./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_mul_size_saturating_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b10af3-e0d0-4d8c-a746-6d09e04f0845/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b10af3-e0d0-4d8c-a746-6d09e04f0845/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b10af3-e0d0-4d8c-a746-6d09e04f0845/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b10af3-e0d0-4d8c-a746-6d09e04f0845/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_mul_size_saturating_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b10af3-e0d0-4d8c-a746-6d09e04f0845/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b10af3-e0d0-4d8c-a746-6d09e04f0845/bin/uautomizer-verify-qhAvR1uOyd --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 0f5ff1c08c55a92aff06fce55a4ad0167f5dcf5fb5557c6a304be36abfa8056c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 12:44:58,822 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 12:44:58,934 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b10af3-e0d0-4d8c-a746-6d09e04f0845/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-13 12:44:58,941 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 12:44:58,941 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 12:44:58,979 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 12:44:58,979 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 12:44:58,980 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 12:44:58,980 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 12:44:58,980 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 12:44:58,980 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 12:44:58,980 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 12:44:58,984 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 12:44:58,984 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 12:44:58,984 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 12:44:58,985 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 12:44:58,985 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 12:44:58,985 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 12:44:58,985 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 12:44:58,985 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 12:44:58,985 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 12:44:58,985 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 12:44:58,985 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 12:44:58,985 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 12:44:58,986 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 12:44:58,986 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 12:44:58,986 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 12:44:58,986 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 12:44:58,986 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 12:44:58,986 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 12:44:58,986 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 12:44:58,987 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 12:44:58,989 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 12:44:58,989 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 12:44:58,990 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 12:44:58,990 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 12:44:58,990 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 12:44:58,990 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 12:44:58,990 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 12:44:58,990 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_86b10af3-e0d0-4d8c-a746-6d09e04f0845/bin/uautomizer-verify-qhAvR1uOyd 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 -> 0f5ff1c08c55a92aff06fce55a4ad0167f5dcf5fb5557c6a304be36abfa8056c [2024-11-13 12:44:59,435 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 12:44:59,447 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 12:44:59,450 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 12:44:59,452 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 12:44:59,452 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 12:44:59,454 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b10af3-e0d0-4d8c-a746-6d09e04f0845/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/aws-c-common/aws_mul_size_saturating_harness.i Unable to find full path for "g++" [2024-11-13 12:45:01,692 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 12:45:02,179 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 12:45:02,180 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b10af3-e0d0-4d8c-a746-6d09e04f0845/sv-benchmarks/c/aws-c-common/aws_mul_size_saturating_harness.i [2024-11-13 12:45:02,209 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b10af3-e0d0-4d8c-a746-6d09e04f0845/bin/uautomizer-verify-qhAvR1uOyd/data/b13f3adab/f5d52f0e74a14ee9ab52c78287e5688b/FLAG5fb267b44 [2024-11-13 12:45:02,228 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b10af3-e0d0-4d8c-a746-6d09e04f0845/bin/uautomizer-verify-qhAvR1uOyd/data/b13f3adab/f5d52f0e74a14ee9ab52c78287e5688b [2024-11-13 12:45:02,231 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 12:45:02,233 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 12:45:02,235 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 12:45:02,235 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 12:45:02,241 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 12:45:02,242 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 12:45:02" (1/1) ... [2024-11-13 12:45:02,245 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73ef31f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:45:02, skipping insertion in model container [2024-11-13 12:45:02,245 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 12:45:02" (1/1) ... [2024-11-13 12:45:02,360 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 12:45:02,655 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_86b10af3-e0d0-4d8c-a746-6d09e04f0845/sv-benchmarks/c/aws-c-common/aws_mul_size_saturating_harness.i[4497,4510] [2024-11-13 12:45:02,662 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_86b10af3-e0d0-4d8c-a746-6d09e04f0845/sv-benchmarks/c/aws-c-common/aws_mul_size_saturating_harness.i[4557,4570] [2024-11-13 12:45:03,461 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 12:45:03,462 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 12:45:03,462 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 12:45:03,463 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 12:45:03,465 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 12:45:03,481 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 12:45:03,482 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 12:45:03,484 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 12:45:03,485 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 12:45:03,487 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 12:45:03,488 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 12:45:03,489 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 12:45:03,490 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 12:45:04,141 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_86b10af3-e0d0-4d8c-a746-6d09e04f0845/sv-benchmarks/c/aws-c-common/aws_mul_size_saturating_harness.i[156447,156460] [2024-11-13 12:45:04,143 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_86b10af3-e0d0-4d8c-a746-6d09e04f0845/sv-benchmarks/c/aws-c-common/aws_mul_size_saturating_harness.i[156666,156679] [2024-11-13 12:45:04,145 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_86b10af3-e0d0-4d8c-a746-6d09e04f0845/sv-benchmarks/c/aws-c-common/aws_mul_size_saturating_harness.i[156862,156875] [2024-11-13 12:45:04,146 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 12:45:04,184 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 12:45:04,198 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_86b10af3-e0d0-4d8c-a746-6d09e04f0845/sv-benchmarks/c/aws-c-common/aws_mul_size_saturating_harness.i[4497,4510] [2024-11-13 12:45:04,199 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_86b10af3-e0d0-4d8c-a746-6d09e04f0845/sv-benchmarks/c/aws-c-common/aws_mul_size_saturating_harness.i[4557,4570] [2024-11-13 12:45:04,260 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 12:45:04,261 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 12:45:04,262 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 12:45:04,263 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 12:45:04,264 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 12:45:04,281 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 12:45:04,286 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 12:45:04,287 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 12:45:04,288 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 12:45:04,289 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 12:45:04,293 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 12:45:04,294 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 12:45:04,294 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 12:45:04,405 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [6944-6955] [2024-11-13 12:45:04,437 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_86b10af3-e0d0-4d8c-a746-6d09e04f0845/sv-benchmarks/c/aws-c-common/aws_mul_size_saturating_harness.i[156447,156460] [2024-11-13 12:45:04,438 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_86b10af3-e0d0-4d8c-a746-6d09e04f0845/sv-benchmarks/c/aws-c-common/aws_mul_size_saturating_harness.i[156666,156679] [2024-11-13 12:45:04,439 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_86b10af3-e0d0-4d8c-a746-6d09e04f0845/sv-benchmarks/c/aws-c-common/aws_mul_size_saturating_harness.i[156862,156875] [2024-11-13 12:45:04,439 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 12:45:04,654 INFO L204 MainTranslator]: Completed translation [2024-11-13 12:45:04,655 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:45:04 WrapperNode [2024-11-13 12:45:04,655 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 12:45:04,656 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 12:45:04,656 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 12:45:04,656 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 12:45:04,662 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:45:04" (1/1) ... [2024-11-13 12:45:04,713 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:45:04" (1/1) ... [2024-11-13 12:45:04,772 INFO L138 Inliner]: procedures = 669, calls = 1209, calls flagged for inlining = 43, calls inlined = 6, statements flattened = 499 [2024-11-13 12:45:04,773 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 12:45:04,774 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 12:45:04,774 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 12:45:04,774 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 12:45:04,783 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:45:04" (1/1) ... [2024-11-13 12:45:04,783 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:45:04" (1/1) ... [2024-11-13 12:45:04,795 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:45:04" (1/1) ... [2024-11-13 12:45:04,889 INFO L175 MemorySlicer]: Split 240 memory accesses to 2 slices as follows [2, 238]. 99 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 6]. The 232 writes are split as follows [0, 232]. [2024-11-13 12:45:04,893 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:45:04" (1/1) ... [2024-11-13 12:45:04,893 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:45:04" (1/1) ... [2024-11-13 12:45:04,930 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:45:04" (1/1) ... [2024-11-13 12:45:04,933 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:45:04" (1/1) ... [2024-11-13 12:45:04,936 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:45:04" (1/1) ... [2024-11-13 12:45:04,942 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:45:04" (1/1) ... [2024-11-13 12:45:04,955 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 12:45:04,955 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 12:45:04,956 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 12:45:04,956 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 12:45:04,959 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:45:04" (1/1) ... [2024-11-13 12:45:04,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 12:45:05,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b10af3-e0d0-4d8c-a746-6d09e04f0845/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:45:05,027 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b10af3-e0d0-4d8c-a746-6d09e04f0845/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 12:45:05,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b10af3-e0d0-4d8c-a746-6d09e04f0845/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 12:45:05,061 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-13 12:45:05,062 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-13 12:45:05,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-13 12:45:05,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-13 12:45:05,062 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-13 12:45:05,062 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-13 12:45:05,062 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_u64_saturating [2024-11-13 12:45:05,063 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_u64_saturating [2024-11-13 12:45:05,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 12:45:05,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 12:45:05,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 12:45:05,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-13 12:45:05,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-13 12:45:05,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-13 12:45:05,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-13 12:45:05,064 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-13 12:45:05,064 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-13 12:45:05,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 12:45:05,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 12:45:05,342 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 12:45:05,344 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 12:45:11,490 INFO L? ?]: Removed 23 outVars from TransFormulas that were not future-live. [2024-11-13 12:45:11,490 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 12:45:11,500 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 12:45:11,500 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-13 12:45:11,501 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 12:45:11 BoogieIcfgContainer [2024-11-13 12:45:11,501 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 12:45:11,503 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 12:45:11,504 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 12:45:11,509 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 12:45:11,509 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 12:45:02" (1/3) ... [2024-11-13 12:45:11,510 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f90c57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 12:45:11, skipping insertion in model container [2024-11-13 12:45:11,510 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:45:04" (2/3) ... [2024-11-13 12:45:11,510 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f90c57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 12:45:11, skipping insertion in model container [2024-11-13 12:45:11,510 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 12:45:11" (3/3) ... [2024-11-13 12:45:11,512 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_mul_size_saturating_harness.i [2024-11-13 12:45:11,528 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 12:45:11,529 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_mul_size_saturating_harness.i that has 5 procedures, 42 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-13 12:45:11,590 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 12:45:11,607 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;@62b4d510, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 12:45:11,607 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 12:45:11,612 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 28 states have (on average 1.25) internal successors, (35), 31 states have internal predecessors, (35), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-13 12:45:11,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 12:45:11,623 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:45:11,623 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:45:11,624 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:45:11,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:45:11,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1434111465, now seen corresponding path program 1 times [2024-11-13 12:45:11,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:45:11,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586536778] [2024-11-13 12:45:11,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:45:11,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:45:19,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 12:45:19,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2061619574] [2024-11-13 12:45:19,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:45:19,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:45:19,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b10af3-e0d0-4d8c-a746-6d09e04f0845/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:45:19,312 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b10af3-e0d0-4d8c-a746-6d09e04f0845/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:45:19,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b10af3-e0d0-4d8c-a746-6d09e04f0845/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 12:52:59,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:52:59,970 INFO L255 TraceCheckSpWp]: Trace formula consists of 3731 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-13 12:52:59,981 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:53:01,775 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 12:53:01,775 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 12:53:01,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:53:01,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586536778] [2024-11-13 12:53:01,777 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 12:53:01,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061619574] [2024-11-13 12:53:01,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061619574] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:53:01,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:53:01,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 12:53:01,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608995123] [2024-11-13 12:53:01,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:53:01,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 12:53:01,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:53:01,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 12:53:01,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-13 12:53:01,812 INFO L87 Difference]: Start difference. First operand has 42 states, 28 states have (on average 1.25) internal successors, (35), 31 states have internal predecessors, (35), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 12:53:02,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:53:02,454 INFO L93 Difference]: Finished difference Result 58 states and 72 transitions. [2024-11-13 12:53:02,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 12:53:02,457 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2024-11-13 12:53:02,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:53:02,464 INFO L225 Difference]: With dead ends: 58 [2024-11-13 12:53:02,464 INFO L226 Difference]: Without dead ends: 36 [2024-11-13 12:53:02,467 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-13 12:53:02,472 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 3 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 12:53:02,473 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 197 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 12:53:02,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-13 12:53:02,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-11-13 12:53:02,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 27 states have internal predecessors, (29), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 12:53:02,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2024-11-13 12:53:02,516 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 20 [2024-11-13 12:53:02,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:53:02,517 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2024-11-13 12:53:02,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 12:53:02,518 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2024-11-13 12:53:02,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 12:53:02,520 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:53:02,520 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:53:02,720 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b10af3-e0d0-4d8c-a746-6d09e04f0845/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forcibly destroying the process [2024-11-13 12:53:02,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b10af3-e0d0-4d8c-a746-6d09e04f0845/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 137 [2024-11-13 12:53:02,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b10af3-e0d0-4d8c-a746-6d09e04f0845/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-13 12:53:02,781 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:53:02,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:53:02,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1436941610, now seen corresponding path program 1 times [2024-11-13 12:53:02,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:53:02,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229828728] [2024-11-13 12:53:02,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:53:02,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:53:10,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:53:13,988 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 12:53:13,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:53:14,003 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-13 12:53:14,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:53:14,019 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 12:53:14,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:53:14,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229828728] [2024-11-13 12:53:14,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229828728] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:53:14,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:53:14,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 12:53:14,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604569995] [2024-11-13 12:53:14,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:53:14,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 12:53:14,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:53:14,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 12:53:14,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 12:53:14,023 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 12:53:14,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:53:14,332 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2024-11-13 12:53:14,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 12:53:14,333 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2024-11-13 12:53:14,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:53:14,334 INFO L225 Difference]: With dead ends: 41 [2024-11-13 12:53:14,334 INFO L226 Difference]: Without dead ends: 34 [2024-11-13 12:53:14,334 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-13 12:53:14,337 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 1 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 12:53:14,339 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 179 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 12:53:14,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-13 12:53:14,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-11-13 12:53:14,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 25 states have internal predecessors, (26), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 12:53:14,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2024-11-13 12:53:14,350 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 20 [2024-11-13 12:53:14,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:53:14,352 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2024-11-13 12:53:14,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 12:53:14,353 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2024-11-13 12:53:14,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 12:53:14,353 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:53:14,354 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:53:14,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 12:53:14,354 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:53:14,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:53:14,354 INFO L85 PathProgramCache]: Analyzing trace with hash 340895897, now seen corresponding path program 1 times [2024-11-13 12:53:14,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:53:14,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702248539] [2024-11-13 12:53:14,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:53:14,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:53:21,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 12:53:21,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1610800017] [2024-11-13 12:53:21,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:53:21,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:53:21,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b10af3-e0d0-4d8c-a746-6d09e04f0845/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:53:21,430 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b10af3-e0d0-4d8c-a746-6d09e04f0845/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:53:21,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b10af3-e0d0-4d8c-a746-6d09e04f0845/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 12:54:37,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:54:37,624 INFO L255 TraceCheckSpWp]: Trace formula consists of 3732 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-13 12:54:37,629 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:54:38,051 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 12:54:38,052 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 12:54:38,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:54:38,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702248539] [2024-11-13 12:54:38,052 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 12:54:38,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610800017] [2024-11-13 12:54:38,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610800017] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:54:38,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:54:38,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 12:54:38,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012955369] [2024-11-13 12:54:38,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:54:38,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 12:54:38,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:54:38,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 12:54:38,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-13 12:54:38,054 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 12:54:38,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:54:38,539 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2024-11-13 12:54:38,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 12:54:38,539 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2024-11-13 12:54:38,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:54:38,540 INFO L225 Difference]: With dead ends: 38 [2024-11-13 12:54:38,540 INFO L226 Difference]: Without dead ends: 33 [2024-11-13 12:54:38,541 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-13 12:54:38,541 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 1 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 12:54:38,542 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 188 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 12:54:38,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-13 12:54:38,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-11-13 12:54:38,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 24 states have internal predecessors, (25), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 12:54:38,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2024-11-13 12:54:38,550 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 20 [2024-11-13 12:54:38,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:54:38,550 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2024-11-13 12:54:38,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 12:54:38,552 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2024-11-13 12:54:38,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 12:54:38,553 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:54:38,553 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:54:38,745 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b10af3-e0d0-4d8c-a746-6d09e04f0845/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 12:54:38,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b10af3-e0d0-4d8c-a746-6d09e04f0845/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:54:38,754 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:54:38,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:54:38,755 INFO L85 PathProgramCache]: Analyzing trace with hash 338065752, now seen corresponding path program 1 times [2024-11-13 12:54:38,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:54:38,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763770395] [2024-11-13 12:54:38,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:54:38,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:54:44,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 12:54:44,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [25902267] [2024-11-13 12:54:44,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:54:44,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:54:44,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b10af3-e0d0-4d8c-a746-6d09e04f0845/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:54:44,345 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b10af3-e0d0-4d8c-a746-6d09e04f0845/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:54:44,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b10af3-e0d0-4d8c-a746-6d09e04f0845/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 12:58:05,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:58:05,639 INFO L255 TraceCheckSpWp]: Trace formula consists of 3734 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 12:58:05,643 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:58:06,194 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 12:58:06,194 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 12:58:06,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:58:06,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763770395] [2024-11-13 12:58:06,194 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 12:58:06,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25902267] [2024-11-13 12:58:06,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25902267] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:58:06,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:58:06,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 12:58:06,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2827372] [2024-11-13 12:58:06,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:58:06,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 12:58:06,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:58:06,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 12:58:06,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 12:58:06,196 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 12:58:06,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:58:06,279 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2024-11-13 12:58:06,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 12:58:06,280 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2024-11-13 12:58:06,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:58:06,281 INFO L225 Difference]: With dead ends: 37 [2024-11-13 12:58:06,282 INFO L226 Difference]: Without dead ends: 26 [2024-11-13 12:58:06,282 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 12:58:06,283 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 12:58:06,284 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 119 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 12:58:06,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-13 12:58:06,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-11-13 12:58:06,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 12:58:06,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2024-11-13 12:58:06,292 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 20 [2024-11-13 12:58:06,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:58:06,293 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2024-11-13 12:58:06,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 12:58:06,293 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2024-11-13 12:58:06,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-13 12:58:06,293 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:58:06,296 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:58:06,496 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b10af3-e0d0-4d8c-a746-6d09e04f0845/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forcibly destroying the process [2024-11-13 12:58:06,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b10af3-e0d0-4d8c-a746-6d09e04f0845/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 137 [2024-11-13 12:58:06,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b10af3-e0d0-4d8c-a746-6d09e04f0845/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:58:06,554 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:58:06,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:58:06,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1147099788, now seen corresponding path program 1 times [2024-11-13 12:58:06,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:58:06,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247230865] [2024-11-13 12:58:06,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:58:06,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:58:12,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:58:15,428 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 12:58:15,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:58:15,435 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 12:58:15,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:58:15,442 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-13 12:58:15,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:58:15,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:58:15,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:58:15,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247230865] [2024-11-13 12:58:15,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247230865] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:58:15,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:58:15,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 12:58:15,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984547852] [2024-11-13 12:58:15,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:58:15,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 12:58:15,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:58:15,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 12:58:15,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-13 12:58:15,640 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 12:58:15,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:58:15,944 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2024-11-13 12:58:15,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 12:58:15,945 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2024-11-13 12:58:15,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:58:15,946 INFO L225 Difference]: With dead ends: 36 [2024-11-13 12:58:15,946 INFO L226 Difference]: Without dead ends: 31 [2024-11-13 12:58:15,947 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-13 12:58:15,949 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 2 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 12:58:15,950 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 143 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 12:58:15,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-13 12:58:15,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2024-11-13 12:58:15,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.1) internal successors, (22), 21 states have internal predecessors, (22), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 12:58:15,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2024-11-13 12:58:15,962 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 24 [2024-11-13 12:58:15,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:58:15,963 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2024-11-13 12:58:15,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 12:58:15,963 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2024-11-13 12:58:15,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-13 12:58:15,963 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:58:15,963 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:58:15,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 12:58:15,964 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:58:15,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:58:15,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1144269643, now seen corresponding path program 1 times [2024-11-13 12:58:15,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:58:15,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991888237] [2024-11-13 12:58:15,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:58:15,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:58:21,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 12:58:21,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1982871141] [2024-11-13 12:58:21,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:58:21,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:58:21,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b10af3-e0d0-4d8c-a746-6d09e04f0845/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:58:21,709 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b10af3-e0d0-4d8c-a746-6d09e04f0845/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:58:21,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86b10af3-e0d0-4d8c-a746-6d09e04f0845/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process