./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be16_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_06152cd7-2020-4d45-8de9-ccdcae131b01/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06152cd7-2020-4d45-8de9-ccdcae131b01/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_06152cd7-2020-4d45-8de9-ccdcae131b01/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06152cd7-2020-4d45-8de9-ccdcae131b01/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be16_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06152cd7-2020-4d45-8de9-ccdcae131b01/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_06152cd7-2020-4d45-8de9-ccdcae131b01/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 1e1b2479546ce911ed527b938020405849e60d55228e9e448b0bdaf9e8ba6509 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:06:03,863 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:06:03,981 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06152cd7-2020-4d45-8de9-ccdcae131b01/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-28 04:06:03,987 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:06:03,987 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:06:04,035 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:06:04,037 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:06:04,037 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:06:04,038 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:06:04,038 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:06:04,039 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:06:04,039 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:06:04,040 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:06:04,040 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:06:04,040 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:06:04,040 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:06:04,040 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:06:04,040 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:06:04,041 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:06:04,041 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:06:04,041 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:06:04,041 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:06:04,041 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:06:04,041 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:06:04,041 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:06:04,041 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:06:04,041 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:06:04,042 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:06:04,042 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:06:04,042 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:06:04,042 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:06:04,042 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:06:04,044 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:06:04,044 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:06:04,044 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:06:04,045 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:06:04,045 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:06:04,045 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:06:04,045 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:06:04,045 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:06:04,045 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:06:04,046 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:06:04,046 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:06:04,046 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:06:04,047 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:06:04,047 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_06152cd7-2020-4d45-8de9-ccdcae131b01/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 -> 1e1b2479546ce911ed527b938020405849e60d55228e9e448b0bdaf9e8ba6509 [2024-11-28 04:06:04,474 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:06:04,492 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:06:04,495 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:06:04,497 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:06:04,497 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:06:04,499 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06152cd7-2020-4d45-8de9-ccdcae131b01/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be16_harness.i [2024-11-28 04:06:07,789 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06152cd7-2020-4d45-8de9-ccdcae131b01/bin/uautomizer-verify-aQ6SnzHsRB/data/e04e5d2d5/d18eea46a9ee4ecfa52f7b4ab391f314/FLAGe4ec33c92 [2024-11-28 04:06:08,621 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:06:08,622 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06152cd7-2020-4d45-8de9-ccdcae131b01/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be16_harness.i [2024-11-28 04:06:08,694 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06152cd7-2020-4d45-8de9-ccdcae131b01/bin/uautomizer-verify-aQ6SnzHsRB/data/e04e5d2d5/d18eea46a9ee4ecfa52f7b4ab391f314/FLAGe4ec33c92 [2024-11-28 04:06:08,721 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06152cd7-2020-4d45-8de9-ccdcae131b01/bin/uautomizer-verify-aQ6SnzHsRB/data/e04e5d2d5/d18eea46a9ee4ecfa52f7b4ab391f314 [2024-11-28 04:06:08,724 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:06:08,727 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:06:08,729 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:06:08,730 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:06:08,736 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:06:08,738 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:06:08" (1/1) ... [2024-11-28 04:06:08,741 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3434d3e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:06:08, skipping insertion in model container [2024-11-28 04:06:08,741 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:06:08" (1/1) ... [2024-11-28 04:06:08,879 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:06:09,264 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_06152cd7-2020-4d45-8de9-ccdcae131b01/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be16_harness.i[4497,4510] [2024-11-28 04:06:09,273 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_06152cd7-2020-4d45-8de9-ccdcae131b01/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be16_harness.i[4557,4570] [2024-11-28 04:06:10,447 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:06:10,448 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:06:10,449 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:06:10,450 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:06:10,452 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:06:10,470 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:06:10,471 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:06:10,474 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:06:10,474 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:06:11,532 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:06:11,532 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:06:11,669 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:06:11,805 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:06:11,830 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_06152cd7-2020-4d45-8de9-ccdcae131b01/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be16_harness.i[4497,4510] [2024-11-28 04:06:11,830 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_06152cd7-2020-4d45-8de9-ccdcae131b01/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be16_harness.i[4557,4570] [2024-11-28 04:06:11,904 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:06:11,907 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:06:11,908 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:06:11,908 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:06:11,909 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:06:11,921 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:06:11,921 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:06:11,923 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:06:11,924 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:06:12,135 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8291] [2024-11-28 04:06:12,137 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:06:12,138 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:06:12,160 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8777-8788] [2024-11-28 04:06:12,190 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:06:12,572 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:06:12,573 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:06:12 WrapperNode [2024-11-28 04:06:12,574 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:06:12,575 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:06:12,575 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:06:12,575 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:06:12,584 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:06:12" (1/1) ... [2024-11-28 04:06:12,692 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:06:12" (1/1) ... [2024-11-28 04:06:12,832 INFO L138 Inliner]: procedures = 680, calls = 2618, calls flagged for inlining = 63, calls inlined = 11, statements flattened = 882 [2024-11-28 04:06:12,832 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:06:12,833 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:06:12,833 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:06:12,833 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:06:12,846 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:06:12" (1/1) ... [2024-11-28 04:06:12,847 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:06:12" (1/1) ... [2024-11-28 04:06:12,855 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:06:12" (1/1) ... [2024-11-28 04:06:12,979 INFO L175 MemorySlicer]: Split 562 memory accesses to 7 slices as follows [2, 257, 238, 4, 6, 47, 8]. 46 percent of accesses are in the largest equivalence class. The 21 initializations are split as follows [2, 0, 6, 0, 0, 8, 5]. The 497 writes are split as follows [0, 257, 232, 2, 2, 3, 1]. [2024-11-28 04:06:12,980 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:06:12" (1/1) ... [2024-11-28 04:06:12,980 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:06:12" (1/1) ... [2024-11-28 04:06:13,043 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:06:12" (1/1) ... [2024-11-28 04:06:13,046 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:06:12" (1/1) ... [2024-11-28 04:06:13,054 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:06:12" (1/1) ... [2024-11-28 04:06:13,066 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:06:12" (1/1) ... [2024-11-28 04:06:13,074 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:06:12" (1/1) ... [2024-11-28 04:06:13,104 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:06:13,105 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:06:13,105 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:06:13,105 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:06:13,106 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:06:12" (1/1) ... [2024-11-28 04:06:13,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:06:13,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06152cd7-2020-4d45-8de9-ccdcae131b01/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:06:13,148 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06152cd7-2020-4d45-8de9-ccdcae131b01/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:06:13,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06152cd7-2020-4d45-8de9-ccdcae131b01/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:06:13,190 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2024-11-28 04:06:13,190 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2024-11-28 04:06:13,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 04:06:13,191 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-28 04:06:13,191 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-28 04:06:13,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-28 04:06:13,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-28 04:06:13,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-28 04:06:13,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-28 04:06:13,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-28 04:06:13,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-28 04:06:13,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2024-11-28 04:06:13,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 04:06:13,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 04:06:13,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 04:06:13,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 04:06:13,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-28 04:06:13,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-28 04:06:13,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-28 04:06:13,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 04:06:13,195 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 04:06:13,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 04:06:13,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:06:13,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 04:06:13,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 04:06:13,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-28 04:06:13,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-28 04:06:13,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-28 04:06:13,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-28 04:06:13,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-28 04:06:13,196 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2024-11-28 04:06:13,200 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2024-11-28 04:06:13,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:06:13,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:06:13,201 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-28 04:06:13,201 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-28 04:06:13,201 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2024-11-28 04:06:13,201 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2024-11-28 04:06:13,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-28 04:06:13,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-28 04:06:13,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-28 04:06:13,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-28 04:06:13,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-28 04:06:13,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-11-28 04:06:13,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2024-11-28 04:06:13,201 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 04:06:13,201 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 04:06:13,202 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2024-11-28 04:06:13,202 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2024-11-28 04:06:13,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 04:06:13,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 04:06:13,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 04:06:13,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-28 04:06:13,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-28 04:06:13,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-28 04:06:13,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-28 04:06:13,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-28 04:06:13,202 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_write [2024-11-28 04:06:13,202 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_write [2024-11-28 04:06:13,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-28 04:06:13,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-28 04:06:13,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-28 04:06:13,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-28 04:06:13,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-28 04:06:13,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-28 04:06:13,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-28 04:06:13,203 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-11-28 04:06:13,203 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-11-28 04:06:13,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 04:06:13,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 04:06:13,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 04:06:13,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 04:06:13,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-28 04:06:13,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-28 04:06:13,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-28 04:06:13,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:06:13,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:06:13,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 04:06:13,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 04:06:13,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-28 04:06:13,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-28 04:06:13,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-28 04:06:13,710 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:06:13,713 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:06:24,126 INFO L? ?]: Removed 107 outVars from TransFormulas that were not future-live. [2024-11-28 04:06:24,130 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:06:24,147 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:06:24,147 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-28 04:06:24,150 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:06:24 BoogieIcfgContainer [2024-11-28 04:06:24,150 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:06:24,154 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:06:24,154 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:06:24,160 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:06:24,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:06:08" (1/3) ... [2024-11-28 04:06:24,161 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ecf2073 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:06:24, skipping insertion in model container [2024-11-28 04:06:24,161 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:06:12" (2/3) ... [2024-11-28 04:06:24,161 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ecf2073 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:06:24, skipping insertion in model container [2024-11-28 04:06:24,162 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:06:24" (3/3) ... [2024-11-28 04:06:24,163 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_be16_harness.i [2024-11-28 04:06:24,183 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:06:24,184 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_byte_buf_write_be16_harness.i that has 11 procedures, 133 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 04:06:24,254 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:06:24,269 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;@23b085bf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:06:24,269 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 04:06:24,274 INFO L276 IsEmpty]: Start isEmpty. Operand has 133 states, 87 states have (on average 1.2298850574712643) internal successors, (107), 88 states have internal predecessors, (107), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-28 04:06:24,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-28 04:06:24,286 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:06:24,286 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:06:24,287 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:06:24,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:06:24,292 INFO L85 PathProgramCache]: Analyzing trace with hash 632268755, now seen corresponding path program 1 times [2024-11-28 04:06:24,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:06:24,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610059388] [2024-11-28 04:06:24,302 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:06:24,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:08:02,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:08:03,203 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-28 04:08:03,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:08:03,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610059388] [2024-11-28 04:08:03,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610059388] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:08:03,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271655096] [2024-11-28 04:08:03,207 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:08:03,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:08:03,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06152cd7-2020-4d45-8de9-ccdcae131b01/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:08:03,213 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06152cd7-2020-4d45-8de9-ccdcae131b01/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:08:03,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06152cd7-2020-4d45-8de9-ccdcae131b01/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:09:41,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:09:41,159 INFO L256 TraceCheckSpWp]: Trace formula consists of 7719 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 04:09:41,173 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:09:41,192 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-28 04:09:41,192 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:09:41,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271655096] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:09:41,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:09:41,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 04:09:41,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007264619] [2024-11-28 04:09:41,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:09:41,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 04:09:41,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:09:41,227 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 04:09:41,228 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:09:41,230 INFO L87 Difference]: Start difference. First operand has 133 states, 87 states have (on average 1.2298850574712643) internal successors, (107), 88 states have internal predecessors, (107), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-28 04:09:41,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:09:41,274 INFO L93 Difference]: Finished difference Result 261 states and 370 transitions. [2024-11-28 04:09:41,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 04:09:41,277 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 87 [2024-11-28 04:09:41,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:09:41,290 INFO L225 Difference]: With dead ends: 261 [2024-11-28 04:09:41,290 INFO L226 Difference]: Without dead ends: 128 [2024-11-28 04:09:41,295 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:09:41,301 INFO L435 NwaCegarLoop]: 172 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, 172 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:09:41,302 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:09:41,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-28 04:09:41,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2024-11-28 04:09:41,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 83 states have (on average 1.2048192771084338) internal successors, (100), 84 states have internal predecessors, (100), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2024-11-28 04:09:41,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 167 transitions. [2024-11-28 04:09:41,383 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 167 transitions. Word has length 87 [2024-11-28 04:09:41,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:09:41,387 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 167 transitions. [2024-11-28 04:09:41,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-28 04:09:41,387 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 167 transitions. [2024-11-28 04:09:41,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-28 04:09:41,392 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:09:41,394 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:09:41,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06152cd7-2020-4d45-8de9-ccdcae131b01/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 04:09:41,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06152cd7-2020-4d45-8de9-ccdcae131b01/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-28 04:09:41,595 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:09:41,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:09:41,596 INFO L85 PathProgramCache]: Analyzing trace with hash 481976023, now seen corresponding path program 1 times [2024-11-28 04:09:41,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:09:41,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226125470] [2024-11-28 04:09:41,596 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:09:41,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:28,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:31,010 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-28 04:11:31,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:31,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226125470] [2024-11-28 04:11:31,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226125470] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:11:31,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264619513] [2024-11-28 04:11:31,011 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:31,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:31,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06152cd7-2020-4d45-8de9-ccdcae131b01/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:11:31,015 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06152cd7-2020-4d45-8de9-ccdcae131b01/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:11:31,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06152cd7-2020-4d45-8de9-ccdcae131b01/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:13:24,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:13:24,311 INFO L256 TraceCheckSpWp]: Trace formula consists of 7719 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:13:24,321 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:13:25,117 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-28 04:13:25,117 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:13:25,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264619513] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:13:25,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:13:25,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2024-11-28 04:13:25,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580645859] [2024-11-28 04:13:25,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:13:25,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:13:25,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:13:25,119 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:13:25,119 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:13:25,120 INFO L87 Difference]: Start difference. First operand 128 states and 167 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-28 04:13:26,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:13:26,251 INFO L93 Difference]: Finished difference Result 233 states and 312 transitions. [2024-11-28 04:13:26,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:13:26,252 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 87 [2024-11-28 04:13:26,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:13:26,256 INFO L225 Difference]: With dead ends: 233 [2024-11-28 04:13:26,256 INFO L226 Difference]: Without dead ends: 131 [2024-11-28 04:13:26,257 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:13:26,258 INFO L435 NwaCegarLoop]: 133 mSDtfsCounter, 175 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 04:13:26,259 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 364 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 04:13:26,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-28 04:13:26,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2024-11-28 04:13:26,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 85 states have (on average 1.2) internal successors, (102), 87 states have internal predecessors, (102), 34 states have call successors, (34), 10 states have call predecessors, (34), 11 states have return successors, (37), 33 states have call predecessors, (37), 33 states have call successors, (37) [2024-11-28 04:13:26,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 173 transitions. [2024-11-28 04:13:26,280 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 173 transitions. Word has length 87 [2024-11-28 04:13:26,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:13:26,281 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 173 transitions. [2024-11-28 04:13:26,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-28 04:13:26,281 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 173 transitions. [2024-11-28 04:13:26,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-28 04:13:26,283 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:13:26,284 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:13:26,309 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06152cd7-2020-4d45-8de9-ccdcae131b01/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 04:13:26,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06152cd7-2020-4d45-8de9-ccdcae131b01/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-28 04:13:26,484 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:13:26,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:13:26,485 INFO L85 PathProgramCache]: Analyzing trace with hash -2047634740, now seen corresponding path program 1 times [2024-11-28 04:13:26,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:13:26,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034971083] [2024-11-28 04:13:26,486 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:13:26,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:15:20,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:15:24,460 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-28 04:15:24,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:15:24,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034971083] [2024-11-28 04:15:24,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034971083] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:15:24,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072485076] [2024-11-28 04:15:24,461 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:15:24,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:15:24,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06152cd7-2020-4d45-8de9-ccdcae131b01/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:15:24,467 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06152cd7-2020-4d45-8de9-ccdcae131b01/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:15:24,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06152cd7-2020-4d45-8de9-ccdcae131b01/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:17:20,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:17:21,040 INFO L256 TraceCheckSpWp]: Trace formula consists of 7736 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 04:17:21,049 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:17:22,064 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-28 04:17:22,064 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:17:22,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072485076] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:17:22,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:17:22,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2024-11-28 04:17:22,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175626281] [2024-11-28 04:17:22,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:17:22,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:17:22,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:17:22,066 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:17:22,067 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:17:22,067 INFO L87 Difference]: Start difference. First operand 131 states and 173 transitions. Second operand has 7 states, 6 states have (on average 8.5) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-28 04:17:24,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:17:24,075 INFO L93 Difference]: Finished difference Result 228 states and 303 transitions. [2024-11-28 04:17:24,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:17:24,077 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.5) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 93 [2024-11-28 04:17:24,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:17:24,079 INFO L225 Difference]: With dead ends: 228 [2024-11-28 04:17:24,083 INFO L226 Difference]: Without dead ends: 131 [2024-11-28 04:17:24,084 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-11-28 04:17:24,085 INFO L435 NwaCegarLoop]: 133 mSDtfsCounter, 176 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:17:24,087 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 619 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-28 04:17:24,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-28 04:17:24,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2024-11-28 04:17:24,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 85 states have (on average 1.2) internal successors, (102), 87 states have internal predecessors, (102), 34 states have call successors, (34), 10 states have call predecessors, (34), 11 states have return successors, (36), 33 states have call predecessors, (36), 33 states have call successors, (36) [2024-11-28 04:17:24,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 172 transitions. [2024-11-28 04:17:24,108 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 172 transitions. Word has length 93 [2024-11-28 04:17:24,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:17:24,109 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 172 transitions. [2024-11-28 04:17:24,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.5) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-28 04:17:24,110 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 172 transitions. [2024-11-28 04:17:24,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-28 04:17:24,112 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:17:24,112 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:17:24,145 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06152cd7-2020-4d45-8de9-ccdcae131b01/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 04:17:24,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06152cd7-2020-4d45-8de9-ccdcae131b01/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:17:24,313 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:17:24,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:17:24,314 INFO L85 PathProgramCache]: Analyzing trace with hash -2052713087, now seen corresponding path program 2 times [2024-11-28 04:17:24,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:17:24,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937020654] [2024-11-28 04:17:24,314 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:17:24,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:19:18,321 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:19:18,323 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:19:22,977 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-28 04:19:22,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:19:22,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937020654] [2024-11-28 04:19:22,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937020654] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:19:22,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:19:22,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 04:19:22,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596751647] [2024-11-28 04:19:22,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:19:22,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:19:22,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:19:22,980 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:19:22,980 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:19:22,980 INFO L87 Difference]: Start difference. First operand 131 states and 172 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 7 states have internal predecessors, (45), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-28 04:19:24,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:19:24,024 INFO L93 Difference]: Finished difference Result 222 states and 293 transitions. [2024-11-28 04:19:24,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:19:24,025 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 7 states have internal predecessors, (45), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) Word has length 99 [2024-11-28 04:19:24,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:19:24,028 INFO L225 Difference]: With dead ends: 222 [2024-11-28 04:19:24,028 INFO L226 Difference]: Without dead ends: 128 [2024-11-28 04:19:24,029 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:19:24,031 INFO L435 NwaCegarLoop]: 151 mSDtfsCounter, 43 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:19:24,031 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 817 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 04:19:24,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-28 04:19:24,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2024-11-28 04:19:24,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 83 states have (on average 1.1927710843373494) internal successors, (99), 84 states have internal predecessors, (99), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2024-11-28 04:19:24,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 166 transitions. [2024-11-28 04:19:24,058 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 166 transitions. Word has length 99 [2024-11-28 04:19:24,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:19:24,060 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 166 transitions. [2024-11-28 04:19:24,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 7 states have internal predecessors, (45), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-28 04:19:24,061 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 166 transitions. [2024-11-28 04:19:24,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-28 04:19:24,068 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:19:24,068 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:19:24,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:19:24,068 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:19:24,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:19:24,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1337341399, now seen corresponding path program 1 times [2024-11-28 04:19:24,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:19:24,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993716183] [2024-11-28 04:19:24,069 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:19:24,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms