./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_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_c64a12ff-d005-40e8-86ba-a08955a403b3/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64a12ff-d005-40e8-86ba-a08955a403b3/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64a12ff-d005-40e8-86ba-a08955a403b3/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64a12ff-d005-40e8-86ba-a08955a403b3/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64a12ff-d005-40e8-86ba-a08955a403b3/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64a12ff-d005-40e8-86ba-a08955a403b3/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 5ab09f6d00b35855a638bb480b97a9e37405f3b4b54804a74b9b206823c7f543 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:22:06,435 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:22:06,542 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64a12ff-d005-40e8-86ba-a08955a403b3/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-27 23:22:06,551 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:22:06,552 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:22:06,576 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:22:06,576 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:22:06,577 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:22:06,577 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:22:06,577 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:22:06,577 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:22:06,578 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:22:06,578 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:22:06,578 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:22:06,578 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:22:06,579 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:22:06,579 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 23:22:06,579 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:22:06,579 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:22:06,579 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 23:22:06,579 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:22:06,579 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 23:22:06,579 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 23:22:06,579 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:22:06,580 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:22:06,580 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:22:06,580 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:22:06,580 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:22:06,580 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:22:06,580 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:22:06,581 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:22:06,581 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:22:06,581 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:22:06,581 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:22:06,581 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:22:06,581 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:22:06,582 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:22:06,584 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 23:22:06,585 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 23:22:06,585 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 23:22:06,585 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 23:22:06,585 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:22:06,585 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:22:06,585 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:22:06,585 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:22:06,585 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_c64a12ff-d005-40e8-86ba-a08955a403b3/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ab09f6d00b35855a638bb480b97a9e37405f3b4b54804a74b9b206823c7f543 [2024-11-27 23:22:06,915 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:22:06,924 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:22:06,928 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:22:06,929 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:22:06,930 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:22:06,933 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64a12ff-d005-40e8-86ba-a08955a403b3/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness.i [2024-11-27 23:22:09,885 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64a12ff-d005-40e8-86ba-a08955a403b3/bin/uautomizer-verify-aQ6SnzHsRB/data/6f69a02cd/f2ae7aef3d7d44089c77cef3fa880144/FLAGf2160cd2f [2024-11-27 23:22:10,523 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:22:10,523 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64a12ff-d005-40e8-86ba-a08955a403b3/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness.i [2024-11-27 23:22:10,560 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64a12ff-d005-40e8-86ba-a08955a403b3/bin/uautomizer-verify-aQ6SnzHsRB/data/6f69a02cd/f2ae7aef3d7d44089c77cef3fa880144/FLAGf2160cd2f [2024-11-27 23:22:10,583 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64a12ff-d005-40e8-86ba-a08955a403b3/bin/uautomizer-verify-aQ6SnzHsRB/data/6f69a02cd/f2ae7aef3d7d44089c77cef3fa880144 [2024-11-27 23:22:10,586 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:22:10,587 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:22:10,589 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:22:10,589 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:22:10,594 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:22:10,595 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:22:10" (1/1) ... [2024-11-27 23:22:10,598 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71e4d420 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:10, skipping insertion in model container [2024-11-27 23:22:10,598 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:22:10" (1/1) ... [2024-11-27 23:22:10,732 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:22:11,007 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_c64a12ff-d005-40e8-86ba-a08955a403b3/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness.i[4489,4502] [2024-11-27 23:22:11,015 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_c64a12ff-d005-40e8-86ba-a08955a403b3/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness.i[4549,4562] [2024-11-27 23:22:12,015 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 23:22:12,016 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 23:22:12,016 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 23:22:12,017 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 23:22:12,020 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 23:22:12,036 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 23:22:12,037 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 23:22:12,039 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 23:22:12,039 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 23:22:12,948 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 23:22:12,949 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 23:22:13,047 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:22:13,125 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 23:22:13,143 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_c64a12ff-d005-40e8-86ba-a08955a403b3/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness.i[4489,4502] [2024-11-27 23:22:13,143 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_c64a12ff-d005-40e8-86ba-a08955a403b3/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness.i[4549,4562] [2024-11-27 23:22:13,201 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 23:22:13,201 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 23:22:13,201 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 23:22:13,202 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 23:22:13,202 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 23:22:13,209 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 23:22:13,209 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 23:22:13,210 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 23:22:13,211 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 23:22:13,380 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8277] [2024-11-27 23:22:13,381 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 23:22:13,382 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 23:22:13,398 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8763-8774] [2024-11-27 23:22:13,422 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:22:13,731 INFO L204 MainTranslator]: Completed translation [2024-11-27 23:22:13,732 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:13 WrapperNode [2024-11-27 23:22:13,732 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:22:13,734 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 23:22:13,734 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 23:22:13,734 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 23:22:13,744 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:13" (1/1) ... [2024-11-27 23:22:13,853 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:13" (1/1) ... [2024-11-27 23:22:13,955 INFO L138 Inliner]: procedures = 680, calls = 2668, calls flagged for inlining = 60, calls inlined = 6, statements flattened = 902 [2024-11-27 23:22:13,956 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 23:22:13,956 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 23:22:13,957 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 23:22:13,957 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 23:22:13,971 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:13" (1/1) ... [2024-11-27 23:22:13,971 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:13" (1/1) ... [2024-11-27 23:22:13,987 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:13" (1/1) ... [2024-11-27 23:22:14,101 INFO L175 MemorySlicer]: Split 578 memory accesses to 6 slices as follows [2, 257, 238, 6, 9, 66]. 44 percent of accesses are in the largest equivalence class. The 29 initializations are split as follows [2, 0, 6, 0, 5, 16]. The 497 writes are split as follows [0, 257, 232, 2, 0, 6]. [2024-11-27 23:22:14,105 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:13" (1/1) ... [2024-11-27 23:22:14,106 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:13" (1/1) ... [2024-11-27 23:22:14,148 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:13" (1/1) ... [2024-11-27 23:22:14,151 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:13" (1/1) ... [2024-11-27 23:22:14,154 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:13" (1/1) ... [2024-11-27 23:22:14,162 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:13" (1/1) ... [2024-11-27 23:22:14,170 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:13" (1/1) ... [2024-11-27 23:22:14,190 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 23:22:14,191 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 23:22:14,191 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 23:22:14,191 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 23:22:14,197 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:13" (1/1) ... [2024-11-27 23:22:14,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:22:14,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64a12ff-d005-40e8-86ba-a08955a403b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:22:14,240 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64a12ff-d005-40e8-86ba-a08955a403b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 23:22:14,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64a12ff-d005-40e8-86ba-a08955a403b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 23:22:14,278 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2024-11-27 23:22:14,280 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2024-11-27 23:22:14,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-27 23:22:14,281 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-27 23:22:14,281 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-27 23:22:14,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-27 23:22:14,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-27 23:22:14,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-27 23:22:14,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-27 23:22:14,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-27 23:22:14,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-27 23:22:14,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-27 23:22:14,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-27 23:22:14,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-27 23:22:14,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-27 23:22:14,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-27 23:22:14,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-27 23:22:14,284 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-27 23:22:14,284 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-27 23:22:14,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-27 23:22:14,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 23:22:14,284 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2024-11-27 23:22:14,284 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2024-11-27 23:22:14,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-27 23:22:14,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-27 23:22:14,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-27 23:22:14,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-27 23:22:14,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-27 23:22:14,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-27 23:22:14,285 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_buf_has_allocated_buffer_member [2024-11-27 23:22:14,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_buf_has_allocated_buffer_member [2024-11-27 23:22:14,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 23:22:14,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 23:22:14,285 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-27 23:22:14,285 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-27 23:22:14,285 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2024-11-27 23:22:14,285 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2024-11-27 23:22:14,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-27 23:22:14,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-27 23:22:14,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-27 23:22:14,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-27 23:22:14,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-27 23:22:14,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-11-27 23:22:14,286 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-27 23:22:14,286 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-27 23:22:14,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-27 23:22:14,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-27 23:22:14,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-27 23:22:14,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-27 23:22:14,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-27 23:22:14,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-27 23:22:14,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-27 23:22:14,286 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq [2024-11-27 23:22:14,286 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq [2024-11-27 23:22:14,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-27 23:22:14,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-27 23:22:14,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-27 23:22:14,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-27 23:22:14,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-27 23:22:14,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-27 23:22:14,291 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-11-27 23:22:14,291 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-11-27 23:22:14,291 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-27 23:22:14,291 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-27 23:22:14,291 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_bounded [2024-11-27 23:22:14,291 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_bounded [2024-11-27 23:22:14,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-27 23:22:14,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-27 23:22:14,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-27 23:22:14,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-27 23:22:14,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-27 23:22:14,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-27 23:22:14,292 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_buf_equivalence [2024-11-27 23:22:14,292 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_buf_equivalence [2024-11-27 23:22:14,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 23:22:14,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-27 23:22:14,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-27 23:22:14,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-27 23:22:14,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-27 23:22:14,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-27 23:22:14,626 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 23:22:14,628 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 23:22:24,151 INFO L? ?]: Removed 94 outVars from TransFormulas that were not future-live. [2024-11-27 23:22:24,152 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 23:22:24,172 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 23:22:24,172 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-27 23:22:24,174 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:22:24 BoogieIcfgContainer [2024-11-27 23:22:24,175 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 23:22:24,177 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 23:22:24,177 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 23:22:24,184 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 23:22:24,184 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:22:10" (1/3) ... [2024-11-27 23:22:24,186 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52121b25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:22:24, skipping insertion in model container [2024-11-27 23:22:24,186 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:22:13" (2/3) ... [2024-11-27 23:22:24,186 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52121b25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:22:24, skipping insertion in model container [2024-11-27 23:22:24,187 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:22:24" (3/3) ... [2024-11-27 23:22:24,188 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_eq_harness.i [2024-11-27 23:22:24,204 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 23:22:24,206 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_byte_buf_eq_harness.i that has 14 procedures, 153 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-27 23:22:24,268 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:22:24,281 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;@6a9ac844, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:22:24,281 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 23:22:24,285 INFO L276 IsEmpty]: Start isEmpty. Operand has 153 states, 92 states have (on average 1.2282608695652173) internal successors, (113), 93 states have internal predecessors, (113), 46 states have call successors, (46), 13 states have call predecessors, (46), 13 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-27 23:22:24,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-27 23:22:24,298 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:22:24,299 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:22:24,299 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:22:24,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:22:24,304 INFO L85 PathProgramCache]: Analyzing trace with hash 379353637, now seen corresponding path program 1 times [2024-11-27 23:22:24,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:22:24,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175293672] [2024-11-27 23:22:24,313 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:22:24,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:23:56,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:23:57,267 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-11-27 23:23:57,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:23:57,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175293672] [2024-11-27 23:23:57,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175293672] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:23:57,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800352144] [2024-11-27 23:23:57,271 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:23:57,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:23:57,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64a12ff-d005-40e8-86ba-a08955a403b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:23:57,276 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64a12ff-d005-40e8-86ba-a08955a403b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:23:57,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64a12ff-d005-40e8-86ba-a08955a403b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 23:25:32,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:32,388 INFO L256 TraceCheckSpWp]: Trace formula consists of 7876 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-27 23:25:32,405 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:25:32,428 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-11-27 23:25:32,428 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:25:32,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800352144] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:32,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:25:32,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-27 23:25:32,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478412693] [2024-11-27 23:25:32,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:32,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 23:25:32,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:32,456 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 23:25:32,457 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 23:25:32,459 INFO L87 Difference]: Start difference. First operand has 153 states, 92 states have (on average 1.2282608695652173) internal successors, (113), 93 states have internal predecessors, (113), 46 states have call successors, (46), 13 states have call predecessors, (46), 13 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Second operand has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-27 23:25:32,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:32,510 INFO L93 Difference]: Finished difference Result 302 states and 436 transitions. [2024-11-27 23:25:32,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 23:25:32,512 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 113 [2024-11-27 23:25:32,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:32,519 INFO L225 Difference]: With dead ends: 302 [2024-11-27 23:25:32,520 INFO L226 Difference]: Without dead ends: 148 [2024-11-27 23:25:32,524 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 23:25:32,528 INFO L435 NwaCegarLoop]: 203 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, 203 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:32,529 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:25:32,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-11-27 23:25:32,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2024-11-27 23:25:32,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 88 states have (on average 1.2159090909090908) internal successors, (107), 89 states have internal predecessors, (107), 46 states have call successors, (46), 13 states have call predecessors, (46), 13 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-27 23:25:32,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 198 transitions. [2024-11-27 23:25:32,596 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 198 transitions. Word has length 113 [2024-11-27 23:25:32,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:32,598 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 198 transitions. [2024-11-27 23:25:32,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-27 23:25:32,598 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 198 transitions. [2024-11-27 23:25:32,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-27 23:25:32,605 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:32,605 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:25:32,633 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64a12ff-d005-40e8-86ba-a08955a403b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 23:25:32,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64a12ff-d005-40e8-86ba-a08955a403b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-27 23:25:32,807 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:32,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:32,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1294752093, now seen corresponding path program 1 times [2024-11-27 23:25:32,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:32,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978639166] [2024-11-27 23:25:32,808 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:32,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:03,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:07,242 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-11-27 23:27:07,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:07,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978639166] [2024-11-27 23:27:07,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978639166] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:27:07,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261610757] [2024-11-27 23:27:07,243 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:07,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:07,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64a12ff-d005-40e8-86ba-a08955a403b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:27:07,246 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64a12ff-d005-40e8-86ba-a08955a403b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:27:07,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64a12ff-d005-40e8-86ba-a08955a403b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 23:28:40,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:28:40,972 INFO L256 TraceCheckSpWp]: Trace formula consists of 7876 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 23:28:40,983 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:28:41,742 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-27 23:28:41,746 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:28:41,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261610757] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:28:41,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:28:41,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2024-11-27 23:28:41,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671677715] [2024-11-27 23:28:41,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:28:41,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:28:41,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:28:41,748 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:28:41,748 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:28:41,748 INFO L87 Difference]: Start difference. First operand 148 states and 198 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-27 23:28:43,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:28:43,202 INFO L93 Difference]: Finished difference Result 292 states and 395 transitions. [2024-11-27 23:28:43,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:28:43,203 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 113 [2024-11-27 23:28:43,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:28:43,208 INFO L225 Difference]: With dead ends: 292 [2024-11-27 23:28:43,208 INFO L226 Difference]: Without dead ends: 151 [2024-11-27 23:28:43,210 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:28:43,211 INFO L435 NwaCegarLoop]: 155 mSDtfsCounter, 193 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:28:43,211 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 433 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-27 23:28:43,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2024-11-27 23:28:43,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2024-11-27 23:28:43,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 90 states have (on average 1.211111111111111) internal successors, (109), 92 states have internal predecessors, (109), 46 states have call successors, (46), 13 states have call predecessors, (46), 14 states have return successors, (51), 45 states have call predecessors, (51), 45 states have call successors, (51) [2024-11-27 23:28:43,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 206 transitions. [2024-11-27 23:28:43,236 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 206 transitions. Word has length 113 [2024-11-27 23:28:43,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:28:43,236 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 206 transitions. [2024-11-27 23:28:43,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-27 23:28:43,237 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 206 transitions. [2024-11-27 23:28:43,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-27 23:28:43,239 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:28:43,240 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:28:43,264 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64a12ff-d005-40e8-86ba-a08955a403b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 23:28:43,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64a12ff-d005-40e8-86ba-a08955a403b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:28:43,440 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:28:43,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:28:43,441 INFO L85 PathProgramCache]: Analyzing trace with hash 747366190, now seen corresponding path program 1 times [2024-11-27 23:28:43,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:28:43,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464643696] [2024-11-27 23:28:43,441 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:28:43,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:30:21,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:30:24,803 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-11-27 23:30:24,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:30:24,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464643696] [2024-11-27 23:30:24,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464643696] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:30:24,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136355979] [2024-11-27 23:30:24,804 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:30:24,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:30:24,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64a12ff-d005-40e8-86ba-a08955a403b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:30:24,809 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64a12ff-d005-40e8-86ba-a08955a403b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:30:24,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64a12ff-d005-40e8-86ba-a08955a403b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 23:32:07,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:32:07,573 INFO L256 TraceCheckSpWp]: Trace formula consists of 7893 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-27 23:32:07,581 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:32:08,434 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-27 23:32:08,434 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:32:08,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136355979] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:32:08,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:32:08,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2024-11-27 23:32:08,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232242119] [2024-11-27 23:32:08,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:32:08,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 23:32:08,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:32:08,436 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 23:32:08,436 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:32:08,437 INFO L87 Difference]: Start difference. First operand 151 states and 206 transitions. Second operand has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-27 23:32:10,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:32:10,094 INFO L93 Difference]: Finished difference Result 247 states and 339 transitions. [2024-11-27 23:32:10,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 23:32:10,096 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) Word has length 119 [2024-11-27 23:32:10,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:32:10,099 INFO L225 Difference]: With dead ends: 247 [2024-11-27 23:32:10,099 INFO L226 Difference]: Without dead ends: 151 [2024-11-27 23:32:10,101 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-11-27 23:32:10,102 INFO L435 NwaCegarLoop]: 154 mSDtfsCounter, 194 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:32:10,102 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 580 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-27 23:32:10,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2024-11-27 23:32:10,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2024-11-27 23:32:10,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 90 states have (on average 1.211111111111111) internal successors, (109), 92 states have internal predecessors, (109), 46 states have call successors, (46), 13 states have call predecessors, (46), 14 states have return successors, (49), 45 states have call predecessors, (49), 45 states have call successors, (49) [2024-11-27 23:32:10,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 204 transitions. [2024-11-27 23:32:10,124 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 204 transitions. Word has length 119 [2024-11-27 23:32:10,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:32:10,125 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 204 transitions. [2024-11-27 23:32:10,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-27 23:32:10,125 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 204 transitions. [2024-11-27 23:32:10,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-27 23:32:10,128 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:32:10,128 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:32:10,163 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64a12ff-d005-40e8-86ba-a08955a403b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-27 23:32:10,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64a12ff-d005-40e8-86ba-a08955a403b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:10,329 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:32:10,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:32:10,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1364020924, now seen corresponding path program 2 times [2024-11-27 23:32:10,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:32:10,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872971476] [2024-11-27 23:32:10,330 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:32:10,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:33:50,522 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 23:33:50,522 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:33:56,525 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-11-27 23:33:56,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:33:56,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872971476] [2024-11-27 23:33:56,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872971476] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:33:56,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:33:56,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-27 23:33:56,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553429526] [2024-11-27 23:33:56,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:33:56,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 23:33:56,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:33:56,527 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 23:33:56,528 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:33:56,528 INFO L87 Difference]: Start difference. First operand 151 states and 204 transitions. Second operand has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-27 23:33:57,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:33:57,116 INFO L93 Difference]: Finished difference Result 163 states and 223 transitions. [2024-11-27 23:33:57,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:33:57,117 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 131 [2024-11-27 23:33:57,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:33:57,120 INFO L225 Difference]: With dead ends: 163 [2024-11-27 23:33:57,120 INFO L226 Difference]: Without dead ends: 161 [2024-11-27 23:33:57,121 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 [2024-11-27 23:33:57,122 INFO L435 NwaCegarLoop]: 199 mSDtfsCounter, 3 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1368 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:33:57,122 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1368 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 23:33:57,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-11-27 23:33:57,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 160. [2024-11-27 23:33:57,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 96 states have (on average 1.1979166666666667) internal successors, (115), 99 states have internal predecessors, (115), 47 states have call successors, (47), 14 states have call predecessors, (47), 16 states have return successors, (58), 46 states have call predecessors, (58), 46 states have call successors, (58) [2024-11-27 23:33:57,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 220 transitions. [2024-11-27 23:33:57,144 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 220 transitions. Word has length 131 [2024-11-27 23:33:57,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:33:57,145 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 220 transitions. [2024-11-27 23:33:57,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-27 23:33:57,146 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 220 transitions. [2024-11-27 23:33:57,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-27 23:33:57,148 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:33:57,148 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:33:57,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 23:33:57,148 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:33:57,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:33:57,149 INFO L85 PathProgramCache]: Analyzing trace with hash -164919222, now seen corresponding path program 1 times [2024-11-27 23:33:57,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:33:57,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794519833] [2024-11-27 23:33:57,149 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:33:57,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:35:27,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:35:30,176 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2024-11-27 23:35:30,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:35:30,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794519833] [2024-11-27 23:35:30,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794519833] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:35:30,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400606870] [2024-11-27 23:35:30,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:35:30,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:35:30,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64a12ff-d005-40e8-86ba-a08955a403b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:35:30,179 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64a12ff-d005-40e8-86ba-a08955a403b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:35:30,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c64a12ff-d005-40e8-86ba-a08955a403b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process