./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_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_773bc7dc-524f-4855-9373-b4d119c3e90c/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773bc7dc-524f-4855-9373-b4d119c3e90c/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_773bc7dc-524f-4855-9373-b4d119c3e90c/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773bc7dc-524f-4855-9373-b4d119c3e90c/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773bc7dc-524f-4855-9373-b4d119c3e90c/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_773bc7dc-524f-4855-9373-b4d119c3e90c/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 97f1929f60deed797b33f238413f59b0edc96867527757b3538e00bc90721005 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 11:03:54,442 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 11:03:54,501 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773bc7dc-524f-4855-9373-b4d119c3e90c/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-12-02 11:03:54,506 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 11:03:54,506 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 11:03:54,529 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 11:03:54,530 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 11:03:54,530 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 11:03:54,530 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 11:03:54,530 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 11:03:54,530 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 11:03:54,530 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 11:03:54,531 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 11:03:54,531 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 11:03:54,531 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 11:03:54,531 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 11:03:54,531 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 11:03:54,531 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 11:03:54,531 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 11:03:54,531 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 11:03:54,532 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 11:03:54,532 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 11:03:54,532 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 11:03:54,532 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 11:03:54,532 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 11:03:54,532 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 11:03:54,532 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 11:03:54,532 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 11:03:54,532 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 11:03:54,532 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:03:54,532 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 11:03:54,533 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 11:03:54,533 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 11:03:54,533 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 11:03:54,533 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:03:54,533 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 11:03:54,533 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 11:03:54,533 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 11:03:54,533 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 11:03:54,533 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 11:03:54,533 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 11:03:54,533 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 11:03:54,533 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 11:03:54,534 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 11:03:54,534 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 11:03:54,534 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_773bc7dc-524f-4855-9373-b4d119c3e90c/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 -> 97f1929f60deed797b33f238413f59b0edc96867527757b3538e00bc90721005 [2024-12-02 11:03:54,766 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 11:03:54,774 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 11:03:54,777 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 11:03:54,778 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 11:03:54,778 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 11:03:54,779 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773bc7dc-524f-4855-9373-b4d119c3e90c/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness_negated.i [2024-12-02 11:03:57,395 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773bc7dc-524f-4855-9373-b4d119c3e90c/bin/uautomizer-verify-84ZbGMXZE1/data/9cfee3aaa/b06727070aa84beeab038c7efac2b3d5/FLAGc84aba8d7 [2024-12-02 11:03:57,840 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 11:03:57,840 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773bc7dc-524f-4855-9373-b4d119c3e90c/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness_negated.i [2024-12-02 11:03:57,866 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773bc7dc-524f-4855-9373-b4d119c3e90c/bin/uautomizer-verify-84ZbGMXZE1/data/9cfee3aaa/b06727070aa84beeab038c7efac2b3d5/FLAGc84aba8d7 [2024-12-02 11:03:57,975 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773bc7dc-524f-4855-9373-b4d119c3e90c/bin/uautomizer-verify-84ZbGMXZE1/data/9cfee3aaa/b06727070aa84beeab038c7efac2b3d5 [2024-12-02 11:03:57,977 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 11:03:57,979 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 11:03:57,980 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 11:03:57,980 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 11:03:57,985 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 11:03:57,985 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:03:57" (1/1) ... [2024-12-02 11:03:57,986 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61638e92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:03:57, skipping insertion in model container [2024-12-02 11:03:57,986 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:03:57" (1/1) ... [2024-12-02 11:03:58,063 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 11:03:58,261 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_773bc7dc-524f-4855-9373-b4d119c3e90c/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness_negated.i[4489,4502] [2024-12-02 11:03:58,268 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_773bc7dc-524f-4855-9373-b4d119c3e90c/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness_negated.i[4549,4562] [2024-12-02 11:03:59,145 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:03:59,146 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:03:59,146 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:03:59,147 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:03:59,148 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:03:59,159 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:03:59,160 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:03:59,162 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:03:59,162 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:03:59,919 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:03:59,919 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:03:59,983 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 11:04:00,030 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 11:04:00,043 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_773bc7dc-524f-4855-9373-b4d119c3e90c/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness_negated.i[4489,4502] [2024-12-02 11:04:00,043 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_773bc7dc-524f-4855-9373-b4d119c3e90c/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness_negated.i[4549,4562] [2024-12-02 11:04:00,081 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:04:00,081 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:04:00,082 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:04:00,082 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:04:00,082 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:04:00,089 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:04:00,089 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:04:00,090 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:04:00,090 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:04:00,201 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8245] [2024-12-02 11:04:00,202 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:04:00,203 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 11:04:00,217 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8731-8742] [2024-12-02 11:04:00,231 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 11:04:00,427 INFO L204 MainTranslator]: Completed translation [2024-12-02 11:04:00,427 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:04:00 WrapperNode [2024-12-02 11:04:00,427 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 11:04:00,428 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 11:04:00,428 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 11:04:00,428 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 11:04:00,433 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:04:00" (1/1) ... [2024-12-02 11:04:00,488 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:04:00" (1/1) ... [2024-12-02 11:04:00,541 INFO L138 Inliner]: procedures = 680, calls = 2668, calls flagged for inlining = 60, calls inlined = 6, statements flattened = 902 [2024-12-02 11:04:00,542 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 11:04:00,542 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 11:04:00,543 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 11:04:00,543 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 11:04:00,552 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:04:00" (1/1) ... [2024-12-02 11:04:00,552 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:04:00" (1/1) ... [2024-12-02 11:04:00,557 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:04:00" (1/1) ... [2024-12-02 11:04:00,606 INFO L175 MemorySlicer]: Split 578 memory accesses to 6 slices as follows [2, 66, 257, 238, 6, 9]. 44 percent of accesses are in the largest equivalence class. The 29 initializations are split as follows [2, 16, 0, 6, 0, 5]. The 497 writes are split as follows [0, 6, 257, 232, 2, 0]. [2024-12-02 11:04:00,606 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:04:00" (1/1) ... [2024-12-02 11:04:00,607 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:04:00" (1/1) ... [2024-12-02 11:04:00,639 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:04:00" (1/1) ... [2024-12-02 11:04:00,641 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:04:00" (1/1) ... [2024-12-02 11:04:00,644 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:04:00" (1/1) ... [2024-12-02 11:04:00,652 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:04:00" (1/1) ... [2024-12-02 11:04:00,656 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:04:00" (1/1) ... [2024-12-02 11:04:00,667 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 11:04:00,668 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 11:04:00,668 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 11:04:00,668 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 11:04:00,669 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:04:00" (1/1) ... [2024-12-02 11:04:00,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:04:00,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773bc7dc-524f-4855-9373-b4d119c3e90c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:04:00,707 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773bc7dc-524f-4855-9373-b4d119c3e90c/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 11:04:00,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773bc7dc-524f-4855-9373-b4d119c3e90c/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 11:04:00,734 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2024-12-02 11:04:00,734 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2024-12-02 11:04:00,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 11:04:00,735 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-12-02 11:04:00,735 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-12-02 11:04:00,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-12-02 11:04:00,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-12-02 11:04:00,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-12-02 11:04:00,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-12-02 11:04:00,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-12-02 11:04:00,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-12-02 11:04:00,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 11:04:00,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 11:04:00,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-12-02 11:04:00,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-12-02 11:04:00,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-12-02 11:04:00,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-12-02 11:04:00,736 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-12-02 11:04:00,736 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-12-02 11:04:00,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 11:04:00,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 11:04:00,736 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2024-12-02 11:04:00,736 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2024-12-02 11:04:00,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-12-02 11:04:00,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-12-02 11:04:00,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-12-02 11:04:00,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-12-02 11:04:00,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-12-02 11:04:00,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-12-02 11:04:00,736 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_buf_has_allocated_buffer_member [2024-12-02 11:04:00,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_buf_has_allocated_buffer_member [2024-12-02 11:04:00,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 11:04:00,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 11:04:00,736 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-12-02 11:04:00,736 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-12-02 11:04:00,736 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2024-12-02 11:04:00,737 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2024-12-02 11:04:00,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-12-02 11:04:00,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-12-02 11:04:00,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-12-02 11:04:00,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-12-02 11:04:00,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-12-02 11:04:00,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-12-02 11:04:00,737 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 11:04:00,737 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 11:04:00,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-02 11:04:00,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-12-02 11:04:00,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-12-02 11:04:00,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-12-02 11:04:00,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-12-02 11:04:00,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-12-02 11:04:00,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-12-02 11:04:00,737 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq [2024-12-02 11:04:00,737 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq [2024-12-02 11:04:00,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-12-02 11:04:00,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-12-02 11:04:00,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-12-02 11:04:00,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-12-02 11:04:00,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-12-02 11:04:00,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-12-02 11:04:00,738 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-12-02 11:04:00,738 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-12-02 11:04:00,738 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-12-02 11:04:00,738 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-12-02 11:04:00,738 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_bounded [2024-12-02 11:04:00,738 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_bounded [2024-12-02 11:04:00,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 11:04:00,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 11:04:00,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-12-02 11:04:00,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-12-02 11:04:00,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-12-02 11:04:00,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-12-02 11:04:00,738 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_buf_equivalence [2024-12-02 11:04:00,738 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_buf_equivalence [2024-12-02 11:04:00,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 11:04:00,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 11:04:00,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 11:04:00,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 11:04:00,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-02 11:04:00,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-12-02 11:04:00,992 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 11:04:00,994 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 11:04:08,839 INFO L? ?]: Removed 94 outVars from TransFormulas that were not future-live. [2024-12-02 11:04:08,839 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 11:04:08,851 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 11:04:08,851 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-12-02 11:04:08,852 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:04:08 BoogieIcfgContainer [2024-12-02 11:04:08,852 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 11:04:08,854 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 11:04:08,855 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 11:04:08,859 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 11:04:08,859 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 11:03:57" (1/3) ... [2024-12-02 11:04:08,860 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ebb4c5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:04:08, skipping insertion in model container [2024-12-02 11:04:08,860 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:04:00" (2/3) ... [2024-12-02 11:04:08,860 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ebb4c5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:04:08, skipping insertion in model container [2024-12-02 11:04:08,860 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:04:08" (3/3) ... [2024-12-02 11:04:08,862 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_eq_harness_negated.i [2024-12-02 11:04:08,877 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 11:04:08,878 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_byte_buf_eq_harness_negated.i that has 14 procedures, 153 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-12-02 11:04:08,934 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 11:04:08,945 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;@54e4ab72, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 11:04:08,946 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 11:04:08,950 INFO L276 IsEmpty]: Start isEmpty. Operand has 153 states, 92 states have (on average 1.2282608695652173) internal successors, (113), 93 states have internal predecessors, (113), 46 states have call successors, (46), 13 states have call predecessors, (46), 13 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-12-02 11:04:08,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-12-02 11:04:08,961 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:04:08,962 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:04:08,962 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:04:08,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:04:08,967 INFO L85 PathProgramCache]: Analyzing trace with hash 379353637, now seen corresponding path program 1 times [2024-12-02 11:04:08,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:04:08,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283171664] [2024-12-02 11:04:08,975 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:04:08,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:05:36,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:05:37,646 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-12-02 11:05:37,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:05:37,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283171664] [2024-12-02 11:05:37,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283171664] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:05:37,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368239735] [2024-12-02 11:05:37,647 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:05:37,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:05:37,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773bc7dc-524f-4855-9373-b4d119c3e90c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:05:37,650 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773bc7dc-524f-4855-9373-b4d119c3e90c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:05:37,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773bc7dc-524f-4855-9373-b4d119c3e90c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 11:07:06,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:07:06,264 INFO L256 TraceCheckSpWp]: Trace formula consists of 7876 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 11:07:06,278 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:07:06,294 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-12-02 11:07:06,295 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:07:06,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368239735] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:07:06,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:07:06,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 11:07:06,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733655042] [2024-12-02 11:07:06,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:07:06,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 11:07:06,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:07:06,318 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 11:07:06,318 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 11:07:06,321 INFO L87 Difference]: Start difference. First operand has 153 states, 92 states have (on average 1.2282608695652173) internal successors, (113), 93 states have internal predecessors, (113), 46 states have call successors, (46), 13 states have call predecessors, (46), 13 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Second operand has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 11:07:06,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:07:06,353 INFO L93 Difference]: Finished difference Result 302 states and 436 transitions. [2024-12-02 11:07:06,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 11:07:06,355 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 113 [2024-12-02 11:07:06,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:07:06,362 INFO L225 Difference]: With dead ends: 302 [2024-12-02 11:07:06,362 INFO L226 Difference]: Without dead ends: 148 [2024-12-02 11:07:06,366 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 11:07:06,367 INFO L435 NwaCegarLoop]: 203 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:07:06,368 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:07:06,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-12-02 11:07:06,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2024-12-02 11:07:06,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 88 states have (on average 1.2159090909090908) internal successors, (107), 89 states have internal predecessors, (107), 46 states have call successors, (46), 13 states have call predecessors, (46), 13 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-12-02 11:07:06,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 198 transitions. [2024-12-02 11:07:06,401 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 198 transitions. Word has length 113 [2024-12-02 11:07:06,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:07:06,402 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 198 transitions. [2024-12-02 11:07:06,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 11:07:06,402 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 198 transitions. [2024-12-02 11:07:06,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-12-02 11:07:06,404 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:07:06,404 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:07:06,422 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773bc7dc-524f-4855-9373-b4d119c3e90c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 11:07:06,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773bc7dc-524f-4855-9373-b4d119c3e90c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 11:07:06,605 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:07:06,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:07:06,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1294752093, now seen corresponding path program 1 times [2024-12-02 11:07:06,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:07:06,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802660450] [2024-12-02 11:07:06,606 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:07:06,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:08:30,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:08:33,230 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-12-02 11:08:33,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:08:33,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802660450] [2024-12-02 11:08:33,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802660450] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:08:33,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177026358] [2024-12-02 11:08:33,230 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:08:33,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:08:33,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773bc7dc-524f-4855-9373-b4d119c3e90c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:08:33,233 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773bc7dc-524f-4855-9373-b4d119c3e90c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:08:33,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773bc7dc-524f-4855-9373-b4d119c3e90c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 11:09:58,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:09:58,977 INFO L256 TraceCheckSpWp]: Trace formula consists of 7876 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 11:09:58,984 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:09:59,558 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-12-02 11:09:59,558 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:09:59,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177026358] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:09:59,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:09:59,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2024-12-02 11:09:59,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423273407] [2024-12-02 11:09:59,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:09:59,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 11:09:59,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:09:59,560 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 11:09:59,560 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-12-02 11:09:59,560 INFO L87 Difference]: Start difference. First operand 148 states and 198 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-12-02 11:10:00,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:10:00,753 INFO L93 Difference]: Finished difference Result 292 states and 395 transitions. [2024-12-02 11:10:00,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 11:10:00,754 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 113 [2024-12-02 11:10:00,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:10:00,757 INFO L225 Difference]: With dead ends: 292 [2024-12-02 11:10:00,757 INFO L226 Difference]: Without dead ends: 151 [2024-12-02 11:10:00,758 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 110 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 11:10:00,759 INFO L435 NwaCegarLoop]: 155 mSDtfsCounter, 193 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:10:00,759 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 433 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 11:10:00,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2024-12-02 11:10:00,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2024-12-02 11:10:00,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 90 states have (on average 1.211111111111111) internal successors, (109), 92 states have internal predecessors, (109), 46 states have call successors, (46), 13 states have call predecessors, (46), 14 states have return successors, (51), 45 states have call predecessors, (51), 45 states have call successors, (51) [2024-12-02 11:10:00,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 206 transitions. [2024-12-02 11:10:00,773 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 206 transitions. Word has length 113 [2024-12-02 11:10:00,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:10:00,773 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 206 transitions. [2024-12-02 11:10:00,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-12-02 11:10:00,773 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 206 transitions. [2024-12-02 11:10:00,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-12-02 11:10:00,775 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:10:00,775 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:10:00,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773bc7dc-524f-4855-9373-b4d119c3e90c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-12-02 11:10:00,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773bc7dc-524f-4855-9373-b4d119c3e90c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-12-02 11:10:00,976 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:10:00,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:10:00,976 INFO L85 PathProgramCache]: Analyzing trace with hash 747366190, now seen corresponding path program 1 times [2024-12-02 11:10:00,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:10:00,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097178127] [2024-12-02 11:10:00,976 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:10:00,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:11:24,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:11:26,256 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-12-02 11:11:26,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:11:26,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097178127] [2024-12-02 11:11:26,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097178127] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:11:26,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472036155] [2024-12-02 11:11:26,256 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:11:26,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:11:26,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773bc7dc-524f-4855-9373-b4d119c3e90c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:11:26,258 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773bc7dc-524f-4855-9373-b4d119c3e90c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:11:26,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773bc7dc-524f-4855-9373-b4d119c3e90c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 11:12:51,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:12:51,305 INFO L256 TraceCheckSpWp]: Trace formula consists of 7893 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 11:12:51,311 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:12:52,000 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-12-02 11:12:52,000 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:12:52,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472036155] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:12:52,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:12:52,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2024-12-02 11:12:52,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14653510] [2024-12-02 11:12:52,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:12:52,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 11:12:52,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:12:52,002 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 11:12:52,002 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-12-02 11:12:52,002 INFO L87 Difference]: Start difference. First operand 151 states and 206 transitions. Second operand has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2024-12-02 11:12:53,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:12:53,280 INFO L93 Difference]: Finished difference Result 247 states and 339 transitions. [2024-12-02 11:12:53,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 11:12:53,281 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) Word has length 119 [2024-12-02 11:12:53,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:12:53,283 INFO L225 Difference]: With dead ends: 247 [2024-12-02 11:12:53,283 INFO L226 Difference]: Without dead ends: 151 [2024-12-02 11:12:53,284 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-12-02 11:12:53,284 INFO L435 NwaCegarLoop]: 154 mSDtfsCounter, 194 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:12:53,285 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 580 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 11:12:53,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2024-12-02 11:12:53,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2024-12-02 11:12:53,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 90 states have (on average 1.211111111111111) internal successors, (109), 92 states have internal predecessors, (109), 46 states have call successors, (46), 13 states have call predecessors, (46), 14 states have return successors, (49), 45 states have call predecessors, (49), 45 states have call successors, (49) [2024-12-02 11:12:53,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 204 transitions. [2024-12-02 11:12:53,300 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 204 transitions. Word has length 119 [2024-12-02 11:12:53,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:12:53,300 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 204 transitions. [2024-12-02 11:12:53,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2024-12-02 11:12:53,300 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 204 transitions. [2024-12-02 11:12:53,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-12-02 11:12:53,302 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:12:53,302 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:12:53,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773bc7dc-524f-4855-9373-b4d119c3e90c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-12-02 11:12:53,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773bc7dc-524f-4855-9373-b4d119c3e90c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-12-02 11:12:53,503 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:12:53,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:12:53,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1364020924, now seen corresponding path program 2 times [2024-12-02 11:12:53,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:12:53,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473031138] [2024-12-02 11:12:53,503 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 11:12:53,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:14:16,846 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 11:14:16,846 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 11:14:18,760 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2024-12-02 11:14:18,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:14:18,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473031138] [2024-12-02 11:14:18,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473031138] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:14:18,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633034578] [2024-12-02 11:14:18,760 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 11:14:18,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:14:18,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773bc7dc-524f-4855-9373-b4d119c3e90c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:14:18,794 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773bc7dc-524f-4855-9373-b4d119c3e90c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:14:18,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773bc7dc-524f-4855-9373-b4d119c3e90c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process