./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0ebff7-2734-48a2-9165-fabcf7f3fff2/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0ebff7-2734-48a2-9165-fabcf7f3fff2/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0ebff7-2734-48a2-9165-fabcf7f3fff2/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0ebff7-2734-48a2-9165-fabcf7f3fff2/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0ebff7-2734-48a2-9165-fabcf7f3fff2/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0ebff7-2734-48a2-9165-fabcf7f3fff2/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash bb0c309b27b585749f4baad3e5a2aa617acc042d97a0a5f067f810d997d3b9d7 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:37:49,320 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:37:49,425 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0ebff7-2734-48a2-9165-fabcf7f3fff2/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-28 02:37:49,432 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:37:49,432 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:37:49,462 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:37:49,463 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:37:49,463 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:37:49,464 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:37:49,464 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:37:49,464 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:37:49,464 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:37:49,464 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:37:49,465 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:37:49,465 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:37:49,465 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:37:49,465 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:37:49,465 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:37:49,465 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:37:49,466 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:37:49,466 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:37:49,466 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:37:49,466 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:37:49,466 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:37:49,466 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:37:49,466 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:37:49,467 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:37:49,467 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:37:49,467 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:37:49,467 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:37:49,467 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:37:49,467 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:37:49,467 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:37:49,468 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:37:49,468 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:37:49,468 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:37:49,468 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:37:49,468 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:37:49,468 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:37:49,468 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:37:49,469 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:37:49,469 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:37:49,469 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:37:49,469 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:37:49,469 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:37:49,469 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_ec0ebff7-2734-48a2-9165-fabcf7f3fff2/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb0c309b27b585749f4baad3e5a2aa617acc042d97a0a5f067f810d997d3b9d7 [2024-11-28 02:37:49,890 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:37:49,908 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:37:49,911 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:37:49,913 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:37:49,913 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:37:49,915 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0ebff7-2734-48a2-9165-fabcf7f3fff2/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness_negated.i [2024-11-28 02:37:53,218 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0ebff7-2734-48a2-9165-fabcf7f3fff2/bin/uautomizer-verify-aQ6SnzHsRB/data/f1a03120b/bb0d74ba82aa47778b03ee1437b3852c/FLAGd3f12f9ff [2024-11-28 02:37:53,885 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:37:53,886 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0ebff7-2734-48a2-9165-fabcf7f3fff2/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness_negated.i [2024-11-28 02:37:53,952 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0ebff7-2734-48a2-9165-fabcf7f3fff2/bin/uautomizer-verify-aQ6SnzHsRB/data/f1a03120b/bb0d74ba82aa47778b03ee1437b3852c/FLAGd3f12f9ff [2024-11-28 02:37:53,978 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0ebff7-2734-48a2-9165-fabcf7f3fff2/bin/uautomizer-verify-aQ6SnzHsRB/data/f1a03120b/bb0d74ba82aa47778b03ee1437b3852c [2024-11-28 02:37:53,980 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:37:53,981 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:37:53,983 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:37:53,983 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:37:53,988 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:37:53,989 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:37:53" (1/1) ... [2024-11-28 02:37:53,991 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61f131bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:53, skipping insertion in model container [2024-11-28 02:37:53,991 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:37:53" (1/1) ... [2024-11-28 02:37:54,104 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:37:54,472 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_ec0ebff7-2734-48a2-9165-fabcf7f3fff2/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness_negated.i[4502,4515] [2024-11-28 02:37:54,483 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_ec0ebff7-2734-48a2-9165-fabcf7f3fff2/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness_negated.i[4562,4575] [2024-11-28 02:37:55,758 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:37:55,759 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:37:55,760 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:37:55,761 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:37:55,763 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:37:55,784 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:37:55,785 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:37:55,788 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:37:55,788 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:37:56,887 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:37:56,887 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:37:57,001 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:37:57,071 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:37:57,094 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_ec0ebff7-2734-48a2-9165-fabcf7f3fff2/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness_negated.i[4502,4515] [2024-11-28 02:37:57,097 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_ec0ebff7-2734-48a2-9165-fabcf7f3fff2/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness_negated.i[4562,4575] [2024-11-28 02:37:57,183 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:37:57,185 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:37:57,185 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:37:57,186 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:37:57,189 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:37:57,201 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:37:57,202 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:37:57,203 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:37:57,207 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:37:57,417 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8061] [2024-11-28 02:37:57,419 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:37:57,420 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:37:57,444 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8547-8558] [2024-11-28 02:37:57,472 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:37:57,803 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:37:57,803 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:57 WrapperNode [2024-11-28 02:37:57,804 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:37:57,805 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:37:57,805 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:37:57,805 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:37:57,814 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:57" (1/1) ... [2024-11-28 02:37:57,952 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:57" (1/1) ... [2024-11-28 02:37:58,065 INFO L138 Inliner]: procedures = 680, calls = 2502, calls flagged for inlining = 56, calls inlined = 8, statements flattened = 823 [2024-11-28 02:37:58,066 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:37:58,067 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:37:58,067 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:37:58,067 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:37:58,082 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:57" (1/1) ... [2024-11-28 02:37:58,082 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:57" (1/1) ... [2024-11-28 02:37:58,098 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:57" (1/1) ... [2024-11-28 02:37:58,181 INFO L175 MemorySlicer]: Split 536 memory accesses to 5 slices as follows [2, 257, 238, 32, 7]. 48 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 0, 6, 4, 5]. The 497 writes are split as follows [0, 257, 232, 7, 1]. [2024-11-28 02:37:58,181 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:57" (1/1) ... [2024-11-28 02:37:58,182 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:57" (1/1) ... [2024-11-28 02:37:58,228 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:57" (1/1) ... [2024-11-28 02:37:58,231 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:57" (1/1) ... [2024-11-28 02:37:58,240 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:57" (1/1) ... [2024-11-28 02:37:58,261 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:57" (1/1) ... [2024-11-28 02:37:58,268 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:57" (1/1) ... [2024-11-28 02:37:58,292 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:37:58,293 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:37:58,293 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:37:58,293 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:37:58,296 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:57" (1/1) ... [2024-11-28 02:37:58,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:37:58,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0ebff7-2734-48a2-9165-fabcf7f3fff2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:37:58,344 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0ebff7-2734-48a2-9165-fabcf7f3fff2/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:37:58,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0ebff7-2734-48a2-9165-fabcf7f3fff2/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:37:58,390 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2024-11-28 02:37:58,392 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2024-11-28 02:37:58,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 02:37:58,393 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-28 02:37:58,393 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-28 02:37:58,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-28 02:37:58,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-28 02:37:58,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-28 02:37:58,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-28 02:37:58,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-28 02:37:58,395 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 02:37:58,395 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 02:37:58,395 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 02:37:58,395 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 02:37:58,395 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-28 02:37:58,395 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 02:37:58,395 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 02:37:58,396 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_secure_zero [2024-11-28 02:37:58,396 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_secure_zero [2024-11-28 02:37:58,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 02:37:58,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:37:58,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 02:37:58,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 02:37:58,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-28 02:37:58,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-28 02:37:58,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-28 02:37:58,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:37:58,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:37:58,398 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-28 02:37:58,398 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-28 02:37:58,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-28 02:37:58,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-28 02:37:58,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-28 02:37:58,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-28 02:37:58,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-28 02:37:58,399 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2024-11-28 02:37:58,399 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2024-11-28 02:37:58,399 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 02:37:58,399 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 02:37:58,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 02:37:58,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 02:37:58,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 02:37:58,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-28 02:37:58,401 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-28 02:37:58,401 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-28 02:37:58,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-28 02:37:58,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-28 02:37:58,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-28 02:37:58,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-28 02:37:58,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-28 02:37:58,402 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-11-28 02:37:58,403 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-11-28 02:37:58,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 02:37:58,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 02:37:58,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 02:37:58,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 02:37:58,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-28 02:37:58,403 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2024-11-28 02:37:58,404 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2024-11-28 02:37:58,404 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2024-11-28 02:37:58,406 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2024-11-28 02:37:58,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:37:58,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 02:37:58,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 02:37:58,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 02:37:58,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-28 02:37:58,857 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:37:58,860 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:38:08,792 INFO L? ?]: Removed 72 outVars from TransFormulas that were not future-live. [2024-11-28 02:38:08,792 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:38:08,811 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:38:08,811 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-28 02:38:08,811 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:38:08 BoogieIcfgContainer [2024-11-28 02:38:08,812 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:38:08,814 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:38:08,814 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:38:08,819 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:38:08,819 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:37:53" (1/3) ... [2024-11-28 02:38:08,820 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4185dd38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:38:08, skipping insertion in model container [2024-11-28 02:38:08,820 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:57" (2/3) ... [2024-11-28 02:38:08,820 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4185dd38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:38:08, skipping insertion in model container [2024-11-28 02:38:08,821 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:38:08" (3/3) ... [2024-11-28 02:38:08,822 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_clean_up_secure_harness_negated.i [2024-11-28 02:38:08,838 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:38:08,840 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_byte_buf_clean_up_secure_harness_negated.i that has 11 procedures, 120 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 02:38:08,915 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:38:08,930 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;@1ad8fca7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:38:08,931 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:38:08,935 INFO L276 IsEmpty]: Start isEmpty. Operand has 120 states, 80 states have (on average 1.225) internal successors, (98), 81 states have internal predecessors, (98), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-28 02:38:08,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-28 02:38:08,946 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:38:08,947 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:38:08,947 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:38:08,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:38:08,954 INFO L85 PathProgramCache]: Analyzing trace with hash -2095082959, now seen corresponding path program 1 times [2024-11-28 02:38:08,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:38:08,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331722262] [2024-11-28 02:38:08,962 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:38:08,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:39:53,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:39:57,761 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-28 02:39:57,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:39:57,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331722262] [2024-11-28 02:39:57,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331722262] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:39:57,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83968623] [2024-11-28 02:39:57,764 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:39:57,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:39:57,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0ebff7-2734-48a2-9165-fabcf7f3fff2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:39:57,767 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0ebff7-2734-48a2-9165-fabcf7f3fff2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:39:57,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0ebff7-2734-48a2-9165-fabcf7f3fff2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:41:51,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:41:51,110 INFO L256 TraceCheckSpWp]: Trace formula consists of 7600 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 02:41:51,129 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:41:51,865 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-28 02:41:51,865 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:41:51,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83968623] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:41:51,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:41:51,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2024-11-28 02:41:51,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207291133] [2024-11-28 02:41:51,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:41:51,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:41:51,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:41:51,905 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:41:51,907 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:41:51,911 INFO L87 Difference]: Start difference. First operand has 120 states, 80 states have (on average 1.225) internal successors, (98), 81 states have internal predecessors, (98), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-28 02:41:53,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:41:53,233 INFO L93 Difference]: Finished difference Result 239 states and 331 transitions. [2024-11-28 02:41:53,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:41:53,237 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 77 [2024-11-28 02:41:53,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:41:53,247 INFO L225 Difference]: With dead ends: 239 [2024-11-28 02:41:53,247 INFO L226 Difference]: Without dead ends: 118 [2024-11-28 02:41:53,252 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:41:53,256 INFO L435 NwaCegarLoop]: 120 mSDtfsCounter, 152 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:41:53,257 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 332 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 02:41:53,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-28 02:41:53,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2024-11-28 02:41:53,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 78 states have (on average 1.1923076923076923) internal successors, (93), 80 states have internal predecessors, (93), 28 states have call successors, (28), 10 states have call predecessors, (28), 11 states have return successors, (32), 27 states have call predecessors, (32), 27 states have call successors, (32) [2024-11-28 02:41:53,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 153 transitions. [2024-11-28 02:41:53,326 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 153 transitions. Word has length 77 [2024-11-28 02:41:53,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:41:53,326 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 153 transitions. [2024-11-28 02:41:53,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-28 02:41:53,327 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 153 transitions. [2024-11-28 02:41:53,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-28 02:41:53,335 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:41:53,336 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:41:53,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0ebff7-2734-48a2-9165-fabcf7f3fff2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 02:41:53,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0ebff7-2734-48a2-9165-fabcf7f3fff2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:41:53,539 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:41:53,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:41:53,541 INFO L85 PathProgramCache]: Analyzing trace with hash 16386302, now seen corresponding path program 1 times [2024-11-28 02:41:53,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:41:53,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65572643] [2024-11-28 02:41:53,541 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:41:53,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:43:28,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:43:29,641 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-28 02:43:29,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:43:29,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65572643] [2024-11-28 02:43:29,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65572643] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:43:29,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619791784] [2024-11-28 02:43:29,642 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:43:29,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:43:29,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0ebff7-2734-48a2-9165-fabcf7f3fff2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:43:29,645 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0ebff7-2734-48a2-9165-fabcf7f3fff2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:43:29,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0ebff7-2734-48a2-9165-fabcf7f3fff2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:45:02,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:45:02,886 INFO L256 TraceCheckSpWp]: Trace formula consists of 7614 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:45:02,895 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:45:02,940 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-28 02:45:02,940 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:45:02,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619791784] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:45:02,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:45:02,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-28 02:45:02,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973687920] [2024-11-28 02:45:02,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:45:02,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:45:02,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:45:02,947 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:45:02,947 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:45:02,950 INFO L87 Difference]: Start difference. First operand 118 states and 153 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 02:45:03,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:45:03,096 INFO L93 Difference]: Finished difference Result 214 states and 288 transitions. [2024-11-28 02:45:03,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:45:03,097 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 83 [2024-11-28 02:45:03,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:45:03,100 INFO L225 Difference]: With dead ends: 214 [2024-11-28 02:45:03,103 INFO L226 Difference]: Without dead ends: 121 [2024-11-28 02:45:03,104 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:45:03,107 INFO L435 NwaCegarLoop]: 143 mSDtfsCounter, 1 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:45:03,108 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 423 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:45:03,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-11-28 02:45:03,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 120. [2024-11-28 02:45:03,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 80 states have (on average 1.1875) internal successors, (95), 82 states have internal predecessors, (95), 28 states have call successors, (28), 10 states have call predecessors, (28), 11 states have return successors, (32), 27 states have call predecessors, (32), 27 states have call successors, (32) [2024-11-28 02:45:03,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 155 transitions. [2024-11-28 02:45:03,131 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 155 transitions. Word has length 83 [2024-11-28 02:45:03,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:45:03,131 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 155 transitions. [2024-11-28 02:45:03,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 02:45:03,132 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 155 transitions. [2024-11-28 02:45:03,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-28 02:45:03,135 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:45:03,135 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:45:03,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0ebff7-2734-48a2-9165-fabcf7f3fff2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 02:45:03,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0ebff7-2734-48a2-9165-fabcf7f3fff2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:45:03,336 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:45:03,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:45:03,337 INFO L85 PathProgramCache]: Analyzing trace with hash -2012199808, now seen corresponding path program 1 times [2024-11-28 02:45:03,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:45:03,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828265542] [2024-11-28 02:45:03,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:45:03,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:46:33,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:46:35,581 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-28 02:46:35,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:46:35,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828265542] [2024-11-28 02:46:35,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828265542] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:46:35,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703876754] [2024-11-28 02:46:35,581 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:46:35,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:46:35,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0ebff7-2734-48a2-9165-fabcf7f3fff2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:46:35,588 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0ebff7-2734-48a2-9165-fabcf7f3fff2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:46:35,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0ebff7-2734-48a2-9165-fabcf7f3fff2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:48:06,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:06,394 INFO L256 TraceCheckSpWp]: Trace formula consists of 7609 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:48:06,401 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:48:06,437 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-28 02:48:06,437 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:48:06,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703876754] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:06,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:48:06,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-28 02:48:06,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336503399] [2024-11-28 02:48:06,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:06,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:48:06,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:06,439 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:48:06,440 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:48:06,440 INFO L87 Difference]: Start difference. First operand 120 states and 155 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 02:48:06,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:48:06,545 INFO L93 Difference]: Finished difference Result 217 states and 291 transitions. [2024-11-28 02:48:06,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:48:06,545 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 83 [2024-11-28 02:48:06,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:48:06,547 INFO L225 Difference]: With dead ends: 217 [2024-11-28 02:48:06,548 INFO L226 Difference]: Without dead ends: 122 [2024-11-28 02:48:06,549 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:48:06,550 INFO L435 NwaCegarLoop]: 144 mSDtfsCounter, 0 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:48:06,550 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 424 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:48:06,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-28 02:48:06,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2024-11-28 02:48:06,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 82 states have (on average 1.1829268292682926) internal successors, (97), 84 states have internal predecessors, (97), 28 states have call successors, (28), 10 states have call predecessors, (28), 11 states have return successors, (32), 27 states have call predecessors, (32), 27 states have call successors, (32) [2024-11-28 02:48:06,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 157 transitions. [2024-11-28 02:48:06,566 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 157 transitions. Word has length 83 [2024-11-28 02:48:06,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:48:06,567 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 157 transitions. [2024-11-28 02:48:06,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 02:48:06,567 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 157 transitions. [2024-11-28 02:48:06,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-28 02:48:06,569 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:48:06,570 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:48:06,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0ebff7-2734-48a2-9165-fabcf7f3fff2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 02:48:06,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0ebff7-2734-48a2-9165-fabcf7f3fff2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:48:06,770 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:48:06,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:06,771 INFO L85 PathProgramCache]: Analyzing trace with hash -427514372, now seen corresponding path program 1 times [2024-11-28 02:48:06,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:06,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231224100] [2024-11-28 02:48:06,771 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:06,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:49:38,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:49:41,628 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-28 02:49:41,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:49:41,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231224100] [2024-11-28 02:49:41,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231224100] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:49:41,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602737572] [2024-11-28 02:49:41,629 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:49:41,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:49:41,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0ebff7-2734-48a2-9165-fabcf7f3fff2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:49:41,635 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0ebff7-2734-48a2-9165-fabcf7f3fff2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:49:41,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0ebff7-2734-48a2-9165-fabcf7f3fff2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:51:19,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:51:19,333 INFO L256 TraceCheckSpWp]: Trace formula consists of 7617 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 02:51:19,339 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:51:20,057 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 02:51:20,057 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:51:20,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602737572] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:51:20,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:51:20,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2024-11-28 02:51:20,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213450658] [2024-11-28 02:51:20,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:51:20,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:51:20,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:51:20,059 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:51:20,059 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:51:20,060 INFO L87 Difference]: Start difference. First operand 122 states and 157 transitions. Second operand has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-28 02:51:21,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:51:21,411 INFO L93 Difference]: Finished difference Result 216 states and 279 transitions. [2024-11-28 02:51:21,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:51:21,412 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 83 [2024-11-28 02:51:21,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:51:21,414 INFO L225 Difference]: With dead ends: 216 [2024-11-28 02:51:21,414 INFO L226 Difference]: Without dead ends: 122 [2024-11-28 02:51:21,415 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:51:21,416 INFO L435 NwaCegarLoop]: 116 mSDtfsCounter, 158 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:51:21,416 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 537 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 02:51:21,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-28 02:51:21,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2024-11-28 02:51:21,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 82 states have (on average 1.1829268292682926) internal successors, (97), 84 states have internal predecessors, (97), 28 states have call successors, (28), 10 states have call predecessors, (28), 11 states have return successors, (30), 27 states have call predecessors, (30), 27 states have call successors, (30) [2024-11-28 02:51:21,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 155 transitions. [2024-11-28 02:51:21,432 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 155 transitions. Word has length 83 [2024-11-28 02:51:21,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:51:21,432 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 155 transitions. [2024-11-28 02:51:21,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-28 02:51:21,433 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 155 transitions. [2024-11-28 02:51:21,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-28 02:51:21,434 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:51:21,435 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:51:21,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0ebff7-2734-48a2-9165-fabcf7f3fff2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 02:51:21,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec0ebff7-2734-48a2-9165-fabcf7f3fff2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:51:21,635 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:51:21,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:51:21,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1964885625, now seen corresponding path program 2 times [2024-11-28 02:51:21,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:51:21,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933052212] [2024-11-28 02:51:21,636 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:51:21,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:52:53,127 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 02:52:53,127 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat