18:46,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-28 02:18:46,965 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-11-28 02:18:46,965 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-11-28 02:18:46,966 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2024-11-28 02:18:46,966 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2024-11-28 02:18:46,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-28 02:18:46,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-28 02:18:47,389 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:18:47,392 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:18:58,102 INFO L? ?]: Removed 127 outVars from TransFormulas that were not future-live. [2024-11-28 02:18:58,102 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:18:58,130 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:18:58,130 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-28 02:18:58,130 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:18:58 BoogieIcfgContainer [2024-11-28 02:18:58,131 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:18:58,136 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:18:58,136 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:18:58,144 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:18:58,144 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:18:42" (1/3) ... [2024-11-28 02:18:58,145 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e82848a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:18:58, skipping insertion in model container [2024-11-28 02:18:58,145 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:18:46" (2/3) ... [2024-11-28 02:18:58,146 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e82848a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:18:58, skipping insertion in model container [2024-11-28 02:18:58,146 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:18:58" (3/3) ... [2024-11-28 02:18:58,148 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_reserve_relative_harness_negated.i [2024-11-28 02:18:58,167 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:18:58,169 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_byte_buf_reserve_relative_harness_negated.i that has 12 procedures, 161 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2024-11-28 02:18:58,275 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:18:58,294 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;@74f6648e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:18:58,294 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:18:58,301 INFO L276 IsEmpty]: Start isEmpty. Operand has 161 states, 112 states have (on average 1.3125) internal successors, (147), 111 states have internal predecessors, (147), 38 states have call successors, (38), 11 states have call predecessors, (38), 11 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-28 02:18:58,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-28 02:18:58,315 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:18:58,316 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 02:18:58,317 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:18:58,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:18:58,325 INFO L85 PathProgramCache]: Analyzing trace with hash -54689526, now seen corresponding path program 1 times [2024-11-28 02:18:58,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:18:58,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247105634] [2024-11-28 02:18:58,336 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:18:58,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:20:55,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:20:56,905 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:20:56,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:20:56,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247105634] [2024-11-28 02:20:56,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247105634] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:20:56,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112152580] [2024-11-28 02:20:56,909 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:20:56,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:20:56,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de9a23b4-a4fe-433f-bc29-38c3bae5706b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:20:56,913 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de9a23b4-a4fe-433f-bc29-38c3bae5706b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:20:56,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de9a23b4-a4fe-433f-bc29-38c3bae5706b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:22:46,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:46,963 INFO L256 TraceCheckSpWp]: Trace formula consists of 7527 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 02:22:46,980 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:22:47,002 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:22:47,002 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:22:47,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112152580] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:22:47,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:22:47,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 02:22:47,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688500731] [2024-11-28 02:22:47,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:22:47,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 02:22:47,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:22:47,041 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 02:22:47,042 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:22:47,046 INFO L87 Difference]: Start difference. First operand has 161 states, 112 states have (on average 1.3125) internal successors, (147), 111 states have internal predecessors, (147), 38 states have call successors, (38), 11 states have call predecessors, (38), 11 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-28 02:22:47,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:22:47,116 INFO L93 Difference]: Finished difference Result 312 states and 447 transitions. [2024-11-28 02:22:47,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 02:22:47,121 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 47 [2024-11-28 02:22:47,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:22:47,134 INFO L225 Difference]: With dead ends: 312 [2024-11-28 02:22:47,135 INFO L226 Difference]: Without dead ends: 156 [2024-11-28 02:22:47,140 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 48 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 02:22:47,144 INFO L435 NwaCegarLoop]: 213 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, 213 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 02:22:47,145 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:22:47,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2024-11-28 02:22:47,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2024-11-28 02:22:47,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 106 states have (on average 1.2547169811320755) internal successors, (133), 107 states have internal predecessors, (133), 38 states have call successors, (38), 11 states have call predecessors, (38), 11 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-11-28 02:22:47,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 208 transitions. [2024-11-28 02:22:47,217 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 208 transitions. Word has length 47 [2024-11-28 02:22:47,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:22:47,219 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 208 transitions. [2024-11-28 02:22:47,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-28 02:22:47,219 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 208 transitions. [2024-11-28 02:22:47,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-28 02:22:47,222 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:22:47,222 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 02:22:47,242 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de9a23b4-a4fe-433f-bc29-38c3bae5706b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:22:47,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de9a23b4-a4fe-433f-bc29-38c3bae5706b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-28 02:22:47,425 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:22:47,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:22:47,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1707328526, now seen corresponding path program 1 times [2024-11-28 02:22:47,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:22:47,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668438182] [2024-11-28 02:22:47,426 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:47,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:24:35,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:24:39,678 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 02:24:39,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:24:39,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668438182] [2024-11-28 02:24:39,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668438182] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:24:39,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:24:39,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:24:39,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556877181] [2024-11-28 02:24:39,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:24:39,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:24:39,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:24:39,681 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:24:39,683 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:24:39,683 INFO L87 Difference]: Start difference. First operand 156 states and 208 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-28 02:24:40,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:24:40,389 INFO L93 Difference]: Finished difference Result 299 states and 405 transitions. [2024-11-28 02:24:40,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:24:40,393 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 47 [2024-11-28 02:24:40,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:24:40,400 INFO L225 Difference]: With dead ends: 299 [2024-11-28 02:24:40,400 INFO L226 Difference]: Without dead ends: 159 [2024-11-28 02:24:40,406 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 02:24:40,407 INFO L435 NwaCegarLoop]: 196 mSDtfsCounter, 56 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:24:40,408 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 683 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 02:24:40,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-11-28 02:24:40,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2024-11-28 02:24:40,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 108 states have (on average 1.25) internal successors, (135), 110 states have internal predecessors, (135), 38 states have call successors, (38), 11 states have call predecessors, (38), 12 states have return successors, (43), 37 states have call predecessors, (43), 37 states have call successors, (43) [2024-11-28 02:24:40,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 216 transitions. [2024-11-28 02:24:40,451 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 216 transitions. Word has length 47 [2024-11-28 02:24:40,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:24:40,452 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 216 transitions. [2024-11-28 02:24:40,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-28 02:24:40,452 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 216 transitions. [2024-11-28 02:24:40,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-28 02:24:40,454 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:24:40,454 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 02:24:40,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:24:40,456 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:24:40,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:24:40,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1093933987, now seen corresponding path program 1 times [2024-11-28 02:24:40,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:24:40,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942516716] [2024-11-28 02:24:40,459 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:24:40,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:26:37,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:26:39,872 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 02:26:39,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:26:39,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942516716] [2024-11-28 02:26:39,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942516716] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:26:39,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:26:39,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:26:39,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875892795] [2024-11-28 02:26:39,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:26:39,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:26:39,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:26:39,874 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:26:39,874 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:26:39,874 INFO L87 Difference]: Start difference. First operand 159 states and 216 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-28 02:26:40,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:26:40,074 INFO L93 Difference]: Finished difference Result 199 states and 264 transitions. [2024-11-28 02:26:40,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:26:40,075 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 53 [2024-11-28 02:26:40,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:26:40,077 INFO L225 Difference]: With dead ends: 199 [2024-11-28 02:26:40,077 INFO L226 Difference]: Without dead ends: 161 [2024-11-28 02:26:40,078 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:26:40,079 INFO L435 NwaCegarLoop]: 205 mSDtfsCounter, 0 mSDsluCounter, 810 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1015 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:26:40,080 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1015 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:26:40,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-11-28 02:26:40,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2024-11-28 02:26:40,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 110 states have (on average 1.2454545454545454) internal successors, (137), 112 states have internal predecessors, (137), 38 states have call successors, (38), 11 states have call predecessors, (38), 12 states have return successors, (43), 37 states have call predecessors, (43), 37 states have call successors, (43) [2024-11-28 02:26:40,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 218 transitions. [2024-11-28 02:26:40,099 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 218 transitions. Word has length 53 [2024-11-28 02:26:40,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:26:40,100 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 218 transitions. [2024-11-28 02:26:40,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-28 02:26:40,100 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 218 transitions. [2024-11-28 02:26:40,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-28 02:26:40,102 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:26:40,103 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 02:26:40,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:26:40,103 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:26:40,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:26:40,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1771110635, now seen corresponding path program 1 times [2024-11-28 02:26:40,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:26:40,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811448946] [2024-11-28 02:26:40,104 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:26:40,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:28:49,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:28:53,052 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 02:28:53,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:28:53,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811448946] [2024-11-28 02:28:53,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811448946] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:28:53,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:28:53,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:28:53,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071805555] [2024-11-28 02:28:53,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:28:53,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:28:53,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:28:53,054 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:28:53,055 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:28:53,055 INFO L87 Difference]: Start difference. First operand 161 states and 218 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-28 02:28:54,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:28:54,067 INFO L93 Difference]: Finished difference Result 298 states and 402 transitions. [2024-11-28 02:28:54,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:28:54,068 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), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 61 [2024-11-28 02:28:54,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:28:54,071 INFO L225 Difference]: With dead ends: 298 [2024-11-28 02:28:54,072 INFO L226 Difference]: Without dead ends: 162 [2024-11-28 02:28:54,073 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:28:54,074 INFO L435 NwaCegarLoop]: 195 mSDtfsCounter, 52 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 836 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:28:54,075 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 836 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 02:28:54,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-11-28 02:28:54,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 161. [2024-11-28 02:28:54,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 110 states have (on average 1.2454545454545454) internal successors, (137), 112 states have internal predecessors, (137), 38 states have call successors, (38), 11 states have call predecessors, (38), 12 states have return successors, (41), 37 states have call predecessors, (41), 37 states have call successors, (41) [2024-11-28 02:28:54,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 216 transitions. [2024-11-28 02:28:54,099 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 216 transitions. Word has length 61 [2024-11-28 02:28:54,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:28:54,100 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 216 transitions. [2024-11-28 02:28:54,100 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), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-28 02:28:54,101 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 216 transitions. [2024-11-28 02:28:54,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-28 02:28:54,104 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:28:54,104 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:28:54,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:28:54,105 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:28:54,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:28:54,105 INFO L85 PathProgramCache]: Analyzing trace with hash -203466431, now seen corresponding path program 1 times [2024-11-28 02:28:54,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:28:54,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266059301] [2024-11-28 02:28:54,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:28:54,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:31:09,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:31:22,607 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 02:31:22,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:31:22,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266059301] [2024-11-28 02:31:22,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266059301] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:31:22,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438689501] [2024-11-28 02:31:22,607 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:31:22,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:31:22,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de9a23b4-a4fe-433f-bc29-38c3bae5706b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:31:22,610 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de9a23b4-a4fe-433f-bc29-38c3bae5706b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:31:22,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de9a23b4-a4fe-433f-bc29-38c3bae5706b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:32:57,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:32:57,114 INFO L256 TraceCheckSpWp]: Trace formula consists of 7573 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-28 02:32:57,125 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:32:57,425 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 02:32:58,910 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:32:58,910 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:32:58,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438689501] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:32:58,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:32:58,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 15 [2024-11-28 02:32:58,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974942288] [2024-11-28 02:32:58,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:32:58,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 02:32:58,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:32:58,913 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 02:32:58,913 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:32:58,913 INFO L87 Difference]: Start difference. First operand 161 states and 216 transitions. Second operand has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 9 states have internal predecessors, (50), 4 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-28 02:33:03,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:33:07,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.46s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:33:12,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.49s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:33:16,575 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.53s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:33:21,100 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.52s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:33:25,571 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.47s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers []