./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_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_48005176-22cd-4bae-b031-5aa4b2749d9f/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48005176-22cd-4bae-b031-5aa4b2749d9f/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48005176-22cd-4bae-b031-5aa4b2749d9f/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48005176-22cd-4bae-b031-5aa4b2749d9f/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48005176-22cd-4bae-b031-5aa4b2749d9f/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48005176-22cd-4bae-b031-5aa4b2749d9f/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 7d9514ee1b6f3a0027f117bcf81d6b26d525fe99251459ecef3c46cad248dd1f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 13:07:17,288 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 13:07:17,344 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48005176-22cd-4bae-b031-5aa4b2749d9f/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-12-02 13:07:17,349 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 13:07:17,349 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 13:07:17,371 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 13:07:17,372 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 13:07:17,372 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 13:07:17,372 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 13:07:17,372 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 13:07:17,372 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 13:07:17,373 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 13:07:17,373 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 13:07:17,373 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 13:07:17,373 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 13:07:17,373 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 13:07:17,373 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 13:07:17,373 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 13:07:17,374 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 13:07:17,374 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 13:07:17,374 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 13:07:17,374 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 13:07:17,374 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 13:07:17,374 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 13:07:17,374 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 13:07:17,374 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 13:07:17,374 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 13:07:17,374 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 13:07:17,375 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 13:07:17,375 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:07:17,375 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 13:07:17,375 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 13:07:17,375 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 13:07:17,375 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 13:07:17,375 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:07:17,375 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 13:07:17,375 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 13:07:17,375 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 13:07:17,375 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 13:07:17,375 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 13:07:17,376 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 13:07:17,376 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 13:07:17,376 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 13:07:17,376 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 13:07:17,376 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 13:07:17,376 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_48005176-22cd-4bae-b031-5aa4b2749d9f/bin/uautomizer-verify-84ZbGMXZE1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7d9514ee1b6f3a0027f117bcf81d6b26d525fe99251459ecef3c46cad248dd1f [2024-12-02 13:07:17,618 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 13:07:17,626 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 13:07:17,629 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 13:07:17,630 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 13:07:17,630 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 13:07:17,631 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48005176-22cd-4bae-b031-5aa4b2749d9f/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i [2024-12-02 13:07:20,283 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48005176-22cd-4bae-b031-5aa4b2749d9f/bin/uautomizer-verify-84ZbGMXZE1/data/b28f1dd66/0bb0cef81ab94d8581e0836c09d2ff67/FLAG2f601d462 [2024-12-02 13:07:20,713 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 13:07:20,713 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48005176-22cd-4bae-b031-5aa4b2749d9f/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i [2024-12-02 13:07:20,741 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48005176-22cd-4bae-b031-5aa4b2749d9f/bin/uautomizer-verify-84ZbGMXZE1/data/b28f1dd66/0bb0cef81ab94d8581e0836c09d2ff67/FLAG2f601d462 [2024-12-02 13:07:20,851 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48005176-22cd-4bae-b031-5aa4b2749d9f/bin/uautomizer-verify-84ZbGMXZE1/data/b28f1dd66/0bb0cef81ab94d8581e0836c09d2ff67 [2024-12-02 13:07:20,852 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 13:07:20,853 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 13:07:20,854 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 13:07:20,855 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 13:07:20,858 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 13:07:20,858 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:07:20" (1/1) ... [2024-12-02 13:07:20,859 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3059aa1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:20, skipping insertion in model container [2024-12-02 13:07:20,859 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:07:20" (1/1) ... [2024-12-02 13:07:20,921 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 13:07:21,107 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_48005176-22cd-4bae-b031-5aa4b2749d9f/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i[4510,4523] [2024-12-02 13:07:21,112 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_48005176-22cd-4bae-b031-5aa4b2749d9f/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i[4570,4583] [2024-12-02 13:07:21,952 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 13:07:21,952 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 13:07:21,953 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 13:07:21,953 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 13:07:21,954 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 13:07:21,964 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 13:07:21,965 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 13:07:21,966 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 13:07:21,966 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 13:07:21,968 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 13:07:21,969 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 13:07:21,969 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 13:07:21,969 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 13:07:22,592 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 13:07:22,599 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 13:07:22,689 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 13:07:22,690 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 13:07:22,779 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 13:07:22,822 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 13:07:22,835 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_48005176-22cd-4bae-b031-5aa4b2749d9f/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i[4510,4523] [2024-12-02 13:07:22,836 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_48005176-22cd-4bae-b031-5aa4b2749d9f/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i[4570,4583] [2024-12-02 13:07:22,876 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 13:07:22,876 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 13:07:22,876 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 13:07:22,877 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 13:07:22,877 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 13:07:22,883 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 13:07:22,883 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 13:07:22,884 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 13:07:22,885 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 13:07:22,885 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 13:07:22,886 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 13:07:22,886 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 13:07:22,886 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 13:07:22,957 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 13:07:22,961 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 13:07:23,038 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8553] [2024-12-02 13:07:23,039 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 13:07:23,040 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 13:07:23,053 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [9039-9050] [2024-12-02 13:07:23,080 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 13:07:23,255 INFO L204 MainTranslator]: Completed translation [2024-12-02 13:07:23,255 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:23 WrapperNode [2024-12-02 13:07:23,255 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 13:07:23,256 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 13:07:23,256 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 13:07:23,256 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 13:07:23,260 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:23" (1/1) ... [2024-12-02 13:07:23,316 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:23" (1/1) ... [2024-12-02 13:07:23,375 INFO L138 Inliner]: procedures = 684, calls = 3059, calls flagged for inlining = 70, calls inlined = 10, statements flattened = 980 [2024-12-02 13:07:23,375 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 13:07:23,376 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 13:07:23,376 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 13:07:23,376 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 13:07:23,387 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:23" (1/1) ... [2024-12-02 13:07:23,387 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:23" (1/1) ... [2024-12-02 13:07:23,393 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:23" (1/1) ... [2024-12-02 13:07:23,463 INFO L175 MemorySlicer]: Split 591 memory accesses to 7 slices as follows [21, 2, 257, 238, 16, 51, 6]. 43 percent of accesses are in the largest equivalence class. The 37 initializations are split as follows [5, 2, 0, 6, 16, 8, 0]. The 498 writes are split as follows [4, 0, 257, 232, 0, 3, 2]. [2024-12-02 13:07:23,463 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:23" (1/1) ... [2024-12-02 13:07:23,463 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:23" (1/1) ... [2024-12-02 13:07:23,512 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:23" (1/1) ... [2024-12-02 13:07:23,515 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:23" (1/1) ... [2024-12-02 13:07:23,520 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:23" (1/1) ... [2024-12-02 13:07:23,531 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:23" (1/1) ... [2024-12-02 13:07:23,536 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:23" (1/1) ... [2024-12-02 13:07:23,549 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 13:07:23,550 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 13:07:23,550 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 13:07:23,550 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 13:07:23,551 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:23" (1/1) ... [2024-12-02 13:07:23,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:07:23,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48005176-22cd-4bae-b031-5aa4b2749d9f/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:07:23,581 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48005176-22cd-4bae-b031-5aa4b2749d9f/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 13:07:23,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48005176-22cd-4bae-b031-5aa4b2749d9f/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 13:07:23,609 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2024-12-02 13:07:23,609 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2024-12-02 13:07:23,609 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2024-12-02 13:07:23,609 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2024-12-02 13:07:23,609 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_string_is_allocated_bounded_length [2024-12-02 13:07:23,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_string_is_allocated_bounded_length [2024-12-02 13:07:23,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 13:07:23,609 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-12-02 13:07:23,610 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-12-02 13:07:23,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#0 [2024-12-02 13:07:23,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#1 [2024-12-02 13:07:23,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#2 [2024-12-02 13:07:23,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#3 [2024-12-02 13:07:23,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#4 [2024-12-02 13:07:23,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#5 [2024-12-02 13:07:23,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#6 [2024-12-02 13:07:23,610 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#0 [2024-12-02 13:07:23,610 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#1 [2024-12-02 13:07:23,610 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#2 [2024-12-02 13:07:23,610 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#3 [2024-12-02 13:07:23,610 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#4 [2024-12-02 13:07:23,610 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#5 [2024-12-02 13:07:23,610 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#6 [2024-12-02 13:07:23,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-12-02 13:07:23,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-12-02 13:07:23,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-12-02 13:07:23,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-12-02 13:07:23,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-12-02 13:07:23,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-12-02 13:07:23,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2024-12-02 13:07:23,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 13:07:23,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 13:07:23,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-12-02 13:07:23,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-12-02 13:07:23,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-12-02 13:07:23,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-12-02 13:07:23,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-12-02 13:07:23,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#0 [2024-12-02 13:07:23,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#1 [2024-12-02 13:07:23,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#2 [2024-12-02 13:07:23,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#3 [2024-12-02 13:07:23,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#4 [2024-12-02 13:07:23,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#5 [2024-12-02 13:07:23,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#6 [2024-12-02 13:07:23,612 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#0 [2024-12-02 13:07:23,612 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#1 [2024-12-02 13:07:23,612 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#2 [2024-12-02 13:07:23,612 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#3 [2024-12-02 13:07:23,612 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#4 [2024-12-02 13:07:23,612 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#5 [2024-12-02 13:07:23,612 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#6 [2024-12-02 13:07:23,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-12-02 13:07:23,612 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-12-02 13:07:23,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 13:07:23,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 13:07:23,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-12-02 13:07:23,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-12-02 13:07:23,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-12-02 13:07:23,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-12-02 13:07:23,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-12-02 13:07:23,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-12-02 13:07:23,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-12-02 13:07:23,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 13:07:23,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 13:07:23,613 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-12-02 13:07:23,613 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-12-02 13:07:23,613 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2024-12-02 13:07:23,613 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2024-12-02 13:07:23,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#0 [2024-12-02 13:07:23,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#1 [2024-12-02 13:07:23,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#2 [2024-12-02 13:07:23,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#3 [2024-12-02 13:07:23,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#4 [2024-12-02 13:07:23,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#5 [2024-12-02 13:07:23,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#6 [2024-12-02 13:07:23,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-12-02 13:07:23,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-12-02 13:07:23,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-12-02 13:07:23,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-12-02 13:07:23,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-12-02 13:07:23,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-12-02 13:07:23,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2024-12-02 13:07:23,614 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_bytes [2024-12-02 13:07:23,614 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_bytes [2024-12-02 13:07:23,614 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 13:07:23,614 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 13:07:23,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-02 13:07:23,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-12-02 13:07:23,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-12-02 13:07:23,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-12-02 13:07:23,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-12-02 13:07:23,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-12-02 13:07:23,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-12-02 13:07:23,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-12-02 13:07:23,615 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_write [2024-12-02 13:07:23,615 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_write [2024-12-02 13:07:23,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-12-02 13:07:23,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-12-02 13:07:23,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-12-02 13:07:23,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-12-02 13:07:23,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-12-02 13:07:23,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-12-02 13:07:23,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-12-02 13:07:23,615 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-12-02 13:07:23,615 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-12-02 13:07:23,615 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-12-02 13:07:23,615 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-12-02 13:07:23,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 13:07:23,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 13:07:23,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-12-02 13:07:23,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-12-02 13:07:23,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-12-02 13:07:23,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-12-02 13:07:23,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-12-02 13:07:23,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#0 [2024-12-02 13:07:23,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#1 [2024-12-02 13:07:23,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#2 [2024-12-02 13:07:23,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#3 [2024-12-02 13:07:23,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#4 [2024-12-02 13:07:23,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#5 [2024-12-02 13:07:23,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#6 [2024-12-02 13:07:23,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 13:07:23,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 13:07:23,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 13:07:23,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 13:07:23,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-02 13:07:23,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-12-02 13:07:23,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-12-02 13:07:23,920 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 13:07:23,921 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 13:07:31,975 INFO L? ?]: Removed 251 outVars from TransFormulas that were not future-live. [2024-12-02 13:07:31,975 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 13:07:31,986 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 13:07:31,987 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-12-02 13:07:31,987 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:07:31 BoogieIcfgContainer [2024-12-02 13:07:31,987 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 13:07:31,989 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 13:07:31,989 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 13:07:31,993 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 13:07:31,993 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:07:20" (1/3) ... [2024-12-02 13:07:31,994 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10e9d232 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:07:31, skipping insertion in model container [2024-12-02 13:07:31,994 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:07:23" (2/3) ... [2024-12-02 13:07:31,994 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10e9d232 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:07:31, skipping insertion in model container [2024-12-02 13:07:31,994 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:07:31" (3/3) ... [2024-12-02 13:07:31,995 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_from_whole_string_harness.i [2024-12-02 13:07:32,008 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 13:07:32,010 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_byte_buf_write_from_whole_string_harness.i that has 20 procedures, 211 locations, 1 initial locations, 14 loop locations, and 1 error locations. [2024-12-02 13:07:32,051 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 13:07:32,061 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;@c05ec60, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 13:07:32,061 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 13:07:32,064 INFO L276 IsEmpty]: Start isEmpty. Operand has 181 states, 118 states have (on average 1.2627118644067796) internal successors, (149), 119 states have internal predecessors, (149), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-12-02 13:07:32,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-12-02 13:07:32,072 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:07:32,072 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:07:32,073 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:07:32,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:07:32,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1996143641, now seen corresponding path program 1 times [2024-12-02 13:07:32,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:07:32,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057147552] [2024-12-02 13:07:32,082 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:07:32,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:08:55,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:08:56,599 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 13:08:56,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:08:56,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057147552] [2024-12-02 13:08:56,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057147552] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:08:56,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552654579] [2024-12-02 13:08:56,600 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:08:56,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:08:56,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48005176-22cd-4bae-b031-5aa4b2749d9f/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:08:56,602 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48005176-22cd-4bae-b031-5aa4b2749d9f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:08:56,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48005176-22cd-4bae-b031-5aa4b2749d9f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 13:10:23,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:10:23,037 INFO L256 TraceCheckSpWp]: Trace formula consists of 7708 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 13:10:23,046 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:10:23,057 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 13:10:23,058 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:10:23,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552654579] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:10:23,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:10:23,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 13:10:23,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475259279] [2024-12-02 13:10:23,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:10:23,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 13:10:23,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:10:23,076 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 13:10:23,076 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 13:10:23,078 INFO L87 Difference]: Start difference. First operand has 181 states, 118 states have (on average 1.2627118644067796) internal successors, (149), 119 states have internal predecessors, (149), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-12-02 13:10:23,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:10:23,116 INFO L93 Difference]: Finished difference Result 353 states and 507 transitions. [2024-12-02 13:10:23,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 13:10:23,118 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 62 [2024-12-02 13:10:23,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:10:23,126 INFO L225 Difference]: With dead ends: 353 [2024-12-02 13:10:23,127 INFO L226 Difference]: Without dead ends: 176 [2024-12-02 13:10:23,130 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 13:10:23,132 INFO L435 NwaCegarLoop]: 243 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, 243 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:10:23,133 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:10:23,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-12-02 13:10:23,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2024-12-02 13:10:23,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 114 states have (on average 1.2543859649122806) internal successors, (143), 115 states have internal predecessors, (143), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-12-02 13:10:23,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 238 transitions. [2024-12-02 13:10:23,174 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 238 transitions. Word has length 62 [2024-12-02 13:10:23,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:10:23,175 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 238 transitions. [2024-12-02 13:10:23,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-12-02 13:10:23,175 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 238 transitions. [2024-12-02 13:10:23,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-12-02 13:10:23,178 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:10:23,178 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:10:23,201 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48005176-22cd-4bae-b031-5aa4b2749d9f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 13:10:23,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48005176-22cd-4bae-b031-5aa4b2749d9f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:10:23,379 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:10:23,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:10:23,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1690815581, now seen corresponding path program 1 times [2024-12-02 13:10:23,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:10:23,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167489637] [2024-12-02 13:10:23,379 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:10:23,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:11:49,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:11:52,098 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-12-02 13:11:52,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:11:52,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167489637] [2024-12-02 13:11:52,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167489637] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:11:52,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:11:52,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 13:11:52,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523699012] [2024-12-02 13:11:52,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:11:52,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 13:11:52,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:11:52,100 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 13:11:52,100 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:11:52,101 INFO L87 Difference]: Start difference. First operand 176 states and 238 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-12-02 13:11:52,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:11:52,586 INFO L93 Difference]: Finished difference Result 313 states and 431 transitions. [2024-12-02 13:11:52,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:11:52,586 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 62 [2024-12-02 13:11:52,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:11:52,590 INFO L225 Difference]: With dead ends: 313 [2024-12-02 13:11:52,590 INFO L226 Difference]: Without dead ends: 179 [2024-12-02 13:11:52,591 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:11:52,592 INFO L435 NwaCegarLoop]: 224 mSDtfsCounter, 50 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 13:11:52,592 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 805 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 13:11:52,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-12-02 13:11:52,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2024-12-02 13:11:52,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 116 states have (on average 1.25) internal successors, (145), 118 states have internal predecessors, (145), 48 states have call successors, (48), 13 states have call predecessors, (48), 14 states have return successors, (51), 47 states have call predecessors, (51), 47 states have call successors, (51) [2024-12-02 13:11:52,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 244 transitions. [2024-12-02 13:11:52,614 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 244 transitions. Word has length 62 [2024-12-02 13:11:52,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:11:52,615 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 244 transitions. [2024-12-02 13:11:52,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-12-02 13:11:52,615 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 244 transitions. [2024-12-02 13:11:52,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-12-02 13:11:52,618 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:11:52,618 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:11:52,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 13:11:52,618 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:11:52,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:11:52,619 INFO L85 PathProgramCache]: Analyzing trace with hash -960899666, now seen corresponding path program 1 times [2024-12-02 13:11:52,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:11:52,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323753161] [2024-12-02 13:11:52,619 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:11:52,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:13:19,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:13:24,863 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-12-02 13:13:24,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:13:24,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323753161] [2024-12-02 13:13:24,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323753161] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:13:24,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:13:24,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 13:13:24,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800712848] [2024-12-02 13:13:24,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:13:24,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 13:13:24,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:13:24,865 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 13:13:24,865 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 13:13:24,865 INFO L87 Difference]: Start difference. First operand 179 states and 244 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 4 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-12-02 13:13:25,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:13:25,745 INFO L93 Difference]: Finished difference Result 185 states and 249 transitions. [2024-12-02 13:13:25,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 13:13:25,745 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 4 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 68 [2024-12-02 13:13:25,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:13:25,748 INFO L225 Difference]: With dead ends: 185 [2024-12-02 13:13:25,748 INFO L226 Difference]: Without dead ends: 183 [2024-12-02 13:13:25,748 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-12-02 13:13:25,749 INFO L435 NwaCegarLoop]: 222 mSDtfsCounter, 85 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 13:13:25,749 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 1026 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 13:13:25,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-12-02 13:13:25,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2024-12-02 13:13:25,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 119 states have (on average 1.2436974789915967) internal successors, (148), 121 states have internal predecessors, (148), 48 states have call successors, (48), 14 states have call predecessors, (48), 15 states have return successors, (51), 47 states have call predecessors, (51), 47 states have call successors, (51) [2024-12-02 13:13:25,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 247 transitions. [2024-12-02 13:13:25,766 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 247 transitions. Word has length 68 [2024-12-02 13:13:25,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:13:25,766 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 247 transitions. [2024-12-02 13:13:25,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 4 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-12-02 13:13:25,766 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 247 transitions. [2024-12-02 13:13:25,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-12-02 13:13:25,768 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:13:25,768 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:13:25,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 13:13:25,769 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:13:25,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:13:25,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1735774001, now seen corresponding path program 1 times [2024-12-02 13:13:25,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:13:25,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878778925] [2024-12-02 13:13:25,769 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:13:25,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:14:56,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:15:04,330 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-12-02 13:15:04,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:15:04,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878778925] [2024-12-02 13:15:04,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878778925] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:15:04,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:15:04,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 13:15:04,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336894555] [2024-12-02 13:15:04,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:15:04,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 13:15:04,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:15:04,332 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 13:15:04,332 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 13:15:04,332 INFO L87 Difference]: Start difference. First operand 183 states and 247 transitions. Second operand has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-12-02 13:15:05,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:15:05,946 INFO L93 Difference]: Finished difference Result 214 states and 292 transitions. [2024-12-02 13:15:05,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 13:15:05,947 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 74 [2024-12-02 13:15:05,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:15:05,949 INFO L225 Difference]: With dead ends: 214 [2024-12-02 13:15:05,949 INFO L226 Difference]: Without dead ends: 212 [2024-12-02 13:15:05,950 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-12-02 13:15:05,950 INFO L435 NwaCegarLoop]: 229 mSDtfsCounter, 25 mSDsluCounter, 1021 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 1250 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-12-02 13:15:05,951 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 1250 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-12-02 13:15:05,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2024-12-02 13:15:05,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 193. [2024-12-02 13:15:05,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 126 states have (on average 1.246031746031746) internal successors, (157), 129 states have internal predecessors, (157), 50 states have call successors, (50), 15 states have call predecessors, (50), 16 states have return successors, (53), 48 states have call predecessors, (53), 49 states have call successors, (53) [2024-12-02 13:15:05,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 260 transitions. [2024-12-02 13:15:05,971 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 260 transitions. Word has length 74 [2024-12-02 13:15:05,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:15:05,972 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 260 transitions. [2024-12-02 13:15:05,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-12-02 13:15:05,972 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 260 transitions. [2024-12-02 13:15:05,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-12-02 13:15:05,974 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:15:05,974 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:15:05,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 13:15:05,974 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:15:05,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:15:05,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1938056932, now seen corresponding path program 1 times [2024-12-02 13:15:05,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:15:05,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113886046] [2024-12-02 13:15:05,975 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:15:05,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:16:35,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:16:37,102 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-12-02 13:16:37,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:16:37,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113886046] [2024-12-02 13:16:37,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113886046] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:16:37,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:16:37,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 13:16:37,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693398080] [2024-12-02 13:16:37,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:16:37,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 13:16:37,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:16:37,103 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 13:16:37,103 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 13:16:37,104 INFO L87 Difference]: Start difference. First operand 193 states and 260 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-12-02 13:16:37,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:16:37,229 INFO L93 Difference]: Finished difference Result 294 states and 399 transitions. [2024-12-02 13:16:37,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 13:16:37,229 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 75 [2024-12-02 13:16:37,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:16:37,232 INFO L225 Difference]: With dead ends: 294 [2024-12-02 13:16:37,232 INFO L226 Difference]: Without dead ends: 229 [2024-12-02 13:16:37,233 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 13:16:37,233 INFO L435 NwaCegarLoop]: 235 mSDtfsCounter, 12 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 13:16:37,234 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 696 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 13:16:37,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2024-12-02 13:16:37,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2024-12-02 13:16:37,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 150 states have (on average 1.24) internal successors, (186), 153 states have internal predecessors, (186), 62 states have call successors, (62), 15 states have call predecessors, (62), 16 states have return successors, (66), 60 states have call predecessors, (66), 61 states have call successors, (66) [2024-12-02 13:16:37,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 314 transitions. [2024-12-02 13:16:37,250 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 314 transitions. Word has length 75 [2024-12-02 13:16:37,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:16:37,250 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 314 transitions. [2024-12-02 13:16:37,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-12-02 13:16:37,250 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 314 transitions. [2024-12-02 13:16:37,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-12-02 13:16:37,251 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:16:37,251 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2024-12-02 13:16:37,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 13:16:37,252 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:16:37,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:16:37,252 INFO L85 PathProgramCache]: Analyzing trace with hash 2057222190, now seen corresponding path program 1 times [2024-12-02 13:16:37,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:16:37,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240601762] [2024-12-02 13:16:37,252 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:16:37,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:18:07,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:18:13,763 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-12-02 13:18:13,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:18:13,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240601762] [2024-12-02 13:18:13,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240601762] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:18:13,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:18:13,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 13:18:13,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657913700] [2024-12-02 13:18:13,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:18:13,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 13:18:13,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:18:13,764 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 13:18:13,764 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-12-02 13:18:13,764 INFO L87 Difference]: Start difference. First operand 229 states and 314 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 4 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-12-02 13:18:16,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:18:16,882 INFO L93 Difference]: Finished difference Result 450 states and 639 transitions. [2024-12-02 13:18:16,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 13:18:16,882 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 4 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 80 [2024-12-02 13:18:16,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:18:16,885 INFO L225 Difference]: With dead ends: 450 [2024-12-02 13:18:16,885 INFO L226 Difference]: Without dead ends: 273 [2024-12-02 13:18:16,885 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-12-02 13:18:16,886 INFO L435 NwaCegarLoop]: 213 mSDtfsCounter, 68 mSDsluCounter, 1239 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 1452 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-12-02 13:18:16,886 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 1452 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-12-02 13:18:16,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2024-12-02 13:18:16,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 266. [2024-12-02 13:18:16,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 172 states have (on average 1.2383720930232558) internal successors, (213), 176 states have internal predecessors, (213), 76 states have call successors, (76), 15 states have call predecessors, (76), 17 states have return successors, (86), 74 states have call predecessors, (86), 75 states have call successors, (86) [2024-12-02 13:18:16,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 375 transitions. [2024-12-02 13:18:16,906 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 375 transitions. Word has length 80 [2024-12-02 13:18:16,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:18:16,906 INFO L471 AbstractCegarLoop]: Abstraction has 266 states and 375 transitions. [2024-12-02 13:18:16,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 4 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-12-02 13:18:16,907 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 375 transitions. [2024-12-02 13:18:16,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-12-02 13:18:16,908 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:18:16,908 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:18:16,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 13:18:16,908 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:18:16,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:18:16,908 INFO L85 PathProgramCache]: Analyzing trace with hash -759716362, now seen corresponding path program 1 times [2024-12-02 13:18:16,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:18:16,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713579904] [2024-12-02 13:18:16,909 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:18:16,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:19:41,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:19:45,870 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-02 13:19:45,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:19:45,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713579904] [2024-12-02 13:19:45,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713579904] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:19:45,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485014252] [2024-12-02 13:19:45,871 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:19:45,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:19:45,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48005176-22cd-4bae-b031-5aa4b2749d9f/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:19:45,873 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48005176-22cd-4bae-b031-5aa4b2749d9f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:19:45,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48005176-22cd-4bae-b031-5aa4b2749d9f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 13:21:11,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:21:11,093 INFO L256 TraceCheckSpWp]: Trace formula consists of 7763 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-12-02 13:21:11,099 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:21:11,452 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-12-02 13:21:11,453 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:21:11,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485014252] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:21:11,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:21:11,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 11 [2024-12-02 13:21:11,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423857692] [2024-12-02 13:21:11,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:21:11,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 13:21:11,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:21:11,454 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 13:21:11,454 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:21:11,454 INFO L87 Difference]: Start difference. First operand 266 states and 375 transitions. Second operand has 9 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-02 13:21:12,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:21:12,382 INFO L93 Difference]: Finished difference Result 485 states and 695 transitions. [2024-12-02 13:21:12,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 13:21:12,382 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 84 [2024-12-02 13:21:12,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:21:12,384 INFO L225 Difference]: With dead ends: 485 [2024-12-02 13:21:12,384 INFO L226 Difference]: Without dead ends: 271 [2024-12-02 13:21:12,385 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:21:12,386 INFO L435 NwaCegarLoop]: 225 mSDtfsCounter, 0 mSDsluCounter, 1538 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1763 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 13:21:12,386 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1763 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 13:21:12,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2024-12-02 13:21:12,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2024-12-02 13:21:12,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 176 states have (on average 1.2329545454545454) internal successors, (217), 181 states have internal predecessors, (217), 76 states have call successors, (76), 15 states have call predecessors, (76), 18 states have return successors, (93), 74 states have call predecessors, (93), 75 states have call successors, (93) [2024-12-02 13:21:12,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 386 transitions. [2024-12-02 13:21:12,405 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 386 transitions. Word has length 84 [2024-12-02 13:21:12,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:21:12,405 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 386 transitions. [2024-12-02 13:21:12,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-02 13:21:12,406 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 386 transitions. [2024-12-02 13:21:12,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-12-02 13:21:12,407 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:21:12,407 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2024-12-02 13:21:12,432 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48005176-22cd-4bae-b031-5aa4b2749d9f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 13:21:12,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48005176-22cd-4bae-b031-5aa4b2749d9f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:21:12,607 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:21:12,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:21:12,608 INFO L85 PathProgramCache]: Analyzing trace with hash -2011401861, now seen corresponding path program 1 times [2024-12-02 13:21:12,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:21:12,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477394851] [2024-12-02 13:21:12,608 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:21:12,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms