./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f733493-ddde-45e2-a201-b9cdb70e9805/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f733493-ddde-45e2-a201-b9cdb70e9805/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f733493-ddde-45e2-a201-b9cdb70e9805/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f733493-ddde-45e2-a201-b9cdb70e9805/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f733493-ddde-45e2-a201-b9cdb70e9805/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f733493-ddde-45e2-a201-b9cdb70e9805/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 5c58e2434ae79fdf5f8dceab88ea2b6ad3f1a1a8bb44e2d930eaf759f64b3d29 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:47:23,510 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:47:23,570 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f733493-ddde-45e2-a201-b9cdb70e9805/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-28 04:47:23,576 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:47:23,576 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:47:23,624 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:47:23,625 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:47:23,625 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:47:23,626 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:47:23,626 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:47:23,626 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:47:23,626 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:47:23,626 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:47:23,626 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:47:23,626 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:47:23,627 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:47:23,628 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:47:23,628 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:47:23,629 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:47:23,629 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:47:23,629 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:47:23,629 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:47:23,629 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:47:23,629 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:47:23,630 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:47:23,630 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:47:23,630 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:47:23,630 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:47:23,630 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:47:23,630 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:47:23,631 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:47:23,631 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:47:23,631 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:47:23,631 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:47:23,631 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:47:23,631 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:47:23,631 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:47:23,632 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:47:23,632 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:47:23,632 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:47:23,632 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:47:23,632 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:47:23,632 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:47:23,632 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:47:23,633 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:47:23,633 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_4f733493-ddde-45e2-a201-b9cdb70e9805/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c58e2434ae79fdf5f8dceab88ea2b6ad3f1a1a8bb44e2d930eaf759f64b3d29 [2024-11-28 04:47:23,940 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:47:23,948 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:47:23,951 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:47:23,952 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:47:23,953 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:47:23,954 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f733493-ddde-45e2-a201-b9cdb70e9805/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_harness.i [2024-11-28 04:47:26,873 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f733493-ddde-45e2-a201-b9cdb70e9805/bin/uautomizer-verify-aQ6SnzHsRB/data/ac4b83c72/0fc2a59936f641ac84d810bb858a8a85/FLAGae1bc6e84 [2024-11-28 04:47:27,526 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:47:27,527 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f733493-ddde-45e2-a201-b9cdb70e9805/sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_harness.i [2024-11-28 04:47:27,578 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f733493-ddde-45e2-a201-b9cdb70e9805/bin/uautomizer-verify-aQ6SnzHsRB/data/ac4b83c72/0fc2a59936f641ac84d810bb858a8a85/FLAGae1bc6e84 [2024-11-28 04:47:27,594 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f733493-ddde-45e2-a201-b9cdb70e9805/bin/uautomizer-verify-aQ6SnzHsRB/data/ac4b83c72/0fc2a59936f641ac84d810bb858a8a85 [2024-11-28 04:47:27,596 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:47:27,597 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:47:27,599 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:47:27,599 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:47:27,605 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:47:27,605 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:47:27" (1/1) ... [2024-11-28 04:47:27,608 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31bff5d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:27, skipping insertion in model container [2024-11-28 04:47:27,608 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:47:27" (1/1) ... [2024-11-28 04:47:27,719 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:47:28,013 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_4f733493-ddde-45e2-a201-b9cdb70e9805/sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_harness.i[4499,4512] [2024-11-28 04:47:28,020 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_4f733493-ddde-45e2-a201-b9cdb70e9805/sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_harness.i[4559,4572] [2024-11-28 04:47:29,112 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:47:29,116 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:47:29,117 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:47:29,119 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:47:29,121 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:47:29,150 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:47:29,150 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:47:29,152 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:47:29,153 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:47:30,017 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:47:30,017 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:47:30,057 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:47:30,117 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:47:30,182 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_4f733493-ddde-45e2-a201-b9cdb70e9805/sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_harness.i[4499,4512] [2024-11-28 04:47:30,183 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_4f733493-ddde-45e2-a201-b9cdb70e9805/sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_harness.i[4559,4572] [2024-11-28 04:47:30,237 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:47:30,238 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:47:30,238 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:47:30,238 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:47:30,239 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:47:30,246 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:47:30,247 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:47:30,248 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:47:30,248 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:47:30,400 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8588] [2024-11-28 04:47:30,402 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:47:30,402 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:47:30,426 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:47:30,721 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:47:30,722 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:30 WrapperNode [2024-11-28 04:47:30,722 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:47:30,724 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:47:30,724 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:47:30,724 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:47:30,738 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:30" (1/1) ... [2024-11-28 04:47:30,824 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:30" (1/1) ... [2024-11-28 04:47:30,869 INFO L138 Inliner]: procedures = 670, calls = 2270, calls flagged for inlining = 57, calls inlined = 5, statements flattened = 373 [2024-11-28 04:47:30,869 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:47:30,870 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:47:30,870 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:47:30,870 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:47:30,879 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:30" (1/1) ... [2024-11-28 04:47:30,880 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:30" (1/1) ... [2024-11-28 04:47:30,884 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:30" (1/1) ... [2024-11-28 04:47:30,955 INFO L175 MemorySlicer]: Split 278 memory accesses to 4 slices as follows [2, 259, 5, 12]. 93 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 0, 5, 0]. The 260 writes are split as follows [0, 257, 0, 3]. [2024-11-28 04:47:30,955 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:30" (1/1) ... [2024-11-28 04:47:30,958 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:30" (1/1) ... [2024-11-28 04:47:30,991 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:30" (1/1) ... [2024-11-28 04:47:30,992 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:30" (1/1) ... [2024-11-28 04:47:31,003 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:30" (1/1) ... [2024-11-28 04:47:31,008 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:30" (1/1) ... [2024-11-28 04:47:31,014 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:30" (1/1) ... [2024-11-28 04:47:31,031 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:47:31,031 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:47:31,032 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:47:31,032 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:47:31,033 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:30" (1/1) ... [2024-11-28 04:47:31,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:47:31,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f733493-ddde-45e2-a201-b9cdb70e9805/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:47:31,071 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f733493-ddde-45e2-a201-b9cdb70e9805/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:47:31,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f733493-ddde-45e2-a201-b9cdb70e9805/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:47:31,106 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2024-11-28 04:47:31,106 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2024-11-28 04:47:31,107 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq_ignore_case [2024-11-28 04:47:31,108 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq_ignore_case [2024-11-28 04:47:31,108 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_string_is_allocated_bounded_length [2024-11-28 04:47:31,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_string_is_allocated_bounded_length [2024-11-28 04:47:31,108 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-28 04:47:31,108 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-28 04:47:31,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-28 04:47:31,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-28 04:47:31,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-28 04:47:31,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-28 04:47:31,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 04:47:31,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 04:47:31,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 04:47:31,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 04:47:31,109 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 04:47:31,109 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 04:47:31,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 04:47:31,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:47:31,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 04:47:31,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 04:47:31,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-28 04:47:31,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-28 04:47:31,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:47:31,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:47:31,109 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-28 04:47:31,109 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-28 04:47:31,109 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 04:47:31,110 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 04:47:31,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-28 04:47:31,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-28 04:47:31,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-28 04:47:31,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-28 04:47:31,112 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-11-28 04:47:31,112 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-11-28 04:47:31,113 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-28 04:47:31,113 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-28 04:47:31,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 04:47:31,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 04:47:31,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 04:47:31,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 04:47:31,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:47:31,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:47:31,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 04:47:31,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 04:47:31,406 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:47:31,408 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:47:39,024 INFO L? ?]: Removed 68 outVars from TransFormulas that were not future-live. [2024-11-28 04:47:39,024 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:47:39,034 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:47:39,034 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-28 04:47:39,035 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:47:39 BoogieIcfgContainer [2024-11-28 04:47:39,035 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:47:39,037 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:47:39,037 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:47:39,042 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:47:39,042 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:47:27" (1/3) ... [2024-11-28 04:47:39,043 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b2bbb08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:47:39, skipping insertion in model container [2024-11-28 04:47:39,043 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:30" (2/3) ... [2024-11-28 04:47:39,043 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b2bbb08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:47:39, skipping insertion in model container [2024-11-28 04:47:39,044 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:47:39" (3/3) ... [2024-11-28 04:47:39,045 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_string_eq_ignore_case_harness.i [2024-11-28 04:47:39,060 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:47:39,062 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_string_eq_ignore_case_harness.i that has 10 procedures, 98 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 04:47:39,127 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:47:39,143 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;@1b8a7d9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:47:39,144 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 04:47:39,149 INFO L276 IsEmpty]: Start isEmpty. Operand has 98 states, 64 states have (on average 1.265625) internal successors, (81), 65 states have internal predecessors, (81), 23 states have call successors, (23), 9 states have call predecessors, (23), 9 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-28 04:47:39,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-28 04:47:39,160 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:47:39,160 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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] [2024-11-28 04:47:39,161 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:47:39,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:47:39,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1426397344, now seen corresponding path program 1 times [2024-11-28 04:47:39,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:47:39,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933872190] [2024-11-28 04:47:39,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:47:39,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:48:45,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:48:46,560 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-28 04:48:46,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:48:46,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933872190] [2024-11-28 04:48:46,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933872190] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:48:46,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195319886] [2024-11-28 04:48:46,561 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:48:46,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:48:46,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f733493-ddde-45e2-a201-b9cdb70e9805/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:48:46,565 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f733493-ddde-45e2-a201-b9cdb70e9805/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:48:46,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f733493-ddde-45e2-a201-b9cdb70e9805/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:49:55,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:49:55,315 INFO L256 TraceCheckSpWp]: Trace formula consists of 3776 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 04:49:55,326 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:49:55,337 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-28 04:49:55,337 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:49:55,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195319886] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:49:55,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:49:55,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 04:49:55,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853540307] [2024-11-28 04:49:55,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:49:55,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 04:49:55,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:49:55,362 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 04:49:55,362 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:49:55,364 INFO L87 Difference]: Start difference. First operand has 98 states, 64 states have (on average 1.265625) internal successors, (81), 65 states have internal predecessors, (81), 23 states have call successors, (23), 9 states have call predecessors, (23), 9 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-28 04:49:55,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:49:55,394 INFO L93 Difference]: Finished difference Result 191 states and 259 transitions. [2024-11-28 04:49:55,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 04:49:55,396 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 48 [2024-11-28 04:49:55,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:49:55,403 INFO L225 Difference]: With dead ends: 191 [2024-11-28 04:49:55,403 INFO L226 Difference]: Without dead ends: 93 [2024-11-28 04:49:55,407 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:49:55,412 INFO L435 NwaCegarLoop]: 124 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, 124 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 [2024-11-28 04:49:55,416 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:49:55,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-28 04:49:55,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2024-11-28 04:49:55,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 60 states have (on average 1.2166666666666666) internal successors, (73), 61 states have internal predecessors, (73), 23 states have call successors, (23), 9 states have call predecessors, (23), 9 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-28 04:49:55,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 118 transitions. [2024-11-28 04:49:55,475 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 118 transitions. Word has length 48 [2024-11-28 04:49:55,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:49:55,477 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 118 transitions. [2024-11-28 04:49:55,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-28 04:49:55,478 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 118 transitions. [2024-11-28 04:49:55,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-28 04:49:55,482 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:49:55,483 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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] [2024-11-28 04:49:55,506 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f733493-ddde-45e2-a201-b9cdb70e9805/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 04:49:55,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f733493-ddde-45e2-a201-b9cdb70e9805/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:49:55,684 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:49:55,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:49:55,685 INFO L85 PathProgramCache]: Analyzing trace with hash -200506784, now seen corresponding path program 1 times [2024-11-28 04:49:55,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:49:55,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713031915] [2024-11-28 04:49:55,685 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:49:55,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:51:06,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:51:08,143 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-28 04:51:08,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:51:08,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713031915] [2024-11-28 04:51:08,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713031915] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:51:08,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:51:08,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:51:08,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895408923] [2024-11-28 04:51:08,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:51:08,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:51:08,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:51:08,147 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:51:08,148 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:51:08,148 INFO L87 Difference]: Start difference. First operand 93 states and 118 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-28 04:51:08,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:51:08,338 INFO L93 Difference]: Finished difference Result 137 states and 179 transitions. [2024-11-28 04:51:08,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:51:08,338 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 48 [2024-11-28 04:51:08,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:51:08,340 INFO L225 Difference]: With dead ends: 137 [2024-11-28 04:51:08,340 INFO L226 Difference]: Without dead ends: 93 [2024-11-28 04:51:08,341 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 [2024-11-28 04:51:08,341 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 10 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:51:08,343 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 339 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:51:08,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-28 04:51:08,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2024-11-28 04:51:08,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 60 states have (on average 1.2) internal successors, (72), 61 states have internal predecessors, (72), 23 states have call successors, (23), 9 states have call predecessors, (23), 9 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-28 04:51:08,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 117 transitions. [2024-11-28 04:51:08,356 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 117 transitions. Word has length 48 [2024-11-28 04:51:08,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:51:08,357 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 117 transitions. [2024-11-28 04:51:08,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-28 04:51:08,357 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 117 transitions. [2024-11-28 04:51:08,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-28 04:51:08,359 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:51:08,360 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:51:08,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:51:08,360 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:51:08,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:51:08,361 INFO L85 PathProgramCache]: Analyzing trace with hash 551045566, now seen corresponding path program 1 times [2024-11-28 04:51:08,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:51:08,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171744449] [2024-11-28 04:51:08,361 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:51:08,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:52:25,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:52:28,901 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-28 04:52:28,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:52:28,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171744449] [2024-11-28 04:52:28,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171744449] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:52:28,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:52:28,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-28 04:52:28,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766523984] [2024-11-28 04:52:28,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:52:28,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 04:52:28,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:52:28,904 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 04:52:28,905 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:52:28,905 INFO L87 Difference]: Start difference. First operand 93 states and 117 transitions. Second operand has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 9 states have internal predecessors, (42), 4 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-28 04:52:29,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:52:29,718 INFO L93 Difference]: Finished difference Result 140 states and 178 transitions. [2024-11-28 04:52:29,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 04:52:29,719 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 9 states have internal predecessors, (42), 4 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) Word has length 82 [2024-11-28 04:52:29,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:52:29,721 INFO L225 Difference]: With dead ends: 140 [2024-11-28 04:52:29,721 INFO L226 Difference]: Without dead ends: 93 [2024-11-28 04:52:29,722 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:52:29,723 INFO L435 NwaCegarLoop]: 106 mSDtfsCounter, 20 mSDsluCounter, 907 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:52:29,723 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 1013 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 04:52:29,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-28 04:52:29,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2024-11-28 04:52:29,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 60 states have (on average 1.1833333333333333) internal successors, (71), 61 states have internal predecessors, (71), 23 states have call successors, (23), 9 states have call predecessors, (23), 9 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-28 04:52:29,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 116 transitions. [2024-11-28 04:52:29,734 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 116 transitions. Word has length 82 [2024-11-28 04:52:29,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:52:29,735 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 116 transitions. [2024-11-28 04:52:29,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 9 states have internal predecessors, (42), 4 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-28 04:52:29,735 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 116 transitions. [2024-11-28 04:52:29,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-28 04:52:29,738 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:52:29,738 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:52:29,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:52:29,739 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:52:29,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:52:29,739 INFO L85 PathProgramCache]: Analyzing trace with hash 164624321, now seen corresponding path program 1 times [2024-11-28 04:52:29,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:52:29,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300728790] [2024-11-28 04:52:29,740 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:52:29,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:53:42,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:53:46,314 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-28 04:53:46,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:53:46,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300728790] [2024-11-28 04:53:46,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300728790] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:53:46,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:53:46,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-28 04:53:46,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836313846] [2024-11-28 04:53:46,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:53:46,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 04:53:46,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:53:46,316 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 04:53:46,316 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:53:46,317 INFO L87 Difference]: Start difference. First operand 93 states and 116 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 11 states have internal predecessors, (43), 6 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 8 states have call predecessors, (13), 6 states have call successors, (13) [2024-11-28 04:53:47,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:53:47,884 INFO L93 Difference]: Finished difference Result 123 states and 154 transitions. [2024-11-28 04:53:47,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 04:53:47,884 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 11 states have internal predecessors, (43), 6 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 8 states have call predecessors, (13), 6 states have call successors, (13) Word has length 91 [2024-11-28 04:53:47,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:53:47,886 INFO L225 Difference]: With dead ends: 123 [2024-11-28 04:53:47,886 INFO L226 Difference]: Without dead ends: 101 [2024-11-28 04:53:47,886 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2024-11-28 04:53:47,887 INFO L435 NwaCegarLoop]: 102 mSDtfsCounter, 40 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:53:47,887 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 1153 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-28 04:53:47,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-28 04:53:47,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 96. [2024-11-28 04:53:47,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 62 states have (on average 1.1774193548387097) internal successors, (73), 63 states have internal predecessors, (73), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-28 04:53:47,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 120 transitions. [2024-11-28 04:53:47,901 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 120 transitions. Word has length 91 [2024-11-28 04:53:47,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:53:47,901 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 120 transitions. [2024-11-28 04:53:47,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 11 states have internal predecessors, (43), 6 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 8 states have call predecessors, (13), 6 states have call successors, (13) [2024-11-28 04:53:47,902 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 120 transitions. [2024-11-28 04:53:47,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-28 04:53:47,903 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:53:47,904 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:53:47,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:53:47,904 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:53:47,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:53:47,905 INFO L85 PathProgramCache]: Analyzing trace with hash 21122557, now seen corresponding path program 1 times [2024-11-28 04:53:47,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:53:47,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901038635] [2024-11-28 04:53:47,905 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:53:47,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:54:56,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:55:00,357 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-28 04:55:00,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:55:00,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901038635] [2024-11-28 04:55:00,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901038635] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:55:00,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:55:00,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-28 04:55:00,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366582610] [2024-11-28 04:55:00,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:55:00,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 04:55:00,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:55:00,359 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 04:55:00,359 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:55:00,359 INFO L87 Difference]: Start difference. First operand 96 states and 120 transitions. Second operand has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 10 states have internal predecessors, (44), 5 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 7 states have call predecessors, (13), 5 states have call successors, (13) [2024-11-28 04:55:01,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:55:01,614 INFO L93 Difference]: Finished difference Result 119 states and 147 transitions. [2024-11-28 04:55:01,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 04:55:01,614 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 10 states have internal predecessors, (44), 5 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 7 states have call predecessors, (13), 5 states have call successors, (13) Word has length 92 [2024-11-28 04:55:01,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:55:01,616 INFO L225 Difference]: With dead ends: 119 [2024-11-28 04:55:01,616 INFO L226 Difference]: Without dead ends: 97 [2024-11-28 04:55:01,617 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-11-28 04:55:01,617 INFO L435 NwaCegarLoop]: 103 mSDtfsCounter, 25 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 1071 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:55:01,618 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 1071 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 04:55:01,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-28 04:55:01,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 96. [2024-11-28 04:55:01,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 62 states have (on average 1.1612903225806452) internal successors, (72), 63 states have internal predecessors, (72), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-28 04:55:01,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 119 transitions. [2024-11-28 04:55:01,629 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 119 transitions. Word has length 92 [2024-11-28 04:55:01,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:55:01,630 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 119 transitions. [2024-11-28 04:55:01,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 10 states have internal predecessors, (44), 5 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 7 states have call predecessors, (13), 5 states have call successors, (13) [2024-11-28 04:55:01,631 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 119 transitions. [2024-11-28 04:55:01,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-28 04:55:01,634 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:55:01,635 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:55:01,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 04:55:01,635 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:55:01,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:55:01,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1947342738, now seen corresponding path program 1 times [2024-11-28 04:55:01,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:55:01,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131481812] [2024-11-28 04:55:01,637 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:55:01,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:56:38,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:23,118 WARN L286 SmtUtils]: Spent 56.67s on a formula simplification. DAG size of input: 167 DAG size of output: 35 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 05:00:33,418 WARN L286 SmtUtils]: Spent 24.43s on a formula simplification. DAG size of input: 61 DAG size of output: 39 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 05:00:37,622 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-28 05:00:37,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:00:37,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131481812] [2024-11-28 05:00:37,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131481812] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:00:37,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789284806] [2024-11-28 05:00:37,623 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:37,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:00:37,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f733493-ddde-45e2-a201-b9cdb70e9805/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:00:37,630 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f733493-ddde-45e2-a201-b9cdb70e9805/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:00:37,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f733493-ddde-45e2-a201-b9cdb70e9805/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process