./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998742a0-4114-4430-9285-5e163c6ac651/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998742a0-4114-4430-9285-5e163c6ac651/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_998742a0-4114-4430-9285-5e163c6ac651/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998742a0-4114-4430-9285-5e163c6ac651/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998742a0-4114-4430-9285-5e163c6ac651/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_998742a0-4114-4430-9285-5e163c6ac651/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 49bf9fd75d56d44e7e1e54aefea9fad1d2b78cb24b15e9eb5cce5de020ddf3d7 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 05:04:02,664 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 05:04:02,755 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998742a0-4114-4430-9285-5e163c6ac651/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-28 05:04:02,769 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 05:04:02,769 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 05:04:02,795 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 05:04:02,795 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 05:04:02,796 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 05:04:02,796 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 05:04:02,796 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 05:04:02,797 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 05:04:02,797 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 05:04:02,797 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 05:04:02,797 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 05:04:02,797 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 05:04:02,798 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 05:04:02,798 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 05:04:02,798 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 05:04:02,798 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 05:04:02,798 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 05:04:02,798 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 05:04:02,798 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 05:04:02,799 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 05:04:02,799 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 05:04:02,799 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 05:04:02,799 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 05:04:02,799 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:04:02,799 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:04:02,799 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:04:02,799 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:04:02,800 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 05:04:02,800 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:04:02,800 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:04:02,800 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:04:02,800 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:04:02,802 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 05:04:02,802 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 05:04:02,802 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 05:04:02,802 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 05:04:02,803 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 05:04:02,803 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 05:04:02,803 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 05:04:02,803 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 05:04:02,803 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 05:04:02,803 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 05:04:02,803 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_998742a0-4114-4430-9285-5e163c6ac651/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 -> 49bf9fd75d56d44e7e1e54aefea9fad1d2b78cb24b15e9eb5cce5de020ddf3d7 [2024-11-28 05:04:03,135 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 05:04:03,145 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 05:04:03,148 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 05:04:03,149 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 05:04:03,149 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 05:04:03,151 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998742a0-4114-4430-9285-5e163c6ac651/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness_negated.i [2024-11-28 05:04:06,252 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998742a0-4114-4430-9285-5e163c6ac651/bin/uautomizer-verify-aQ6SnzHsRB/data/2b954be20/09101649dfbe4a9a917c651a0a9f6b9d/FLAG24f266ca5 [2024-11-28 05:04:06,949 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 05:04:06,950 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998742a0-4114-4430-9285-5e163c6ac651/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness_negated.i [2024-11-28 05:04:07,007 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998742a0-4114-4430-9285-5e163c6ac651/bin/uautomizer-verify-aQ6SnzHsRB/data/2b954be20/09101649dfbe4a9a917c651a0a9f6b9d/FLAG24f266ca5 [2024-11-28 05:04:07,029 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998742a0-4114-4430-9285-5e163c6ac651/bin/uautomizer-verify-aQ6SnzHsRB/data/2b954be20/09101649dfbe4a9a917c651a0a9f6b9d [2024-11-28 05:04:07,032 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 05:04:07,035 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 05:04:07,037 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 05:04:07,038 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 05:04:07,042 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 05:04:07,043 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:04:07" (1/1) ... [2024-11-28 05:04:07,045 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37704dff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:07, skipping insertion in model container [2024-11-28 05:04:07,045 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:04:07" (1/1) ... [2024-11-28 05:04:07,181 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 05:04:07,485 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_998742a0-4114-4430-9285-5e163c6ac651/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness_negated.i[4505,4518] [2024-11-28 05:04:07,498 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_998742a0-4114-4430-9285-5e163c6ac651/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness_negated.i[4565,4578] [2024-11-28 05:04:08,818 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:04:08,819 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:04:08,820 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:04:08,821 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:04:08,822 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:04:08,841 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:04:08,843 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:04:08,846 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:04:08,846 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:04:09,764 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:04:09,764 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:04:09,892 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:04:09,894 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:04:09,984 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:04:10,087 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 05:04:10,101 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_998742a0-4114-4430-9285-5e163c6ac651/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness_negated.i[4505,4518] [2024-11-28 05:04:10,102 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_998742a0-4114-4430-9285-5e163c6ac651/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness_negated.i[4565,4578] [2024-11-28 05:04:10,166 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:04:10,166 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:04:10,166 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:04:10,167 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:04:10,167 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:04:10,181 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:04:10,181 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:04:10,182 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:04:10,182 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:04:10,307 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:04:10,308 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:04:10,385 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8265] [2024-11-28 05:04:10,387 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:04:10,388 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:04:10,409 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8751-8762] [2024-11-28 05:04:10,428 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:04:10,787 INFO L204 MainTranslator]: Completed translation [2024-11-28 05:04:10,788 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:10 WrapperNode [2024-11-28 05:04:10,789 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 05:04:10,790 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 05:04:10,790 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 05:04:10,790 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 05:04:10,801 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:10" (1/1) ... [2024-11-28 05:04:10,926 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:10" (1/1) ... [2024-11-28 05:04:11,030 INFO L138 Inliner]: procedures = 680, calls = 2646, calls flagged for inlining = 63, calls inlined = 10, statements flattened = 971 [2024-11-28 05:04:11,030 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 05:04:11,031 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 05:04:11,031 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 05:04:11,031 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 05:04:11,052 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:10" (1/1) ... [2024-11-28 05:04:11,053 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:10" (1/1) ... [2024-11-28 05:04:11,068 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:10" (1/1) ... [2024-11-28 05:04:11,186 INFO L175 MemorySlicer]: Split 572 memory accesses to 9 slices as follows [257, 32, 2, 238, 9, 9, 20, 1, 4]. 45 percent of accesses are in the largest equivalence class. The 25 initializations are split as follows [0, 4, 2, 6, 5, 4, 2, 0, 2]. The 494 writes are split as follows [257, 3, 0, 232, 1, 0, 1, 0, 0]. [2024-11-28 05:04:11,186 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:10" (1/1) ... [2024-11-28 05:04:11,187 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:10" (1/1) ... [2024-11-28 05:04:11,259 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:10" (1/1) ... [2024-11-28 05:04:11,268 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:10" (1/1) ... [2024-11-28 05:04:11,275 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:10" (1/1) ... [2024-11-28 05:04:11,298 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:10" (1/1) ... [2024-11-28 05:04:11,309 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:10" (1/1) ... [2024-11-28 05:04:11,333 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 05:04:11,336 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 05:04:11,336 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 05:04:11,337 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 05:04:11,338 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:10" (1/1) ... [2024-11-28 05:04:11,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:04:11,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998742a0-4114-4430-9285-5e163c6ac651/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:04:11,385 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998742a0-4114-4430-9285-5e163c6ac651/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 05:04:11,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998742a0-4114-4430-9285-5e163c6ac651/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 05:04:11,424 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2024-11-28 05:04:11,424 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2024-11-28 05:04:11,425 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2024-11-28 05:04:11,425 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2024-11-28 05:04:11,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 05:04:11,426 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-28 05:04:11,426 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-28 05:04:11,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-28 05:04:11,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-28 05:04:11,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-28 05:04:11,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-28 05:04:11,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-28 05:04:11,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-28 05:04:11,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2024-11-28 05:04:11,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2024-11-28 05:04:11,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#8 [2024-11-28 05:04:11,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 05:04:11,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 05:04:11,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 05:04:11,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 05:04:11,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-28 05:04:11,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-28 05:04:11,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-28 05:04:11,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-28 05:04:11,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-28 05:04:11,429 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2024-11-28 05:04:11,429 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2024-11-28 05:04:11,429 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 05:04:11,429 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 05:04:11,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 05:04:11,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 05:04:11,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 05:04:11,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 05:04:11,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-28 05:04:11,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-28 05:04:11,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-28 05:04:11,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-28 05:04:11,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-28 05:04:11,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-28 05:04:11,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2024-11-28 05:04:11,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 05:04:11,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 05:04:11,432 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-28 05:04:11,432 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-28 05:04:11,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-28 05:04:11,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-28 05:04:11,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-28 05:04:11,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-28 05:04:11,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-28 05:04:11,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-11-28 05:04:11,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2024-11-28 05:04:11,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2024-11-28 05:04:11,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#8 [2024-11-28 05:04:11,434 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 05:04:11,435 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 05:04:11,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 05:04:11,435 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2024-11-28 05:04:11,435 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2024-11-28 05:04:11,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 05:04:11,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 05:04:11,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-28 05:04:11,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-28 05:04:11,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-28 05:04:11,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-28 05:04:11,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-28 05:04:11,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-28 05:04:11,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-11-28 05:04:11,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-28 05:04:11,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-28 05:04:11,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-28 05:04:11,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-28 05:04:11,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-28 05:04:11,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-28 05:04:11,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-28 05:04:11,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2024-11-28 05:04:11,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2024-11-28 05:04:11,438 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-11-28 05:04:11,438 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-11-28 05:04:11,438 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2024-11-28 05:04:11,438 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2024-11-28 05:04:11,438 INFO L130 BoogieDeclarations]: Found specification of procedure assert_bytes_match [2024-11-28 05:04:11,438 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_bytes_match [2024-11-28 05:04:11,438 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-28 05:04:11,439 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-28 05:04:11,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 05:04:11,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 05:04:11,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 05:04:11,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 05:04:11,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-28 05:04:11,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-28 05:04:11,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-28 05:04:11,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-28 05:04:11,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-28 05:04:11,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 05:04:11,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 05:04:11,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 05:04:11,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 05:04:11,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-28 05:04:11,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-28 05:04:11,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-28 05:04:11,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-28 05:04:11,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-28 05:04:11,955 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 05:04:11,958 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 05:04:22,104 INFO L? ?]: Removed 115 outVars from TransFormulas that were not future-live. [2024-11-28 05:04:22,105 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 05:04:22,130 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 05:04:22,130 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-28 05:04:22,131 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:04:22 BoogieIcfgContainer [2024-11-28 05:04:22,131 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 05:04:22,136 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 05:04:22,136 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 05:04:22,141 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 05:04:22,142 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:04:07" (1/3) ... [2024-11-28 05:04:22,143 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15d00285 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:04:22, skipping insertion in model container [2024-11-28 05:04:22,145 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:04:10" (2/3) ... [2024-11-28 05:04:22,145 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15d00285 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:04:22, skipping insertion in model container [2024-11-28 05:04:22,145 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:04:22" (3/3) ... [2024-11-28 05:04:22,147 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_append_with_lookup_harness_negated.i [2024-11-28 05:04:22,167 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 05:04:22,169 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_byte_buf_append_with_lookup_harness_negated.i that has 13 procedures, 164 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 05:04:22,254 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 05:04:22,271 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;@33817d59, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 05:04:22,271 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 05:04:22,279 INFO L276 IsEmpty]: Start isEmpty. Operand has 164 states, 106 states have (on average 1.2264150943396226) internal successors, (130), 107 states have internal predecessors, (130), 44 states have call successors, (44), 12 states have call predecessors, (44), 12 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-28 05:04:22,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-28 05:04:22,298 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:04:22,299 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:04:22,299 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:04:22,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:22,308 INFO L85 PathProgramCache]: Analyzing trace with hash -454301623, now seen corresponding path program 1 times [2024-11-28 05:04:22,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:22,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880398922] [2024-11-28 05:04:22,320 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:04:22,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:06:02,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:06:03,715 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-28 05:06:03,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:06:03,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880398922] [2024-11-28 05:06:03,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880398922] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:06:03,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185616639] [2024-11-28 05:06:03,719 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:06:03,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:06:03,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998742a0-4114-4430-9285-5e163c6ac651/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:06:03,725 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998742a0-4114-4430-9285-5e163c6ac651/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:06:03,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998742a0-4114-4430-9285-5e163c6ac651/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 05:07:47,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:07:47,353 INFO L256 TraceCheckSpWp]: Trace formula consists of 7741 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 05:07:47,371 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:07:47,393 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-28 05:07:47,393 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:07:47,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185616639] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:07:47,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:07:47,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 05:07:47,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575531974] [2024-11-28 05:07:47,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:07:47,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 05:07:47,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:07:47,423 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 05:07:47,423 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 05:07:47,426 INFO L87 Difference]: Start difference. First operand has 164 states, 106 states have (on average 1.2264150943396226) internal successors, (130), 107 states have internal predecessors, (130), 44 states have call successors, (44), 12 states have call predecessors, (44), 12 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 05:07:47,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:07:47,482 INFO L93 Difference]: Finished difference Result 324 states and 457 transitions. [2024-11-28 05:07:47,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 05:07:47,485 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 106 [2024-11-28 05:07:47,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:07:47,495 INFO L225 Difference]: With dead ends: 324 [2024-11-28 05:07:47,495 INFO L226 Difference]: Without dead ends: 159 [2024-11-28 05:07:47,501 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 107 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 05:07:47,505 INFO L435 NwaCegarLoop]: 215 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, 215 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 05:07:47,506 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:07:47,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-11-28 05:07:47,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2024-11-28 05:07:47,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 102 states have (on average 1.2058823529411764) internal successors, (123), 103 states have internal predecessors, (123), 44 states have call successors, (44), 12 states have call predecessors, (44), 12 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-11-28 05:07:47,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 210 transitions. [2024-11-28 05:07:47,568 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 210 transitions. Word has length 106 [2024-11-28 05:07:47,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:07:47,569 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 210 transitions. [2024-11-28 05:07:47,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 05:07:47,569 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 210 transitions. [2024-11-28 05:07:47,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-28 05:07:47,575 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:07:47,576 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:07:47,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998742a0-4114-4430-9285-5e163c6ac651/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 05:07:47,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998742a0-4114-4430-9285-5e163c6ac651/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-28 05:07:47,777 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:07:47,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:07:47,778 INFO L85 PathProgramCache]: Analyzing trace with hash 889441429, now seen corresponding path program 1 times [2024-11-28 05:07:47,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:07:47,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754161743] [2024-11-28 05:07:47,778 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:07:47,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:09:34,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:09:38,036 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2024-11-28 05:09:38,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:09:38,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754161743] [2024-11-28 05:09:38,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754161743] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:09:38,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376642109] [2024-11-28 05:09:38,037 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:09:38,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:09:38,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998742a0-4114-4430-9285-5e163c6ac651/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:09:38,040 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998742a0-4114-4430-9285-5e163c6ac651/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:09:38,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998742a0-4114-4430-9285-5e163c6ac651/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 05:11:22,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:11:22,380 INFO L256 TraceCheckSpWp]: Trace formula consists of 7741 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 05:11:22,392 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:11:23,066 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-28 05:11:23,067 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:11:23,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376642109] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:11:23,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:11:23,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2024-11-28 05:11:23,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754673047] [2024-11-28 05:11:23,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:11:23,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:11:23,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:11:23,069 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:11:23,069 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:11:23,070 INFO L87 Difference]: Start difference. First operand 159 states and 210 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-28 05:11:24,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:11:24,522 INFO L93 Difference]: Finished difference Result 304 states and 405 transitions. [2024-11-28 05:11:24,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:11:24,523 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 106 [2024-11-28 05:11:24,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:11:24,527 INFO L225 Difference]: With dead ends: 304 [2024-11-28 05:11:24,527 INFO L226 Difference]: Without dead ends: 162 [2024-11-28 05:11:24,529 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 103 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 05:11:24,530 INFO L435 NwaCegarLoop]: 162 mSDtfsCounter, 214 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:11:24,531 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 440 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 05:11:24,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-11-28 05:11:24,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2024-11-28 05:11:24,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 104 states have (on average 1.2019230769230769) internal successors, (125), 106 states have internal predecessors, (125), 44 states have call successors, (44), 12 states have call predecessors, (44), 13 states have return successors, (46), 43 states have call predecessors, (46), 43 states have call successors, (46) [2024-11-28 05:11:24,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 215 transitions. [2024-11-28 05:11:24,570 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 215 transitions. Word has length 106 [2024-11-28 05:11:24,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:11:24,570 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 215 transitions. [2024-11-28 05:11:24,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-28 05:11:24,571 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 215 transitions. [2024-11-28 05:11:24,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-28 05:11:24,574 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:11:24,574 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:11:24,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998742a0-4114-4430-9285-5e163c6ac651/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 05:11:24,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998742a0-4114-4430-9285-5e163c6ac651/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:11:24,775 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:11:24,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:11:24,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1173661480, now seen corresponding path program 1 times [2024-11-28 05:11:24,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:11:24,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188158357] [2024-11-28 05:11:24,776 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:11:24,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:13:04,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:13:06,519 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2024-11-28 05:13:06,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:13:06,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188158357] [2024-11-28 05:13:06,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188158357] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:13:06,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870970020] [2024-11-28 05:13:06,523 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:13:06,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:13:06,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998742a0-4114-4430-9285-5e163c6ac651/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:13:06,529 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998742a0-4114-4430-9285-5e163c6ac651/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:13:06,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998742a0-4114-4430-9285-5e163c6ac651/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 05:14:41,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:14:41,775 INFO L256 TraceCheckSpWp]: Trace formula consists of 7755 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 05:14:41,782 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:14:41,824 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-28 05:14:41,824 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:14:41,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870970020] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:14:41,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:14:41,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-28 05:14:41,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233628254] [2024-11-28 05:14:41,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:14:41,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:14:41,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:14:41,826 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:14:41,827 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:14:41,827 INFO L87 Difference]: Start difference. First operand 162 states and 215 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 05:14:41,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:14:41,956 INFO L93 Difference]: Finished difference Result 310 states and 417 transitions. [2024-11-28 05:14:41,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:14:41,956 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 112 [2024-11-28 05:14:41,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:14:41,962 INFO L225 Difference]: With dead ends: 310 [2024-11-28 05:14:41,963 INFO L226 Difference]: Without dead ends: 165 [2024-11-28 05:14:41,965 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:14:41,966 INFO L435 NwaCegarLoop]: 207 mSDtfsCounter, 1 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:14:41,967 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 615 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:14:41,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-11-28 05:14:41,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 164. [2024-11-28 05:14:41,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 106 states have (on average 1.1981132075471699) internal successors, (127), 108 states have internal predecessors, (127), 44 states have call successors, (44), 12 states have call predecessors, (44), 13 states have return successors, (46), 43 states have call predecessors, (46), 43 states have call successors, (46) [2024-11-28 05:14:41,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 217 transitions. [2024-11-28 05:14:41,986 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 217 transitions. Word has length 112 [2024-11-28 05:14:41,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:14:41,986 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 217 transitions. [2024-11-28 05:14:41,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 05:14:41,987 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 217 transitions. [2024-11-28 05:14:41,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-28 05:14:41,989 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:14:41,989 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:14:42,019 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998742a0-4114-4430-9285-5e163c6ac651/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 05:14:42,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998742a0-4114-4430-9285-5e163c6ac651/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:14:42,190 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:14:42,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:14:42,190 INFO L85 PathProgramCache]: Analyzing trace with hash 31159014, now seen corresponding path program 1 times [2024-11-28 05:14:42,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:14:42,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118577584] [2024-11-28 05:14:42,191 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:14:42,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:16:15,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:16:17,755 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2024-11-28 05:16:17,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:16:17,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118577584] [2024-11-28 05:16:17,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118577584] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:16:17,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509687182] [2024-11-28 05:16:17,756 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:16:17,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:16:17,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998742a0-4114-4430-9285-5e163c6ac651/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:16:17,760 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998742a0-4114-4430-9285-5e163c6ac651/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:16:17,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998742a0-4114-4430-9285-5e163c6ac651/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 05:17:58,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:17:58,128 INFO L256 TraceCheckSpWp]: Trace formula consists of 7750 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 05:17:58,137 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:17:58,180 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-28 05:17:58,181 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:17:58,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509687182] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:17:58,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:17:58,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-28 05:17:58,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235963120] [2024-11-28 05:17:58,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:17:58,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:17:58,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:17:58,183 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:17:58,183 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:17:58,184 INFO L87 Difference]: Start difference. First operand 164 states and 217 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 05:17:58,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:17:58,344 INFO L93 Difference]: Finished difference Result 313 states and 420 transitions. [2024-11-28 05:17:58,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:17:58,345 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 112 [2024-11-28 05:17:58,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:17:58,348 INFO L225 Difference]: With dead ends: 313 [2024-11-28 05:17:58,348 INFO L226 Difference]: Without dead ends: 166 [2024-11-28 05:17:58,349 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:17:58,350 INFO L435 NwaCegarLoop]: 208 mSDtfsCounter, 0 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:17:58,351 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 616 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:17:58,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-11-28 05:17:58,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2024-11-28 05:17:58,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 108 states have (on average 1.1944444444444444) internal successors, (129), 110 states have internal predecessors, (129), 44 states have call successors, (44), 12 states have call predecessors, (44), 13 states have return successors, (46), 43 states have call predecessors, (46), 43 states have call successors, (46) [2024-11-28 05:17:58,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 219 transitions. [2024-11-28 05:17:58,370 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 219 transitions. Word has length 112 [2024-11-28 05:17:58,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:17:58,371 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 219 transitions. [2024-11-28 05:17:58,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 05:17:58,371 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 219 transitions. [2024-11-28 05:17:58,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-28 05:17:58,373 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:17:58,374 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:17:58,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998742a0-4114-4430-9285-5e163c6ac651/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 05:17:58,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_998742a0-4114-4430-9285-5e163c6ac651/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:17:58,575 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:17:58,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:17:58,576 INFO L85 PathProgramCache]: Analyzing trace with hash -393096470, now seen corresponding path program 1 times [2024-11-28 05:17:58,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:17:58,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31126409] [2024-11-28 05:17:58,576 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:17:58,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms