./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_9bb938c5-66e8-4cd0-8519-6b63df75c49d/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb938c5-66e8-4cd0-8519-6b63df75c49d/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_9bb938c5-66e8-4cd0-8519-6b63df75c49d/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb938c5-66e8-4cd0-8519-6b63df75c49d/bin/uautomizer-verify-84ZbGMXZE1/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_9bb938c5-66e8-4cd0-8519-6b63df75c49d/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_9bb938c5-66e8-4cd0-8519-6b63df75c49d/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 bb0c309b27b585749f4baad3e5a2aa617acc042d97a0a5f067f810d997d3b9d7 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 11:02:20,572 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 11:02:20,624 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb938c5-66e8-4cd0-8519-6b63df75c49d/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-12-02 11:02:20,628 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 11:02:20,628 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 11:02:20,648 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 11:02:20,649 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 11:02:20,649 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 11:02:20,649 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 11:02:20,649 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 11:02:20,649 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 11:02:20,650 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 11:02:20,650 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 11:02:20,650 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 11:02:20,650 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 11:02:20,650 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 11:02:20,650 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 11:02:20,650 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 11:02:20,650 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 11:02:20,651 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 11:02:20,651 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 11:02:20,651 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 11:02:20,651 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 11:02:20,651 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 11:02:20,651 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 11:02:20,651 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 11:02:20,651 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 11:02:20,651 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 11:02:20,651 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 11:02:20,651 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:02:20,652 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 11:02:20,652 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 11:02:20,652 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 11:02:20,652 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 11:02:20,652 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:02:20,652 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 11:02:20,652 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 11:02:20,652 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 11:02:20,652 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 11:02:20,652 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 11:02:20,652 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 11:02:20,652 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 11:02:20,653 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 11:02:20,653 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 11:02:20,653 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 11:02:20,653 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_9bb938c5-66e8-4cd0-8519-6b63df75c49d/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 -> bb0c309b27b585749f4baad3e5a2aa617acc042d97a0a5f067f810d997d3b9d7 [2024-12-02 11:02:20,845 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 11:02:20,852 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 11:02:20,854 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 11:02:20,855 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 11:02:20,855 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 11:02:20,856 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb938c5-66e8-4cd0-8519-6b63df75c49d/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness_negated.i [2024-12-02 11:02:23,426 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb938c5-66e8-4cd0-8519-6b63df75c49d/bin/uautomizer-verify-84ZbGMXZE1/data/4a40abaa9/d8ed0ec5bd8940afa84960a2cc672845/FLAG3f0e4ca83 [2024-12-02 11:02:23,843 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 11:02:23,844 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb938c5-66e8-4cd0-8519-6b63df75c49d/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness_negated.i [2024-12-02 11:02:23,875 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb938c5-66e8-4cd0-8519-6b63df75c49d/bin/uautomizer-verify-84ZbGMXZE1/data/4a40abaa9/d8ed0ec5bd8940afa84960a2cc672845/FLAG3f0e4ca83 [2024-12-02 11:02:24,007 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb938c5-66e8-4cd0-8519-6b63df75c49d/bin/uautomizer-verify-84ZbGMXZE1/data/4a40abaa9/d8ed0ec5bd8940afa84960a2cc672845 [2024-12-02 11:02:24,009 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 11:02:24,010 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 11:02:24,011 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 11:02:24,011 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 11:02:24,014 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 11:02:24,015 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:02:24" (1/1) ... [2024-12-02 11:02:24,015 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@776430c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:02:24, skipping insertion in model container [2024-12-02 11:02:24,015 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:02:24" (1/1) ... [2024-12-02 11:02:24,076 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 11:02:24,252 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_9bb938c5-66e8-4cd0-8519-6b63df75c49d/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness_negated.i[4502,4515] [2024-12-02 11:02:24,257 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_9bb938c5-66e8-4cd0-8519-6b63df75c49d/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness_negated.i[4562,4575] [2024-12-02 11:02:24,912 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:02:24,913 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:02:24,913 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:02:24,914 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:02:24,915 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:02:24,928 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:02:24,928 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:02:24,930 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:02:24,931 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:02:25,509 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:02:25,509 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:02:25,563 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 11:02:25,605 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 11:02:25,619 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_9bb938c5-66e8-4cd0-8519-6b63df75c49d/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness_negated.i[4502,4515] [2024-12-02 11:02:25,619 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_9bb938c5-66e8-4cd0-8519-6b63df75c49d/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness_negated.i[4562,4575] [2024-12-02 11:02:25,660 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:02:25,660 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:02:25,660 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:02:25,661 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:02:25,661 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:02:25,667 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:02:25,668 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:02:25,668 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:02:25,669 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:02:25,763 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8061] [2024-12-02 11:02:25,765 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:02:25,765 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:02:25,780 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8547-8558] [2024-12-02 11:02:25,822 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 11:02:25,992 INFO L204 MainTranslator]: Completed translation [2024-12-02 11:02:25,992 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:02:25 WrapperNode [2024-12-02 11:02:25,993 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 11:02:25,993 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 11:02:25,993 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 11:02:25,993 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 11:02:25,998 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:02:25" (1/1) ... [2024-12-02 11:02:26,054 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:02:25" (1/1) ... [2024-12-02 11:02:26,111 INFO L138 Inliner]: procedures = 680, calls = 2502, calls flagged for inlining = 56, calls inlined = 8, statements flattened = 823 [2024-12-02 11:02:26,112 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 11:02:26,112 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 11:02:26,112 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 11:02:26,113 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 11:02:26,123 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:02:25" (1/1) ... [2024-12-02 11:02:26,124 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:02:25" (1/1) ... [2024-12-02 11:02:26,130 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:02:25" (1/1) ... [2024-12-02 11:02:26,184 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]. [2024-12-02 11:02:26,185 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:02:25" (1/1) ... [2024-12-02 11:02:26,185 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:02:25" (1/1) ... [2024-12-02 11:02:26,216 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:02:25" (1/1) ... [2024-12-02 11:02:26,218 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:02:25" (1/1) ... [2024-12-02 11:02:26,222 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:02:25" (1/1) ... [2024-12-02 11:02:26,229 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:02:25" (1/1) ... [2024-12-02 11:02:26,233 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:02:25" (1/1) ... [2024-12-02 11:02:26,243 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 11:02:26,244 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 11:02:26,244 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 11:02:26,244 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 11:02:26,245 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:02:25" (1/1) ... [2024-12-02 11:02:26,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:02:26,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb938c5-66e8-4cd0-8519-6b63df75c49d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:02:26,276 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb938c5-66e8-4cd0-8519-6b63df75c49d/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 11:02:26,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb938c5-66e8-4cd0-8519-6b63df75c49d/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 11:02:26,296 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2024-12-02 11:02:26,296 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2024-12-02 11:02:26,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 11:02:26,297 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-12-02 11:02:26,297 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-12-02 11:02:26,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-12-02 11:02:26,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-12-02 11:02:26,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-12-02 11:02:26,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-12-02 11:02:26,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-12-02 11:02:26,297 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 11:02:26,297 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 11:02:26,297 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-12-02 11:02:26,297 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-12-02 11:02:26,297 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-12-02 11:02:26,297 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-12-02 11:02:26,297 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-12-02 11:02:26,297 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_secure_zero [2024-12-02 11:02:26,298 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_secure_zero [2024-12-02 11:02:26,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 11:02:26,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 11:02:26,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-12-02 11:02:26,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-12-02 11:02:26,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-12-02 11:02:26,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-12-02 11:02:26,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-12-02 11:02:26,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 11:02:26,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 11:02:26,298 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-12-02 11:02:26,298 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-12-02 11:02:26,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-12-02 11:02:26,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-12-02 11:02:26,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-12-02 11:02:26,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-12-02 11:02:26,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-12-02 11:02:26,299 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2024-12-02 11:02:26,299 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2024-12-02 11:02:26,299 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 11:02:26,299 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 11:02:26,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-02 11:02:26,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-12-02 11:02:26,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-12-02 11:02:26,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-12-02 11:02:26,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-12-02 11:02:26,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-12-02 11:02:26,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-12-02 11:02:26,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-12-02 11:02:26,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-12-02 11:02:26,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-12-02 11:02:26,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-12-02 11:02:26,301 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-12-02 11:02:26,301 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-12-02 11:02:26,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 11:02:26,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 11:02:26,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-12-02 11:02:26,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-12-02 11:02:26,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-12-02 11:02:26,302 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2024-12-02 11:02:26,302 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2024-12-02 11:02:26,302 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2024-12-02 11:02:26,302 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2024-12-02 11:02:26,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 11:02:26,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 11:02:26,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 11:02:26,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 11:02:26,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-02 11:02:26,534 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 11:02:26,535 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 11:02:34,133 INFO L? ?]: Removed 72 outVars from TransFormulas that were not future-live. [2024-12-02 11:02:34,133 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 11:02:34,142 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 11:02:34,142 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-12-02 11:02:34,143 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:02:34 BoogieIcfgContainer [2024-12-02 11:02:34,143 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 11:02:34,145 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 11:02:34,145 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 11:02:34,148 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 11:02:34,148 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 11:02:24" (1/3) ... [2024-12-02 11:02:34,149 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55484ad6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:02:34, skipping insertion in model container [2024-12-02 11:02:34,149 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:02:25" (2/3) ... [2024-12-02 11:02:34,149 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55484ad6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:02:34, skipping insertion in model container [2024-12-02 11:02:34,149 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:02:34" (3/3) ... [2024-12-02 11:02:34,150 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_clean_up_secure_harness_negated.i [2024-12-02 11:02:34,161 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 11:02:34,162 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. [2024-12-02 11:02:34,201 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 11:02:34,210 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;@23145560, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 11:02:34,210 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 11:02:34,213 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) [2024-12-02 11:02:34,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-12-02 11:02:34,220 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:02:34,220 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] [2024-12-02 11:02:34,221 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:02:34,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:02:34,224 INFO L85 PathProgramCache]: Analyzing trace with hash -2095082959, now seen corresponding path program 1 times [2024-12-02 11:02:34,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:02:34,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736958273] [2024-12-02 11:02:34,230 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:02:34,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:04:02,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:04:05,075 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-12-02 11:04:05,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:04:05,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736958273] [2024-12-02 11:04:05,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736958273] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:04:05,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566760927] [2024-12-02 11:04:05,077 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:04:05,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:04:05,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb938c5-66e8-4cd0-8519-6b63df75c49d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:04:05,079 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb938c5-66e8-4cd0-8519-6b63df75c49d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:04:05,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb938c5-66e8-4cd0-8519-6b63df75c49d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 11:05:33,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:05:33,260 INFO L256 TraceCheckSpWp]: Trace formula consists of 7600 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 11:05:33,271 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:05:33,865 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-12-02 11:05:33,865 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:05:33,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566760927] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:05:33,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:05:33,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2024-12-02 11:05:33,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249190351] [2024-12-02 11:05:33,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:05:33,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 11:05:33,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:05:33,886 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 11:05:33,886 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-12-02 11:05:33,888 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) [2024-12-02 11:05:34,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:05:34,734 INFO L93 Difference]: Finished difference Result 239 states and 331 transitions. [2024-12-02 11:05:34,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 11:05:34,736 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 [2024-12-02 11:05:34,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:05:34,743 INFO L225 Difference]: With dead ends: 239 [2024-12-02 11:05:34,743 INFO L226 Difference]: Without dead ends: 118 [2024-12-02 11:05:34,747 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-12-02 11:05:34,749 INFO L435 NwaCegarLoop]: 120 mSDtfsCounter, 152 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 11:05:34,749 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 332 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 11:05:34,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-12-02 11:05:34,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2024-12-02 11:05:34,797 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) [2024-12-02 11:05:34,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 153 transitions. [2024-12-02 11:05:34,803 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 153 transitions. Word has length 77 [2024-12-02 11:05:34,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:05:34,803 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 153 transitions. [2024-12-02 11:05:34,803 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) [2024-12-02 11:05:34,803 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 153 transitions. [2024-12-02 11:05:34,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-12-02 11:05:34,806 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:05:34,806 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] [2024-12-02 11:05:34,823 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb938c5-66e8-4cd0-8519-6b63df75c49d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 11:05:35,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb938c5-66e8-4cd0-8519-6b63df75c49d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:05:35,007 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:05:35,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:05:35,007 INFO L85 PathProgramCache]: Analyzing trace with hash 16386302, now seen corresponding path program 1 times [2024-12-02 11:05:35,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:05:35,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323758717] [2024-12-02 11:05:35,007 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:05:35,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:07:02,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:07:03,248 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-12-02 11:07:03,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:07:03,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323758717] [2024-12-02 11:07:03,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323758717] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:07:03,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507754677] [2024-12-02 11:07:03,249 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:07:03,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:07:03,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb938c5-66e8-4cd0-8519-6b63df75c49d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:07:03,251 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb938c5-66e8-4cd0-8519-6b63df75c49d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:07:03,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb938c5-66e8-4cd0-8519-6b63df75c49d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 11:08:32,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:08:32,291 INFO L256 TraceCheckSpWp]: Trace formula consists of 7614 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 11:08:32,297 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:08:32,332 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-12-02 11:08:32,332 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:08:32,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507754677] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:08:32,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:08:32,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-12-02 11:08:32,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958090413] [2024-12-02 11:08:32,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:08:32,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:08:32,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:08:32,334 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:08:32,334 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:08:32,334 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) [2024-12-02 11:08:32,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:08:32,451 INFO L93 Difference]: Finished difference Result 214 states and 288 transitions. [2024-12-02 11:08:32,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 11:08:32,452 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 [2024-12-02 11:08:32,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:08:32,454 INFO L225 Difference]: With dead ends: 214 [2024-12-02 11:08:32,455 INFO L226 Difference]: Without dead ends: 121 [2024-12-02 11:08:32,456 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 [2024-12-02 11:08:32,457 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 [2024-12-02 11:08:32,457 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] [2024-12-02 11:08:32,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-12-02 11:08:32,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 120. [2024-12-02 11:08:32,470 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) [2024-12-02 11:08:32,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 155 transitions. [2024-12-02 11:08:32,471 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 155 transitions. Word has length 83 [2024-12-02 11:08:32,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:08:32,472 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 155 transitions. [2024-12-02 11:08:32,472 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) [2024-12-02 11:08:32,472 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 155 transitions. [2024-12-02 11:08:32,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-12-02 11:08:32,474 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:08:32,474 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] [2024-12-02 11:08:32,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb938c5-66e8-4cd0-8519-6b63df75c49d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-12-02 11:08:32,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb938c5-66e8-4cd0-8519-6b63df75c49d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:08:32,674 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:08:32,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:08:32,675 INFO L85 PathProgramCache]: Analyzing trace with hash -2012199808, now seen corresponding path program 1 times [2024-12-02 11:08:32,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:08:32,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913839315] [2024-12-02 11:08:32,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:08:32,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:09:58,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:10:00,091 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-12-02 11:10:00,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:10:00,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913839315] [2024-12-02 11:10:00,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913839315] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:10:00,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434106464] [2024-12-02 11:10:00,092 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:10:00,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:10:00,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb938c5-66e8-4cd0-8519-6b63df75c49d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:10:00,094 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb938c5-66e8-4cd0-8519-6b63df75c49d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:10:00,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb938c5-66e8-4cd0-8519-6b63df75c49d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 11:11:27,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:11:27,434 INFO L256 TraceCheckSpWp]: Trace formula consists of 7609 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 11:11:27,439 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:11:27,470 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-12-02 11:11:27,470 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:11:27,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434106464] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:11:27,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:11:27,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-12-02 11:11:27,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96397201] [2024-12-02 11:11:27,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:11:27,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:11:27,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:11:27,471 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:11:27,471 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:11:27,472 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) [2024-12-02 11:11:27,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:11:27,566 INFO L93 Difference]: Finished difference Result 217 states and 291 transitions. [2024-12-02 11:11:27,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 11:11:27,566 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 [2024-12-02 11:11:27,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:11:27,567 INFO L225 Difference]: With dead ends: 217 [2024-12-02 11:11:27,568 INFO L226 Difference]: Without dead ends: 122 [2024-12-02 11:11:27,568 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 [2024-12-02 11:11:27,569 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 [2024-12-02 11:11:27,569 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] [2024-12-02 11:11:27,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-12-02 11:11:27,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2024-12-02 11:11:27,579 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) [2024-12-02 11:11:27,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 157 transitions. [2024-12-02 11:11:27,581 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 157 transitions. Word has length 83 [2024-12-02 11:11:27,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:11:27,581 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 157 transitions. [2024-12-02 11:11:27,581 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) [2024-12-02 11:11:27,581 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 157 transitions. [2024-12-02 11:11:27,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-12-02 11:11:27,583 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:11:27,583 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] [2024-12-02 11:11:27,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb938c5-66e8-4cd0-8519-6b63df75c49d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-12-02 11:11:27,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb938c5-66e8-4cd0-8519-6b63df75c49d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:11:27,783 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:11:27,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:11:27,784 INFO L85 PathProgramCache]: Analyzing trace with hash -427514372, now seen corresponding path program 1 times [2024-12-02 11:11:27,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:11:27,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527266103] [2024-12-02 11:11:27,784 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:11:27,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:12:54,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:12:55,837 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-12-02 11:12:55,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:12:55,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527266103] [2024-12-02 11:12:55,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527266103] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:12:55,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945370214] [2024-12-02 11:12:55,838 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:12:55,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:12:55,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb938c5-66e8-4cd0-8519-6b63df75c49d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:12:55,840 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb938c5-66e8-4cd0-8519-6b63df75c49d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:12:55,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb938c5-66e8-4cd0-8519-6b63df75c49d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 11:14:23,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:14:24,020 INFO L256 TraceCheckSpWp]: Trace formula consists of 7617 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 11:14:24,024 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:14:24,691 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-02 11:14:24,691 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:14:24,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945370214] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:14:24,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:14:24,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2024-12-02 11:14:24,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524064308] [2024-12-02 11:14:24,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:14:24,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 11:14:24,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:14:24,693 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 11:14:24,693 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-12-02 11:14:24,693 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) [2024-12-02 11:14:25,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:14:25,861 INFO L93 Difference]: Finished difference Result 216 states and 279 transitions. [2024-12-02 11:14:25,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 11:14:25,862 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 [2024-12-02 11:14:25,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:14:25,864 INFO L225 Difference]: With dead ends: 216 [2024-12-02 11:14:25,864 INFO L226 Difference]: Without dead ends: 122 [2024-12-02 11:14:25,864 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 [2024-12-02 11:14:25,865 INFO L435 NwaCegarLoop]: 116 mSDtfsCounter, 158 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 11:14:25,866 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 537 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 11:14:25,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-12-02 11:14:25,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2024-12-02 11:14:25,875 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) [2024-12-02 11:14:25,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 155 transitions. [2024-12-02 11:14:25,877 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 155 transitions. Word has length 83 [2024-12-02 11:14:25,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:14:25,877 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 155 transitions. [2024-12-02 11:14:25,878 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) [2024-12-02 11:14:25,878 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 155 transitions. [2024-12-02 11:14:25,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-12-02 11:14:25,879 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:14:25,879 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] [2024-12-02 11:14:25,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb938c5-66e8-4cd0-8519-6b63df75c49d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-12-02 11:14:26,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb938c5-66e8-4cd0-8519-6b63df75c49d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:14:26,079 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:14:26,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:14:26,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1964885625, now seen corresponding path program 2 times [2024-12-02 11:14:26,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:14:26,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477918531] [2024-12-02 11:14:26,080 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 11:14:26,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:15:53,640 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 11:15:53,640 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 11:15:57,546 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-12-02 11:15:57,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:15:57,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477918531] [2024-12-02 11:15:57,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477918531] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:15:57,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:15:57,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 11:15:57,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096133991] [2024-12-02 11:15:57,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:15:57,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 11:15:57,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:15:57,548 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 11:15:57,548 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 11:15:57,548 INFO L87 Difference]: Start difference. First operand 122 states and 155 transitions. Second operand has 7 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2024-12-02 11:15:57,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:15:57,838 INFO L93 Difference]: Finished difference Result 130 states and 163 transitions. [2024-12-02 11:15:57,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 11:15:57,838 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 89 [2024-12-02 11:15:57,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:15:57,840 INFO L225 Difference]: With dead ends: 130 [2024-12-02 11:15:57,840 INFO L226 Difference]: Without dead ends: 128 [2024-12-02 11:15:57,840 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 11:15:57,841 INFO L435 NwaCegarLoop]: 142 mSDtfsCounter, 3 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 11:15:57,841 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 842 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 11:15:57,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-12-02 11:15:57,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 127. [2024-12-02 11:15:57,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 85 states have (on average 1.1764705882352942) internal successors, (100), 87 states have internal predecessors, (100), 29 states have call successors, (29), 11 states have call predecessors, (29), 12 states have return successors, (31), 28 states have call predecessors, (31), 28 states have call successors, (31) [2024-12-02 11:15:57,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 160 transitions. [2024-12-02 11:15:57,852 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 160 transitions. Word has length 89 [2024-12-02 11:15:57,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:15:57,852 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 160 transitions. [2024-12-02 11:15:57,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2024-12-02 11:15:57,853 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 160 transitions. [2024-12-02 11:15:57,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-12-02 11:15:57,854 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:15:57,854 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2024-12-02 11:15:57,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 11:15:57,854 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:15:57,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:15:57,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1023003730, now seen corresponding path program 3 times [2024-12-02 11:15:57,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:15:57,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453169220] [2024-12-02 11:15:57,855 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 11:15:57,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:17:24,043 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-12-02 11:17:24,043 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat