./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c106496-95e4-4343-90c5-8e9cb8243ccb/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c106496-95e4-4343-90c5-8e9cb8243ccb/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c106496-95e4-4343-90c5-8e9cb8243ccb/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c106496-95e4-4343-90c5-8e9cb8243ccb/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c106496-95e4-4343-90c5-8e9cb8243ccb/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c106496-95e4-4343-90c5-8e9cb8243ccb/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash abdf5eedefad76d9bd13f7d94286eab9c8ba6966165711daf80a608af314bb9b --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 00:44:06,346 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:44:06,406 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c106496-95e4-4343-90c5-8e9cb8243ccb/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-24 00:44:06,412 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:44:06,412 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:44:06,437 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:44:06,438 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:44:06,438 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:44:06,438 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:44:06,438 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:44:06,438 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:44:06,438 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:44:06,439 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:44:06,439 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:44:06,439 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:44:06,439 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:44:06,439 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 00:44:06,439 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 00:44:06,439 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:44:06,439 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 00:44:06,440 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:44:06,440 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 00:44:06,440 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 00:44:06,440 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:44:06,440 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:44:06,440 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:44:06,440 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:44:06,440 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:44:06,441 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:44:06,441 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:44:06,441 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:44:06,441 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:44:06,441 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:44:06,441 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:44:06,441 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:44:06,441 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:44:06,442 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:44:06,442 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 00:44:06,442 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 00:44:06,442 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 00:44:06,442 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 00:44:06,442 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:44:06,442 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:44:06,442 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:44:06,442 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:44:06,442 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_8c106496-95e4-4343-90c5-8e9cb8243ccb/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> abdf5eedefad76d9bd13f7d94286eab9c8ba6966165711daf80a608af314bb9b [2024-11-24 00:44:06,725 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:44:06,736 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:44:06,739 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:44:06,741 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:44:06,741 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:44:06,744 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c106496-95e4-4343-90c5-8e9cb8243ccb/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i [2024-11-24 00:44:09,660 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c106496-95e4-4343-90c5-8e9cb8243ccb/bin/uautomizer-verify-LYvppIcaGC/data/d79ff6d52/bab5471f3461435b8ec71df59634834f/FLAGecd3ab7bc [2024-11-24 00:44:10,355 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:44:10,356 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c106496-95e4-4343-90c5-8e9cb8243ccb/sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i [2024-11-24 00:44:10,422 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c106496-95e4-4343-90c5-8e9cb8243ccb/bin/uautomizer-verify-LYvppIcaGC/data/d79ff6d52/bab5471f3461435b8ec71df59634834f/FLAGecd3ab7bc [2024-11-24 00:44:10,444 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c106496-95e4-4343-90c5-8e9cb8243ccb/bin/uautomizer-verify-LYvppIcaGC/data/d79ff6d52/bab5471f3461435b8ec71df59634834f [2024-11-24 00:44:10,446 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:44:10,449 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:44:10,451 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:44:10,451 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:44:10,455 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:44:10,456 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:44:10" (1/1) ... [2024-11-24 00:44:10,459 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bbe7bba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:44:10, skipping insertion in model container [2024-11-24 00:44:10,459 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:44:10" (1/1) ... [2024-11-24 00:44:10,583 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:44:10,856 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_8c106496-95e4-4343-90c5-8e9cb8243ccb/sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i[4496,4509] [2024-11-24 00:44:10,863 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_8c106496-95e4-4343-90c5-8e9cb8243ccb/sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i[4556,4569] [2024-11-24 00:44:11,898 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:44:11,899 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:44:11,900 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:44:11,901 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:44:11,902 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:44:11,917 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:44:11,918 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:44:11,920 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:44:11,920 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:44:12,800 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:44:12,801 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:44:12,869 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:44:12,936 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:44:12,957 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_8c106496-95e4-4343-90c5-8e9cb8243ccb/sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i[4496,4509] [2024-11-24 00:44:12,958 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_8c106496-95e4-4343-90c5-8e9cb8243ccb/sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i[4556,4569] [2024-11-24 00:44:13,002 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:44:13,002 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:44:13,003 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:44:13,003 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:44:13,004 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:44:13,011 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:44:13,011 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:44:13,012 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:44:13,013 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:44:13,132 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8291] [2024-11-24 00:44:13,134 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:44:13,135 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:44:13,150 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8777-8788] [2024-11-24 00:44:13,164 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:44:13,460 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:44:13,461 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:44:13 WrapperNode [2024-11-24 00:44:13,462 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:44:13,463 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:44:13,463 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:44:13,463 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:44:13,470 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:44:13" (1/1) ... [2024-11-24 00:44:13,571 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:44:13" (1/1) ... [2024-11-24 00:44:13,674 INFO L138 Inliner]: procedures = 680, calls = 2622, calls flagged for inlining = 63, calls inlined = 11, statements flattened = 945 [2024-11-24 00:44:13,678 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:44:13,678 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:44:13,678 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:44:13,679 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:44:13,688 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:44:13" (1/1) ... [2024-11-24 00:44:13,688 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:44:13" (1/1) ... [2024-11-24 00:44:13,697 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:44:13" (1/1) ... [2024-11-24 00:44:13,817 INFO L175 MemorySlicer]: Split 566 memory accesses to 5 slices as follows [257, 2, 238, 6, 63]. 45 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [0, 2, 6, 0, 9]. The 503 writes are split as follows [257, 0, 232, 2, 12]. [2024-11-24 00:44:13,817 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:44:13" (1/1) ... [2024-11-24 00:44:13,817 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:44:13" (1/1) ... [2024-11-24 00:44:13,894 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:44:13" (1/1) ... [2024-11-24 00:44:13,896 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:44:13" (1/1) ... [2024-11-24 00:44:13,909 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:44:13" (1/1) ... [2024-11-24 00:44:13,925 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:44:13" (1/1) ... [2024-11-24 00:44:13,936 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:44:13" (1/1) ... [2024-11-24 00:44:13,952 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:44:13,957 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:44:13,957 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:44:13,957 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:44:13,958 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:44:13" (1/1) ... [2024-11-24 00:44:13,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:44:13,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c106496-95e4-4343-90c5-8e9cb8243ccb/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:44:13,997 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c106496-95e4-4343-90c5-8e9cb8243ccb/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 00:44:14,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c106496-95e4-4343-90c5-8e9cb8243ccb/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 00:44:14,029 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2024-11-24 00:44:14,030 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2024-11-24 00:44:14,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-24 00:44:14,031 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-24 00:44:14,031 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-24 00:44:14,031 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2024-11-24 00:44:14,031 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2024-11-24 00:44:14,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-24 00:44:14,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-24 00:44:14,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-24 00:44:14,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-24 00:44:14,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-24 00:44:14,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-24 00:44:14,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-24 00:44:14,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-24 00:44:14,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-24 00:44:14,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-24 00:44:14,035 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2024-11-24 00:44:14,035 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2024-11-24 00:44:14,035 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-24 00:44:14,035 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-24 00:44:14,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-24 00:44:14,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 00:44:14,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-24 00:44:14,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-24 00:44:14,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-24 00:44:14,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-24 00:44:14,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-24 00:44:14,035 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2024-11-24 00:44:14,036 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2024-11-24 00:44:14,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:44:14,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:44:14,036 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-24 00:44:14,036 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-24 00:44:14,036 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2024-11-24 00:44:14,036 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2024-11-24 00:44:14,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-24 00:44:14,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-24 00:44:14,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-24 00:44:14,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-24 00:44:14,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-24 00:44:14,036 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2024-11-24 00:44:14,036 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2024-11-24 00:44:14,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-24 00:44:14,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-24 00:44:14,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-24 00:44:14,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#3 [2024-11-24 00:44:14,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#4 [2024-11-24 00:44:14,037 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-24 00:44:14,037 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-24 00:44:14,037 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-24 00:44:14,037 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#3 [2024-11-24 00:44:14,037 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#4 [2024-11-24 00:44:14,037 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-24 00:44:14,037 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-24 00:44:14,037 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2024-11-24 00:44:14,037 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2024-11-24 00:44:14,039 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2024-11-24 00:44:14,039 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2024-11-24 00:44:14,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-24 00:44:14,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-24 00:44:14,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-24 00:44:14,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-24 00:44:14,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-24 00:44:14,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-24 00:44:14,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-24 00:44:14,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-24 00:44:14,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-24 00:44:14,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-24 00:44:14,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-24 00:44:14,042 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-11-24 00:44:14,042 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-11-24 00:44:14,042 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-24 00:44:14,042 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-24 00:44:14,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-24 00:44:14,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-24 00:44:14,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-24 00:44:14,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-24 00:44:14,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-24 00:44:14,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 00:44:14,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-24 00:44:14,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-24 00:44:14,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-24 00:44:14,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-24 00:44:14,476 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:44:14,478 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:44:24,026 INFO L? ?]: Removed 155 outVars from TransFormulas that were not future-live. [2024-11-24 00:44:24,026 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:44:24,048 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:44:24,048 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-24 00:44:24,048 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:44:24 BoogieIcfgContainer [2024-11-24 00:44:24,048 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:44:24,054 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 00:44:24,054 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 00:44:24,060 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 00:44:24,060 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:44:10" (1/3) ... [2024-11-24 00:44:24,061 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@737cc3b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:44:24, skipping insertion in model container [2024-11-24 00:44:24,061 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:44:13" (2/3) ... [2024-11-24 00:44:24,062 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@737cc3b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:44:24, skipping insertion in model container [2024-11-24 00:44:24,063 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:44:24" (3/3) ... [2024-11-24 00:44:24,064 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_init_copy_harness.i [2024-11-24 00:44:24,082 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 00:44:24,084 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_byte_buf_init_copy_harness.i that has 20 procedures, 201 locations, 1 initial locations, 9 loop locations, and 1 error locations. [2024-11-24 00:44:24,159 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:44:24,175 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;@32ee3dd6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:44:24,175 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 00:44:24,180 INFO L276 IsEmpty]: Start isEmpty. Operand has 185 states, 122 states have (on average 1.221311475409836) internal successors, (149), 121 states have internal predecessors, (149), 49 states have call successors, (49), 15 states have call predecessors, (49), 15 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2024-11-24 00:44:24,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-24 00:44:24,193 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:44:24,194 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:44:24,195 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:44:24,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:44:24,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1479574505, now seen corresponding path program 1 times [2024-11-24 00:44:24,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:44:24,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589497205] [2024-11-24 00:44:24,211 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:44:24,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:45:58,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:45:59,792 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-24 00:45:59,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:45:59,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589497205] [2024-11-24 00:45:59,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589497205] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:45:59,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838293597] [2024-11-24 00:45:59,794 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:45:59,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:45:59,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c106496-95e4-4343-90c5-8e9cb8243ccb/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:45:59,801 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c106496-95e4-4343-90c5-8e9cb8243ccb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:45:59,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c106496-95e4-4343-90c5-8e9cb8243ccb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 00:47:33,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:47:33,211 INFO L256 TraceCheckSpWp]: Trace formula consists of 7665 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-24 00:47:33,222 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:47:33,237 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-24 00:47:33,238 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:47:33,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838293597] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:47:33,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:47:33,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-24 00:47:33,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830364376] [2024-11-24 00:47:33,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:47:33,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 00:47:33,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:47:33,264 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 00:47:33,264 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 00:47:33,266 INFO L87 Difference]: Start difference. First operand has 185 states, 122 states have (on average 1.221311475409836) internal successors, (149), 121 states have internal predecessors, (149), 49 states have call successors, (49), 15 states have call predecessors, (49), 15 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-24 00:47:33,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:47:33,311 INFO L93 Difference]: Finished difference Result 366 states and 520 transitions. [2024-11-24 00:47:33,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 00:47:33,313 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 82 [2024-11-24 00:47:33,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:47:33,322 INFO L225 Difference]: With dead ends: 366 [2024-11-24 00:47:33,322 INFO L226 Difference]: Without dead ends: 179 [2024-11-24 00:47:33,326 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 00:47:33,329 INFO L435 NwaCegarLoop]: 238 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, 238 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:47:33,330 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:47:33,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-11-24 00:47:33,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2024-11-24 00:47:33,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 114 states have (on average 1.1666666666666667) internal successors, (133), 115 states have internal predecessors, (133), 49 states have call successors, (49), 15 states have call predecessors, (49), 15 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-24 00:47:33,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 230 transitions. [2024-11-24 00:47:33,381 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 230 transitions. Word has length 82 [2024-11-24 00:47:33,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:47:33,381 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 230 transitions. [2024-11-24 00:47:33,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-24 00:47:33,382 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 230 transitions. [2024-11-24 00:47:33,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-24 00:47:33,385 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:47:33,386 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 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] [2024-11-24 00:47:33,411 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c106496-95e4-4343-90c5-8e9cb8243ccb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 00:47:33,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c106496-95e4-4343-90c5-8e9cb8243ccb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-24 00:47:33,587 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:47:33,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:47:33,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1798477065, now seen corresponding path program 1 times [2024-11-24 00:47:33,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:47:33,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116045217] [2024-11-24 00:47:33,588 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:47:33,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:48:58,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:49:01,859 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-24 00:49:01,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:49:01,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116045217] [2024-11-24 00:49:01,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116045217] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:49:01,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723022681] [2024-11-24 00:49:01,859 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:49:01,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:49:01,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c106496-95e4-4343-90c5-8e9cb8243ccb/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:49:01,864 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c106496-95e4-4343-90c5-8e9cb8243ccb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:49:01,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c106496-95e4-4343-90c5-8e9cb8243ccb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 00:50:30,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:50:30,184 INFO L256 TraceCheckSpWp]: Trace formula consists of 7687 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-24 00:50:30,196 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:50:30,657 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-24 00:50:30,657 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:50:30,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723022681] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:50:30,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:50:30,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2024-11-24 00:50:30,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722348906] [2024-11-24 00:50:30,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:50:30,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:50:30,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:50:30,660 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:50:30,660 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:50:30,660 INFO L87 Difference]: Start difference. First operand 179 states and 230 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-24 00:50:30,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:50:30,841 INFO L93 Difference]: Finished difference Result 248 states and 316 transitions. [2024-11-24 00:50:30,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:50:30,842 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 92 [2024-11-24 00:50:30,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:50:30,844 INFO L225 Difference]: With dead ends: 248 [2024-11-24 00:50:30,844 INFO L226 Difference]: Without dead ends: 173 [2024-11-24 00:50:30,845 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:50:30,851 INFO L435 NwaCegarLoop]: 228 mSDtfsCounter, 0 mSDsluCounter, 902 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1130 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:50:30,852 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1130 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:50:30,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-11-24 00:50:30,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2024-11-24 00:50:30,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 110 states have (on average 1.1545454545454545) internal successors, (127), 111 states have internal predecessors, (127), 47 states have call successors, (47), 15 states have call predecessors, (47), 15 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-24 00:50:30,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 220 transitions. [2024-11-24 00:50:30,871 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 220 transitions. Word has length 92 [2024-11-24 00:50:30,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:50:30,876 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 220 transitions. [2024-11-24 00:50:30,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-24 00:50:30,877 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 220 transitions. [2024-11-24 00:50:30,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-24 00:50:30,879 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:50:30,883 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:50:30,904 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c106496-95e4-4343-90c5-8e9cb8243ccb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-24 00:50:31,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c106496-95e4-4343-90c5-8e9cb8243ccb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:50:31,084 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:50:31,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:50:31,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1248477510, now seen corresponding path program 1 times [2024-11-24 00:50:31,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:50:31,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697023800] [2024-11-24 00:50:31,085 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:50:31,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:51:57,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:52:00,373 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-24 00:52:00,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:52:00,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697023800] [2024-11-24 00:52:00,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697023800] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:52:00,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318390877] [2024-11-24 00:52:00,376 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:52:00,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:52:00,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c106496-95e4-4343-90c5-8e9cb8243ccb/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:52:00,381 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c106496-95e4-4343-90c5-8e9cb8243ccb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:52:00,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c106496-95e4-4343-90c5-8e9cb8243ccb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 00:53:31,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:53:32,021 INFO L256 TraceCheckSpWp]: Trace formula consists of 7708 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-24 00:53:32,028 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:53:32,705 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-24 00:53:32,705 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:53:32,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318390877] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:53:32,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:53:32,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2024-11-24 00:53:32,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040287564] [2024-11-24 00:53:32,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:53:32,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:53:32,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:53:32,707 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:53:32,707 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:53:32,707 INFO L87 Difference]: Start difference. First operand 173 states and 220 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-24 00:53:34,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:53:34,420 INFO L93 Difference]: Finished difference Result 335 states and 428 transitions. [2024-11-24 00:53:34,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:53:34,421 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 95 [2024-11-24 00:53:34,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:53:34,425 INFO L225 Difference]: With dead ends: 335 [2024-11-24 00:53:34,425 INFO L226 Difference]: Without dead ends: 176 [2024-11-24 00:53:34,426 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-24 00:53:34,427 INFO L435 NwaCegarLoop]: 176 mSDtfsCounter, 228 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:53:34,427 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 650 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-24 00:53:34,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-11-24 00:53:34,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2024-11-24 00:53:34,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 112 states have (on average 1.1517857142857142) internal successors, (129), 114 states have internal predecessors, (129), 47 states have call successors, (47), 15 states have call predecessors, (47), 16 states have return successors, (50), 46 states have call predecessors, (50), 46 states have call successors, (50) [2024-11-24 00:53:34,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 226 transitions. [2024-11-24 00:53:34,456 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 226 transitions. Word has length 95 [2024-11-24 00:53:34,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:53:34,457 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 226 transitions. [2024-11-24 00:53:34,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-24 00:53:34,457 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 226 transitions. [2024-11-24 00:53:34,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-24 00:53:34,460 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:53:34,461 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:53:34,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c106496-95e4-4343-90c5-8e9cb8243ccb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-24 00:53:34,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c106496-95e4-4343-90c5-8e9cb8243ccb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:53:34,661 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:53:34,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:53:34,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1378242215, now seen corresponding path program 1 times [2024-11-24 00:53:34,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:53:34,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038658227] [2024-11-24 00:53:34,662 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:53:34,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:55:16,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:17,609 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-24 00:55:17,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:55:17,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038658227] [2024-11-24 00:55:17,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038658227] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:55:17,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794380442] [2024-11-24 00:55:17,610 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:17,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:55:17,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c106496-95e4-4343-90c5-8e9cb8243ccb/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:55:17,614 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c106496-95e4-4343-90c5-8e9cb8243ccb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:55:17,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c106496-95e4-4343-90c5-8e9cb8243ccb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 00:57:06,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:57:06,753 INFO L256 TraceCheckSpWp]: Trace formula consists of 7720 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 00:57:06,758 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:57:06,792 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-24 00:57:06,792 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:57:06,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794380442] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:57:06,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:57:06,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-24 00:57:06,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269000768] [2024-11-24 00:57:06,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:57:06,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:57:06,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:57:06,793 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:57:06,794 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:57:06,794 INFO L87 Difference]: Start difference. First operand 176 states and 226 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-24 00:57:06,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:57:06,911 INFO L93 Difference]: Finished difference Result 340 states and 441 transitions. [2024-11-24 00:57:06,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:57:06,912 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 101 [2024-11-24 00:57:06,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:57:06,914 INFO L225 Difference]: With dead ends: 340 [2024-11-24 00:57:06,915 INFO L226 Difference]: Without dead ends: 178 [2024-11-24 00:57:06,915 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:57:06,916 INFO L435 NwaCegarLoop]: 218 mSDtfsCounter, 0 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:57:06,917 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 646 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:57:06,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-11-24 00:57:06,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2024-11-24 00:57:06,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 114 states have (on average 1.1491228070175439) internal successors, (131), 116 states have internal predecessors, (131), 47 states have call successors, (47), 15 states have call predecessors, (47), 16 states have return successors, (50), 46 states have call predecessors, (50), 46 states have call successors, (50) [2024-11-24 00:57:06,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 228 transitions. [2024-11-24 00:57:06,935 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 228 transitions. Word has length 101 [2024-11-24 00:57:06,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:57:06,935 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 228 transitions. [2024-11-24 00:57:06,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-24 00:57:06,935 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 228 transitions. [2024-11-24 00:57:06,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-24 00:57:06,937 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:57:06,937 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:57:06,961 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c106496-95e4-4343-90c5-8e9cb8243ccb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-24 00:57:07,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c106496-95e4-4343-90c5-8e9cb8243ccb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:57:07,138 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:57:07,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:57:07,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1870868389, now seen corresponding path program 1 times [2024-11-24 00:57:07,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:57:07,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025107874] [2024-11-24 00:57:07,138 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:57:07,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:58:37,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:58:39,691 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-24 00:58:39,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:58:39,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025107874] [2024-11-24 00:58:39,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025107874] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:58:39,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400280542] [2024-11-24 00:58:39,692 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:58:39,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:58:39,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c106496-95e4-4343-90c5-8e9cb8243ccb/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:58:39,694 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c106496-95e4-4343-90c5-8e9cb8243ccb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:58:39,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c106496-95e4-4343-90c5-8e9cb8243ccb/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process