./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8288dc-1d92-4e05-b37a-4a2eb7aebd83/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8288dc-1d92-4e05-b37a-4a2eb7aebd83/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8288dc-1d92-4e05-b37a-4a2eb7aebd83/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8288dc-1d92-4e05-b37a-4a2eb7aebd83/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8288dc-1d92-4e05-b37a-4a2eb7aebd83/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8288dc-1d92-4e05-b37a-4a2eb7aebd83/bin/uautomizer-verify-LYvppIcaGC --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 caa9ea3c4b01be424b9d4542ff8acdcb39307db8022d65ba85a629a6a4ef591a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 18:41:40,079 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 18:41:40,176 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8288dc-1d92-4e05-b37a-4a2eb7aebd83/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-23 18:41:40,185 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 18:41:40,185 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 18:41:40,223 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 18:41:40,224 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 18:41:40,224 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 18:41:40,225 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 18:41:40,225 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 18:41:40,226 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 18:41:40,226 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 18:41:40,227 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 18:41:40,227 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 18:41:40,227 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 18:41:40,227 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 18:41:40,227 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 18:41:40,227 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 18:41:40,227 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 18:41:40,228 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 18:41:40,228 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 18:41:40,228 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 18:41:40,228 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 18:41:40,228 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 18:41:40,228 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 18:41:40,228 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 18:41:40,228 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 18:41:40,228 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 18:41:40,229 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 18:41:40,229 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:41:40,229 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 18:41:40,229 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 18:41:40,229 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 18:41:40,229 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 18:41:40,229 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:41:40,230 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 18:41:40,230 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 18:41:40,230 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 18:41:40,230 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 18:41:40,230 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 18:41:40,230 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 18:41:40,230 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 18:41:40,230 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 18:41:40,230 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 18:41:40,231 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 18:41:40,231 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_3e8288dc-1d92-4e05-b37a-4a2eb7aebd83/bin/uautomizer-verify-LYvppIcaGC 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 -> caa9ea3c4b01be424b9d4542ff8acdcb39307db8022d65ba85a629a6a4ef591a [2024-11-23 18:41:40,561 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 18:41:40,570 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 18:41:40,573 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 18:41:40,574 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 18:41:40,575 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 18:41:40,576 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8288dc-1d92-4e05-b37a-4a2eb7aebd83/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i [2024-11-23 18:41:43,615 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8288dc-1d92-4e05-b37a-4a2eb7aebd83/bin/uautomizer-verify-LYvppIcaGC/data/97eaa1047/a06b651e9ed74ef4a75ce74ce3251243/FLAG5b6e868b1 [2024-11-23 18:41:44,400 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 18:41:44,401 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8288dc-1d92-4e05-b37a-4a2eb7aebd83/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i [2024-11-23 18:41:44,471 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8288dc-1d92-4e05-b37a-4a2eb7aebd83/bin/uautomizer-verify-LYvppIcaGC/data/97eaa1047/a06b651e9ed74ef4a75ce74ce3251243/FLAG5b6e868b1 [2024-11-23 18:41:44,496 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8288dc-1d92-4e05-b37a-4a2eb7aebd83/bin/uautomizer-verify-LYvppIcaGC/data/97eaa1047/a06b651e9ed74ef4a75ce74ce3251243 [2024-11-23 18:41:44,499 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 18:41:44,501 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 18:41:44,505 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 18:41:44,505 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 18:41:44,514 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 18:41:44,515 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:41:44" (1/1) ... [2024-11-23 18:41:44,516 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7186af2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:41:44, skipping insertion in model container [2024-11-23 18:41:44,516 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:41:44" (1/1) ... [2024-11-23 18:41:44,659 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 18:41:45,000 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_3e8288dc-1d92-4e05-b37a-4a2eb7aebd83/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i[4499,4512] [2024-11-23 18:41:45,008 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_3e8288dc-1d92-4e05-b37a-4a2eb7aebd83/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i[4559,4572] [2024-11-23 18:41:46,174 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:41:46,175 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:41:46,175 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:41:46,176 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:41:46,177 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:41:46,211 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:41:46,216 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:41:46,220 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:41:46,220 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:41:47,214 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:41:47,215 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:41:47,328 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 18:41:47,407 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 18:41:47,422 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_3e8288dc-1d92-4e05-b37a-4a2eb7aebd83/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i[4499,4512] [2024-11-23 18:41:47,423 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_3e8288dc-1d92-4e05-b37a-4a2eb7aebd83/sv-benchmarks/c/aws-c-common/aws_string_eq_byte_cursor_harness.i[4559,4572] [2024-11-23 18:41:47,478 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:41:47,479 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:41:47,479 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:41:47,480 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:41:47,482 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:41:47,491 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:41:47,491 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:41:47,493 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:41:47,495 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:41:47,734 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8253] [2024-11-23 18:41:47,736 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:41:47,737 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 18:41:47,756 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8739-8750] [2024-11-23 18:41:47,809 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 18:41:48,130 INFO L204 MainTranslator]: Completed translation [2024-11-23 18:41:48,131 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:41:48 WrapperNode [2024-11-23 18:41:48,131 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 18:41:48,133 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 18:41:48,133 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 18:41:48,133 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 18:41:48,144 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:41:48" (1/1) ... [2024-11-23 18:41:48,266 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:41:48" (1/1) ... [2024-11-23 18:41:48,336 INFO L138 Inliner]: procedures = 682, calls = 2795, calls flagged for inlining = 60, calls inlined = 7, statements flattened = 879 [2024-11-23 18:41:48,337 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 18:41:48,338 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 18:41:48,338 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 18:41:48,338 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 18:41:48,349 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:41:48" (1/1) ... [2024-11-23 18:41:48,351 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:41:48" (1/1) ... [2024-11-23 18:41:48,363 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:41:48" (1/1) ... [2024-11-23 18:41:48,489 INFO L175 MemorySlicer]: Split 543 memory accesses to 7 slices as follows [2, 13, 257, 5, 238, 16, 12]. 47 percent of accesses are in the largest equivalence class. The 31 initializations are split as follows [2, 2, 0, 5, 6, 16, 0]. The 493 writes are split as follows [0, 1, 257, 0, 232, 0, 3]. [2024-11-23 18:41:48,489 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:41:48" (1/1) ... [2024-11-23 18:41:48,490 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:41:48" (1/1) ... [2024-11-23 18:41:48,554 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:41:48" (1/1) ... [2024-11-23 18:41:48,555 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:41:48" (1/1) ... [2024-11-23 18:41:48,563 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:41:48" (1/1) ... [2024-11-23 18:41:48,578 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:41:48" (1/1) ... [2024-11-23 18:41:48,589 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:41:48" (1/1) ... [2024-11-23 18:41:48,606 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 18:41:48,612 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 18:41:48,615 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 18:41:48,615 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 18:41:48,617 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:41:48" (1/1) ... [2024-11-23 18:41:48,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:41:48,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8288dc-1d92-4e05-b37a-4a2eb7aebd83/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:41:48,691 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8288dc-1d92-4e05-b37a-4a2eb7aebd83/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 18:41:48,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8288dc-1d92-4e05-b37a-4a2eb7aebd83/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 18:41:48,743 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2024-11-23 18:41:48,743 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2024-11-23 18:41:48,745 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2024-11-23 18:41:48,745 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2024-11-23 18:41:48,745 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_string_is_allocated_bounded_length [2024-11-23 18:41:48,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_string_is_allocated_bounded_length [2024-11-23 18:41:48,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-23 18:41:48,746 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-23 18:41:48,746 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-23 18:41:48,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-23 18:41:48,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-23 18:41:48,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-23 18:41:48,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-23 18:41:48,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-23 18:41:48,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-23 18:41:48,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2024-11-23 18:41:48,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-23 18:41:48,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-23 18:41:48,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-23 18:41:48,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-23 18:41:48,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-23 18:41:48,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-23 18:41:48,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-23 18:41:48,748 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-23 18:41:48,748 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-23 18:41:48,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-23 18:41:48,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 18:41:48,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-23 18:41:48,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-23 18:41:48,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-23 18:41:48,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-23 18:41:48,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-23 18:41:48,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-23 18:41:48,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-23 18:41:48,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 18:41:48,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 18:41:48,751 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-23 18:41:48,751 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-23 18:41:48,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-23 18:41:48,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-23 18:41:48,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-23 18:41:48,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-23 18:41:48,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-23 18:41:48,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-11-23 18:41:48,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2024-11-23 18:41:48,752 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-23 18:41:48,752 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-23 18:41:48,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-23 18:41:48,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-23 18:41:48,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-23 18:41:48,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-23 18:41:48,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-23 18:41:48,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-23 18:41:48,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-23 18:41:48,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-23 18:41:48,752 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq [2024-11-23 18:41:48,752 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq [2024-11-23 18:41:48,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-23 18:41:48,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-23 18:41:48,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-23 18:41:48,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-23 18:41:48,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-23 18:41:48,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-23 18:41:48,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-23 18:41:48,753 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-11-23 18:41:48,753 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-11-23 18:41:48,753 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-23 18:41:48,753 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-23 18:41:48,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-23 18:41:48,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-23 18:41:48,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-23 18:41:48,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-23 18:41:48,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-23 18:41:48,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-23 18:41:48,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-23 18:41:48,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 18:41:48,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 18:41:48,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-23 18:41:48,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-23 18:41:48,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-23 18:41:48,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-23 18:41:48,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-23 18:41:49,198 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 18:41:49,201 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 18:41:58,793 INFO L? ?]: Removed 99 outVars from TransFormulas that were not future-live. [2024-11-23 18:41:58,793 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 18:41:58,806 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 18:41:58,806 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-23 18:41:58,807 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:41:58 BoogieIcfgContainer [2024-11-23 18:41:58,807 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 18:41:58,810 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 18:41:58,810 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 18:41:58,815 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 18:41:58,816 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 06:41:44" (1/3) ... [2024-11-23 18:41:58,817 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@363588a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:41:58, skipping insertion in model container [2024-11-23 18:41:58,817 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:41:48" (2/3) ... [2024-11-23 18:41:58,817 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@363588a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:41:58, skipping insertion in model container [2024-11-23 18:41:58,817 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:41:58" (3/3) ... [2024-11-23 18:41:58,819 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_string_eq_byte_cursor_harness.i [2024-11-23 18:41:58,837 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 18:41:58,843 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_string_eq_byte_cursor_harness.i that has 11 procedures, 123 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-23 18:41:58,921 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 18:41:58,940 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;@53dce0e6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 18:41:58,941 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 18:41:58,946 INFO L276 IsEmpty]: Start isEmpty. Operand has 123 states, 82 states have (on average 1.2804878048780488) internal successors, (105), 83 states have internal predecessors, (105), 29 states have call successors, (29), 10 states have call predecessors, (29), 10 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-11-23 18:41:58,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-23 18:41:58,960 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:41:58,961 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:41:58,961 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:41:58,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:41:58,968 INFO L85 PathProgramCache]: Analyzing trace with hash 185201470, now seen corresponding path program 1 times [2024-11-23 18:41:58,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:41:58,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064291060] [2024-11-23 18:41:58,982 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:41:58,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:43:30,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:43:34,594 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-23 18:43:34,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:43:34,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064291060] [2024-11-23 18:43:34,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064291060] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:43:34,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685681968] [2024-11-23 18:43:34,601 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:43:34,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:43:34,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8288dc-1d92-4e05-b37a-4a2eb7aebd83/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:43:34,605 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8288dc-1d92-4e05-b37a-4a2eb7aebd83/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:43:34,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8288dc-1d92-4e05-b37a-4a2eb7aebd83/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 18:45:08,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:45:08,814 INFO L256 TraceCheckSpWp]: Trace formula consists of 7600 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-23 18:45:08,831 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:45:08,850 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-23 18:45:08,850 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:45:08,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685681968] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:45:08,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:45:08,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 5 [2024-11-23 18:45:08,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944956651] [2024-11-23 18:45:08,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:45:08,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 18:45:08,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:45:08,876 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 18:45:08,876 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:45:08,879 INFO L87 Difference]: Start difference. First operand has 123 states, 82 states have (on average 1.2804878048780488) internal successors, (105), 83 states have internal predecessors, (105), 29 states have call successors, (29), 10 states have call predecessors, (29), 10 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-23 18:45:08,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:45:08,917 INFO L93 Difference]: Finished difference Result 237 states and 329 transitions. [2024-11-23 18:45:08,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 18:45:08,919 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 59 [2024-11-23 18:45:08,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:45:08,927 INFO L225 Difference]: With dead ends: 237 [2024-11-23 18:45:08,927 INFO L226 Difference]: Without dead ends: 118 [2024-11-23 18:45:08,931 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:45:08,934 INFO L435 NwaCegarLoop]: 161 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, 161 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 [2024-11-23 18:45:08,934 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:45:08,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-23 18:45:08,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2024-11-23 18:45:08,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 78 states have (on average 1.2692307692307692) internal successors, (99), 79 states have internal predecessors, (99), 29 states have call successors, (29), 10 states have call predecessors, (29), 10 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-23 18:45:08,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 156 transitions. [2024-11-23 18:45:08,979 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 156 transitions. Word has length 59 [2024-11-23 18:45:08,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:45:08,981 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 156 transitions. [2024-11-23 18:45:08,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-23 18:45:08,981 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 156 transitions. [2024-11-23 18:45:08,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-23 18:45:08,984 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:45:08,984 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:45:09,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8288dc-1d92-4e05-b37a-4a2eb7aebd83/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-23 18:45:09,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8288dc-1d92-4e05-b37a-4a2eb7aebd83/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-23 18:45:09,185 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:45:09,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:45:09,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1931526724, now seen corresponding path program 1 times [2024-11-23 18:45:09,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:45:09,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142710709] [2024-11-23 18:45:09,186 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:45:09,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:46:39,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:46:41,794 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-23 18:46:41,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:46:41,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142710709] [2024-11-23 18:46:41,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142710709] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:46:41,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602650020] [2024-11-23 18:46:41,796 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:46:41,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:46:41,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8288dc-1d92-4e05-b37a-4a2eb7aebd83/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:46:41,799 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8288dc-1d92-4e05-b37a-4a2eb7aebd83/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:46:41,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8288dc-1d92-4e05-b37a-4a2eb7aebd83/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 18:48:12,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:48:12,834 INFO L256 TraceCheckSpWp]: Trace formula consists of 7600 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 18:48:12,841 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:48:13,603 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 18:48:13,604 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:48:14,581 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-23 18:48:14,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602650020] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:48:14,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:48:14,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 11 [2024-11-23 18:48:14,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718556764] [2024-11-23 18:48:14,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:48:14,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 18:48:14,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:48:14,588 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 18:48:14,588 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-23 18:48:14,590 INFO L87 Difference]: Start difference. First operand 118 states and 156 transitions. Second operand has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 7 states have call successors, (20), 3 states have call predecessors, (20), 5 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) [2024-11-23 18:48:15,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:48:15,991 INFO L93 Difference]: Finished difference Result 202 states and 269 transitions. [2024-11-23 18:48:15,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 18:48:15,992 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 7 states have call successors, (20), 3 states have call predecessors, (20), 5 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) Word has length 59 [2024-11-23 18:48:15,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:48:15,996 INFO L225 Difference]: With dead ends: 202 [2024-11-23 18:48:15,996 INFO L226 Difference]: Without dead ends: 121 [2024-11-23 18:48:15,999 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-23 18:48:16,002 INFO L435 NwaCegarLoop]: 131 mSDtfsCounter, 292 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:48:16,003 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 479 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-23 18:48:16,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-11-23 18:48:16,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2024-11-23 18:48:16,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 80 states have (on average 1.2625) internal successors, (101), 82 states have internal predecessors, (101), 29 states have call successors, (29), 10 states have call predecessors, (29), 11 states have return successors, (29), 28 states have call predecessors, (29), 28 states have call successors, (29) [2024-11-23 18:48:16,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 159 transitions. [2024-11-23 18:48:16,021 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 159 transitions. Word has length 59 [2024-11-23 18:48:16,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:48:16,022 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 159 transitions. [2024-11-23 18:48:16,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 7 states have call successors, (20), 3 states have call predecessors, (20), 5 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) [2024-11-23 18:48:16,022 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 159 transitions. [2024-11-23 18:48:16,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-23 18:48:16,025 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:48:16,025 INFO L218 NwaCegarLoop]: trace histogram [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, 1] [2024-11-23 18:48:16,046 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8288dc-1d92-4e05-b37a-4a2eb7aebd83/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-23 18:48:16,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8288dc-1d92-4e05-b37a-4a2eb7aebd83/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:48:16,226 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:48:16,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:48:16,226 INFO L85 PathProgramCache]: Analyzing trace with hash -697838905, now seen corresponding path program 1 times [2024-11-23 18:48:16,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:48:16,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500411313] [2024-11-23 18:48:16,227 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:48:16,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:49:47,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:49:50,170 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-23 18:49:50,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:49:50,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500411313] [2024-11-23 18:49:50,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500411313] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:49:50,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:49:50,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 18:49:50,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097162362] [2024-11-23 18:49:50,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:49:50,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:49:50,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:49:50,173 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:49:50,173 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:49:50,173 INFO L87 Difference]: Start difference. First operand 121 states and 159 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-23 18:49:50,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:49:50,339 INFO L93 Difference]: Finished difference Result 203 states and 270 transitions. [2024-11-23 18:49:50,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 18:49:50,340 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 63 [2024-11-23 18:49:50,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:49:50,343 INFO L225 Difference]: With dead ends: 203 [2024-11-23 18:49:50,343 INFO L226 Difference]: Without dead ends: 149 [2024-11-23 18:49:50,344 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:49:50,346 INFO L435 NwaCegarLoop]: 153 mSDtfsCounter, 10 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:49:50,346 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 451 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:49:50,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-11-23 18:49:50,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2024-11-23 18:49:50,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 98 states have (on average 1.2653061224489797) internal successors, (124), 100 states have internal predecessors, (124), 39 states have call successors, (39), 10 states have call predecessors, (39), 11 states have return successors, (40), 38 states have call predecessors, (40), 38 states have call successors, (40) [2024-11-23 18:49:50,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 203 transitions. [2024-11-23 18:49:50,374 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 203 transitions. Word has length 63 [2024-11-23 18:49:50,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:49:50,375 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 203 transitions. [2024-11-23 18:49:50,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-23 18:49:50,376 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 203 transitions. [2024-11-23 18:49:50,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-23 18:49:50,379 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:49:50,379 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2024-11-23 18:49:50,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 18:49:50,379 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:49:50,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:49:50,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1931975174, now seen corresponding path program 1 times [2024-11-23 18:49:50,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:49:50,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772887007] [2024-11-23 18:49:50,381 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:49:50,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:51:36,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:51:43,480 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-23 18:51:43,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:51:43,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772887007] [2024-11-23 18:51:43,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772887007] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:51:43,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:51:43,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 18:51:43,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567541796] [2024-11-23 18:51:43,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:51:43,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 18:51:43,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:51:43,482 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 18:51:43,482 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-23 18:51:43,482 INFO L87 Difference]: Start difference. First operand 149 states and 203 transitions. Second operand has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-23 18:51:43,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:51:43,931 INFO L93 Difference]: Finished difference Result 160 states and 217 transitions. [2024-11-23 18:51:43,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 18:51:43,932 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 63 [2024-11-23 18:51:43,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:51:43,936 INFO L225 Difference]: With dead ends: 160 [2024-11-23 18:51:43,938 INFO L226 Difference]: Without dead ends: 153 [2024-11-23 18:51:43,939 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-23 18:51:43,940 INFO L435 NwaCegarLoop]: 155 mSDtfsCounter, 3 mSDsluCounter, 913 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1068 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 18:51:43,941 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1068 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 18:51:43,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2024-11-23 18:51:43,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2024-11-23 18:51:43,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 101 states have (on average 1.2574257425742574) internal successors, (127), 104 states have internal predecessors, (127), 39 states have call successors, (39), 10 states have call predecessors, (39), 12 states have return successors, (44), 38 states have call predecessors, (44), 38 states have call successors, (44) [2024-11-23 18:51:43,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 210 transitions. [2024-11-23 18:51:43,963 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 210 transitions. Word has length 63 [2024-11-23 18:51:43,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:51:43,964 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 210 transitions. [2024-11-23 18:51:43,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-23 18:51:43,964 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 210 transitions. [2024-11-23 18:51:43,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-23 18:51:43,966 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:51:43,966 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 18:51:43,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 18:51:43,967 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:51:43,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:51:43,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1883549874, now seen corresponding path program 1 times [2024-11-23 18:51:43,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:51:43,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170006071] [2024-11-23 18:51:43,968 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:51:43,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:53:16,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:53:23,502 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-23 18:53:23,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:53:23,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170006071] [2024-11-23 18:53:23,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170006071] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:53:23,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059849975] [2024-11-23 18:53:23,503 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:53:23,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:53:23,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8288dc-1d92-4e05-b37a-4a2eb7aebd83/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:53:23,507 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8288dc-1d92-4e05-b37a-4a2eb7aebd83/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:53:23,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8288dc-1d92-4e05-b37a-4a2eb7aebd83/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process