./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e91fc4-3d53-4d32-9092-34f9c6b50be4/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e91fc4-3d53-4d32-9092-34f9c6b50be4/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e91fc4-3d53-4d32-9092-34f9c6b50be4/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e91fc4-3d53-4d32-9092-34f9c6b50be4/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e91fc4-3d53-4d32-9092-34f9c6b50be4/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e91fc4-3d53-4d32-9092-34f9c6b50be4/bin/uautomizer-verify-84ZbGMXZE1 --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 3e644a292a4c5d5b549b88d9030b75ad2c804a7dc6b4d8e0c5760a8e3b5148d0 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 15:50:17,117 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 15:50:17,178 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e91fc4-3d53-4d32-9092-34f9c6b50be4/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-12-02 15:50:17,183 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 15:50:17,184 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 15:50:17,205 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 15:50:17,206 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 15:50:17,206 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 15:50:17,207 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 15:50:17,207 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 15:50:17,207 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 15:50:17,207 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 15:50:17,207 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 15:50:17,207 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 15:50:17,207 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 15:50:17,208 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 15:50:17,208 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 15:50:17,208 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 15:50:17,208 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 15:50:17,208 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 15:50:17,208 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 15:50:17,208 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 15:50:17,208 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 15:50:17,208 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 15:50:17,208 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 15:50:17,208 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 15:50:17,209 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 15:50:17,209 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 15:50:17,209 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 15:50:17,209 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:50:17,209 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 15:50:17,209 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 15:50:17,209 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 15:50:17,209 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 15:50:17,209 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:50:17,209 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 15:50:17,210 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 15:50:17,210 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 15:50:17,210 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 15:50:17,210 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 15:50:17,210 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 15:50:17,210 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 15:50:17,210 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 15:50:17,210 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 15:50:17,210 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 15:50:17,210 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_f9e91fc4-3d53-4d32-9092-34f9c6b50be4/bin/uautomizer-verify-84ZbGMXZE1 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 -> 3e644a292a4c5d5b549b88d9030b75ad2c804a7dc6b4d8e0c5760a8e3b5148d0 [2024-12-02 15:50:17,459 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 15:50:17,468 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 15:50:17,470 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 15:50:17,472 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 15:50:17,472 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 15:50:17,473 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e91fc4-3d53-4d32-9092-34f9c6b50be4/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness.i [2024-12-02 15:50:20,099 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e91fc4-3d53-4d32-9092-34f9c6b50be4/bin/uautomizer-verify-84ZbGMXZE1/data/360046953/d77b035933d64558a113df1070d125b8/FLAG618cdfd0e [2024-12-02 15:50:20,526 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 15:50:20,526 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e91fc4-3d53-4d32-9092-34f9c6b50be4/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness.i [2024-12-02 15:50:20,554 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e91fc4-3d53-4d32-9092-34f9c6b50be4/bin/uautomizer-verify-84ZbGMXZE1/data/360046953/d77b035933d64558a113df1070d125b8/FLAG618cdfd0e [2024-12-02 15:50:20,670 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e91fc4-3d53-4d32-9092-34f9c6b50be4/bin/uautomizer-verify-84ZbGMXZE1/data/360046953/d77b035933d64558a113df1070d125b8 [2024-12-02 15:50:20,672 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 15:50:20,673 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 15:50:20,675 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 15:50:20,675 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 15:50:20,680 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 15:50:20,681 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:50:20" (1/1) ... [2024-12-02 15:50:20,681 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2caf406b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:20, skipping insertion in model container [2024-12-02 15:50:20,682 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:50:20" (1/1) ... [2024-12-02 15:50:20,749 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 15:50:20,976 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_f9e91fc4-3d53-4d32-9092-34f9c6b50be4/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness.i[4510,4523] [2024-12-02 15:50:20,983 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_f9e91fc4-3d53-4d32-9092-34f9c6b50be4/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness.i[4570,4583] [2024-12-02 15:50:21,900 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:50:21,901 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:50:21,902 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:50:21,903 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:50:21,904 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:50:21,918 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:50:21,919 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:50:21,921 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:50:21,922 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:50:22,755 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:50:22,756 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:50:22,819 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 15:50:22,865 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 15:50:22,878 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_f9e91fc4-3d53-4d32-9092-34f9c6b50be4/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness.i[4510,4523] [2024-12-02 15:50:22,879 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_f9e91fc4-3d53-4d32-9092-34f9c6b50be4/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness.i[4570,4583] [2024-12-02 15:50:22,916 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:50:22,916 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:50:22,916 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:50:22,917 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:50:22,917 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:50:22,923 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:50:22,924 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:50:22,924 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:50:22,925 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:50:23,029 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8291] [2024-12-02 15:50:23,031 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:50:23,032 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:50:23,046 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8777-8788] [2024-12-02 15:50:23,059 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 15:50:23,266 INFO L204 MainTranslator]: Completed translation [2024-12-02 15:50:23,266 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:23 WrapperNode [2024-12-02 15:50:23,266 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 15:50:23,267 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 15:50:23,267 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 15:50:23,267 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 15:50:23,274 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:23" (1/1) ... [2024-12-02 15:50:23,327 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:23" (1/1) ... [2024-12-02 15:50:23,382 INFO L138 Inliner]: procedures = 680, calls = 2658, calls flagged for inlining = 59, calls inlined = 6, statements flattened = 920 [2024-12-02 15:50:23,383 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 15:50:23,383 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 15:50:23,383 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 15:50:23,384 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 15:50:23,394 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:23" (1/1) ... [2024-12-02 15:50:23,394 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:23" (1/1) ... [2024-12-02 15:50:23,400 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:23" (1/1) ... [2024-12-02 15:50:23,465 INFO L175 MemorySlicer]: Split 592 memory accesses to 5 slices as follows [78, 2, 257, 249, 6]. 43 percent of accesses are in the largest equivalence class. The 29 initializations are split as follows [16, 2, 0, 11, 0]. The 499 writes are split as follows [7, 0, 257, 233, 2]. [2024-12-02 15:50:23,466 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:23" (1/1) ... [2024-12-02 15:50:23,466 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:23" (1/1) ... [2024-12-02 15:50:23,499 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:23" (1/1) ... [2024-12-02 15:50:23,502 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:23" (1/1) ... [2024-12-02 15:50:23,505 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:23" (1/1) ... [2024-12-02 15:50:23,514 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:23" (1/1) ... [2024-12-02 15:50:23,518 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:23" (1/1) ... [2024-12-02 15:50:23,528 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 15:50:23,529 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 15:50:23,529 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 15:50:23,529 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 15:50:23,530 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:23" (1/1) ... [2024-12-02 15:50:23,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:50:23,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e91fc4-3d53-4d32-9092-34f9c6b50be4/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:50:23,560 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e91fc4-3d53-4d32-9092-34f9c6b50be4/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 15:50:23,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e91fc4-3d53-4d32-9092-34f9c6b50be4/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 15:50:23,602 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2024-12-02 15:50:23,602 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2024-12-02 15:50:23,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 15:50:23,602 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-12-02 15:50:23,602 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-12-02 15:50:23,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-12-02 15:50:23,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-12-02 15:50:23,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-12-02 15:50:23,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-12-02 15:50:23,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-12-02 15:50:23,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 15:50:23,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 15:50:23,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-12-02 15:50:23,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-12-02 15:50:23,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-12-02 15:50:23,602 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-12-02 15:50:23,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-12-02 15:50:23,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 15:50:23,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 15:50:23,603 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2024-12-02 15:50:23,603 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2024-12-02 15:50:23,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-12-02 15:50:23,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-12-02 15:50:23,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-12-02 15:50:23,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-12-02 15:50:23,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-12-02 15:50:23,603 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2024-12-02 15:50:23,603 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2024-12-02 15:50:23,603 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_buf_has_allocated_buffer_member [2024-12-02 15:50:23,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_buf_has_allocated_buffer_member [2024-12-02 15:50:23,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 15:50:23,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 15:50:23,603 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-12-02 15:50:23,603 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-12-02 15:50:23,603 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2024-12-02 15:50:23,604 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2024-12-02 15:50:23,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-12-02 15:50:23,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-12-02 15:50:23,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-12-02 15:50:23,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-12-02 15:50:23,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-12-02 15:50:23,604 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 15:50:23,604 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 15:50:23,604 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2024-12-02 15:50:23,604 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2024-12-02 15:50:23,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-02 15:50:23,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-12-02 15:50:23,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-12-02 15:50:23,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-12-02 15:50:23,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-12-02 15:50:23,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-12-02 15:50:23,604 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_write [2024-12-02 15:50:23,604 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_write [2024-12-02 15:50:23,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-12-02 15:50:23,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-12-02 15:50:23,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-12-02 15:50:23,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-12-02 15:50:23,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-12-02 15:50:23,605 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-12-02 15:50:23,605 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-12-02 15:50:23,605 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-12-02 15:50:23,605 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-12-02 15:50:23,605 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_bounded [2024-12-02 15:50:23,605 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_bounded [2024-12-02 15:50:23,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 15:50:23,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 15:50:23,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-12-02 15:50:23,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-12-02 15:50:23,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-12-02 15:50:23,605 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_buf_equivalence [2024-12-02 15:50:23,605 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_buf_equivalence [2024-12-02 15:50:23,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 15:50:23,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 15:50:23,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 15:50:23,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 15:50:23,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-02 15:50:23,851 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 15:50:23,853 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 15:50:31,797 INFO L? ?]: Removed 114 outVars from TransFormulas that were not future-live. [2024-12-02 15:50:31,797 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 15:50:31,809 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 15:50:31,809 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-12-02 15:50:31,810 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:50:31 BoogieIcfgContainer [2024-12-02 15:50:31,810 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 15:50:31,812 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 15:50:31,812 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 15:50:31,816 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 15:50:31,816 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:50:20" (1/3) ... [2024-12-02 15:50:31,817 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63a5f528 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:50:31, skipping insertion in model container [2024-12-02 15:50:31,817 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:50:23" (2/3) ... [2024-12-02 15:50:31,817 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63a5f528 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:50:31, skipping insertion in model container [2024-12-02 15:50:31,817 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:50:31" (3/3) ... [2024-12-02 15:50:31,818 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_from_whole_buffer_harness.i [2024-12-02 15:50:31,833 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 15:50:31,834 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_byte_buf_write_from_whole_buffer_harness.i that has 16 procedures, 175 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 15:50:31,890 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 15:50:31,902 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;@1aca1cb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 15:50:31,902 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 15:50:31,907 INFO L276 IsEmpty]: Start isEmpty. Operand has 175 states, 105 states have (on average 1.2190476190476192) internal successors, (128), 107 states have internal predecessors, (128), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2024-12-02 15:50:31,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-12-02 15:50:31,919 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:50:31,920 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 2, 2, 2, 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, 1, 1, 1, 1] [2024-12-02 15:50:31,921 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:50:31,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:50:31,926 INFO L85 PathProgramCache]: Analyzing trace with hash -710663743, now seen corresponding path program 1 times [2024-12-02 15:50:31,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:50:31,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84752603] [2024-12-02 15:50:31,934 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:50:31,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:51:55,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:51:56,586 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-12-02 15:51:56,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:51:56,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84752603] [2024-12-02 15:51:56,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84752603] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:51:56,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131062746] [2024-12-02 15:51:56,588 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:51:56,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:51:56,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e91fc4-3d53-4d32-9092-34f9c6b50be4/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:51:56,591 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e91fc4-3d53-4d32-9092-34f9c6b50be4/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:51:56,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e91fc4-3d53-4d32-9092-34f9c6b50be4/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 15:53:22,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:53:22,057 INFO L256 TraceCheckSpWp]: Trace formula consists of 8080 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 15:53:22,070 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:53:22,093 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2024-12-02 15:53:22,093 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 15:53:22,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131062746] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:53:22,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 15:53:22,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 15:53:22,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244412589] [2024-12-02 15:53:22,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:53:22,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 15:53:22,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:53:22,115 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 15:53:22,115 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 15:53:22,117 INFO L87 Difference]: Start difference. First operand has 175 states, 105 states have (on average 1.2190476190476192) internal successors, (128), 107 states have internal predecessors, (128), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) Second operand has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-12-02 15:53:22,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:53:22,157 INFO L93 Difference]: Finished difference Result 346 states and 501 transitions. [2024-12-02 15:53:22,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 15:53:22,158 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 156 [2024-12-02 15:53:22,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:53:22,166 INFO L225 Difference]: With dead ends: 346 [2024-12-02 15:53:22,167 INFO L226 Difference]: Without dead ends: 170 [2024-12-02 15:53:22,171 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 15:53:22,174 INFO L435 NwaCegarLoop]: 231 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, 231 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 [2024-12-02 15:53:22,174 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:53:22,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-12-02 15:53:22,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2024-12-02 15:53:22,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 101 states have (on average 1.198019801980198) internal successors, (121), 103 states have internal predecessors, (121), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-12-02 15:53:22,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 226 transitions. [2024-12-02 15:53:22,217 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 226 transitions. Word has length 156 [2024-12-02 15:53:22,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:53:22,218 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 226 transitions. [2024-12-02 15:53:22,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-12-02 15:53:22,218 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 226 transitions. [2024-12-02 15:53:22,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-12-02 15:53:22,221 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:53:22,222 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 2, 2, 2, 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, 1, 1, 1, 1] [2024-12-02 15:53:22,241 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e91fc4-3d53-4d32-9092-34f9c6b50be4/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 15:53:22,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e91fc4-3d53-4d32-9092-34f9c6b50be4/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 15:53:22,422 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:53:22,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:53:22,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1409630713, now seen corresponding path program 1 times [2024-12-02 15:53:22,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:53:22,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983330684] [2024-12-02 15:53:22,423 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:53:22,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:54:44,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:54:46,391 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2024-12-02 15:54:46,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:54:46,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983330684] [2024-12-02 15:54:46,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983330684] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:54:46,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51902905] [2024-12-02 15:54:46,392 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:54:46,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:54:46,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e91fc4-3d53-4d32-9092-34f9c6b50be4/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:54:46,395 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e91fc4-3d53-4d32-9092-34f9c6b50be4/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:54:46,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e91fc4-3d53-4d32-9092-34f9c6b50be4/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 15:56:10,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:56:10,677 INFO L256 TraceCheckSpWp]: Trace formula consists of 8080 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 15:56:10,690 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:56:11,193 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2024-12-02 15:56:11,193 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 15:56:11,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51902905] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:56:11,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 15:56:11,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2024-12-02 15:56:11,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909968206] [2024-12-02 15:56:11,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:56:11,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 15:56:11,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:56:11,196 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 15:56:11,196 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-12-02 15:56:11,197 INFO L87 Difference]: Start difference. First operand 170 states and 226 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2024-12-02 15:56:12,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:56:12,386 INFO L93 Difference]: Finished difference Result 336 states and 452 transitions. [2024-12-02 15:56:12,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 15:56:12,387 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 156 [2024-12-02 15:56:12,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:56:12,390 INFO L225 Difference]: With dead ends: 336 [2024-12-02 15:56:12,391 INFO L226 Difference]: Without dead ends: 173 [2024-12-02 15:56:12,391 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-12-02 15:56:12,392 INFO L435 NwaCegarLoop]: 182 mSDtfsCounter, 223 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 15:56:12,392 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 515 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 15:56:12,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-12-02 15:56:12,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2024-12-02 15:56:12,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 103 states have (on average 1.1941747572815533) internal successors, (123), 106 states have internal predecessors, (123), 53 states have call successors, (53), 15 states have call predecessors, (53), 16 states have return successors, (59), 52 states have call predecessors, (59), 52 states have call successors, (59) [2024-12-02 15:56:12,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 235 transitions. [2024-12-02 15:56:12,416 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 235 transitions. Word has length 156 [2024-12-02 15:56:12,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:56:12,416 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 235 transitions. [2024-12-02 15:56:12,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2024-12-02 15:56:12,417 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 235 transitions. [2024-12-02 15:56:12,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-12-02 15:56:12,419 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:56:12,420 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 5, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:56:12,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e91fc4-3d53-4d32-9092-34f9c6b50be4/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-12-02 15:56:12,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e91fc4-3d53-4d32-9092-34f9c6b50be4/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-12-02 15:56:12,620 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:56:12,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:56:12,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1309673106, now seen corresponding path program 1 times [2024-12-02 15:56:12,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:56:12,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354184055] [2024-12-02 15:56:12,621 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:56:12,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:57:34,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:57:35,802 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2024-12-02 15:57:35,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:57:35,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354184055] [2024-12-02 15:57:35,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354184055] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:57:35,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973218385] [2024-12-02 15:57:35,803 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:57:35,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:57:35,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e91fc4-3d53-4d32-9092-34f9c6b50be4/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:57:35,805 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e91fc4-3d53-4d32-9092-34f9c6b50be4/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:57:35,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e91fc4-3d53-4d32-9092-34f9c6b50be4/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 15:58:59,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:58:59,102 INFO L256 TraceCheckSpWp]: Trace formula consists of 8097 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 15:58:59,109 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:58:59,669 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2024-12-02 15:58:59,669 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 15:58:59,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973218385] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:58:59,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 15:58:59,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2024-12-02 15:58:59,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598550242] [2024-12-02 15:58:59,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:58:59,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 15:58:59,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:58:59,671 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 15:58:59,671 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-12-02 15:58:59,672 INFO L87 Difference]: Start difference. First operand 173 states and 235 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2024-12-02 15:59:00,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:59:00,749 INFO L93 Difference]: Finished difference Result 308 states and 422 transitions. [2024-12-02 15:59:00,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 15:59:00,749 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 162 [2024-12-02 15:59:00,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:59:00,751 INFO L225 Difference]: With dead ends: 308 [2024-12-02 15:59:00,751 INFO L226 Difference]: Without dead ends: 173 [2024-12-02 15:59:00,752 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-12-02 15:59:00,753 INFO L435 NwaCegarLoop]: 184 mSDtfsCounter, 221 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 15:59:00,753 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 519 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 15:59:00,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-12-02 15:59:00,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2024-12-02 15:59:00,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 103 states have (on average 1.1941747572815533) internal successors, (123), 106 states have internal predecessors, (123), 53 states have call successors, (53), 15 states have call predecessors, (53), 16 states have return successors, (57), 52 states have call predecessors, (57), 52 states have call successors, (57) [2024-12-02 15:59:00,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 233 transitions. [2024-12-02 15:59:00,765 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 233 transitions. Word has length 162 [2024-12-02 15:59:00,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:59:00,766 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 233 transitions. [2024-12-02 15:59:00,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2024-12-02 15:59:00,766 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 233 transitions. [2024-12-02 15:59:00,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-12-02 15:59:00,768 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:59:00,768 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1] [2024-12-02 15:59:00,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e91fc4-3d53-4d32-9092-34f9c6b50be4/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-12-02 15:59:00,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e91fc4-3d53-4d32-9092-34f9c6b50be4/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:59:00,968 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:59:00,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:59:00,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1324282521, now seen corresponding path program 2 times [2024-12-02 15:59:00,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:59:00,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83732309] [2024-12-02 15:59:00,969 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:59:00,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 16:00:24,179 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 16:00:24,180 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 16:00:26,805 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-12-02 16:00:26,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 16:00:26,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83732309] [2024-12-02 16:00:26,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83732309] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 16:00:26,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 16:00:26,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 16:00:26,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114736305] [2024-12-02 16:00:26,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 16:00:26,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 16:00:26,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 16:00:26,806 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 16:00:26,806 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-12-02 16:00:26,807 INFO L87 Difference]: Start difference. First operand 173 states and 233 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 5 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) [2024-12-02 16:00:27,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 16:00:27,723 INFO L93 Difference]: Finished difference Result 294 states and 400 transitions. [2024-12-02 16:00:27,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 16:00:27,724 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 5 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) Word has length 168 [2024-12-02 16:00:27,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 16:00:27,727 INFO L225 Difference]: With dead ends: 294 [2024-12-02 16:00:27,727 INFO L226 Difference]: Without dead ends: 173 [2024-12-02 16:00:27,727 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-12-02 16:00:27,728 INFO L435 NwaCegarLoop]: 210 mSDtfsCounter, 40 mSDsluCounter, 1154 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 1364 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 16:00:27,729 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 1364 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 16:00:27,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-12-02 16:00:27,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2024-12-02 16:00:27,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 103 states have (on average 1.1941747572815533) internal successors, (123), 106 states have internal predecessors, (123), 53 states have call successors, (53), 15 states have call predecessors, (53), 16 states have return successors, (53), 52 states have call predecessors, (53), 52 states have call successors, (53) [2024-12-02 16:00:27,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 229 transitions. [2024-12-02 16:00:27,784 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 229 transitions. Word has length 168 [2024-12-02 16:00:27,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 16:00:27,786 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 229 transitions. [2024-12-02 16:00:27,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 5 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) [2024-12-02 16:00:27,786 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 229 transitions. [2024-12-02 16:00:27,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-12-02 16:00:27,788 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 16:00:27,789 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2024-12-02 16:00:27,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 16:00:27,789 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 16:00:27,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 16:00:27,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1111201830, now seen corresponding path program 3 times [2024-12-02 16:00:27,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 16:00:27,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114392906] [2024-12-02 16:00:27,790 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 16:00:27,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 16:01:50,113 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-12-02 16:01:50,113 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 16:01:54,433 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2024-12-02 16:01:54,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 16:01:54,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114392906] [2024-12-02 16:01:54,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114392906] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 16:01:54,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 16:01:54,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 16:01:54,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958628400] [2024-12-02 16:01:54,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 16:01:54,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 16:01:54,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 16:01:54,435 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 16:01:54,435 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 16:01:54,435 INFO L87 Difference]: Start difference. First operand 173 states and 229 transitions. Second operand has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2024-12-02 16:01:54,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 16:01:54,932 INFO L93 Difference]: Finished difference Result 185 states and 249 transitions. [2024-12-02 16:01:54,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 16:01:54,933 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) Word has length 186 [2024-12-02 16:01:54,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 16:01:54,936 INFO L225 Difference]: With dead ends: 185 [2024-12-02 16:01:54,936 INFO L226 Difference]: Without dead ends: 183 [2024-12-02 16:01:54,937 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-12-02 16:01:54,937 INFO L435 NwaCegarLoop]: 224 mSDtfsCounter, 3 mSDsluCounter, 1319 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1543 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 16:01:54,938 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1543 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 16:01:54,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-12-02 16:01:54,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 182. [2024-12-02 16:01:54,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 109 states have (on average 1.18348623853211) internal successors, (129), 113 states have internal predecessors, (129), 54 states have call successors, (54), 16 states have call predecessors, (54), 18 states have return successors, (63), 53 states have call predecessors, (63), 53 states have call successors, (63) [2024-12-02 16:01:54,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 246 transitions. [2024-12-02 16:01:54,958 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 246 transitions. Word has length 186 [2024-12-02 16:01:54,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 16:01:54,958 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 246 transitions. [2024-12-02 16:01:54,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2024-12-02 16:01:54,959 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 246 transitions. [2024-12-02 16:01:54,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-12-02 16:01:54,961 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 16:01:54,961 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 16:01:54,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 16:01:54,962 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 16:01:54,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 16:01:54,962 INFO L85 PathProgramCache]: Analyzing trace with hash 2110560610, now seen corresponding path program 1 times [2024-12-02 16:01:54,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 16:01:54,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448104457] [2024-12-02 16:01:54,962 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 16:01:54,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 16:03:16,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 16:03:18,634 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2024-12-02 16:03:18,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 16:03:18,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448104457] [2024-12-02 16:03:18,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448104457] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 16:03:18,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961055125] [2024-12-02 16:03:18,635 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 16:03:18,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 16:03:18,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e91fc4-3d53-4d32-9092-34f9c6b50be4/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 16:03:18,637 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e91fc4-3d53-4d32-9092-34f9c6b50be4/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 16:03:18,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e91fc4-3d53-4d32-9092-34f9c6b50be4/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 16:04:40,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 16:04:40,233 INFO L256 TraceCheckSpWp]: Trace formula consists of 8177 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 16:04:40,239 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 16:04:41,985 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 164 proven. 56 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2024-12-02 16:04:41,985 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 16:04:43,616 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2024-12-02 16:04:43,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961055125] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 16:04:43,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 16:04:43,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 11 [2024-12-02 16:04:43,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871327395] [2024-12-02 16:04:43,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 16:04:43,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 16:04:43,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 16:04:43,617 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 16:04:43,618 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-12-02 16:04:43,618 INFO L87 Difference]: Start difference. First operand 182 states and 246 transitions. Second operand has 11 states, 11 states have (on average 11.181818181818182) internal successors, (123), 11 states have internal predecessors, (123), 7 states have call successors, (63), 3 states have call predecessors, (63), 5 states have return successors, (61), 7 states have call predecessors, (61), 7 states have call successors, (61) [2024-12-02 16:04:44,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 16:04:44,834 INFO L93 Difference]: Finished difference Result 309 states and 416 transitions. [2024-12-02 16:04:44,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 16:04:44,835 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.181818181818182) internal successors, (123), 11 states have internal predecessors, (123), 7 states have call successors, (63), 3 states have call predecessors, (63), 5 states have return successors, (61), 7 states have call predecessors, (61), 7 states have call successors, (61) Word has length 190 [2024-12-02 16:04:44,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 16:04:44,838 INFO L225 Difference]: With dead ends: 309 [2024-12-02 16:04:44,838 INFO L226 Difference]: Without dead ends: 179 [2024-12-02 16:04:44,839 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 374 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-12-02 16:04:44,839 INFO L435 NwaCegarLoop]: 212 mSDtfsCounter, 244 mSDsluCounter, 1022 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 1234 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 16:04:44,839 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 1234 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 16:04:44,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-12-02 16:04:44,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2024-12-02 16:04:44,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 107 states have (on average 1.1775700934579438) internal successors, (126), 110 states have internal predecessors, (126), 54 states have call successors, (54), 16 states have call predecessors, (54), 17 states have return successors, (62), 53 states have call predecessors, (62), 53 states have call successors, (62) [2024-12-02 16:04:44,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 242 transitions. [2024-12-02 16:04:44,852 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 242 transitions. Word has length 190 [2024-12-02 16:04:44,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 16:04:44,853 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 242 transitions. [2024-12-02 16:04:44,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.181818181818182) internal successors, (123), 11 states have internal predecessors, (123), 7 states have call successors, (63), 3 states have call predecessors, (63), 5 states have return successors, (61), 7 states have call predecessors, (61), 7 states have call successors, (61) [2024-12-02 16:04:44,853 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 242 transitions. [2024-12-02 16:04:44,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-12-02 16:04:44,854 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 16:04:44,854 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 16:04:44,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e91fc4-3d53-4d32-9092-34f9c6b50be4/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-12-02 16:04:45,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e91fc4-3d53-4d32-9092-34f9c6b50be4/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-12-02 16:04:45,055 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 16:04:45,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 16:04:45,055 INFO L85 PathProgramCache]: Analyzing trace with hash -5512115, now seen corresponding path program 1 times [2024-12-02 16:04:45,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 16:04:45,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978631653] [2024-12-02 16:04:45,056 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 16:04:45,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms