./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_from_c_str_harness-1.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_b9ba1fcd-9dc2-4ce2-a30f-451cd2670703/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9ba1fcd-9dc2-4ce2-a30f-451cd2670703/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_b9ba1fcd-9dc2-4ce2-a30f-451cd2670703/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9ba1fcd-9dc2-4ce2-a30f-451cd2670703/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_from_c_str_harness-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9ba1fcd-9dc2-4ce2-a30f-451cd2670703/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_b9ba1fcd-9dc2-4ce2-a30f-451cd2670703/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 05e02581adbae65f3c76984e6696604355ca8e8f10cecf21271078f0821410f3 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 23:10:06,537 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 23:10:06,664 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9ba1fcd-9dc2-4ce2-a30f-451cd2670703/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-23 23:10:06,674 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 23:10:06,674 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 23:10:06,703 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 23:10:06,704 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 23:10:06,704 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 23:10:06,704 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 23:10:06,705 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 23:10:06,705 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 23:10:06,705 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 23:10:06,705 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 23:10:06,706 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 23:10:06,706 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 23:10:06,706 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 23:10:06,706 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 23:10:06,706 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 23:10:06,707 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 23:10:06,707 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 23:10:06,707 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 23:10:06,707 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 23:10:06,707 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 23:10:06,707 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 23:10:06,707 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 23:10:06,708 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 23:10:06,708 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:10:06,708 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:10:06,708 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:10:06,709 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:10:06,709 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 23:10:06,709 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:10:06,709 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:10:06,709 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:10:06,709 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:10:06,710 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 23:10:06,710 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 23:10:06,710 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 23:10:06,710 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 23:10:06,710 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 23:10:06,710 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 23:10:06,711 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 23:10:06,711 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 23:10:06,711 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 23:10:06,711 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 23:10:06,711 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_b9ba1fcd-9dc2-4ce2-a30f-451cd2670703/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 -> 05e02581adbae65f3c76984e6696604355ca8e8f10cecf21271078f0821410f3 [2024-11-23 23:10:07,086 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 23:10:07,101 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 23:10:07,108 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 23:10:07,111 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 23:10:07,111 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 23:10:07,113 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9ba1fcd-9dc2-4ce2-a30f-451cd2670703/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_from_c_str_harness-1.i [2024-11-23 23:10:10,572 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9ba1fcd-9dc2-4ce2-a30f-451cd2670703/bin/uautomizer-verify-LYvppIcaGC/data/ec292fea8/8a1c4244649946cdaa1adc8a3cb154cf/FLAG346c96eb8 [2024-11-23 23:10:11,498 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 23:10:11,499 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9ba1fcd-9dc2-4ce2-a30f-451cd2670703/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_c_str_harness-1.i [2024-11-23 23:10:11,574 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9ba1fcd-9dc2-4ce2-a30f-451cd2670703/bin/uautomizer-verify-LYvppIcaGC/data/ec292fea8/8a1c4244649946cdaa1adc8a3cb154cf/FLAG346c96eb8 [2024-11-23 23:10:11,600 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9ba1fcd-9dc2-4ce2-a30f-451cd2670703/bin/uautomizer-verify-LYvppIcaGC/data/ec292fea8/8a1c4244649946cdaa1adc8a3cb154cf [2024-11-23 23:10:11,603 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 23:10:11,607 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 23:10:11,609 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 23:10:11,610 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 23:10:11,619 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 23:10:11,620 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:10:11" (1/1) ... [2024-11-23 23:10:11,623 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cfe5398 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:10:11, skipping insertion in model container [2024-11-23 23:10:11,624 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:10:11" (1/1) ... [2024-11-23 23:10:11,789 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:10:12,188 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_b9ba1fcd-9dc2-4ce2-a30f-451cd2670703/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_c_str_harness-1.i[4497,4510] [2024-11-23 23:10:12,200 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_b9ba1fcd-9dc2-4ce2-a30f-451cd2670703/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_c_str_harness-1.i[4557,4570] [2024-11-23 23:10:13,532 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:10:13,533 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:10:13,534 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:10:13,535 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:10:13,536 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:10:13,559 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:10:13,560 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:10:13,563 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:10:13,565 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:10:14,644 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:10:14,649 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:10:14,779 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:10:14,895 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 23:10:14,917 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_b9ba1fcd-9dc2-4ce2-a30f-451cd2670703/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_c_str_harness-1.i[4497,4510] [2024-11-23 23:10:14,917 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_b9ba1fcd-9dc2-4ce2-a30f-451cd2670703/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_c_str_harness-1.i[4557,4570] [2024-11-23 23:10:14,983 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:10:14,984 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:10:14,985 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:10:14,985 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:10:14,986 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:10:15,000 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:10:15,000 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:10:15,002 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:10:15,004 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:10:15,233 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8269] [2024-11-23 23:10:15,236 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:10:15,236 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 23:10:15,259 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8755-8766] [2024-11-23 23:10:15,282 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:10:15,638 INFO L204 MainTranslator]: Completed translation [2024-11-23 23:10:15,639 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:10:15 WrapperNode [2024-11-23 23:10:15,639 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 23:10:15,641 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 23:10:15,641 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 23:10:15,641 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 23:10:15,651 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:10:15" (1/1) ... [2024-11-23 23:10:15,783 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:10:15" (1/1) ... [2024-11-23 23:10:15,863 INFO L138 Inliner]: procedures = 679, calls = 2616, calls flagged for inlining = 59, calls inlined = 6, statements flattened = 831 [2024-11-23 23:10:15,864 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 23:10:15,864 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 23:10:15,864 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 23:10:15,865 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 23:10:15,888 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:10:15" (1/1) ... [2024-11-23 23:10:15,888 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:10:15" (1/1) ... [2024-11-23 23:10:15,903 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:10:15" (1/1) ... [2024-11-23 23:10:15,992 INFO L175 MemorySlicer]: Split 535 memory accesses to 5 slices as follows [2, 257, 241, 30, 5]. 48 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 0, 6, 4, 5]. The 493 writes are split as follows [0, 257, 232, 4, 0]. [2024-11-23 23:10:15,992 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:10:15" (1/1) ... [2024-11-23 23:10:15,993 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:10:15" (1/1) ... [2024-11-23 23:10:16,053 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:10:15" (1/1) ... [2024-11-23 23:10:16,058 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:10:15" (1/1) ... [2024-11-23 23:10:16,066 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:10:15" (1/1) ... [2024-11-23 23:10:16,077 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:10:15" (1/1) ... [2024-11-23 23:10:16,085 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:10:15" (1/1) ... [2024-11-23 23:10:16,102 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 23:10:16,103 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 23:10:16,103 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 23:10:16,103 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 23:10:16,104 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:10:15" (1/1) ... [2024-11-23 23:10:16,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:10:16,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9ba1fcd-9dc2-4ce2-a30f-451cd2670703/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:10:16,150 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9ba1fcd-9dc2-4ce2-a30f-451cd2670703/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 23:10:16,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9ba1fcd-9dc2-4ce2-a30f-451cd2670703/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 23:10:16,188 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2024-11-23 23:10:16,188 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2024-11-23 23:10:16,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-23 23:10:16,189 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-23 23:10:16,189 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-23 23:10:16,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-23 23:10:16,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-23 23:10:16,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-23 23:10:16,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-23 23:10:16,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-23 23:10:16,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-23 23:10:16,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-23 23:10:16,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-23 23:10:16,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-23 23:10:16,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-23 23:10:16,190 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-23 23:10:16,190 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-23 23:10:16,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-23 23:10:16,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 23:10:16,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-23 23:10:16,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-23 23:10:16,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-23 23:10:16,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-23 23:10:16,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-23 23:10:16,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 23:10:16,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 23:10:16,191 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-23 23:10:16,192 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-23 23:10:16,192 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2024-11-23 23:10:16,192 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2024-11-23 23:10:16,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-23 23:10:16,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-23 23:10:16,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-23 23:10:16,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-23 23:10:16,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-23 23:10:16,192 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-23 23:10:16,192 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-23 23:10:16,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-23 23:10:16,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-23 23:10:16,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-23 23:10:16,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-23 23:10:16,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-23 23:10:16,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-23 23:10:16,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-23 23:10:16,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-23 23:10:16,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-23 23:10:16,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-23 23:10:16,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-23 23:10:16,194 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-23 23:10:16,194 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-23 23:10:16,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-23 23:10:16,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-23 23:10:16,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-23 23:10:16,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-23 23:10:16,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-23 23:10:16,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 23:10:16,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 23:10:16,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-23 23:10:16,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-23 23:10:16,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-23 23:10:16,619 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 23:10:16,622 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 23:10:26,854 INFO L? ?]: Removed 76 outVars from TransFormulas that were not future-live. [2024-11-23 23:10:26,854 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 23:10:26,876 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 23:10:26,876 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-23 23:10:26,877 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:10:26 BoogieIcfgContainer [2024-11-23 23:10:26,877 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 23:10:26,880 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 23:10:26,880 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 23:10:26,886 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 23:10:26,887 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:10:11" (1/3) ... [2024-11-23 23:10:26,890 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b3418b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:10:26, skipping insertion in model container [2024-11-23 23:10:26,890 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:10:15" (2/3) ... [2024-11-23 23:10:26,891 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b3418b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:10:26, skipping insertion in model container [2024-11-23 23:10:26,891 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:10:26" (3/3) ... [2024-11-23 23:10:26,893 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_from_c_str_harness-1.i [2024-11-23 23:10:26,913 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 23:10:26,917 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_byte_buf_from_c_str_harness-1.i that has 8 procedures, 92 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-23 23:10:27,002 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 23:10:27,018 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;@7267a5b4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 23:10:27,018 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 23:10:27,023 INFO L276 IsEmpty]: Start isEmpty. Operand has 92 states, 62 states have (on average 1.2258064516129032) internal successors, (76), 63 states have internal predecessors, (76), 21 states have call successors, (21), 7 states have call predecessors, (21), 7 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-23 23:10:27,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-23 23:10:27,033 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:10:27,034 INFO L218 NwaCegarLoop]: trace histogram [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 23:10:27,035 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:10:27,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:10:27,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1814788681, now seen corresponding path program 1 times [2024-11-23 23:10:27,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:10:27,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759560362] [2024-11-23 23:10:27,057 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:10:27,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:12:19,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:12:23,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:12:23,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:12:23,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759560362] [2024-11-23 23:12:23,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759560362] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:12:23,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:12:23,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:12:23,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638170580] [2024-11-23 23:12:23,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:12:23,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:12:23,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:12:23,726 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:12:23,726 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:12:23,729 INFO L87 Difference]: Start difference. First operand has 92 states, 62 states have (on average 1.2258064516129032) internal successors, (76), 63 states have internal predecessors, (76), 21 states have call successors, (21), 7 states have call predecessors, (21), 7 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-23 23:12:24,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:12:24,081 INFO L93 Difference]: Finished difference Result 177 states and 242 transitions. [2024-11-23 23:12:24,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:12:24,084 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2024-11-23 23:12:24,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:12:24,094 INFO L225 Difference]: With dead ends: 177 [2024-11-23 23:12:24,095 INFO L226 Difference]: Without dead ends: 87 [2024-11-23 23:12:24,099 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:12:24,102 INFO L435 NwaCegarLoop]: 111 mSDtfsCounter, 0 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:12:24,103 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 431 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 23:12:24,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-23 23:12:24,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2024-11-23 23:12:24,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 57 states have (on average 1.1929824561403508) internal successors, (68), 60 states have internal predecessors, (68), 21 states have call successors, (21), 7 states have call predecessors, (21), 8 states have return successors, (20), 19 states have call predecessors, (20), 19 states have call successors, (20) [2024-11-23 23:12:24,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 109 transitions. [2024-11-23 23:12:24,160 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 109 transitions. Word has length 23 [2024-11-23 23:12:24,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:12:24,160 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 109 transitions. [2024-11-23 23:12:24,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-23 23:12:24,161 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 109 transitions. [2024-11-23 23:12:24,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-23 23:12:24,163 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:12:24,163 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 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 23:12:24,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 23:12:24,164 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:12:24,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:12:24,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1149269628, now seen corresponding path program 1 times [2024-11-23 23:12:24,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:12:24,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906748777] [2024-11-23 23:12:24,165 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:12:24,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:14:18,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:14:20,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:14:20,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:14:20,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906748777] [2024-11-23 23:14:20,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906748777] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:14:20,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:14:20,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:14:20,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103050985] [2024-11-23 23:14:20,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:14:20,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:14:20,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:14:20,182 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:14:20,182 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:14:20,182 INFO L87 Difference]: Start difference. First operand 87 states and 109 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-23 23:14:20,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:14:20,324 INFO L93 Difference]: Finished difference Result 150 states and 191 transitions. [2024-11-23 23:14:20,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:14:20,325 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2024-11-23 23:14:20,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:14:20,327 INFO L225 Difference]: With dead ends: 150 [2024-11-23 23:14:20,327 INFO L226 Difference]: Without dead ends: 90 [2024-11-23 23:14:20,328 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 23:14:20,329 INFO L435 NwaCegarLoop]: 103 mSDtfsCounter, 1 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:14:20,330 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 303 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:14:20,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-23 23:14:20,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2024-11-23 23:14:20,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 59 states have (on average 1.1864406779661016) internal successors, (70), 62 states have internal predecessors, (70), 21 states have call successors, (21), 7 states have call predecessors, (21), 8 states have return successors, (20), 19 states have call predecessors, (20), 19 states have call successors, (20) [2024-11-23 23:14:20,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 111 transitions. [2024-11-23 23:14:20,346 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 111 transitions. Word has length 29 [2024-11-23 23:14:20,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:14:20,346 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 111 transitions. [2024-11-23 23:14:20,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-23 23:14:20,347 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 111 transitions. [2024-11-23 23:14:20,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-23 23:14:20,348 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:14:20,348 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 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 23:14:20,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 23:14:20,348 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:14:20,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:14:20,349 INFO L85 PathProgramCache]: Analyzing trace with hash -448205050, now seen corresponding path program 1 times [2024-11-23 23:14:20,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:14:20,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200569186] [2024-11-23 23:14:20,349 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:14:20,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:16:17,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:16:19,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:16:19,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:16:19,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200569186] [2024-11-23 23:16:19,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200569186] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:16:19,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:16:19,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:16:19,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651572954] [2024-11-23 23:16:19,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:16:19,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:16:19,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:16:19,133 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:16:19,133 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:16:19,134 INFO L87 Difference]: Start difference. First operand 89 states and 111 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-23 23:16:19,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:16:19,281 INFO L93 Difference]: Finished difference Result 153 states and 194 transitions. [2024-11-23 23:16:19,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:16:19,282 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2024-11-23 23:16:19,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:16:19,283 INFO L225 Difference]: With dead ends: 153 [2024-11-23 23:16:19,284 INFO L226 Difference]: Without dead ends: 91 [2024-11-23 23:16:19,284 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 23:16:19,285 INFO L435 NwaCegarLoop]: 104 mSDtfsCounter, 0 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:16:19,286 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 304 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:16:19,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-23 23:16:19,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2024-11-23 23:16:19,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 61 states have (on average 1.180327868852459) internal successors, (72), 64 states have internal predecessors, (72), 21 states have call successors, (21), 7 states have call predecessors, (21), 8 states have return successors, (20), 19 states have call predecessors, (20), 19 states have call successors, (20) [2024-11-23 23:16:19,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 113 transitions. [2024-11-23 23:16:19,300 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 113 transitions. Word has length 29 [2024-11-23 23:16:19,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:16:19,300 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 113 transitions. [2024-11-23 23:16:19,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-23 23:16:19,300 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 113 transitions. [2024-11-23 23:16:19,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-23 23:16:19,301 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:16:19,302 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 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 23:16:19,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 23:16:19,302 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:16:19,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:16:19,303 INFO L85 PathProgramCache]: Analyzing trace with hash -562463614, now seen corresponding path program 1 times [2024-11-23 23:16:19,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:16:19,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620769201] [2024-11-23 23:16:19,303 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:16:19,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:18:35,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:18:42,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:18:42,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:18:42,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620769201] [2024-11-23 23:18:42,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620769201] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:18:42,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:18:42,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 23:18:42,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347500825] [2024-11-23 23:18:42,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:18:42,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 23:18:42,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:18:42,092 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 23:18:42,092 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:18:42,092 INFO L87 Difference]: Start difference. First operand 91 states and 113 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-23 23:18:42,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:18:42,667 INFO L93 Difference]: Finished difference Result 103 states and 126 transitions. [2024-11-23 23:18:42,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 23:18:42,668 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2024-11-23 23:18:42,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:18:42,670 INFO L225 Difference]: With dead ends: 103 [2024-11-23 23:18:42,670 INFO L226 Difference]: Without dead ends: 101 [2024-11-23 23:18:42,671 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 23:18:42,672 INFO L435 NwaCegarLoop]: 104 mSDtfsCounter, 3 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:18:42,672 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 705 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-23 23:18:42,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-23 23:18:42,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 100. [2024-11-23 23:18:42,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 67 states have (on average 1.164179104477612) internal successors, (78), 71 states have internal predecessors, (78), 22 states have call successors, (22), 8 states have call predecessors, (22), 10 states have return successors, (23), 20 states have call predecessors, (23), 20 states have call successors, (23) [2024-11-23 23:18:42,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 123 transitions. [2024-11-23 23:18:42,689 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 123 transitions. Word has length 29 [2024-11-23 23:18:42,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:18:42,689 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 123 transitions. [2024-11-23 23:18:42,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-23 23:18:42,689 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 123 transitions. [2024-11-23 23:18:42,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-23 23:18:42,691 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:18:42,691 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:18:42,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 23:18:42,691 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:18:42,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:18:42,692 INFO L85 PathProgramCache]: Analyzing trace with hash -129003826, now seen corresponding path program 1 times [2024-11-23 23:18:42,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:18:42,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015447625] [2024-11-23 23:18:42,693 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:18:42,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:20:42,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:20:53,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:20:53,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:20:53,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015447625] [2024-11-23 23:20:53,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015447625] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:20:53,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:20:53,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 23:20:53,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744578033] [2024-11-23 23:20:53,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:20:53,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 23:20:53,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:20:53,550 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 23:20:53,550 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:20:53,550 INFO L87 Difference]: Start difference. First operand 100 states and 123 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-23 23:20:54,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:20:54,959 INFO L93 Difference]: Finished difference Result 188 states and 237 transitions. [2024-11-23 23:20:54,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 23:20:54,960 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2024-11-23 23:20:54,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:20:54,962 INFO L225 Difference]: With dead ends: 188 [2024-11-23 23:20:54,963 INFO L226 Difference]: Without dead ends: 120 [2024-11-23 23:20:54,964 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:20:54,965 INFO L435 NwaCegarLoop]: 95 mSDtfsCounter, 19 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:20:54,966 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 588 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-23 23:20:54,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-11-23 23:20:54,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 111. [2024-11-23 23:20:54,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 75 states have (on average 1.16) internal successors, (87), 81 states have internal predecessors, (87), 24 states have call successors, (24), 8 states have call predecessors, (24), 11 states have return successors, (28), 21 states have call predecessors, (28), 22 states have call successors, (28) [2024-11-23 23:20:54,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 139 transitions. [2024-11-23 23:20:54,987 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 139 transitions. Word has length 33 [2024-11-23 23:20:54,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:20:54,987 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 139 transitions. [2024-11-23 23:20:54,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-23 23:20:54,988 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 139 transitions. [2024-11-23 23:20:54,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-23 23:20:54,989 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:20:54,989 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:20:54,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 23:20:54,990 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:20:54,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:20:54,990 INFO L85 PathProgramCache]: Analyzing trace with hash 129161612, now seen corresponding path program 1 times [2024-11-23 23:20:54,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:20:54,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073615678] [2024-11-23 23:20:54,991 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:20:54,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:22:42,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:22:46,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:22:46,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:22:46,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073615678] [2024-11-23 23:22:46,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073615678] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:22:46,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:22:46,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:22:46,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678613100] [2024-11-23 23:22:46,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:22:46,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:22:46,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:22:46,539 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:22:46,539 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:22:46,539 INFO L87 Difference]: Start difference. First operand 111 states and 139 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-23 23:22:47,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:22:47,076 INFO L93 Difference]: Finished difference Result 203 states and 257 transitions. [2024-11-23 23:22:47,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:22:47,076 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 33 [2024-11-23 23:22:47,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:22:47,079 INFO L225 Difference]: With dead ends: 203 [2024-11-23 23:22:47,079 INFO L226 Difference]: Without dead ends: 128 [2024-11-23 23:22:47,080 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:22:47,085 INFO L435 NwaCegarLoop]: 105 mSDtfsCounter, 11 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:22:47,085 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 380 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-23 23:22:47,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-23 23:22:47,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 114. [2024-11-23 23:22:47,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 78 states have (on average 1.1538461538461537) internal successors, (90), 84 states have internal predecessors, (90), 24 states have call successors, (24), 8 states have call predecessors, (24), 11 states have return successors, (28), 21 states have call predecessors, (28), 22 states have call successors, (28) [2024-11-23 23:22:47,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 142 transitions. [2024-11-23 23:22:47,118 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 142 transitions. Word has length 33 [2024-11-23 23:22:47,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:22:47,119 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 142 transitions. [2024-11-23 23:22:47,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-23 23:22:47,119 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 142 transitions. [2024-11-23 23:22:47,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-23 23:22:47,124 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:22:47,125 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:22:47,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 23:22:47,125 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:22:47,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:22:47,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1297594104, now seen corresponding path program 1 times [2024-11-23 23:22:47,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:22:47,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093566389] [2024-11-23 23:22:47,126 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:22:47,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:24:26,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:24:37,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:24:37,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:24:37,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093566389] [2024-11-23 23:24:37,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093566389] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:24:37,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:24:37,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-23 23:24:37,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718412175] [2024-11-23 23:24:37,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:24:37,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 23:24:37,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:24:37,949 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 23:24:37,949 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:24:37,949 INFO L87 Difference]: Start difference. First operand 114 states and 142 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 9 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-23 23:24:40,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:24:40,838 INFO L93 Difference]: Finished difference Result 224 states and 282 transitions. [2024-11-23 23:24:40,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 23:24:40,839 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 9 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 33 [2024-11-23 23:24:40,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:24:40,841 INFO L225 Difference]: With dead ends: 224 [2024-11-23 23:24:40,841 INFO L226 Difference]: Without dead ends: 146 [2024-11-23 23:24:40,842 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-11-23 23:24:40,843 INFO L435 NwaCegarLoop]: 100 mSDtfsCounter, 43 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:24:40,843 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 722 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-23 23:24:40,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-11-23 23:24:40,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 119. [2024-11-23 23:24:40,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 83 states have (on average 1.180722891566265) internal successors, (98), 89 states have internal predecessors, (98), 24 states have call successors, (24), 8 states have call predecessors, (24), 11 states have return successors, (28), 21 states have call predecessors, (28), 22 states have call successors, (28) [2024-11-23 23:24:40,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 150 transitions. [2024-11-23 23:24:40,865 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 150 transitions. Word has length 33 [2024-11-23 23:24:40,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:24:40,866 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 150 transitions. [2024-11-23 23:24:40,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 9 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-23 23:24:40,866 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 150 transitions. [2024-11-23 23:24:40,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-23 23:24:40,868 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:24:40,868 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:24:40,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 23:24:40,868 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:24:40,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:24:40,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1717509514, now seen corresponding path program 1 times [2024-11-23 23:24:40,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:24:40,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369235798] [2024-11-23 23:24:40,869 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:24:40,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms