./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b0342f-1824-4174-85c3-d65477e54e1c/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b0342f-1824-4174-85c3-d65477e54e1c/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b0342f-1824-4174-85c3-d65477e54e1c/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b0342f-1824-4174-85c3-d65477e54e1c/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b0342f-1824-4174-85c3-d65477e54e1c/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b0342f-1824-4174-85c3-d65477e54e1c/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash bb0c309b27b585749f4baad3e5a2aa617acc042d97a0a5f067f810d997d3b9d7 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 23:26:09,915 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 23:26:10,018 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b0342f-1824-4174-85c3-d65477e54e1c/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-23 23:26:10,025 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 23:26:10,026 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 23:26:10,056 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 23:26:10,057 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 23:26:10,057 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 23:26:10,058 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 23:26:10,058 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 23:26:10,058 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 23:26:10,058 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 23:26:10,059 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 23:26:10,059 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 23:26:10,059 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 23:26:10,059 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 23:26:10,060 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 23:26:10,060 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 23:26:10,060 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 23:26:10,060 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 23:26:10,060 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 23:26:10,061 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 23:26:10,061 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 23:26:10,061 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 23:26:10,061 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 23:26:10,061 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 23:26:10,061 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:26:10,062 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:26:10,062 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:26:10,062 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:26:10,062 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 23:26:10,062 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:26:10,062 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:26:10,062 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:26:10,062 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:26:10,063 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 23:26:10,063 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 23:26:10,063 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 23:26:10,063 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 23:26:10,063 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 23:26:10,063 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 23:26:10,063 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 23:26:10,063 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 23:26:10,064 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 23:26:10,064 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 23:26:10,064 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_53b0342f-1824-4174-85c3-d65477e54e1c/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb0c309b27b585749f4baad3e5a2aa617acc042d97a0a5f067f810d997d3b9d7 [2024-11-23 23:26:10,419 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 23:26:10,439 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 23:26:10,443 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 23:26:10,445 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 23:26:10,445 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 23:26:10,448 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b0342f-1824-4174-85c3-d65477e54e1c/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness_negated.i [2024-11-23 23:26:13,987 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b0342f-1824-4174-85c3-d65477e54e1c/bin/uautomizer-verify-LYvppIcaGC/data/a2464c87a/1e152fc9f3284d0f9135cf1a0144dd26/FLAGed6ddf8f9 [2024-11-23 23:26:14,759 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 23:26:14,760 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b0342f-1824-4174-85c3-d65477e54e1c/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness_negated.i [2024-11-23 23:26:14,805 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b0342f-1824-4174-85c3-d65477e54e1c/bin/uautomizer-verify-LYvppIcaGC/data/a2464c87a/1e152fc9f3284d0f9135cf1a0144dd26/FLAGed6ddf8f9 [2024-11-23 23:26:14,825 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b0342f-1824-4174-85c3-d65477e54e1c/bin/uautomizer-verify-LYvppIcaGC/data/a2464c87a/1e152fc9f3284d0f9135cf1a0144dd26 [2024-11-23 23:26:14,828 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 23:26:14,830 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 23:26:14,832 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 23:26:14,832 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 23:26:14,838 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 23:26:14,839 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:26:14" (1/1) ... [2024-11-23 23:26:14,840 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a2cd81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:26:14, skipping insertion in model container [2024-11-23 23:26:14,840 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:26:14" (1/1) ... [2024-11-23 23:26:14,979 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:26:15,299 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_53b0342f-1824-4174-85c3-d65477e54e1c/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness_negated.i[4502,4515] [2024-11-23 23:26:15,306 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_53b0342f-1824-4174-85c3-d65477e54e1c/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness_negated.i[4562,4575] [2024-11-23 23:26:16,523 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:26:16,524 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:26:16,525 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:26:16,526 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:26:16,528 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:26:16,549 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:26:16,550 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:26:16,553 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:26:16,554 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:26:17,747 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:26:17,751 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:26:17,838 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:26:17,934 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 23:26:17,954 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_53b0342f-1824-4174-85c3-d65477e54e1c/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness_negated.i[4502,4515] [2024-11-23 23:26:17,959 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_53b0342f-1824-4174-85c3-d65477e54e1c/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness_negated.i[4562,4575] [2024-11-23 23:26:18,046 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:26:18,047 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:26:18,047 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:26:18,048 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:26:18,052 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:26:18,060 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:26:18,061 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:26:18,062 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:26:18,064 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:26:18,317 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8061] [2024-11-23 23:26:18,319 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:26:18,320 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:26:18,338 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8547-8558] [2024-11-23 23:26:18,365 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:26:18,706 INFO L204 MainTranslator]: Completed translation [2024-11-23 23:26:18,707 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:26:18 WrapperNode [2024-11-23 23:26:18,707 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 23:26:18,708 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 23:26:18,709 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 23:26:18,710 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 23:26:18,726 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:26:18" (1/1) ... [2024-11-23 23:26:18,852 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:26:18" (1/1) ... [2024-11-23 23:26:18,969 INFO L138 Inliner]: procedures = 680, calls = 2502, calls flagged for inlining = 56, calls inlined = 8, statements flattened = 823 [2024-11-23 23:26:18,970 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 23:26:18,971 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 23:26:18,971 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 23:26:18,971 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 23:26:18,990 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:26:18" (1/1) ... [2024-11-23 23:26:18,991 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:26:18" (1/1) ... [2024-11-23 23:26:19,005 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:26:18" (1/1) ... [2024-11-23 23:26:19,122 INFO L175 MemorySlicer]: Split 536 memory accesses to 5 slices as follows [2, 257, 32, 238, 7]. 48 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 0, 4, 6, 5]. The 497 writes are split as follows [0, 257, 7, 232, 1]. [2024-11-23 23:26:19,126 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:26:18" (1/1) ... [2024-11-23 23:26:19,130 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:26:18" (1/1) ... [2024-11-23 23:26:19,177 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:26:18" (1/1) ... [2024-11-23 23:26:19,184 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:26:18" (1/1) ... [2024-11-23 23:26:19,195 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:26:18" (1/1) ... [2024-11-23 23:26:19,216 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:26:18" (1/1) ... [2024-11-23 23:26:19,224 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:26:18" (1/1) ... [2024-11-23 23:26:19,246 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 23:26:19,252 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 23:26:19,253 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 23:26:19,253 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 23:26:19,255 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:26:18" (1/1) ... [2024-11-23 23:26:19,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:26:19,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b0342f-1824-4174-85c3-d65477e54e1c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:26:19,301 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b0342f-1824-4174-85c3-d65477e54e1c/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 23:26:19,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b0342f-1824-4174-85c3-d65477e54e1c/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 23:26:19,341 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2024-11-23 23:26:19,342 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2024-11-23 23:26:19,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-23 23:26:19,343 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-23 23:26:19,343 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-23 23:26:19,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-23 23:26:19,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-23 23:26:19,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-23 23:26:19,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-23 23:26:19,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-23 23:26:19,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-23 23:26:19,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-23 23:26:19,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-23 23:26:19,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-23 23:26:19,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-23 23:26:19,346 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-23 23:26:19,346 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-23 23:26:19,346 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_secure_zero [2024-11-23 23:26:19,346 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_secure_zero [2024-11-23 23:26:19,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-23 23:26:19,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 23:26:19,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-23 23:26:19,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-23 23:26:19,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-23 23:26:19,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-23 23:26:19,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-23 23:26:19,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 23:26:19,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 23:26:19,347 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-23 23:26:19,347 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-23 23:26:19,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-23 23:26:19,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-23 23:26:19,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-23 23:26:19,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-23 23:26:19,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-23 23:26:19,348 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2024-11-23 23:26:19,348 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2024-11-23 23:26:19,348 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-23 23:26:19,348 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-23 23:26:19,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-23 23:26:19,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-23 23:26:19,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-23 23:26:19,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-23 23:26:19,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-23 23:26:19,349 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-23 23:26:19,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-23 23:26:19,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-23 23:26:19,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-23 23:26:19,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-23 23:26:19,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-23 23:26:19,349 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-11-23 23:26:19,349 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-11-23 23:26:19,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-23 23:26:19,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-23 23:26:19,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-23 23:26:19,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-23 23:26:19,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-23 23:26:19,350 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2024-11-23 23:26:19,350 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2024-11-23 23:26:19,350 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2024-11-23 23:26:19,350 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2024-11-23 23:26:19,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 23:26:19,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 23:26:19,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-23 23:26:19,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-23 23:26:19,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-23 23:26:19,741 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 23:26:19,745 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 23:26:29,405 INFO L? ?]: Removed 72 outVars from TransFormulas that were not future-live. [2024-11-23 23:26:29,405 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 23:26:29,416 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 23:26:29,417 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-23 23:26:29,417 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:26:29 BoogieIcfgContainer [2024-11-23 23:26:29,417 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 23:26:29,419 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 23:26:29,419 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 23:26:29,424 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 23:26:29,425 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:26:14" (1/3) ... [2024-11-23 23:26:29,425 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ee8e49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:26:29, skipping insertion in model container [2024-11-23 23:26:29,426 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:26:18" (2/3) ... [2024-11-23 23:26:29,426 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ee8e49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:26:29, skipping insertion in model container [2024-11-23 23:26:29,426 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:26:29" (3/3) ... [2024-11-23 23:26:29,427 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_clean_up_secure_harness_negated.i [2024-11-23 23:26:29,444 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 23:26:29,446 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_byte_buf_clean_up_secure_harness_negated.i that has 11 procedures, 120 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-23 23:26:29,508 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 23:26:29,521 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;@5eeca092, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 23:26:29,521 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 23:26:29,526 INFO L276 IsEmpty]: Start isEmpty. Operand has 120 states, 80 states have (on average 1.225) internal successors, (98), 81 states have internal predecessors, (98), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-23 23:26:29,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-23 23:26:29,536 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:26:29,537 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:26:29,538 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:26:29,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:26:29,543 INFO L85 PathProgramCache]: Analyzing trace with hash -2095082959, now seen corresponding path program 1 times [2024-11-23 23:26:29,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:26:29,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787429774] [2024-11-23 23:26:29,553 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:26:29,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:28:25,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:28:30,177 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-23 23:28:30,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:28:30,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787429774] [2024-11-23 23:28:30,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787429774] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:28:30,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407817396] [2024-11-23 23:28:30,179 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:28:30,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:28:30,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b0342f-1824-4174-85c3-d65477e54e1c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:28:30,184 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b0342f-1824-4174-85c3-d65477e54e1c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:28:30,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b0342f-1824-4174-85c3-d65477e54e1c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 23:30:19,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:30:19,477 INFO L256 TraceCheckSpWp]: Trace formula consists of 7600 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 23:30:19,491 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:30:20,193 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-23 23:30:20,193 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:30:20,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407817396] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:30:20,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:30:20,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2024-11-23 23:30:20,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423185432] [2024-11-23 23:30:20,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:30:20,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:30:20,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:30:20,229 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:30:20,230 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:30:20,233 INFO L87 Difference]: Start difference. First operand has 120 states, 80 states have (on average 1.225) internal successors, (98), 81 states have internal predecessors, (98), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-23 23:30:21,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:30:21,310 INFO L93 Difference]: Finished difference Result 239 states and 331 transitions. [2024-11-23 23:30:21,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:30:21,313 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 77 [2024-11-23 23:30:21,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:30:21,321 INFO L225 Difference]: With dead ends: 239 [2024-11-23 23:30:21,322 INFO L226 Difference]: Without dead ends: 118 [2024-11-23 23:30:21,326 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:30:21,329 INFO L435 NwaCegarLoop]: 120 mSDtfsCounter, 152 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-23 23:30:21,330 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 332 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-23 23:30:21,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-23 23:30:21,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2024-11-23 23:30:21,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 78 states have (on average 1.1923076923076923) internal successors, (93), 80 states have internal predecessors, (93), 28 states have call successors, (28), 10 states have call predecessors, (28), 11 states have return successors, (32), 27 states have call predecessors, (32), 27 states have call successors, (32) [2024-11-23 23:30:21,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 153 transitions. [2024-11-23 23:30:21,399 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 153 transitions. Word has length 77 [2024-11-23 23:30:21,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:30:21,400 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 153 transitions. [2024-11-23 23:30:21,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-23 23:30:21,401 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 153 transitions. [2024-11-23 23:30:21,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-23 23:30:21,406 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:30:21,407 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:30:21,429 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b0342f-1824-4174-85c3-d65477e54e1c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 23:30:21,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b0342f-1824-4174-85c3-d65477e54e1c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-23 23:30:21,608 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:30:21,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:30:21,609 INFO L85 PathProgramCache]: Analyzing trace with hash 16386302, now seen corresponding path program 1 times [2024-11-23 23:30:21,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:30:21,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433687026] [2024-11-23 23:30:21,609 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:30:21,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:31:59,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:32:02,101 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-23 23:32:02,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:32:02,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433687026] [2024-11-23 23:32:02,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433687026] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:32:02,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85037768] [2024-11-23 23:32:02,102 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:32:02,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:32:02,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b0342f-1824-4174-85c3-d65477e54e1c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:32:02,105 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b0342f-1824-4174-85c3-d65477e54e1c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:32:02,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b0342f-1824-4174-85c3-d65477e54e1c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 23:33:43,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:33:43,507 INFO L256 TraceCheckSpWp]: Trace formula consists of 7614 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 23:33:43,515 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:33:43,557 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-23 23:33:43,557 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:33:43,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85037768] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:33:43,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:33:43,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-23 23:33:43,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726850856] [2024-11-23 23:33:43,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:33:43,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:33:43,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:33:43,563 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:33:43,563 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:33:43,564 INFO L87 Difference]: Start difference. First operand 118 states and 153 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-23 23:33:43,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:33:43,687 INFO L93 Difference]: Finished difference Result 214 states and 288 transitions. [2024-11-23 23:33:43,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:33:43,691 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 83 [2024-11-23 23:33:43,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:33:43,694 INFO L225 Difference]: With dead ends: 214 [2024-11-23 23:33:43,694 INFO L226 Difference]: Without dead ends: 121 [2024-11-23 23:33:43,695 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:33:43,696 INFO L435 NwaCegarLoop]: 143 mSDtfsCounter, 1 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:33:43,697 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 423 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:33:43,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-11-23 23:33:43,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 120. [2024-11-23 23:33:43,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 80 states have (on average 1.1875) internal successors, (95), 82 states have internal predecessors, (95), 28 states have call successors, (28), 10 states have call predecessors, (28), 11 states have return successors, (32), 27 states have call predecessors, (32), 27 states have call successors, (32) [2024-11-23 23:33:43,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 155 transitions. [2024-11-23 23:33:43,713 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 155 transitions. Word has length 83 [2024-11-23 23:33:43,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:33:43,714 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 155 transitions. [2024-11-23 23:33:43,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-23 23:33:43,714 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 155 transitions. [2024-11-23 23:33:43,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-23 23:33:43,717 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:33:43,717 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:33:43,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b0342f-1824-4174-85c3-d65477e54e1c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-23 23:33:43,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b0342f-1824-4174-85c3-d65477e54e1c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:33:43,918 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:33:43,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:33:43,918 INFO L85 PathProgramCache]: Analyzing trace with hash -2012199808, now seen corresponding path program 1 times [2024-11-23 23:33:43,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:33:43,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670102830] [2024-11-23 23:33:43,919 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:33:43,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:35:25,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:35:27,410 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-23 23:35:27,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:35:27,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670102830] [2024-11-23 23:35:27,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670102830] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:35:27,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739643644] [2024-11-23 23:35:27,413 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:35:27,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:35:27,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b0342f-1824-4174-85c3-d65477e54e1c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:35:27,418 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b0342f-1824-4174-85c3-d65477e54e1c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:35:27,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b0342f-1824-4174-85c3-d65477e54e1c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 23:37:21,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:37:21,397 INFO L256 TraceCheckSpWp]: Trace formula consists of 7609 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 23:37:21,402 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:37:21,438 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-23 23:37:21,438 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:37:21,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739643644] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:37:21,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:37:21,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-23 23:37:21,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876256481] [2024-11-23 23:37:21,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:37:21,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:37:21,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:37:21,439 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:37:21,439 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:37:21,440 INFO L87 Difference]: Start difference. First operand 120 states and 155 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-23 23:37:21,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:37:21,555 INFO L93 Difference]: Finished difference Result 217 states and 291 transitions. [2024-11-23 23:37:21,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:37:21,556 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 83 [2024-11-23 23:37:21,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:37:21,558 INFO L225 Difference]: With dead ends: 217 [2024-11-23 23:37:21,558 INFO L226 Difference]: Without dead ends: 122 [2024-11-23 23:37:21,559 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:37:21,560 INFO L435 NwaCegarLoop]: 144 mSDtfsCounter, 0 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:37:21,561 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 424 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:37:21,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-23 23:37:21,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2024-11-23 23:37:21,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 82 states have (on average 1.1829268292682926) internal successors, (97), 84 states have internal predecessors, (97), 28 states have call successors, (28), 10 states have call predecessors, (28), 11 states have return successors, (32), 27 states have call predecessors, (32), 27 states have call successors, (32) [2024-11-23 23:37:21,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 157 transitions. [2024-11-23 23:37:21,577 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 157 transitions. Word has length 83 [2024-11-23 23:37:21,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:37:21,578 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 157 transitions. [2024-11-23 23:37:21,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-23 23:37:21,578 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 157 transitions. [2024-11-23 23:37:21,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-23 23:37:21,580 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:37:21,581 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:37:21,610 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b0342f-1824-4174-85c3-d65477e54e1c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-23 23:37:21,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b0342f-1824-4174-85c3-d65477e54e1c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:37:21,781 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:37:21,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:37:21,782 INFO L85 PathProgramCache]: Analyzing trace with hash -427514372, now seen corresponding path program 1 times [2024-11-23 23:37:21,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:37:21,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124399926] [2024-11-23 23:37:21,782 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:37:21,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:39:14,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:39:17,100 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-23 23:39:17,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:39:17,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124399926] [2024-11-23 23:39:17,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124399926] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:39:17,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965856858] [2024-11-23 23:39:17,102 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:39:17,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:39:17,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b0342f-1824-4174-85c3-d65477e54e1c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:39:17,108 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b0342f-1824-4174-85c3-d65477e54e1c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:39:17,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b0342f-1824-4174-85c3-d65477e54e1c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 23:41:05,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:41:05,672 INFO L256 TraceCheckSpWp]: Trace formula consists of 7617 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-23 23:41:05,678 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:41:06,438 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-23 23:41:06,439 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:41:06,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965856858] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:41:06,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:41:06,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2024-11-23 23:41:06,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442139335] [2024-11-23 23:41:06,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:41:06,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:41:06,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:41:06,441 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:41:06,441 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:41:06,441 INFO L87 Difference]: Start difference. First operand 122 states and 157 transitions. Second operand has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-23 23:41:07,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:41:07,734 INFO L93 Difference]: Finished difference Result 216 states and 279 transitions. [2024-11-23 23:41:07,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 23:41:07,735 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 83 [2024-11-23 23:41:07,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:41:07,737 INFO L225 Difference]: With dead ends: 216 [2024-11-23 23:41:07,741 INFO L226 Difference]: Without dead ends: 122 [2024-11-23 23:41:07,741 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-11-23 23:41:07,742 INFO L435 NwaCegarLoop]: 116 mSDtfsCounter, 158 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:41:07,743 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 537 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-23 23:41:07,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-23 23:41:07,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2024-11-23 23:41:07,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 82 states have (on average 1.1829268292682926) internal successors, (97), 84 states have internal predecessors, (97), 28 states have call successors, (28), 10 states have call predecessors, (28), 11 states have return successors, (30), 27 states have call predecessors, (30), 27 states have call successors, (30) [2024-11-23 23:41:07,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 155 transitions. [2024-11-23 23:41:07,767 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 155 transitions. Word has length 83 [2024-11-23 23:41:07,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:41:07,770 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 155 transitions. [2024-11-23 23:41:07,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-23 23:41:07,770 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 155 transitions. [2024-11-23 23:41:07,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-23 23:41:07,775 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:41:07,776 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:41:07,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b0342f-1824-4174-85c3-d65477e54e1c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-23 23:41:07,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b0342f-1824-4174-85c3-d65477e54e1c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:41:07,976 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:41:07,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:41:07,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1964885625, now seen corresponding path program 2 times [2024-11-23 23:41:07,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:41:07,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81292417] [2024-11-23 23:41:07,977 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 23:41:07,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms