./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness.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_2eb31714-5a77-4aa7-83b3-e4efe395a359/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eb31714-5a77-4aa7-83b3-e4efe395a359/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_2eb31714-5a77-4aa7-83b3-e4efe395a359/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eb31714-5a77-4aa7-83b3-e4efe395a359/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eb31714-5a77-4aa7-83b3-e4efe395a359/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_2eb31714-5a77-4aa7-83b3-e4efe395a359/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 99ee682e10e695b9eb1615836043680c46e24c4df6227faaade6163d2feea99e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:05:16,643 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:05:16,720 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eb31714-5a77-4aa7-83b3-e4efe395a359/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-27 20:05:16,732 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:05:16,732 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:05:16,779 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:05:16,780 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:05:16,780 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:05:16,780 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:05:16,780 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:05:16,781 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:05:16,781 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:05:16,781 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:05:16,781 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:05:16,782 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:05:16,782 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:05:16,782 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 20:05:16,782 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:05:16,782 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:05:16,782 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 20:05:16,783 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:05:16,783 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 20:05:16,783 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:05:16,783 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:05:16,783 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:05:16,784 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:05:16,784 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:05:16,784 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:05:16,784 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:05:16,784 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:05:16,784 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:05:16,785 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:05:16,785 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:05:16,785 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:05:16,785 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:05:16,785 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:05:16,785 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:05:16,786 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 20:05:16,786 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 20:05:16,786 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:05:16,786 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:05:16,786 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:05:16,786 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:05:16,786 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:05:16,787 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:05:16,787 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_2eb31714-5a77-4aa7-83b3-e4efe395a359/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 -> 99ee682e10e695b9eb1615836043680c46e24c4df6227faaade6163d2feea99e [2024-11-27 20:05:17,201 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:05:17,216 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:05:17,219 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:05:17,221 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:05:17,222 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:05:17,223 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eb31714-5a77-4aa7-83b3-e4efe395a359/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness.i [2024-11-27 20:05:20,709 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eb31714-5a77-4aa7-83b3-e4efe395a359/bin/uautomizer-verify-aQ6SnzHsRB/data/914bfb499/b9dcdf2402c847019370c6fc99a17cf0/FLAG576852b4b [2024-11-27 20:05:21,435 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:05:21,439 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eb31714-5a77-4aa7-83b3-e4efe395a359/sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness.i [2024-11-27 20:05:21,489 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eb31714-5a77-4aa7-83b3-e4efe395a359/bin/uautomizer-verify-aQ6SnzHsRB/data/914bfb499/b9dcdf2402c847019370c6fc99a17cf0/FLAG576852b4b [2024-11-27 20:05:21,519 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eb31714-5a77-4aa7-83b3-e4efe395a359/bin/uautomizer-verify-aQ6SnzHsRB/data/914bfb499/b9dcdf2402c847019370c6fc99a17cf0 [2024-11-27 20:05:21,523 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:05:21,525 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:05:21,529 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:05:21,530 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:05:21,535 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:05:21,536 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:05:21" (1/1) ... [2024-11-27 20:05:21,540 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f1b7ae7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:05:21, skipping insertion in model container [2024-11-27 20:05:21,540 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:05:21" (1/1) ... [2024-11-27 20:05:21,677 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:05:21,995 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_2eb31714-5a77-4aa7-83b3-e4efe395a359/sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness.i[4492,4505] [2024-11-27 20:05:22,004 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_2eb31714-5a77-4aa7-83b3-e4efe395a359/sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness.i[4552,4565] [2024-11-27 20:05:23,203 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:05:23,204 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:05:23,205 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:05:23,206 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:05:23,207 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:05:23,227 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:05:23,228 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:05:23,230 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:05:23,231 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:05:24,307 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:05:24,307 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:05:24,369 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:05:24,425 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:05:24,440 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_2eb31714-5a77-4aa7-83b3-e4efe395a359/sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness.i[4492,4505] [2024-11-27 20:05:24,440 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_2eb31714-5a77-4aa7-83b3-e4efe395a359/sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness.i[4552,4565] [2024-11-27 20:05:24,485 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:05:24,486 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:05:24,486 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:05:24,487 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:05:24,487 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:05:24,494 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:05:24,494 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:05:24,495 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:05:24,496 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:05:24,635 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8277] [2024-11-27 20:05:24,638 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:05:24,638 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:05:24,680 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8763-8774] [2024-11-27 20:05:24,706 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:05:24,985 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:05:24,986 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:05:24 WrapperNode [2024-11-27 20:05:24,987 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:05:24,988 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:05:24,988 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:05:24,988 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:05:24,995 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:05:24" (1/1) ... [2024-11-27 20:05:25,080 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:05:24" (1/1) ... [2024-11-27 20:05:25,175 INFO L138 Inliner]: procedures = 680, calls = 2609, calls flagged for inlining = 60, calls inlined = 6, statements flattened = 802 [2024-11-27 20:05:25,175 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:05:25,176 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:05:25,176 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:05:25,176 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:05:25,189 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:05:24" (1/1) ... [2024-11-27 20:05:25,189 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:05:24" (1/1) ... [2024-11-27 20:05:25,202 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:05:24" (1/1) ... [2024-11-27 20:05:25,288 INFO L175 MemorySlicer]: Split 516 memory accesses to 6 slices as follows [2, 257, 238, 6, 8, 5]. 50 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 0, 6, 0, 0, 5]. The 491 writes are split as follows [0, 257, 232, 2, 0, 0]. [2024-11-27 20:05:25,292 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:05:24" (1/1) ... [2024-11-27 20:05:25,292 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:05:24" (1/1) ... [2024-11-27 20:05:25,352 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:05:24" (1/1) ... [2024-11-27 20:05:25,362 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:05:24" (1/1) ... [2024-11-27 20:05:25,366 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:05:24" (1/1) ... [2024-11-27 20:05:25,377 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:05:24" (1/1) ... [2024-11-27 20:05:25,381 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:05:24" (1/1) ... [2024-11-27 20:05:25,394 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:05:25,394 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:05:25,395 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:05:25,395 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:05:25,396 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:05:24" (1/1) ... [2024-11-27 20:05:25,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:05:25,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eb31714-5a77-4aa7-83b3-e4efe395a359/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:05:25,447 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eb31714-5a77-4aa7-83b3-e4efe395a359/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:05:25,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eb31714-5a77-4aa7-83b3-e4efe395a359/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:05:25,484 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq_c_str [2024-11-27 20:05:25,484 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq_c_str [2024-11-27 20:05:25,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-27 20:05:25,485 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-27 20:05:25,485 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-27 20:05:25,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-27 20:05:25,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-27 20:05:25,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-27 20:05:25,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-27 20:05:25,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-27 20:05:25,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-27 20:05:25,486 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-27 20:05:25,486 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-27 20:05:25,486 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-27 20:05:25,486 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-27 20:05:25,486 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-27 20:05:25,486 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-27 20:05:25,486 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-27 20:05:25,488 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-27 20:05:25,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-27 20:05:25,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:05:25,489 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2024-11-27 20:05:25,489 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2024-11-27 20:05:25,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:05:25,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:05:25,489 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-27 20:05:25,489 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-27 20:05:25,489 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2024-11-27 20:05:25,489 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2024-11-27 20:05:25,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-27 20:05:25,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-27 20:05:25,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-27 20:05:25,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-27 20:05:25,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-27 20:05:25,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-11-27 20:05:25,490 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2024-11-27 20:05:25,490 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2024-11-27 20:05:25,490 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-27 20:05:25,490 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-27 20:05:25,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-27 20:05:25,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-27 20:05:25,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-27 20:05:25,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-27 20:05:25,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-27 20:05:25,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-27 20:05:25,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-27 20:05:25,490 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-27 20:05:25,490 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-27 20:05:25,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-27 20:05:25,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-27 20:05:25,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-27 20:05:25,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-27 20:05:25,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-27 20:05:25,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-27 20:05:25,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:05:25,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-27 20:05:25,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-27 20:05:25,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-27 20:05:25,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-27 20:05:25,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-27 20:05:25,836 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:05:25,839 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:05:35,091 INFO L? ?]: Removed 68 outVars from TransFormulas that were not future-live. [2024-11-27 20:05:35,095 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:05:35,117 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:05:35,117 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-27 20:05:35,118 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:05:35 BoogieIcfgContainer [2024-11-27 20:05:35,118 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:05:35,120 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:05:35,120 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:05:35,126 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:05:35,127 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:05:21" (1/3) ... [2024-11-27 20:05:35,128 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c6b2ef3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:05:35, skipping insertion in model container [2024-11-27 20:05:35,128 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:05:24" (2/3) ... [2024-11-27 20:05:35,128 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c6b2ef3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:05:35, skipping insertion in model container [2024-11-27 20:05:35,128 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:05:35" (3/3) ... [2024-11-27 20:05:35,130 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_array_eq_c_str_harness.i [2024-11-27 20:05:35,149 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:05:35,151 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_array_eq_c_str_harness.i that has 10 procedures, 96 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-27 20:05:35,237 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:05:35,257 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;@400ed97b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:05:35,257 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 20:05:35,263 INFO L276 IsEmpty]: Start isEmpty. Operand has 96 states, 59 states have (on average 1.271186440677966) internal successors, (75), 62 states have internal predecessors, (75), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-27 20:05:35,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-27 20:05:35,277 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:05:35,278 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2024-11-27 20:05:35,279 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:05:35,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:05:35,285 INFO L85 PathProgramCache]: Analyzing trace with hash 511260694, now seen corresponding path program 1 times [2024-11-27 20:05:35,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:05:35,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904216428] [2024-11-27 20:05:35,298 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:05:35,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:07:33,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:07:34,649 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-27 20:07:34,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:07:34,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904216428] [2024-11-27 20:07:34,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904216428] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:07:34,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803036730] [2024-11-27 20:07:34,652 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:07:34,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:07:34,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eb31714-5a77-4aa7-83b3-e4efe395a359/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:07:34,655 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eb31714-5a77-4aa7-83b3-e4efe395a359/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:07:34,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eb31714-5a77-4aa7-83b3-e4efe395a359/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:09:36,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:36,732 INFO L256 TraceCheckSpWp]: Trace formula consists of 7538 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-27 20:09:36,745 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:09:36,761 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-27 20:09:36,761 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:09:36,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803036730] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:09:36,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:09:36,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-27 20:09:36,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283173978] [2024-11-27 20:09:36,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:09:36,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 20:09:36,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:09:36,793 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 20:09:36,794 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 20:09:36,797 INFO L87 Difference]: Start difference. First operand has 96 states, 59 states have (on average 1.271186440677966) internal successors, (75), 62 states have internal predecessors, (75), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 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) [2024-11-27 20:09:36,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:09:36,834 INFO L93 Difference]: Finished difference Result 189 states and 272 transitions. [2024-11-27 20:09:36,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 20:09:36,838 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 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 67 [2024-11-27 20:09:36,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:09:36,847 INFO L225 Difference]: With dead ends: 189 [2024-11-27 20:09:36,847 INFO L226 Difference]: Without dead ends: 91 [2024-11-27 20:09:36,854 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 68 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 20:09:36,864 INFO L435 NwaCegarLoop]: 124 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, 124 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 20:09:36,865 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:09:36,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-27 20:09:36,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2024-11-27 20:09:36,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 55 states have (on average 1.2181818181818183) internal successors, (67), 57 states have internal predecessors, (67), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-27 20:09:36,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 118 transitions. [2024-11-27 20:09:36,916 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 118 transitions. Word has length 67 [2024-11-27 20:09:36,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:09:36,917 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 118 transitions. [2024-11-27 20:09:36,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 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) [2024-11-27 20:09:36,917 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 118 transitions. [2024-11-27 20:09:36,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-27 20:09:36,921 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:09:36,923 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2024-11-27 20:09:36,953 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eb31714-5a77-4aa7-83b3-e4efe395a359/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 20:09:37,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eb31714-5a77-4aa7-83b3-e4efe395a359/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:09:37,125 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:09:37,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:09:37,125 INFO L85 PathProgramCache]: Analyzing trace with hash -2109288692, now seen corresponding path program 1 times [2024-11-27 20:09:37,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:09:37,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113244953] [2024-11-27 20:09:37,126 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:37,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:11:37,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:11:44,782 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-27 20:11:44,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:11:44,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113244953] [2024-11-27 20:11:44,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113244953] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:11:44,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130294579] [2024-11-27 20:11:44,783 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:11:44,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:11:44,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eb31714-5a77-4aa7-83b3-e4efe395a359/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:11:44,786 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eb31714-5a77-4aa7-83b3-e4efe395a359/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:11:44,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eb31714-5a77-4aa7-83b3-e4efe395a359/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 20:13:43,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:13:43,459 INFO L256 TraceCheckSpWp]: Trace formula consists of 7538 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-27 20:13:43,470 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:13:44,831 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-27 20:13:44,832 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:13:44,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130294579] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:13:44,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:13:44,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 9 [2024-11-27 20:13:44,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734266052] [2024-11-27 20:13:44,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:13:44,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 20:13:44,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:13:44,835 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 20:13:44,835 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:13:44,835 INFO L87 Difference]: Start difference. First operand 91 states and 118 transitions. Second operand has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 4 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-27 20:13:45,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:13:45,984 INFO L93 Difference]: Finished difference Result 144 states and 188 transitions. [2024-11-27 20:13:45,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:13:45,985 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 4 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) Word has length 67 [2024-11-27 20:13:45,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:13:45,988 INFO L225 Difference]: With dead ends: 144 [2024-11-27 20:13:45,988 INFO L226 Difference]: Without dead ends: 91 [2024-11-27 20:13:45,989 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:13:45,990 INFO L435 NwaCegarLoop]: 103 mSDtfsCounter, 6 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:13:45,990 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 680 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-27 20:13:45,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-27 20:13:46,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2024-11-27 20:13:46,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 55 states have (on average 1.2) internal successors, (66), 57 states have internal predecessors, (66), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-27 20:13:46,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 117 transitions. [2024-11-27 20:13:46,014 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 117 transitions. Word has length 67 [2024-11-27 20:13:46,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:13:46,016 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 117 transitions. [2024-11-27 20:13:46,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 4 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-27 20:13:46,016 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 117 transitions. [2024-11-27 20:13:46,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-27 20:13:46,020 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:13:46,020 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 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] [2024-11-27 20:13:46,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eb31714-5a77-4aa7-83b3-e4efe395a359/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-27 20:13:46,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2eb31714-5a77-4aa7-83b3-e4efe395a359/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:13:46,221 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:13:46,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:13:46,222 INFO L85 PathProgramCache]: Analyzing trace with hash 890501595, now seen corresponding path program 1 times [2024-11-27 20:13:46,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:13:46,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874393994] [2024-11-27 20:13:46,222 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:13:46,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:15:40,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:55,036 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-11-27 20:15:55,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:15:55,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874393994] [2024-11-27 20:15:55,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874393994] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:15:55,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:15:55,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-27 20:15:55,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118576350] [2024-11-27 20:15:55,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:15:55,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-27 20:15:55,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:15:55,038 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-27 20:15:55,039 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2024-11-27 20:15:55,039 INFO L87 Difference]: Start difference. First operand 91 states and 117 transitions. Second operand has 19 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 7 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-27 20:15:59,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:15:59,219 INFO L93 Difference]: Finished difference Result 142 states and 196 transitions. [2024-11-27 20:15:59,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-27 20:15:59,220 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 7 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) Word has length 95 [2024-11-27 20:15:59,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:15:59,225 INFO L225 Difference]: With dead ends: 142 [2024-11-27 20:15:59,225 INFO L226 Difference]: Without dead ends: 140 [2024-11-27 20:15:59,226 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2024-11-27 20:15:59,227 INFO L435 NwaCegarLoop]: 114 mSDtfsCounter, 91 mSDsluCounter, 1486 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 1600 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:15:59,227 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 1600 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-27 20:15:59,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-27 20:15:59,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 106. [2024-11-27 20:15:59,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 63 states have (on average 1.2063492063492063) internal successors, (76), 67 states have internal predecessors, (76), 30 states have call successors, (30), 10 states have call predecessors, (30), 12 states have return successors, (33), 29 states have call predecessors, (33), 29 states have call successors, (33) [2024-11-27 20:15:59,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 139 transitions. [2024-11-27 20:15:59,259 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 139 transitions. Word has length 95 [2024-11-27 20:15:59,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:15:59,261 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 139 transitions. [2024-11-27 20:15:59,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 7 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-27 20:15:59,261 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 139 transitions. [2024-11-27 20:15:59,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-27 20:15:59,266 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:15:59,266 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:15:59,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 20:15:59,267 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:15:59,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:59,267 INFO L85 PathProgramCache]: Analyzing trace with hash -447727567, now seen corresponding path program 1 times [2024-11-27 20:15:59,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:15:59,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081192752] [2024-11-27 20:15:59,268 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:59,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms