./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_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_33d6d4e0-56a8-4145-bc11-8188f94e3c1d/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d6d4e0-56a8-4145-bc11-8188f94e3c1d/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_33d6d4e0-56a8-4145-bc11-8188f94e3c1d/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d6d4e0-56a8-4145-bc11-8188f94e3c1d/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d6d4e0-56a8-4145-bc11-8188f94e3c1d/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_33d6d4e0-56a8-4145-bc11-8188f94e3c1d/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 9a96b91703f0cc76adc9b0fdbd8386a96920c1be21a810b6415a59c2166f1461 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-01 23:06:11,167 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-01 23:06:11,217 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d6d4e0-56a8-4145-bc11-8188f94e3c1d/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-12-01 23:06:11,223 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-01 23:06:11,223 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-01 23:06:11,243 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-01 23:06:11,244 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-01 23:06:11,244 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-01 23:06:11,244 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-01 23:06:11,244 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-01 23:06:11,244 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-01 23:06:11,244 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-01 23:06:11,245 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-01 23:06:11,245 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-01 23:06:11,245 INFO L153 SettingsManager]: * Use SBE=true [2024-12-01 23:06:11,245 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-01 23:06:11,245 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-01 23:06:11,245 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-01 23:06:11,245 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-01 23:06:11,245 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-01 23:06:11,245 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-01 23:06:11,245 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-01 23:06:11,245 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-01 23:06:11,245 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-01 23:06:11,246 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-01 23:06:11,246 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-01 23:06:11,246 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-01 23:06:11,246 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-01 23:06:11,246 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-01 23:06:11,246 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 23:06:11,246 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-01 23:06:11,246 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-01 23:06:11,246 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-01 23:06:11,246 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-01 23:06:11,246 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 23:06:11,246 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-01 23:06:11,246 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-01 23:06:11,247 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-01 23:06:11,247 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-01 23:06:11,247 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-01 23:06:11,247 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-01 23:06:11,247 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-01 23:06:11,247 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-01 23:06:11,247 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-01 23:06:11,247 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-01 23:06:11,247 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_33d6d4e0-56a8-4145-bc11-8188f94e3c1d/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 -> 9a96b91703f0cc76adc9b0fdbd8386a96920c1be21a810b6415a59c2166f1461 [2024-12-01 23:06:11,475 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-01 23:06:11,483 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-01 23:06:11,485 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-01 23:06:11,486 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-01 23:06:11,487 INFO L274 PluginConnector]: CDTParser initialized [2024-12-01 23:06:11,488 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d6d4e0-56a8-4145-bc11-8188f94e3c1d/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i [2024-12-01 23:06:14,099 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d6d4e0-56a8-4145-bc11-8188f94e3c1d/bin/uautomizer-verify-84ZbGMXZE1/data/c584f12a7/4be600895df24a828feb7f609cb88109/FLAG50f50154f [2024-12-01 23:06:14,481 INFO L384 CDTParser]: Found 1 translation units. [2024-12-01 23:06:14,481 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d6d4e0-56a8-4145-bc11-8188f94e3c1d/sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i [2024-12-01 23:06:14,506 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d6d4e0-56a8-4145-bc11-8188f94e3c1d/bin/uautomizer-verify-84ZbGMXZE1/data/c584f12a7/4be600895df24a828feb7f609cb88109/FLAG50f50154f [2024-12-01 23:06:14,517 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d6d4e0-56a8-4145-bc11-8188f94e3c1d/bin/uautomizer-verify-84ZbGMXZE1/data/c584f12a7/4be600895df24a828feb7f609cb88109 [2024-12-01 23:06:14,519 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-01 23:06:14,520 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-01 23:06:14,521 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-01 23:06:14,521 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-01 23:06:14,524 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-01 23:06:14,525 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:06:14" (1/1) ... [2024-12-01 23:06:14,525 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@816b527 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:06:14, skipping insertion in model container [2024-12-01 23:06:14,526 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:06:14" (1/1) ... [2024-12-01 23:06:14,577 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-01 23:06:14,764 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_33d6d4e0-56a8-4145-bc11-8188f94e3c1d/sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i[4494,4507] [2024-12-01 23:06:14,769 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_33d6d4e0-56a8-4145-bc11-8188f94e3c1d/sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i[4554,4567] [2024-12-01 23:06:15,469 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-01 23:06:15,470 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-01 23:06:15,470 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-01 23:06:15,471 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-01 23:06:15,472 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-01 23:06:15,487 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-01 23:06:15,487 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-01 23:06:15,489 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-01 23:06:15,490 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-01 23:06:16,122 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-01 23:06:16,123 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-01 23:06:16,188 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-01 23:06:16,235 INFO L200 MainTranslator]: Completed pre-run [2024-12-01 23:06:16,248 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_33d6d4e0-56a8-4145-bc11-8188f94e3c1d/sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i[4494,4507] [2024-12-01 23:06:16,248 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_33d6d4e0-56a8-4145-bc11-8188f94e3c1d/sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i[4554,4567] [2024-12-01 23:06:16,284 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-01 23:06:16,285 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-01 23:06:16,285 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-01 23:06:16,285 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-01 23:06:16,286 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-01 23:06:16,292 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-01 23:06:16,292 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-01 23:06:16,293 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-01 23:06:16,293 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-01 23:06:16,402 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8291] [2024-12-01 23:06:16,404 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-01 23:06:16,404 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-01 23:06:16,444 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8777-8788] [2024-12-01 23:06:16,458 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-01 23:06:16,624 INFO L204 MainTranslator]: Completed translation [2024-12-01 23:06:16,625 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:06:16 WrapperNode [2024-12-01 23:06:16,625 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-01 23:06:16,626 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-01 23:06:16,626 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-01 23:06:16,626 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-01 23:06:16,630 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:06:16" (1/1) ... [2024-12-01 23:06:16,685 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:06:16" (1/1) ... [2024-12-01 23:06:16,752 INFO L138 Inliner]: procedures = 680, calls = 2671, calls flagged for inlining = 60, calls inlined = 8, statements flattened = 974 [2024-12-01 23:06:16,753 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-01 23:06:16,753 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-01 23:06:16,753 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-01 23:06:16,753 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-01 23:06:16,763 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:06:16" (1/1) ... [2024-12-01 23:06:16,763 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:06:16" (1/1) ... [2024-12-01 23:06:16,769 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:06:16" (1/1) ... [2024-12-01 23:06:16,832 INFO L175 MemorySlicer]: Split 591 memory accesses to 5 slices as follows [245, 2, 257, 6, 81]. 43 percent of accesses are in the largest equivalence class. The 25 initializations are split as follows [11, 2, 0, 0, 12]. The 508 writes are split as follows [232, 0, 257, 2, 17]. [2024-12-01 23:06:16,832 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:06:16" (1/1) ... [2024-12-01 23:06:16,833 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:06:16" (1/1) ... [2024-12-01 23:06:16,862 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:06:16" (1/1) ... [2024-12-01 23:06:16,864 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:06:16" (1/1) ... [2024-12-01 23:06:16,868 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:06:16" (1/1) ... [2024-12-01 23:06:16,875 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:06:16" (1/1) ... [2024-12-01 23:06:16,879 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:06:16" (1/1) ... [2024-12-01 23:06:16,888 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-01 23:06:16,889 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-01 23:06:16,889 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-01 23:06:16,889 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-01 23:06:16,890 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:06:16" (1/1) ... [2024-12-01 23:06:16,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 23:06:16,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d6d4e0-56a8-4145-bc11-8188f94e3c1d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:06:16,919 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d6d4e0-56a8-4145-bc11-8188f94e3c1d/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-01 23:06:16,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d6d4e0-56a8-4145-bc11-8188f94e3c1d/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-01 23:06:16,945 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2024-12-01 23:06:16,945 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2024-12-01 23:06:16,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-01 23:06:16,945 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-12-01 23:06:16,945 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-12-01 23:06:16,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-12-01 23:06:16,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-12-01 23:06:16,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-12-01 23:06:16,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-12-01 23:06:16,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-12-01 23:06:16,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-01 23:06:16,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-01 23:06:16,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-12-01 23:06:16,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-12-01 23:06:16,946 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-12-01 23:06:16,946 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-12-01 23:06:16,946 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-12-01 23:06:16,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-01 23:06:16,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-01 23:06:16,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-12-01 23:06:16,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-12-01 23:06:16,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-12-01 23:06:16,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-12-01 23:06:16,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-12-01 23:06:16,946 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_buf_has_allocated_buffer_member [2024-12-01 23:06:16,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_buf_has_allocated_buffer_member [2024-12-01 23:06:16,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-01 23:06:16,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-01 23:06:16,946 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-12-01 23:06:16,946 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-12-01 23:06:16,946 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2024-12-01 23:06:16,946 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2024-12-01 23:06:16,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-12-01 23:06:16,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-12-01 23:06:16,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-12-01 23:06:16,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-12-01 23:06:16,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-12-01 23:06:16,947 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-01 23:06:16,947 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-01 23:06:16,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-01 23:06:16,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-12-01 23:06:16,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-12-01 23:06:16,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-12-01 23:06:16,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-12-01 23:06:16,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-12-01 23:06:16,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-12-01 23:06:16,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-12-01 23:06:16,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-12-01 23:06:16,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-12-01 23:06:16,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-12-01 23:06:16,947 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-12-01 23:06:16,947 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-12-01 23:06:16,947 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_bounded [2024-12-01 23:06:16,948 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_bounded [2024-12-01 23:06:16,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-01 23:06:16,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-01 23:06:16,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-12-01 23:06:16,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-12-01 23:06:16,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-12-01 23:06:16,948 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2024-12-01 23:06:16,948 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2024-12-01 23:06:16,948 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2024-12-01 23:06:16,948 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2024-12-01 23:06:16,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-01 23:06:16,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-01 23:06:16,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-01 23:06:16,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-01 23:06:16,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-01 23:06:17,203 INFO L234 CfgBuilder]: Building ICFG [2024-12-01 23:06:17,204 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-01 23:06:25,386 INFO L? ?]: Removed 110 outVars from TransFormulas that were not future-live. [2024-12-01 23:06:25,386 INFO L283 CfgBuilder]: Performing block encoding [2024-12-01 23:06:25,397 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-01 23:06:25,398 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-01 23:06:25,398 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:06:25 BoogieIcfgContainer [2024-12-01 23:06:25,398 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-01 23:06:25,400 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-01 23:06:25,401 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-01 23:06:25,404 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-01 23:06:25,404 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 11:06:14" (1/3) ... [2024-12-01 23:06:25,405 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73d7e9e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:06:25, skipping insertion in model container [2024-12-01 23:06:25,405 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:06:16" (2/3) ... [2024-12-01 23:06:25,405 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73d7e9e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:06:25, skipping insertion in model container [2024-12-01 23:06:25,405 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:06:25" (3/3) ... [2024-12-01 23:06:25,406 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_advance_harness.i [2024-12-01 23:06:25,417 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-01 23:06:25,418 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_byte_buf_advance_harness.i that has 12 procedures, 172 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-12-01 23:06:25,461 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-01 23:06:25,470 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;@30c343d0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-01 23:06:25,471 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-01 23:06:25,474 INFO L276 IsEmpty]: Start isEmpty. Operand has 172 states, 105 states have (on average 1.2190476190476192) internal successors, (128), 105 states have internal predecessors, (128), 55 states have call successors, (55), 11 states have call predecessors, (55), 11 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2024-12-01 23:06:25,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-12-01 23:06:25,482 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:06:25,483 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 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] [2024-12-01 23:06:25,483 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:06:25,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:06:25,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1475621305, now seen corresponding path program 1 times [2024-12-01 23:06:25,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:06:25,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007388011] [2024-12-01 23:06:25,493 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:06:25,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:07:45,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:07:45,970 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-12-01 23:07:45,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:07:45,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007388011] [2024-12-01 23:07:45,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007388011] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:07:45,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867863064] [2024-12-01 23:07:45,971 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:07:45,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:07:45,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d6d4e0-56a8-4145-bc11-8188f94e3c1d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:07:45,974 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d6d4e0-56a8-4145-bc11-8188f94e3c1d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:07:45,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d6d4e0-56a8-4145-bc11-8188f94e3c1d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-01 23:09:08,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:09:08,378 INFO L256 TraceCheckSpWp]: Trace formula consists of 7741 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-01 23:09:08,389 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:09:08,403 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-12-01 23:09:08,403 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:09:08,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867863064] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:09:08,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:09:08,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-01 23:09:08,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158124982] [2024-12-01 23:09:08,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:09:08,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-01 23:09:08,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:09:08,422 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-01 23:09:08,423 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-01 23:09:08,425 INFO L87 Difference]: Start difference. First operand has 172 states, 105 states have (on average 1.2190476190476192) internal successors, (128), 105 states have internal predecessors, (128), 55 states have call successors, (55), 11 states have call predecessors, (55), 11 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) Second operand has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-01 23:09:08,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:09:08,460 INFO L93 Difference]: Finished difference Result 340 states and 509 transitions. [2024-12-01 23:09:08,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-01 23:09:08,462 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 89 [2024-12-01 23:09:08,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:09:08,470 INFO L225 Difference]: With dead ends: 340 [2024-12-01 23:09:08,470 INFO L226 Difference]: Without dead ends: 167 [2024-12-01 23:09:08,474 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-01 23:09:08,477 INFO L435 NwaCegarLoop]: 233 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, 233 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 [2024-12-01 23:09:08,477 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:09:08,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-12-01 23:09:08,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2024-12-01 23:09:08,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 100 states have (on average 1.19) internal successors, (119), 101 states have internal predecessors, (119), 55 states have call successors, (55), 11 states have call predecessors, (55), 11 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-12-01 23:09:08,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 228 transitions. [2024-12-01 23:09:08,515 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 228 transitions. Word has length 89 [2024-12-01 23:09:08,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:09:08,516 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 228 transitions. [2024-12-01 23:09:08,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-12-01 23:09:08,516 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 228 transitions. [2024-12-01 23:09:08,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-12-01 23:09:08,520 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:09:08,520 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 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] [2024-12-01 23:09:08,539 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d6d4e0-56a8-4145-bc11-8188f94e3c1d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-01 23:09:08,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d6d4e0-56a8-4145-bc11-8188f94e3c1d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-01 23:09:08,724 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:09:08,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:09:08,725 INFO L85 PathProgramCache]: Analyzing trace with hash 2098865434, now seen corresponding path program 1 times [2024-12-01 23:09:08,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:09:08,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320331936] [2024-12-01 23:09:08,725 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:09:08,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:10:27,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:10:29,982 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-12-01 23:10:29,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:10:29,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320331936] [2024-12-01 23:10:29,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320331936] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:10:29,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119636897] [2024-12-01 23:10:29,983 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:10:29,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:10:29,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d6d4e0-56a8-4145-bc11-8188f94e3c1d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:10:29,986 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d6d4e0-56a8-4145-bc11-8188f94e3c1d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:10:29,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d6d4e0-56a8-4145-bc11-8188f94e3c1d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-01 23:11:52,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:11:52,233 INFO L256 TraceCheckSpWp]: Trace formula consists of 7835 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-01 23:11:52,240 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:11:52,858 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-12-01 23:11:52,858 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:11:52,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119636897] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:11:52,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:11:52,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2024-12-01 23:11:52,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359058237] [2024-12-01 23:11:52,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:11:52,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-01 23:11:52,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:11:52,860 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-01 23:11:52,860 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-12-01 23:11:52,861 INFO L87 Difference]: Start difference. First operand 167 states and 228 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-12-01 23:11:54,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:11:54,443 INFO L93 Difference]: Finished difference Result 330 states and 458 transitions. [2024-12-01 23:11:54,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-01 23:11:54,444 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 94 [2024-12-01 23:11:54,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:11:54,448 INFO L225 Difference]: With dead ends: 330 [2024-12-01 23:11:54,448 INFO L226 Difference]: Without dead ends: 170 [2024-12-01 23:11:54,449 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-12-01 23:11:54,449 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 233 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-12-01 23:11:54,450 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 446 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-12-01 23:11:54,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-12-01 23:11:54,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2024-12-01 23:11:54,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 102 states have (on average 1.1862745098039216) internal successors, (121), 104 states have internal predecessors, (121), 55 states have call successors, (55), 11 states have call predecessors, (55), 12 states have return successors, (63), 54 states have call predecessors, (63), 54 states have call successors, (63) [2024-12-01 23:11:54,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 239 transitions. [2024-12-01 23:11:54,475 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 239 transitions. Word has length 94 [2024-12-01 23:11:54,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:11:54,476 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 239 transitions. [2024-12-01 23:11:54,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-12-01 23:11:54,476 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 239 transitions. [2024-12-01 23:11:54,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-12-01 23:11:54,479 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:11:54,479 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 3, 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] [2024-12-01 23:11:54,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d6d4e0-56a8-4145-bc11-8188f94e3c1d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-12-01 23:11:54,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d6d4e0-56a8-4145-bc11-8188f94e3c1d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:11:54,680 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:11:54,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:11:54,680 INFO L85 PathProgramCache]: Analyzing trace with hash -2038488081, now seen corresponding path program 1 times [2024-12-01 23:11:54,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:11:54,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635863582] [2024-12-01 23:11:54,681 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:11:54,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:13:13,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:13:15,862 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-12-01 23:13:15,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:13:15,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635863582] [2024-12-01 23:13:15,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635863582] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:13:15,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274784969] [2024-12-01 23:13:15,863 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:13:15,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:13:15,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d6d4e0-56a8-4145-bc11-8188f94e3c1d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:13:15,865 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d6d4e0-56a8-4145-bc11-8188f94e3c1d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:13:15,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d6d4e0-56a8-4145-bc11-8188f94e3c1d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-01 23:14:37,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:14:37,645 INFO L256 TraceCheckSpWp]: Trace formula consists of 7852 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-01 23:14:37,651 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:14:38,432 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-12-01 23:14:38,432 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:14:38,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274784969] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:14:38,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:14:38,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2024-12-01 23:14:38,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448055454] [2024-12-01 23:14:38,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:14:38,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-01 23:14:38,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:14:38,433 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-01 23:14:38,433 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-12-01 23:14:38,434 INFO L87 Difference]: Start difference. First operand 170 states and 239 transitions. Second operand has 7 states, 6 states have (on average 8.5) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2024-12-01 23:14:40,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:14:40,997 INFO L93 Difference]: Finished difference Result 291 states and 412 transitions. [2024-12-01 23:14:40,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-01 23:14:40,998 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.5) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 100 [2024-12-01 23:14:40,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:14:41,000 INFO L225 Difference]: With dead ends: 291 [2024-12-01 23:14:41,000 INFO L226 Difference]: Without dead ends: 170 [2024-12-01 23:14:41,001 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-12-01 23:14:41,002 INFO L435 NwaCegarLoop]: 165 mSDtfsCounter, 242 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-12-01 23:14:41,002 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 748 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-12-01 23:14:41,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-12-01 23:14:41,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2024-12-01 23:14:41,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 102 states have (on average 1.1862745098039216) internal successors, (121), 104 states have internal predecessors, (121), 55 states have call successors, (55), 11 states have call predecessors, (55), 12 states have return successors, (60), 54 states have call predecessors, (60), 54 states have call successors, (60) [2024-12-01 23:14:41,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 236 transitions. [2024-12-01 23:14:41,024 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 236 transitions. Word has length 100 [2024-12-01 23:14:41,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:14:41,024 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 236 transitions. [2024-12-01 23:14:41,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.5) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2024-12-01 23:14:41,025 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 236 transitions. [2024-12-01 23:14:41,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-12-01 23:14:41,027 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:14:41,027 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 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] [2024-12-01 23:14:41,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d6d4e0-56a8-4145-bc11-8188f94e3c1d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-12-01 23:14:41,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d6d4e0-56a8-4145-bc11-8188f94e3c1d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:14:41,228 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:14:41,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:14:41,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1077153148, now seen corresponding path program 2 times [2024-12-01 23:14:41,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:14:41,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398889472] [2024-12-01 23:14:41,228 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-01 23:14:41,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:16:02,043 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-01 23:16:02,043 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-01 23:16:03,610 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-12-01 23:16:03,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:16:03,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398889472] [2024-12-01 23:16:03,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398889472] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:16:03,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:16:03,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-01 23:16:03,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173597506] [2024-12-01 23:16:03,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:16:03,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-01 23:16:03,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:16:03,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-01 23:16:03,612 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-01 23:16:03,612 INFO L87 Difference]: Start difference. First operand 170 states and 236 transitions. Second operand has 5 states, 4 states have (on average 11.25) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-01 23:16:03,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:16:03,921 INFO L93 Difference]: Finished difference Result 255 states and 356 transitions. [2024-12-01 23:16:03,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 23:16:03,921 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.25) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 106 [2024-12-01 23:16:03,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:16:03,924 INFO L225 Difference]: With dead ends: 255 [2024-12-01 23:16:03,924 INFO L226 Difference]: Without dead ends: 170 [2024-12-01 23:16:03,924 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-01 23:16:03,925 INFO L435 NwaCegarLoop]: 220 mSDtfsCounter, 0 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-01 23:16:03,925 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 641 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-01 23:16:03,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-12-01 23:16:03,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2024-12-01 23:16:03,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 102 states have (on average 1.1862745098039216) internal successors, (121), 104 states have internal predecessors, (121), 55 states have call successors, (55), 11 states have call predecessors, (55), 12 states have return successors, (59), 54 states have call predecessors, (59), 54 states have call successors, (59) [2024-12-01 23:16:03,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 235 transitions. [2024-12-01 23:16:03,940 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 235 transitions. Word has length 106 [2024-12-01 23:16:03,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:16:03,941 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 235 transitions. [2024-12-01 23:16:03,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.25) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-12-01 23:16:03,941 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 235 transitions. [2024-12-01 23:16:03,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-12-01 23:16:03,943 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:16:03,943 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2024-12-01 23:16:03,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-01 23:16:03,943 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:16:03,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:16:03,944 INFO L85 PathProgramCache]: Analyzing trace with hash 989252751, now seen corresponding path program 3 times [2024-12-01 23:16:03,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:16:03,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70511224] [2024-12-01 23:16:03,944 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-01 23:16:03,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:17:25,140 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-12-01 23:17:25,141 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-01 23:17:30,000 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-12-01 23:17:30,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:17:30,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70511224] [2024-12-01 23:17:30,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70511224] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:17:30,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:17:30,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-01 23:17:30,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49248695] [2024-12-01 23:17:30,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:17:30,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-01 23:17:30,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:17:30,001 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-01 23:17:30,002 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-01 23:17:30,002 INFO L87 Difference]: Start difference. First operand 170 states and 235 transitions. Second operand has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2024-12-01 23:17:30,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:17:30,643 INFO L93 Difference]: Finished difference Result 182 states and 257 transitions. [2024-12-01 23:17:30,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-01 23:17:30,644 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 112 [2024-12-01 23:17:30,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:17:30,646 INFO L225 Difference]: With dead ends: 182 [2024-12-01 23:17:30,646 INFO L226 Difference]: Without dead ends: 180 [2024-12-01 23:17:30,646 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-12-01 23:17:30,647 INFO L435 NwaCegarLoop]: 233 mSDtfsCounter, 3 mSDsluCounter, 1358 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1591 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-01 23:17:30,647 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1591 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-01 23:17:30,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-12-01 23:17:30,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 179. [2024-12-01 23:17:30,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 108 states have (on average 1.1759259259259258) internal successors, (127), 111 states have internal predecessors, (127), 56 states have call successors, (56), 12 states have call predecessors, (56), 14 states have return successors, (71), 55 states have call predecessors, (71), 55 states have call successors, (71) [2024-12-01 23:17:30,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 254 transitions. [2024-12-01 23:17:30,665 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 254 transitions. Word has length 112 [2024-12-01 23:17:30,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:17:30,665 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 254 transitions. [2024-12-01 23:17:30,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2024-12-01 23:17:30,666 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 254 transitions. [2024-12-01 23:17:30,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-12-01 23:17:30,667 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:17:30,668 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2024-12-01 23:17:30,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-01 23:17:30,668 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:17:30,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:17:30,668 INFO L85 PathProgramCache]: Analyzing trace with hash -117099049, now seen corresponding path program 1 times [2024-12-01 23:17:30,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:17:30,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543578016] [2024-12-01 23:17:30,669 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:17:30,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:18:52,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:18:55,253 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2024-12-01 23:18:55,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:18:55,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543578016] [2024-12-01 23:18:55,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543578016] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:18:55,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461776156] [2024-12-01 23:18:55,253 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:18:55,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:18:55,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d6d4e0-56a8-4145-bc11-8188f94e3c1d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:18:55,255 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d6d4e0-56a8-4145-bc11-8188f94e3c1d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:18:55,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d6d4e0-56a8-4145-bc11-8188f94e3c1d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-01 23:20:17,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:20:17,913 INFO L256 TraceCheckSpWp]: Trace formula consists of 7898 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-01 23:20:17,919 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:20:18,698 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-12-01 23:20:18,698 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:20:18,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461776156] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:20:18,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:20:18,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2024-12-01 23:20:18,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142576485] [2024-12-01 23:20:18,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:20:18,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-01 23:20:18,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:20:18,700 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-01 23:20:18,700 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-12-01 23:20:18,701 INFO L87 Difference]: Start difference. First operand 179 states and 254 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2024-12-01 23:20:21,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:20:21,259 INFO L93 Difference]: Finished difference Result 318 states and 454 transitions. [2024-12-01 23:20:21,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-01 23:20:21,260 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 116 [2024-12-01 23:20:21,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:20:21,262 INFO L225 Difference]: With dead ends: 318 [2024-12-01 23:20:21,262 INFO L226 Difference]: Without dead ends: 176 [2024-12-01 23:20:21,263 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-12-01 23:20:21,264 INFO L435 NwaCegarLoop]: 165 mSDtfsCounter, 241 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-12-01 23:20:21,264 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 746 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-12-01 23:20:21,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-12-01 23:20:21,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2024-12-01 23:20:21,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 106 states have (on average 1.169811320754717) internal successors, (124), 108 states have internal predecessors, (124), 56 states have call successors, (56), 12 states have call predecessors, (56), 13 states have return successors, (66), 55 states have call predecessors, (66), 55 states have call successors, (66) [2024-12-01 23:20:21,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 246 transitions. [2024-12-01 23:20:21,279 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 246 transitions. Word has length 116 [2024-12-01 23:20:21,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:20:21,280 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 246 transitions. [2024-12-01 23:20:21,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2024-12-01 23:20:21,280 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 246 transitions. [2024-12-01 23:20:21,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-12-01 23:20:21,282 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:20:21,282 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2024-12-01 23:20:21,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d6d4e0-56a8-4145-bc11-8188f94e3c1d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-12-01 23:20:21,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d6d4e0-56a8-4145-bc11-8188f94e3c1d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-12-01 23:20:21,482 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 23:20:21,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:20:21,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1552135276, now seen corresponding path program 1 times [2024-12-01 23:20:21,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:20:21,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933183550] [2024-12-01 23:20:21,483 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:20:21,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms