./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_u8_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_716ace51-b8d9-4315-9d31-ac678f38c0f8/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_716ace51-b8d9-4315-9d31-ac678f38c0f8/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_716ace51-b8d9-4315-9d31-ac678f38c0f8/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_716ace51-b8d9-4315-9d31-ac678f38c0f8/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_u8_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_716ace51-b8d9-4315-9d31-ac678f38c0f8/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_716ace51-b8d9-4315-9d31-ac678f38c0f8/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 fbd83f7e524270f26b355be3b6fdf116e3fc11da746439b12c865fa2fec80a91 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:27:56,198 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:27:56,269 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_716ace51-b8d9-4315-9d31-ac678f38c0f8/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-27 23:27:56,275 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:27:56,275 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:27:56,324 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:27:56,324 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:27:56,324 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:27:56,327 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:27:56,327 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:27:56,328 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:27:56,328 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:27:56,329 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:27:56,329 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:27:56,330 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:27:56,330 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:27:56,330 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 23:27:56,331 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:27:56,331 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:27:56,331 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 23:27:56,331 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:27:56,331 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 23:27:56,331 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 23:27:56,331 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:27:56,331 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:27:56,332 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:27:56,332 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:27:56,332 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:27:56,332 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:27:56,332 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:27:56,333 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:27:56,333 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:27:56,333 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:27:56,333 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:27:56,333 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:27:56,334 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:27:56,334 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:27:56,334 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 23:27:56,334 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 23:27:56,334 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 23:27:56,334 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 23:27:56,334 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:27:56,334 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:27:56,335 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:27:56,335 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:27:56,335 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_716ace51-b8d9-4315-9d31-ac678f38c0f8/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 -> fbd83f7e524270f26b355be3b6fdf116e3fc11da746439b12c865fa2fec80a91 [2024-11-27 23:27:56,681 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:27:56,696 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:27:56,698 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:27:56,700 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:27:56,700 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:27:56,703 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_716ace51-b8d9-4315-9d31-ac678f38c0f8/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_u8_harness_negated.i [2024-11-27 23:27:59,776 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_716ace51-b8d9-4315-9d31-ac678f38c0f8/bin/uautomizer-verify-aQ6SnzHsRB/data/af3306b49/e45ccfc2d1b148109f904a2b4bb3a05c/FLAGbb9fb4096 [2024-11-27 23:28:00,458 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:28:00,459 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_716ace51-b8d9-4315-9d31-ac678f38c0f8/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_u8_harness_negated.i [2024-11-27 23:28:00,500 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_716ace51-b8d9-4315-9d31-ac678f38c0f8/bin/uautomizer-verify-aQ6SnzHsRB/data/af3306b49/e45ccfc2d1b148109f904a2b4bb3a05c/FLAGbb9fb4096 [2024-11-27 23:28:00,517 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_716ace51-b8d9-4315-9d31-ac678f38c0f8/bin/uautomizer-verify-aQ6SnzHsRB/data/af3306b49/e45ccfc2d1b148109f904a2b4bb3a05c [2024-11-27 23:28:00,519 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:28:00,521 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:28:00,523 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:28:00,523 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:28:00,528 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:28:00,529 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:28:00" (1/1) ... [2024-11-27 23:28:00,530 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b9c3ce9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:28:00, skipping insertion in model container [2024-11-27 23:28:00,530 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:28:00" (1/1) ... [2024-11-27 23:28:00,641 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:28:00,980 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_716ace51-b8d9-4315-9d31-ac678f38c0f8/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_u8_harness_negated.i[4495,4508] [2024-11-27 23:28:00,989 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_716ace51-b8d9-4315-9d31-ac678f38c0f8/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_u8_harness_negated.i[4555,4568] [2024-11-27 23:28:02,157 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 23:28:02,158 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 23:28:02,159 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 23:28:02,160 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 23:28:02,161 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 23:28:02,179 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 23:28:02,180 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 23:28:02,183 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 23:28:02,183 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 23:28:03,175 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 23:28:03,176 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 23:28:03,275 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:28:03,371 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 23:28:03,386 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_716ace51-b8d9-4315-9d31-ac678f38c0f8/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_u8_harness_negated.i[4495,4508] [2024-11-27 23:28:03,387 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_716ace51-b8d9-4315-9d31-ac678f38c0f8/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_u8_harness_negated.i[4555,4568] [2024-11-27 23:28:03,455 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 23:28:03,458 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 23:28:03,458 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 23:28:03,459 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 23:28:03,460 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 23:28:03,475 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 23:28:03,475 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 23:28:03,477 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 23:28:03,479 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 23:28:03,661 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8259] [2024-11-27 23:28:03,663 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 23:28:03,664 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 23:28:03,683 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8745-8756] [2024-11-27 23:28:03,715 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:28:03,961 INFO L204 MainTranslator]: Completed translation [2024-11-27 23:28:03,962 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:28:03 WrapperNode [2024-11-27 23:28:03,962 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:28:03,963 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 23:28:03,963 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 23:28:03,964 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 23:28:03,975 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:28:03" (1/1) ... [2024-11-27 23:28:04,071 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:28:03" (1/1) ... [2024-11-27 23:28:04,140 INFO L138 Inliner]: procedures = 680, calls = 2618, calls flagged for inlining = 63, calls inlined = 10, statements flattened = 871 [2024-11-27 23:28:04,141 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 23:28:04,142 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 23:28:04,142 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 23:28:04,142 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 23:28:04,157 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:28:03" (1/1) ... [2024-11-27 23:28:04,157 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:28:03" (1/1) ... [2024-11-27 23:28:04,177 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:28:03" (1/1) ... [2024-11-27 23:28:04,287 INFO L175 MemorySlicer]: Split 560 memory accesses to 7 slices as follows [2, 2, 257, 238, 47, 6, 8]. 46 percent of accesses are in the largest equivalence class. The 21 initializations are split as follows [2, 0, 0, 6, 8, 0, 5]. The 496 writes are split as follows [0, 1, 257, 232, 3, 2, 1]. [2024-11-27 23:28:04,287 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:28:03" (1/1) ... [2024-11-27 23:28:04,291 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:28:03" (1/1) ... [2024-11-27 23:28:04,356 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:28:03" (1/1) ... [2024-11-27 23:28:04,361 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:28:03" (1/1) ... [2024-11-27 23:28:04,372 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:28:03" (1/1) ... [2024-11-27 23:28:04,388 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:28:03" (1/1) ... [2024-11-27 23:28:04,396 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:28:03" (1/1) ... [2024-11-27 23:28:04,423 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 23:28:04,424 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 23:28:04,424 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 23:28:04,424 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 23:28:04,425 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:28:03" (1/1) ... [2024-11-27 23:28:04,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:28:04,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_716ace51-b8d9-4315-9d31-ac678f38c0f8/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:28:04,467 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_716ace51-b8d9-4315-9d31-ac678f38c0f8/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 23:28:04,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_716ace51-b8d9-4315-9d31-ac678f38c0f8/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 23:28:04,497 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2024-11-27 23:28:04,498 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2024-11-27 23:28:04,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-27 23:28:04,498 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-27 23:28:04,498 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-27 23:28:04,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-27 23:28:04,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-27 23:28:04,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-27 23:28:04,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-27 23:28:04,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-27 23:28:04,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-27 23:28:04,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2024-11-27 23:28:04,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-27 23:28:04,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-27 23:28:04,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-27 23:28:04,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-27 23:28:04,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-27 23:28:04,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-27 23:28:04,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-27 23:28:04,500 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-27 23:28:04,500 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-27 23:28:04,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-27 23:28:04,501 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 23:28:04,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-27 23:28:04,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-27 23:28:04,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-27 23:28:04,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-27 23:28:04,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-27 23:28:04,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-27 23:28:04,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-27 23:28:04,502 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2024-11-27 23:28:04,502 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2024-11-27 23:28:04,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 23:28:04,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 23:28:04,502 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-27 23:28:04,502 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-27 23:28:04,502 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2024-11-27 23:28:04,502 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2024-11-27 23:28:04,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-27 23:28:04,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-27 23:28:04,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-27 23:28:04,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-27 23:28:04,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-27 23:28:04,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-11-27 23:28:04,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2024-11-27 23:28:04,503 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-27 23:28:04,503 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-27 23:28:04,503 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2024-11-27 23:28:04,504 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2024-11-27 23:28:04,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-27 23:28:04,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-27 23:28:04,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-27 23:28:04,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-27 23:28:04,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-27 23:28:04,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-27 23:28:04,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-27 23:28:04,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-27 23:28:04,505 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_write [2024-11-27 23:28:04,505 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_write [2024-11-27 23:28:04,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-27 23:28:04,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-27 23:28:04,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-27 23:28:04,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-27 23:28:04,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-27 23:28:04,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-27 23:28:04,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-27 23:28:04,506 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-11-27 23:28:04,506 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-11-27 23:28:04,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-27 23:28:04,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-27 23:28:04,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-27 23:28:04,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-27 23:28:04,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-27 23:28:04,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-27 23:28:04,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-27 23:28:04,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 23:28:04,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-27 23:28:04,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-27 23:28:04,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-27 23:28:04,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-27 23:28:04,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-27 23:28:04,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-27 23:28:04,942 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 23:28:04,944 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 23:28:14,565 INFO L? ?]: Removed 103 outVars from TransFormulas that were not future-live. [2024-11-27 23:28:14,565 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 23:28:14,587 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 23:28:14,587 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-27 23:28:14,588 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:28:14 BoogieIcfgContainer [2024-11-27 23:28:14,588 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 23:28:14,590 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 23:28:14,590 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 23:28:14,623 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 23:28:14,624 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:28:00" (1/3) ... [2024-11-27 23:28:14,624 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34f56fee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:28:14, skipping insertion in model container [2024-11-27 23:28:14,624 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:28:03" (2/3) ... [2024-11-27 23:28:14,625 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34f56fee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:28:14, skipping insertion in model container [2024-11-27 23:28:14,625 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:28:14" (3/3) ... [2024-11-27 23:28:14,626 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_u8_harness_negated.i [2024-11-27 23:28:14,644 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 23:28:14,646 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_byte_buf_write_u8_harness_negated.i that has 11 procedures, 132 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-27 23:28:14,712 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:28:14,726 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;@705ec8e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:28:14,726 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 23:28:14,732 INFO L276 IsEmpty]: Start isEmpty. Operand has 132 states, 86 states have (on average 1.2325581395348837) internal successors, (106), 87 states have internal predecessors, (106), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-27 23:28:14,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-27 23:28:14,743 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:28:14,744 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:28:14,744 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:28:14,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:28:14,750 INFO L85 PathProgramCache]: Analyzing trace with hash -276254992, now seen corresponding path program 1 times [2024-11-27 23:28:14,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:28:14,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907758613] [2024-11-27 23:28:14,759 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:28:14,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:29:42,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:29:43,209 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-27 23:29:43,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:29:43,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907758613] [2024-11-27 23:29:43,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907758613] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:29:43,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038037799] [2024-11-27 23:29:43,213 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:29:43,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:43,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_716ace51-b8d9-4315-9d31-ac678f38c0f8/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:29:43,220 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_716ace51-b8d9-4315-9d31-ac678f38c0f8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:29:43,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_716ace51-b8d9-4315-9d31-ac678f38c0f8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 23:31:13,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:13,918 INFO L256 TraceCheckSpWp]: Trace formula consists of 7696 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-27 23:31:13,932 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:31:13,950 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-27 23:31:13,950 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:31:13,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038037799] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:31:13,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:31:13,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-27 23:31:13,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547969092] [2024-11-27 23:31:13,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:31:13,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 23:31:13,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:31:13,979 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 23:31:13,979 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 23:31:13,981 INFO L87 Difference]: Start difference. First operand has 132 states, 86 states have (on average 1.2325581395348837) internal successors, (106), 87 states have internal predecessors, (106), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-27 23:31:14,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:31:14,031 INFO L93 Difference]: Finished difference Result 259 states and 368 transitions. [2024-11-27 23:31:14,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 23:31:14,034 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 86 [2024-11-27 23:31:14,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:31:14,046 INFO L225 Difference]: With dead ends: 259 [2024-11-27 23:31:14,046 INFO L226 Difference]: Without dead ends: 127 [2024-11-27 23:31:14,051 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 23:31:14,054 INFO L435 NwaCegarLoop]: 171 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, 171 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 [2024-11-27 23:31:14,055 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:31:14,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-27 23:31:14,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2024-11-27 23:31:14,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 82 states have (on average 1.2073170731707317) internal successors, (99), 83 states have internal predecessors, (99), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2024-11-27 23:31:14,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 166 transitions. [2024-11-27 23:31:14,102 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 166 transitions. Word has length 86 [2024-11-27 23:31:14,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:31:14,102 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 166 transitions. [2024-11-27 23:31:14,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-27 23:31:14,102 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 166 transitions. [2024-11-27 23:31:14,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-27 23:31:14,106 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:31:14,106 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:31:14,129 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_716ace51-b8d9-4315-9d31-ac678f38c0f8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 23:31:14,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_716ace51-b8d9-4315-9d31-ac678f38c0f8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:31:14,307 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:31:14,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:14,307 INFO L85 PathProgramCache]: Analyzing trace with hash 466581732, now seen corresponding path program 1 times [2024-11-27 23:31:14,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:31:14,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816427750] [2024-11-27 23:31:14,308 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:14,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:32:39,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:32:43,247 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-27 23:32:43,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:32:43,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816427750] [2024-11-27 23:32:43,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816427750] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:32:43,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726392992] [2024-11-27 23:32:43,248 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:32:43,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:43,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_716ace51-b8d9-4315-9d31-ac678f38c0f8/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:32:43,254 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_716ace51-b8d9-4315-9d31-ac678f38c0f8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:32:43,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_716ace51-b8d9-4315-9d31-ac678f38c0f8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 23:34:22,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:34:22,965 INFO L256 TraceCheckSpWp]: Trace formula consists of 7696 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 23:34:22,978 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:34:23,782 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-27 23:34:23,782 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:34:23,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726392992] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:34:23,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:34:23,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2024-11-27 23:34:23,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428350620] [2024-11-27 23:34:23,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:34:23,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:34:23,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:34:23,786 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:34:23,786 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:34:23,786 INFO L87 Difference]: Start difference. First operand 127 states and 166 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-27 23:34:25,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:34:25,023 INFO L93 Difference]: Finished difference Result 231 states and 310 transitions. [2024-11-27 23:34:25,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:34:25,023 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 86 [2024-11-27 23:34:25,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:34:25,027 INFO L225 Difference]: With dead ends: 231 [2024-11-27 23:34:25,027 INFO L226 Difference]: Without dead ends: 130 [2024-11-27 23:34:25,028 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:34:25,029 INFO L435 NwaCegarLoop]: 132 mSDtfsCounter, 173 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:34:25,029 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 487 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-27 23:34:25,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-11-27 23:34:25,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2024-11-27 23:34:25,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 84 states have (on average 1.2023809523809523) internal successors, (101), 86 states have internal predecessors, (101), 34 states have call successors, (34), 10 states have call predecessors, (34), 11 states have return successors, (37), 33 states have call predecessors, (37), 33 states have call successors, (37) [2024-11-27 23:34:25,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 172 transitions. [2024-11-27 23:34:25,050 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 172 transitions. Word has length 86 [2024-11-27 23:34:25,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:34:25,051 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 172 transitions. [2024-11-27 23:34:25,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-27 23:34:25,051 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 172 transitions. [2024-11-27 23:34:25,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-27 23:34:25,054 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:34:25,055 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:34:25,080 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_716ace51-b8d9-4315-9d31-ac678f38c0f8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 23:34:25,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_716ace51-b8d9-4315-9d31-ac678f38c0f8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-27 23:34:25,255 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:34:25,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:34:25,256 INFO L85 PathProgramCache]: Analyzing trace with hash -609897777, now seen corresponding path program 1 times [2024-11-27 23:34:25,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:34:25,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764868781] [2024-11-27 23:34:25,256 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:34:25,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:35:59,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:36:03,050 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-27 23:36:03,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:36:03,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764868781] [2024-11-27 23:36:03,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764868781] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:36:03,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562439641] [2024-11-27 23:36:03,051 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:36:03,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:36:03,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_716ace51-b8d9-4315-9d31-ac678f38c0f8/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:36:03,056 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_716ace51-b8d9-4315-9d31-ac678f38c0f8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:36:03,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_716ace51-b8d9-4315-9d31-ac678f38c0f8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 23:37:39,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:37:39,324 INFO L256 TraceCheckSpWp]: Trace formula consists of 7713 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-27 23:37:39,330 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:37:40,153 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 23:37:40,154 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:37:40,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562439641] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:37:40,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:37:40,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2024-11-27 23:37:40,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006536240] [2024-11-27 23:37:40,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:37:40,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 23:37:40,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:37:40,158 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 23:37:40,158 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:37:40,159 INFO L87 Difference]: Start difference. First operand 130 states and 172 transitions. Second operand has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-27 23:37:41,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:37:41,445 INFO L93 Difference]: Finished difference Result 226 states and 301 transitions. [2024-11-27 23:37:41,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 23:37:41,446 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 92 [2024-11-27 23:37:41,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:37:41,448 INFO L225 Difference]: With dead ends: 226 [2024-11-27 23:37:41,448 INFO L226 Difference]: Without dead ends: 130 [2024-11-27 23:37:41,453 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-11-27 23:37:41,453 INFO L435 NwaCegarLoop]: 132 mSDtfsCounter, 173 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-27 23:37:41,454 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 491 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-27 23:37:41,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-11-27 23:37:41,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2024-11-27 23:37:41,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 84 states have (on average 1.2023809523809523) internal successors, (101), 86 states have internal predecessors, (101), 34 states have call successors, (34), 10 states have call predecessors, (34), 11 states have return successors, (36), 33 states have call predecessors, (36), 33 states have call successors, (36) [2024-11-27 23:37:41,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 171 transitions. [2024-11-27 23:37:41,486 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 171 transitions. Word has length 92 [2024-11-27 23:37:41,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:37:41,486 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 171 transitions. [2024-11-27 23:37:41,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-27 23:37:41,487 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 171 transitions. [2024-11-27 23:37:41,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-27 23:37:41,489 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:37:41,489 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 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] [2024-11-27 23:37:41,522 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_716ace51-b8d9-4315-9d31-ac678f38c0f8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-27 23:37:41,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_716ace51-b8d9-4315-9d31-ac678f38c0f8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-27 23:37:41,690 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:37:41,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:37:41,690 INFO L85 PathProgramCache]: Analyzing trace with hash -537918726, now seen corresponding path program 2 times [2024-11-27 23:37:41,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:37:41,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972410386] [2024-11-27 23:37:41,690 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:37:41,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:39:14,305 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 23:39:14,305 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:39:21,152 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-11-27 23:39:21,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:39:21,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972410386] [2024-11-27 23:39:21,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972410386] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:39:21,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:39:21,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 23:39:21,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56761556] [2024-11-27 23:39:21,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:39:21,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 23:39:21,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:39:21,155 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 23:39:21,155 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:39:21,155 INFO L87 Difference]: Start difference. First operand 130 states and 171 transitions. Second operand has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-27 23:39:21,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:39:21,557 INFO L93 Difference]: Finished difference Result 138 states and 179 transitions. [2024-11-27 23:39:21,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 23:39:21,558 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 98 [2024-11-27 23:39:21,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:39:21,561 INFO L225 Difference]: With dead ends: 138 [2024-11-27 23:39:21,561 INFO L226 Difference]: Without dead ends: 136 [2024-11-27 23:39:21,561 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:39:21,562 INFO L435 NwaCegarLoop]: 162 mSDtfsCounter, 3 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 957 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:39:21,563 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 957 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 23:39:21,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-11-27 23:39:21,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 135. [2024-11-27 23:39:21,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 87 states have (on average 1.1954022988505748) internal successors, (104), 89 states have internal predecessors, (104), 35 states have call successors, (35), 11 states have call predecessors, (35), 12 states have return successors, (37), 34 states have call predecessors, (37), 34 states have call successors, (37) [2024-11-27 23:39:21,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 176 transitions. [2024-11-27 23:39:21,581 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 176 transitions. Word has length 98 [2024-11-27 23:39:21,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:39:21,582 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 176 transitions. [2024-11-27 23:39:21,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-27 23:39:21,582 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 176 transitions. [2024-11-27 23:39:21,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-27 23:39:21,585 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:39:21,585 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:39:21,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 23:39:21,586 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:39:21,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:39:21,586 INFO L85 PathProgramCache]: Analyzing trace with hash -635814235, now seen corresponding path program 3 times [2024-11-27 23:39:21,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:39:21,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558888232] [2024-11-27 23:39:21,587 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:39:21,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:41:13,366 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-27 23:41:13,366 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:41:18,395 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 28 proven. 4 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-27 23:41:18,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:41:18,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558888232] [2024-11-27 23:41:18,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558888232] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:41:18,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755054040] [2024-11-27 23:41:18,398 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:41:18,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:41:18,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_716ace51-b8d9-4315-9d31-ac678f38c0f8/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:41:18,401 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_716ace51-b8d9-4315-9d31-ac678f38c0f8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:41:18,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_716ace51-b8d9-4315-9d31-ac678f38c0f8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process