./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47d35e3-03e6-477a-957b-ce3b3cdf2fcc/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47d35e3-03e6-477a-957b-ce3b3cdf2fcc/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47d35e3-03e6-477a-957b-ce3b3cdf2fcc/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47d35e3-03e6-477a-957b-ce3b3cdf2fcc/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47d35e3-03e6-477a-957b-ce3b3cdf2fcc/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47d35e3-03e6-477a-957b-ce3b3cdf2fcc/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 675ab2caa96cd9b2eb6b721efd0b1d83fbee049c822d5b953bd418a0212be644 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:55:20,372 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:55:20,492 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47d35e3-03e6-477a-957b-ce3b3cdf2fcc/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-24 01:55:20,499 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:55:20,500 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:55:20,532 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:55:20,533 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:55:20,533 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:55:20,534 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:55:20,534 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:55:20,534 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:55:20,534 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:55:20,535 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:55:20,535 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:55:20,535 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:55:20,536 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:55:20,536 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 01:55:20,536 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 01:55:20,536 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:55:20,536 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 01:55:20,537 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:55:20,537 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 01:55:20,537 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 01:55:20,537 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:55:20,537 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:55:20,537 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:55:20,538 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:55:20,538 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:55:20,538 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:55:20,538 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:55:20,539 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:55:20,539 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:55:20,539 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:55:20,539 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:55:20,539 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:55:20,540 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:55:20,540 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:55:20,540 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 01:55:20,540 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 01:55:20,540 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 01:55:20,540 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 01:55:20,540 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:55:20,540 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:55:20,540 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:55:20,541 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:55:20,541 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_d47d35e3-03e6-477a-957b-ce3b3cdf2fcc/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 675ab2caa96cd9b2eb6b721efd0b1d83fbee049c822d5b953bd418a0212be644 [2024-11-24 01:55:20,960 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:55:20,972 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:55:20,975 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:55:20,977 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:55:20,977 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:55:20,979 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47d35e3-03e6-477a-957b-ce3b3cdf2fcc/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i [2024-11-24 01:55:24,988 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47d35e3-03e6-477a-957b-ce3b3cdf2fcc/bin/uautomizer-verify-LYvppIcaGC/data/0545a9b35/7c542a09061d44b0a815f68afeff3667/FLAG555c3d1be [2024-11-24 01:55:25,755 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:55:25,759 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47d35e3-03e6-477a-957b-ce3b3cdf2fcc/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i [2024-11-24 01:55:25,821 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47d35e3-03e6-477a-957b-ce3b3cdf2fcc/bin/uautomizer-verify-LYvppIcaGC/data/0545a9b35/7c542a09061d44b0a815f68afeff3667/FLAG555c3d1be [2024-11-24 01:55:25,854 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47d35e3-03e6-477a-957b-ce3b3cdf2fcc/bin/uautomizer-verify-LYvppIcaGC/data/0545a9b35/7c542a09061d44b0a815f68afeff3667 [2024-11-24 01:55:25,859 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:55:25,863 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:55:25,864 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:55:25,865 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:55:25,873 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:55:25,874 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:55:25" (1/1) ... [2024-11-24 01:55:25,877 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7178b243 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:55:25, skipping insertion in model container [2024-11-24 01:55:25,877 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:55:25" (1/1) ... [2024-11-24 01:55:26,017 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:55:26,423 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_d47d35e3-03e6-477a-957b-ce3b3cdf2fcc/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4493,4506] [2024-11-24 01:55:26,434 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_d47d35e3-03e6-477a-957b-ce3b3cdf2fcc/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4553,4566] [2024-11-24 01:55:27,776 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:55:27,777 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:55:27,777 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:55:27,779 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:55:27,780 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:55:27,832 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:55:27,833 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:55:27,840 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:55:27,841 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:55:28,813 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:55:28,814 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:55:28,941 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:55:29,045 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:55:29,063 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_d47d35e3-03e6-477a-957b-ce3b3cdf2fcc/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4493,4506] [2024-11-24 01:55:29,064 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_d47d35e3-03e6-477a-957b-ce3b3cdf2fcc/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4553,4566] [2024-11-24 01:55:29,179 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:55:29,180 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:55:29,181 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:55:29,182 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:55:29,183 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:55:29,196 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:55:29,196 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:55:29,198 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:55:29,198 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:55:29,382 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8291] [2024-11-24 01:55:29,385 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:55:29,385 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 01:55:29,410 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8777-8788] [2024-11-24 01:55:29,444 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:55:29,924 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:55:29,926 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:55:29 WrapperNode [2024-11-24 01:55:29,927 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:55:29,928 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:55:29,929 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:55:29,929 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:55:29,946 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:55:29" (1/1) ... [2024-11-24 01:55:30,080 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:55:29" (1/1) ... [2024-11-24 01:55:30,231 INFO L138 Inliner]: procedures = 680, calls = 2643, calls flagged for inlining = 60, calls inlined = 8, statements flattened = 869 [2024-11-24 01:55:30,231 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:55:30,233 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:55:30,233 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:55:30,234 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:55:30,248 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:55:29" (1/1) ... [2024-11-24 01:55:30,249 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:55:29" (1/1) ... [2024-11-24 01:55:30,261 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:55:29" (1/1) ... [2024-11-24 01:55:30,384 INFO L175 MemorySlicer]: Split 574 memory accesses to 8 slices as follows [2, 257, 238, 33, 4, 9, 9, 22]. 45 percent of accesses are in the largest equivalence class. The 25 initializations are split as follows [2, 0, 6, 4, 2, 4, 5, 2]. The 494 writes are split as follows [0, 257, 232, 3, 0, 0, 1, 1]. [2024-11-24 01:55:30,385 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:55:29" (1/1) ... [2024-11-24 01:55:30,385 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:55:29" (1/1) ... [2024-11-24 01:55:30,468 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:55:29" (1/1) ... [2024-11-24 01:55:30,474 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:55:29" (1/1) ... [2024-11-24 01:55:30,487 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:55:29" (1/1) ... [2024-11-24 01:55:30,509 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:55:29" (1/1) ... [2024-11-24 01:55:30,524 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:55:29" (1/1) ... [2024-11-24 01:55:30,543 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:55:30,545 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:55:30,545 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:55:30,545 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:55:30,549 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:55:29" (1/1) ... [2024-11-24 01:55:30,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:55:30,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47d35e3-03e6-477a-957b-ce3b3cdf2fcc/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:55:30,603 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47d35e3-03e6-477a-957b-ce3b3cdf2fcc/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:55:30,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47d35e3-03e6-477a-957b-ce3b3cdf2fcc/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:55:30,651 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2024-11-24 01:55:30,652 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2024-11-24 01:55:30,652 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2024-11-24 01:55:30,653 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2024-11-24 01:55:30,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-24 01:55:30,653 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-24 01:55:30,654 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-24 01:55:30,654 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_append [2024-11-24 01:55:30,654 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_append [2024-11-24 01:55:30,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-24 01:55:30,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-24 01:55:30,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-24 01:55:30,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-24 01:55:30,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-24 01:55:30,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-24 01:55:30,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2024-11-24 01:55:30,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2024-11-24 01:55:30,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-24 01:55:30,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-24 01:55:30,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-24 01:55:30,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-24 01:55:30,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-24 01:55:30,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-24 01:55:30,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-24 01:55:30,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-24 01:55:30,657 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2024-11-24 01:55:30,657 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2024-11-24 01:55:30,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-24 01:55:30,658 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-24 01:55:30,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-24 01:55:30,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 01:55:30,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-24 01:55:30,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-24 01:55:30,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-24 01:55:30,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-24 01:55:30,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-24 01:55:30,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-24 01:55:30,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-24 01:55:30,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-24 01:55:30,658 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2024-11-24 01:55:30,658 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2024-11-24 01:55:30,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:55:30,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:55:30,659 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-24 01:55:30,662 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-24 01:55:30,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-24 01:55:30,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-24 01:55:30,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-24 01:55:30,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-24 01:55:30,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-24 01:55:30,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-11-24 01:55:30,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2024-11-24 01:55:30,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2024-11-24 01:55:30,663 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-24 01:55:30,663 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-24 01:55:30,663 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2024-11-24 01:55:30,663 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2024-11-24 01:55:30,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-24 01:55:30,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-24 01:55:30,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-24 01:55:30,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-24 01:55:30,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-24 01:55:30,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-24 01:55:30,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-24 01:55:30,664 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-24 01:55:30,664 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-24 01:55:30,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-24 01:55:30,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-24 01:55:30,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-24 01:55:30,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-24 01:55:30,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-24 01:55:30,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-24 01:55:30,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-24 01:55:30,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2024-11-24 01:55:30,664 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-11-24 01:55:30,664 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-11-24 01:55:30,664 INFO L130 BoogieDeclarations]: Found specification of procedure assert_bytes_match [2024-11-24 01:55:30,665 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_bytes_match [2024-11-24 01:55:30,665 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-24 01:55:30,665 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-24 01:55:30,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-24 01:55:30,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-24 01:55:30,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-24 01:55:30,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-24 01:55:30,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-24 01:55:30,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-24 01:55:30,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-24 01:55:30,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-24 01:55:30,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 01:55:30,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-24 01:55:30,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-24 01:55:30,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-24 01:55:30,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-24 01:55:30,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-24 01:55:30,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-24 01:55:30,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-24 01:55:31,187 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:55:31,190 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:55:41,678 INFO L? ?]: Removed 97 outVars from TransFormulas that were not future-live. [2024-11-24 01:55:41,678 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:55:41,695 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:55:41,696 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-24 01:55:41,696 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:55:41 BoogieIcfgContainer [2024-11-24 01:55:41,697 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:55:41,699 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 01:55:41,700 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 01:55:41,706 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 01:55:41,707 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:55:25" (1/3) ... [2024-11-24 01:55:41,707 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52f648d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:55:41, skipping insertion in model container [2024-11-24 01:55:41,708 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:55:29" (2/3) ... [2024-11-24 01:55:41,708 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52f648d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:55:41, skipping insertion in model container [2024-11-24 01:55:41,708 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:55:41" (3/3) ... [2024-11-24 01:55:41,710 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_append_harness.i [2024-11-24 01:55:41,731 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 01:55:41,733 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_byte_buf_append_harness.i that has 14 procedures, 170 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-24 01:55:41,828 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 01:55:41,847 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;@698658ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 01:55:41,848 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 01:55:41,857 INFO L276 IsEmpty]: Start isEmpty. Operand has 170 states, 107 states have (on average 1.2149532710280373) internal successors, (130), 108 states have internal predecessors, (130), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-24 01:55:41,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-24 01:55:41,874 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:55:41,876 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:55:41,876 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:55:41,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:55:41,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1551601725, now seen corresponding path program 1 times [2024-11-24 01:55:41,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:55:41,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031485521] [2024-11-24 01:55:41,898 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:41,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:57:56,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:57:57,966 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-24 01:57:57,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:57:57,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031485521] [2024-11-24 01:57:57,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031485521] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:57:57,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625713877] [2024-11-24 01:57:57,970 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:57:57,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:57:57,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47d35e3-03e6-477a-957b-ce3b3cdf2fcc/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:57:57,973 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47d35e3-03e6-477a-957b-ce3b3cdf2fcc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:57:57,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47d35e3-03e6-477a-957b-ce3b3cdf2fcc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 02:00:14,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:00:14,840 INFO L256 TraceCheckSpWp]: Trace formula consists of 7723 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-24 02:00:14,855 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:00:14,878 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-24 02:00:14,878 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 02:00:14,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625713877] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:00:14,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 02:00:14,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-24 02:00:14,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513362897] [2024-11-24 02:00:14,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:00:14,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 02:00:14,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:00:14,911 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 02:00:14,912 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 02:00:14,915 INFO L87 Difference]: Start difference. First operand has 170 states, 107 states have (on average 1.2149532710280373) internal successors, (130), 108 states have internal predecessors, (130), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-24 02:00:14,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:00:14,971 INFO L93 Difference]: Finished difference Result 336 states and 480 transitions. [2024-11-24 02:00:14,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 02:00:14,974 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) Word has length 97 [2024-11-24 02:00:14,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:00:14,992 INFO L225 Difference]: With dead ends: 336 [2024-11-24 02:00:14,992 INFO L226 Difference]: Without dead ends: 165 [2024-11-24 02:00:15,000 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 02:00:15,006 INFO L435 NwaCegarLoop]: 223 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, 223 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 02:00:15,007 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 02:00:15,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-11-24 02:00:15,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2024-11-24 02:00:15,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 103 states have (on average 1.1941747572815533) internal successors, (123), 104 states have internal predecessors, (123), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-11-24 02:00:15,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 218 transitions. [2024-11-24 02:00:15,102 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 218 transitions. Word has length 97 [2024-11-24 02:00:15,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:00:15,104 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 218 transitions. [2024-11-24 02:00:15,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-24 02:00:15,106 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 218 transitions. [2024-11-24 02:00:15,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-24 02:00:15,112 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:00:15,113 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:00:15,146 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47d35e3-03e6-477a-957b-ce3b3cdf2fcc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 02:00:15,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47d35e3-03e6-477a-957b-ce3b3cdf2fcc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-24 02:00:15,314 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:00:15,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:00:15,315 INFO L85 PathProgramCache]: Analyzing trace with hash -435313613, now seen corresponding path program 1 times [2024-11-24 02:00:15,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:00:15,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448333789] [2024-11-24 02:00:15,315 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:00:15,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:02:24,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:02:29,098 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2024-11-24 02:02:29,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:02:29,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448333789] [2024-11-24 02:02:29,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448333789] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:02:29,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434293019] [2024-11-24 02:02:29,099 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:02:29,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:02:29,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47d35e3-03e6-477a-957b-ce3b3cdf2fcc/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:02:29,102 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47d35e3-03e6-477a-957b-ce3b3cdf2fcc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:02:29,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47d35e3-03e6-477a-957b-ce3b3cdf2fcc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 02:04:36,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:04:36,349 INFO L256 TraceCheckSpWp]: Trace formula consists of 7723 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-24 02:04:36,359 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:04:37,381 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 58 proven. 15 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-24 02:04:37,382 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:04:38,650 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2024-11-24 02:04:38,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434293019] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 02:04:38,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 02:04:38,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 11 [2024-11-24 02:04:38,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364633854] [2024-11-24 02:04:38,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 02:04:38,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 02:04:38,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:04:38,653 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 02:04:38,653 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-24 02:04:38,654 INFO L87 Difference]: Start difference. First operand 165 states and 218 transitions. Second operand has 11 states, 11 states have (on average 8.909090909090908) internal successors, (98), 11 states have internal predecessors, (98), 7 states have call successors, (38), 3 states have call predecessors, (38), 5 states have return successors, (36), 7 states have call predecessors, (36), 7 states have call successors, (36) [2024-11-24 02:04:40,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:04:40,707 INFO L93 Difference]: Finished difference Result 319 states and 428 transitions. [2024-11-24 02:04:40,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 02:04:40,708 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.909090909090908) internal successors, (98), 11 states have internal predecessors, (98), 7 states have call successors, (38), 3 states have call predecessors, (38), 5 states have return successors, (36), 7 states have call predecessors, (36), 7 states have call successors, (36) Word has length 97 [2024-11-24 02:04:40,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:04:40,713 INFO L225 Difference]: With dead ends: 319 [2024-11-24 02:04:40,713 INFO L226 Difference]: Without dead ends: 171 [2024-11-24 02:04:40,715 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 187 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2024-11-24 02:04:40,716 INFO L435 NwaCegarLoop]: 173 mSDtfsCounter, 220 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 989 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-24 02:04:40,717 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 989 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-24 02:04:40,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-11-24 02:04:40,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2024-11-24 02:04:40,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 107 states have (on average 1.1869158878504673) internal successors, (127), 110 states have internal predecessors, (127), 48 states have call successors, (48), 13 states have call predecessors, (48), 15 states have return successors, (53), 47 states have call predecessors, (53), 47 states have call successors, (53) [2024-11-24 02:04:40,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 228 transitions. [2024-11-24 02:04:40,745 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 228 transitions. Word has length 97 [2024-11-24 02:04:40,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:04:40,745 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 228 transitions. [2024-11-24 02:04:40,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.909090909090908) internal successors, (98), 11 states have internal predecessors, (98), 7 states have call successors, (38), 3 states have call predecessors, (38), 5 states have return successors, (36), 7 states have call predecessors, (36), 7 states have call successors, (36) [2024-11-24 02:04:40,746 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 228 transitions. [2024-11-24 02:04:40,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-24 02:04:40,749 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:04:40,749 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:04:40,779 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47d35e3-03e6-477a-957b-ce3b3cdf2fcc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-24 02:04:40,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47d35e3-03e6-477a-957b-ce3b3cdf2fcc/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-24 02:04:40,950 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:04:40,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:04:40,951 INFO L85 PathProgramCache]: Analyzing trace with hash 188239619, now seen corresponding path program 1 times [2024-11-24 02:04:40,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:04:40,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444537150] [2024-11-24 02:04:40,951 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:04:40,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:06:34,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:06:37,648 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2024-11-24 02:06:37,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:06:37,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444537150] [2024-11-24 02:06:37,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444537150] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:06:37,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:06:37,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 02:06:37,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091866629] [2024-11-24 02:06:37,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:06:37,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 02:06:37,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:06:37,655 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 02:06:37,655 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-24 02:06:37,659 INFO L87 Difference]: Start difference. First operand 171 states and 228 transitions. Second operand has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 4 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-24 02:06:38,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:06:38,235 INFO L93 Difference]: Finished difference Result 300 states and 401 transitions. [2024-11-24 02:06:38,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 02:06:38,236 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 4 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) Word has length 105 [2024-11-24 02:06:38,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:06:38,239 INFO L225 Difference]: With dead ends: 300 [2024-11-24 02:06:38,239 INFO L226 Difference]: Without dead ends: 168 [2024-11-24 02:06:38,240 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-24 02:06:38,241 INFO L435 NwaCegarLoop]: 203 mSDtfsCounter, 46 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-24 02:06:38,242 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 909 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-24 02:06:38,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-11-24 02:06:38,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2024-11-24 02:06:38,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 105 states have (on average 1.180952380952381) internal successors, (124), 107 states have internal predecessors, (124), 48 states have call successors, (48), 13 states have call predecessors, (48), 14 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2024-11-24 02:06:38,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 222 transitions. [2024-11-24 02:06:38,265 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 222 transitions. Word has length 105 [2024-11-24 02:06:38,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:06:38,266 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 222 transitions. [2024-11-24 02:06:38,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 4 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-24 02:06:38,266 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 222 transitions. [2024-11-24 02:06:38,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-24 02:06:38,268 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:06:38,269 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:06:38,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 02:06:38,269 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:06:38,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:06:38,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1990984498, now seen corresponding path program 1 times [2024-11-24 02:06:38,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:06:38,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972382910] [2024-11-24 02:06:38,270 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:06:38,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:08:21,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:08:24,810 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2024-11-24 02:08:24,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:08:24,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972382910] [2024-11-24 02:08:24,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972382910] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:08:24,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:08:24,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 02:08:24,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619355875] [2024-11-24 02:08:24,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:08:24,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 02:08:24,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:08:24,812 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 02:08:24,812 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-24 02:08:24,812 INFO L87 Difference]: Start difference. First operand 168 states and 222 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-24 02:08:25,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:08:25,271 INFO L93 Difference]: Finished difference Result 291 states and 384 transitions. [2024-11-24 02:08:25,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 02:08:25,271 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 111 [2024-11-24 02:08:25,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:08:25,274 INFO L225 Difference]: With dead ends: 291 [2024-11-24 02:08:25,274 INFO L226 Difference]: Without dead ends: 165 [2024-11-24 02:08:25,274 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-24 02:08:25,275 INFO L435 NwaCegarLoop]: 203 mSDtfsCounter, 43 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 02:08:25,276 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 923 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 02:08:25,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-11-24 02:08:25,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2024-11-24 02:08:25,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 103 states have (on average 1.174757281553398) internal successors, (121), 104 states have internal predecessors, (121), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-11-24 02:08:25,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 216 transitions. [2024-11-24 02:08:25,294 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 216 transitions. Word has length 111 [2024-11-24 02:08:25,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:08:25,294 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 216 transitions. [2024-11-24 02:08:25,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-24 02:08:25,295 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 216 transitions. [2024-11-24 02:08:25,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-24 02:08:25,296 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:08:25,296 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:08:25,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 02:08:25,297 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:08:25,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:08:25,297 INFO L85 PathProgramCache]: Analyzing trace with hash -256882029, now seen corresponding path program 1 times [2024-11-24 02:08:25,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:08:25,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817180572] [2024-11-24 02:08:25,298 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:08:25,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:10:07,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:10:13,902 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2024-11-24 02:10:13,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:10:13,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817180572] [2024-11-24 02:10:13,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817180572] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:10:13,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:10:13,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 02:10:13,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383736176] [2024-11-24 02:10:13,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:10:13,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 02:10:13,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:10:13,906 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 02:10:13,906 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-24 02:10:13,907 INFO L87 Difference]: Start difference. First operand 165 states and 216 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14)