./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--realtek--atp.ko-entry_point.cil.out.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_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/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_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--realtek--atp.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/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_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/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 b615ef3e9ec848bbbdbcac9993fc5d609594ef1caaa279a862c4f038e6ec482e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 23:41:18,097 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 23:41:18,194 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-23 23:41:18,205 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 23:41:18,205 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 23:41:18,240 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 23:41:18,241 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 23:41:18,242 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 23:41:18,242 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 23:41:18,242 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 23:41:18,243 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 23:41:18,244 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 23:41:18,245 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 23:41:18,245 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 23:41:18,245 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 23:41:18,246 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 23:41:18,246 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 23:41:18,246 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 23:41:18,246 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 23:41:18,247 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 23:41:18,247 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 23:41:18,247 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 23:41:18,247 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 23:41:18,247 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 23:41:18,247 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 23:41:18,247 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 23:41:18,247 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:41:18,248 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:41:18,248 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:41:18,248 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:41:18,248 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 23:41:18,248 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:41:18,248 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:41:18,248 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:41:18,248 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:41:18,248 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 23:41:18,248 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 23:41:18,249 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 23:41:18,249 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 23:41:18,249 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 23:41:18,249 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 23:41:18,249 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 23:41:18,249 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 23:41:18,249 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 23:41:18,249 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 23:41:18,249 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_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/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 -> b615ef3e9ec848bbbdbcac9993fc5d609594ef1caaa279a862c4f038e6ec482e [2024-11-23 23:41:18,613 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 23:41:18,624 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 23:41:18,628 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 23:41:18,630 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 23:41:18,630 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 23:41:18,633 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--realtek--atp.ko-entry_point.cil.out.i [2024-11-23 23:41:21,766 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/bin/uautomizer-verify-LYvppIcaGC/data/43be75993/5fb8f8d13af14d2aa8fef479bac436db/FLAGf19603f3b [2024-11-23 23:41:22,528 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 23:41:22,530 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--realtek--atp.ko-entry_point.cil.out.i [2024-11-23 23:41:22,572 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/bin/uautomizer-verify-LYvppIcaGC/data/43be75993/5fb8f8d13af14d2aa8fef479bac436db/FLAGf19603f3b [2024-11-23 23:41:22,591 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/bin/uautomizer-verify-LYvppIcaGC/data/43be75993/5fb8f8d13af14d2aa8fef479bac436db [2024-11-23 23:41:22,593 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 23:41:22,595 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 23:41:22,596 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 23:41:22,596 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 23:41:22,601 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 23:41:22,602 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:41:22" (1/1) ... [2024-11-23 23:41:22,603 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e650c2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:41:22, skipping insertion in model container [2024-11-23 23:41:22,603 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:41:22" (1/1) ... [2024-11-23 23:41:22,729 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:41:24,022 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_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--realtek--atp.ko-entry_point.cil.out.i[208194,208207] [2024-11-23 23:41:24,068 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:41:24,094 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 23:41:24,286 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; bts %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [5300] [2024-11-23 23:41:24,289 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; btr %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr)); [5307] [2024-11-23 23:41:24,301 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("outb %b0, %w1": : "a" (value), "Nd" (port)); [5446] [2024-11-23 23:41:24,302 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("inb %w1, %b0": "=a" (value): "Nd" (port)); [5454] [2024-11-23 23:41:24,315 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("inb %w1,%b0": "=a" (_v): "d" (port)); [5637] [2024-11-23 23:41:24,471 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_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--realtek--atp.ko-entry_point.cil.out.i[208194,208207] [2024-11-23 23:41:24,486 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:41:24,613 INFO L204 MainTranslator]: Completed translation [2024-11-23 23:41:24,615 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:41:24 WrapperNode [2024-11-23 23:41:24,615 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 23:41:24,616 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 23:41:24,617 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 23:41:24,617 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 23:41:24,625 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:41:24" (1/1) ... [2024-11-23 23:41:24,689 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:41:24" (1/1) ... [2024-11-23 23:41:24,849 INFO L138 Inliner]: procedures = 152, calls = 711, calls flagged for inlining = 70, calls inlined = 67, statements flattened = 1968 [2024-11-23 23:41:24,850 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 23:41:24,851 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 23:41:24,851 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 23:41:24,851 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 23:41:24,861 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:41:24" (1/1) ... [2024-11-23 23:41:24,862 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:41:24" (1/1) ... [2024-11-23 23:41:24,895 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:41:24" (1/1) ... [2024-11-23 23:41:25,106 INFO L175 MemorySlicer]: Split 327 memory accesses to 10 slices as follows [2, 6, 4, 61, 3, 4, 4, 209, 23, 11]. 64 percent of accesses are in the largest equivalence class. The 39 initializations are split as follows [2, 0, 0, 0, 2, 2, 2, 0, 23, 8]. The 192 writes are split as follows [0, 4, 2, 61, 0, 0, 0, 125, 0, 0]. [2024-11-23 23:41:25,106 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:41:24" (1/1) ... [2024-11-23 23:41:25,107 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:41:24" (1/1) ... [2024-11-23 23:41:25,189 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:41:24" (1/1) ... [2024-11-23 23:41:25,198 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:41:24" (1/1) ... [2024-11-23 23:41:25,227 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:41:24" (1/1) ... [2024-11-23 23:41:25,247 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:41:24" (1/1) ... [2024-11-23 23:41:25,258 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:41:24" (1/1) ... [2024-11-23 23:41:25,279 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 23:41:25,284 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 23:41:25,284 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 23:41:25,284 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 23:41:25,285 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:41:24" (1/1) ... [2024-11-23 23:41:25,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:41:25,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:41:25,332 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 23:41:25,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 23:41:25,362 INFO L130 BoogieDeclarations]: Found specification of procedure atp_probe1 [2024-11-23 23:41:25,362 INFO L138 BoogieDeclarations]: Found implementation of procedure atp_probe1 [2024-11-23 23:41:25,362 INFO L130 BoogieDeclarations]: Found specification of procedure write_reg [2024-11-23 23:41:25,362 INFO L138 BoogieDeclarations]: Found implementation of procedure write_reg [2024-11-23 23:41:25,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-23 23:41:25,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-23 23:41:25,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-23 23:41:25,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-23 23:41:25,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-23 23:41:25,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-23 23:41:25,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2024-11-23 23:41:25,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2024-11-23 23:41:25,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#8 [2024-11-23 23:41:25,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#9 [2024-11-23 23:41:25,364 INFO L130 BoogieDeclarations]: Found specification of procedure read_block [2024-11-23 23:41:25,364 INFO L138 BoogieDeclarations]: Found implementation of procedure read_block [2024-11-23 23:41:25,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-23 23:41:25,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-23 23:41:25,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-23 23:41:25,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-23 23:41:25,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-23 23:41:25,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-11-23 23:41:25,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2024-11-23 23:41:25,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2024-11-23 23:41:25,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#8 [2024-11-23 23:41:25,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#9 [2024-11-23 23:41:25,366 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2024-11-23 23:41:25,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2024-11-23 23:41:25,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-23 23:41:25,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-23 23:41:25,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-23 23:41:25,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-23 23:41:25,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-23 23:41:25,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-23 23:41:25,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-23 23:41:25,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-23 23:41:25,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-23 23:41:25,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-23 23:41:25,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2024-11-23 23:41:25,367 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2024-11-23 23:41:25,367 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2024-11-23 23:41:25,367 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2024-11-23 23:41:25,367 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2024-11-23 23:41:25,367 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2024-11-23 23:41:25,367 INFO L130 BoogieDeclarations]: Found specification of procedure write_byte_mode0 [2024-11-23 23:41:25,367 INFO L138 BoogieDeclarations]: Found implementation of procedure write_byte_mode0 [2024-11-23 23:41:25,367 INFO L130 BoogieDeclarations]: Found specification of procedure write_byte_mode1 [2024-11-23 23:41:25,367 INFO L138 BoogieDeclarations]: Found implementation of procedure write_byte_mode1 [2024-11-23 23:41:25,367 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2024-11-23 23:41:25,367 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2024-11-23 23:41:25,367 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2024-11-23 23:41:25,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2024-11-23 23:41:25,368 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2024-11-23 23:41:25,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2024-11-23 23:41:25,368 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2024-11-23 23:41:25,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2024-11-23 23:41:25,368 INFO L130 BoogieDeclarations]: Found specification of procedure tx_timeout [2024-11-23 23:41:25,368 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_timeout [2024-11-23 23:41:25,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-23 23:41:25,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-23 23:41:25,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-23 23:41:25,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-23 23:41:25,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-23 23:41:25,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-23 23:41:25,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-23 23:41:25,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-23 23:41:25,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-23 23:41:25,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-11-23 23:41:25,372 INFO L130 BoogieDeclarations]: Found specification of procedure net_rx [2024-11-23 23:41:25,373 INFO L138 BoogieDeclarations]: Found implementation of procedure net_rx [2024-11-23 23:41:25,373 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2024-11-23 23:41:25,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2024-11-23 23:41:25,373 INFO L130 BoogieDeclarations]: Found specification of procedure write_reg_high [2024-11-23 23:41:25,373 INFO L138 BoogieDeclarations]: Found implementation of procedure write_reg_high [2024-11-23 23:41:25,373 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2024-11-23 23:41:25,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2024-11-23 23:41:25,373 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-23 23:41:25,373 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-23 23:41:25,373 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2024-11-23 23:41:25,373 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2024-11-23 23:41:25,373 INFO L130 BoogieDeclarations]: Found specification of procedure read_nibble [2024-11-23 23:41:25,373 INFO L138 BoogieDeclarations]: Found implementation of procedure read_nibble [2024-11-23 23:41:25,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-23 23:41:25,373 INFO L130 BoogieDeclarations]: Found specification of procedure hardware_init [2024-11-23 23:41:25,374 INFO L138 BoogieDeclarations]: Found implementation of procedure hardware_init [2024-11-23 23:41:25,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 23:41:25,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-23 23:41:25,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-23 23:41:25,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-23 23:41:25,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-23 23:41:25,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-23 23:41:25,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-23 23:41:25,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-23 23:41:25,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-23 23:41:25,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-23 23:41:25,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2024-11-23 23:41:25,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2024-11-23 23:41:25,374 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2024-11-23 23:41:25,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2024-11-23 23:41:25,374 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_2 [2024-11-23 23:41:25,374 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_2 [2024-11-23 23:41:25,374 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2024-11-23 23:41:25,374 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2024-11-23 23:41:25,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-23 23:41:25,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-23 23:41:25,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-23 23:41:25,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-23 23:41:25,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-23 23:41:25,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-23 23:41:25,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-23 23:41:25,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-23 23:41:25,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-11-23 23:41:25,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2024-11-23 23:41:25,375 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2024-11-23 23:41:25,375 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2024-11-23 23:41:25,379 INFO L130 BoogieDeclarations]: Found specification of procedure write_reg_byte [2024-11-23 23:41:25,379 INFO L138 BoogieDeclarations]: Found implementation of procedure write_reg_byte [2024-11-23 23:41:25,380 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2024-11-23 23:41:25,380 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2024-11-23 23:41:25,380 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2024-11-23 23:41:25,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2024-11-23 23:41:25,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-23 23:41:25,380 INFO L130 BoogieDeclarations]: Found specification of procedure inbyte [2024-11-23 23:41:25,380 INFO L138 BoogieDeclarations]: Found implementation of procedure inbyte [2024-11-23 23:41:25,380 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2024-11-23 23:41:25,380 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2024-11-23 23:41:25,380 INFO L130 BoogieDeclarations]: Found specification of procedure trigger_send [2024-11-23 23:41:25,380 INFO L138 BoogieDeclarations]: Found implementation of procedure trigger_send [2024-11-23 23:41:25,380 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2024-11-23 23:41:25,380 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2024-11-23 23:41:25,380 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2024-11-23 23:41:25,380 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2024-11-23 23:41:25,380 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2024-11-23 23:41:25,381 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2024-11-23 23:41:25,381 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2024-11-23 23:41:25,381 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2024-11-23 23:41:25,381 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2024-11-23 23:41:25,381 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2024-11-23 23:41:25,381 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2024-11-23 23:41:25,381 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2024-11-23 23:41:25,381 INFO L130 BoogieDeclarations]: Found specification of procedure eeprom_op [2024-11-23 23:41:25,381 INFO L138 BoogieDeclarations]: Found implementation of procedure eeprom_op [2024-11-23 23:41:25,381 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2024-11-23 23:41:25,381 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2024-11-23 23:41:25,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 23:41:25,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 23:41:25,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-23 23:41:25,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-23 23:41:25,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-23 23:41:25,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-23 23:41:25,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-23 23:41:25,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-23 23:41:25,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-23 23:41:25,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-23 23:41:25,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 23:41:25,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 23:41:26,005 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 23:41:26,008 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 23:41:26,958 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2024-11-23 23:41:34,107 INFO L? ?]: Removed 775 outVars from TransFormulas that were not future-live. [2024-11-23 23:41:34,107 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 23:41:34,142 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 23:41:34,143 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-23 23:41:34,143 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:41:34 BoogieIcfgContainer [2024-11-23 23:41:34,143 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 23:41:34,145 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 23:41:34,146 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 23:41:34,150 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 23:41:34,150 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:41:22" (1/3) ... [2024-11-23 23:41:34,151 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b35823f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:41:34, skipping insertion in model container [2024-11-23 23:41:34,151 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:41:24" (2/3) ... [2024-11-23 23:41:34,151 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b35823f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:41:34, skipping insertion in model container [2024-11-23 23:41:34,152 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:41:34" (3/3) ... [2024-11-23 23:41:34,153 INFO L128 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--realtek--atp.ko-entry_point.cil.out.i [2024-11-23 23:41:34,168 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 23:41:34,171 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--realtek--atp.ko-entry_point.cil.out.i that has 41 procedures, 924 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-23 23:41:34,257 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 23:41:34,270 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;@6ee24d5d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 23:41:34,270 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 23:41:34,277 INFO L276 IsEmpty]: Start isEmpty. Operand has 923 states, 639 states have (on average 1.3708920187793427) internal successors, (876), 654 states have internal predecessors, (876), 243 states have call successors, (243), 40 states have call predecessors, (243), 39 states have return successors, (238), 236 states have call predecessors, (238), 238 states have call successors, (238) [2024-11-23 23:41:34,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2024-11-23 23:41:34,344 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:41:34,345 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:41:34,345 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:41:34,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:41:34,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1528622827, now seen corresponding path program 1 times [2024-11-23 23:41:34,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:41:34,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30507146] [2024-11-23 23:41:34,362 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:41:34,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:41:38,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:41:38,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2476 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2471 trivial. 0 not checked. [2024-11-23 23:41:38,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:41:38,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30507146] [2024-11-23 23:41:38,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30507146] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:41:38,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604151041] [2024-11-23 23:41:38,711 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:41:38,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:41:38,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:41:38,713 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:41:38,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 23:41:42,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:41:42,470 INFO L256 TraceCheckSpWp]: Trace formula consists of 2752 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-23 23:41:42,483 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:41:42,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2476 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2467 trivial. 0 not checked. [2024-11-23 23:41:42,538 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:41:42,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604151041] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:41:42,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:41:42,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-23 23:41:42,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363896392] [2024-11-23 23:41:42,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:41:42,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 23:41:42,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:41:42,567 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 23:41:42,567 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 23:41:42,571 INFO L87 Difference]: Start difference. First operand has 923 states, 639 states have (on average 1.3708920187793427) internal successors, (876), 654 states have internal predecessors, (876), 243 states have call successors, (243), 40 states have call predecessors, (243), 39 states have return successors, (238), 236 states have call predecessors, (238), 238 states have call successors, (238) Second operand has 2 states, 2 states have (on average 55.0) internal successors, (110), 2 states have internal predecessors, (110), 2 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2024-11-23 23:41:42,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:41:42,740 INFO L93 Difference]: Finished difference Result 1841 states and 2789 transitions. [2024-11-23 23:41:42,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 23:41:42,742 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 55.0) internal successors, (110), 2 states have internal predecessors, (110), 2 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) Word has length 364 [2024-11-23 23:41:42,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:41:42,777 INFO L225 Difference]: With dead ends: 1841 [2024-11-23 23:41:42,777 INFO L226 Difference]: Without dead ends: 901 [2024-11-23 23:41:42,795 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 23:41:42,800 INFO L435 NwaCegarLoop]: 1337 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, 1337 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:41:42,801 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1337 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:41:42,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2024-11-23 23:41:42,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 901. [2024-11-23 23:41:42,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 626 states have (on average 1.3370607028753994) internal successors, (837), 634 states have internal predecessors, (837), 236 states have call successors, (236), 39 states have call predecessors, (236), 38 states have return successors, (235), 233 states have call predecessors, (235), 235 states have call successors, (235) [2024-11-23 23:41:42,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1308 transitions. [2024-11-23 23:41:42,963 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1308 transitions. Word has length 364 [2024-11-23 23:41:42,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:41:42,967 INFO L471 AbstractCegarLoop]: Abstraction has 901 states and 1308 transitions. [2024-11-23 23:41:42,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 55.0) internal successors, (110), 2 states have internal predecessors, (110), 2 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2024-11-23 23:41:42,967 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1308 transitions. [2024-11-23 23:41:42,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2024-11-23 23:41:42,987 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:41:42,989 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:41:43,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-23 23:41:43,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-23 23:41:43,190 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:41:43,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:41:43,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1064948970, now seen corresponding path program 1 times [2024-11-23 23:41:43,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:41:43,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664109560] [2024-11-23 23:41:43,191 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:41:43,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:41:45,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:41:46,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1720 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1720 trivial. 0 not checked. [2024-11-23 23:41:46,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:41:46,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664109560] [2024-11-23 23:41:46,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664109560] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:41:46,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:41:46,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:41:46,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862427622] [2024-11-23 23:41:46,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:41:46,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:41:46,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:41:46,919 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:41:46,920 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:41:46,920 INFO L87 Difference]: Start difference. First operand 901 states and 1308 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2024-11-23 23:41:47,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:41:47,557 INFO L93 Difference]: Finished difference Result 2688 states and 3902 transitions. [2024-11-23 23:41:47,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 23:41:47,558 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 324 [2024-11-23 23:41:47,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:41:47,581 INFO L225 Difference]: With dead ends: 2688 [2024-11-23 23:41:47,583 INFO L226 Difference]: Without dead ends: 1797 [2024-11-23 23:41:47,592 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:41:47,593 INFO L435 NwaCegarLoop]: 1680 mSDtfsCounter, 1290 mSDsluCounter, 4635 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1291 SdHoareTripleChecker+Valid, 6315 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:41:47,594 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1291 Valid, 6315 Invalid, 38 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:41:47,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1797 states. [2024-11-23 23:41:47,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1797 to 1792. [2024-11-23 23:41:47,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1792 states, 1245 states have (on average 1.3349397590361445) internal successors, (1662), 1261 states have internal predecessors, (1662), 469 states have call successors, (469), 78 states have call predecessors, (469), 77 states have return successors, (468), 464 states have call predecessors, (468), 468 states have call successors, (468) [2024-11-23 23:41:47,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1792 states to 1792 states and 2599 transitions. [2024-11-23 23:41:47,778 INFO L78 Accepts]: Start accepts. Automaton has 1792 states and 2599 transitions. Word has length 324 [2024-11-23 23:41:47,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:41:47,779 INFO L471 AbstractCegarLoop]: Abstraction has 1792 states and 2599 transitions. [2024-11-23 23:41:47,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2024-11-23 23:41:47,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1792 states and 2599 transitions. [2024-11-23 23:41:47,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2024-11-23 23:41:47,799 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:41:47,799 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:41:47,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 23:41:47,799 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:41:47,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:41:47,800 INFO L85 PathProgramCache]: Analyzing trace with hash 600035532, now seen corresponding path program 1 times [2024-11-23 23:41:47,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:41:47,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689583036] [2024-11-23 23:41:47,800 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:41:47,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:41:50,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:41:51,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2476 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2476 trivial. 0 not checked. [2024-11-23 23:41:51,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:41:51,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689583036] [2024-11-23 23:41:51,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689583036] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:41:51,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:41:51,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:41:51,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428364146] [2024-11-23 23:41:51,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:41:51,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:41:51,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:41:51,205 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:41:51,205 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:41:51,206 INFO L87 Difference]: Start difference. First operand 1792 states and 2599 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 3 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2024-11-23 23:41:51,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:41:51,882 INFO L93 Difference]: Finished difference Result 5364 states and 7778 transitions. [2024-11-23 23:41:51,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 23:41:51,883 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 3 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) Word has length 362 [2024-11-23 23:41:51,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:41:51,922 INFO L225 Difference]: With dead ends: 5364 [2024-11-23 23:41:51,922 INFO L226 Difference]: Without dead ends: 3582 [2024-11-23 23:41:51,936 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:41:51,939 INFO L435 NwaCegarLoop]: 1729 mSDtfsCounter, 1289 mSDsluCounter, 4734 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1290 SdHoareTripleChecker+Valid, 6463 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:41:51,940 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1290 Valid, 6463 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:41:51,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3582 states. [2024-11-23 23:41:52,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3582 to 3561. [2024-11-23 23:41:52,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3561 states, 2471 states have (on average 1.3342776203966005) internal successors, (3297), 2510 states have internal predecessors, (3297), 934 states have call successors, (934), 156 states have call predecessors, (934), 155 states have return successors, (933), 918 states have call predecessors, (933), 933 states have call successors, (933) [2024-11-23 23:41:52,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3561 states to 3561 states and 5164 transitions. [2024-11-23 23:41:52,253 INFO L78 Accepts]: Start accepts. Automaton has 3561 states and 5164 transitions. Word has length 362 [2024-11-23 23:41:52,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:41:52,254 INFO L471 AbstractCegarLoop]: Abstraction has 3561 states and 5164 transitions. [2024-11-23 23:41:52,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 3 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2024-11-23 23:41:52,255 INFO L276 IsEmpty]: Start isEmpty. Operand 3561 states and 5164 transitions. [2024-11-23 23:41:52,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2024-11-23 23:41:52,285 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:41:52,285 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:41:52,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 23:41:52,286 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:41:52,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:41:52,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1273095033, now seen corresponding path program 1 times [2024-11-23 23:41:52,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:41:52,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570439051] [2024-11-23 23:41:52,287 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:41:52,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:41:54,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:41:55,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1720 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1720 trivial. 0 not checked. [2024-11-23 23:41:55,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:41:55,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570439051] [2024-11-23 23:41:55,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570439051] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:41:55,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:41:55,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:41:55,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235845878] [2024-11-23 23:41:55,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:41:55,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:41:55,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:41:55,497 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:41:55,497 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:41:55,498 INFO L87 Difference]: Start difference. First operand 3561 states and 5164 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 3 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2024-11-23 23:41:56,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:41:56,254 INFO L93 Difference]: Finished difference Result 10691 states and 15498 transitions. [2024-11-23 23:41:56,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 23:41:56,255 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 3 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 326 [2024-11-23 23:41:56,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:41:56,335 INFO L225 Difference]: With dead ends: 10691 [2024-11-23 23:41:56,336 INFO L226 Difference]: Without dead ends: 7140 [2024-11-23 23:41:56,368 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:41:56,369 INFO L435 NwaCegarLoop]: 1305 mSDtfsCounter, 1292 mSDsluCounter, 3886 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1293 SdHoareTripleChecker+Valid, 5191 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:41:56,370 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1293 Valid, 5191 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:41:56,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7140 states. [2024-11-23 23:41:56,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7140 to 7117. [2024-11-23 23:41:56,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7117 states, 4941 states have (on average 1.333130945152803) internal successors, (6587), 5017 states have internal predecessors, (6587), 1863 states have call successors, (1863), 313 states have call predecessors, (1863), 312 states have return successors, (1862), 1834 states have call predecessors, (1862), 1862 states have call successors, (1862) [2024-11-23 23:41:56,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7117 states to 7117 states and 10312 transitions. [2024-11-23 23:41:56,947 INFO L78 Accepts]: Start accepts. Automaton has 7117 states and 10312 transitions. Word has length 326 [2024-11-23 23:41:56,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:41:56,948 INFO L471 AbstractCegarLoop]: Abstraction has 7117 states and 10312 transitions. [2024-11-23 23:41:56,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 3 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2024-11-23 23:41:56,948 INFO L276 IsEmpty]: Start isEmpty. Operand 7117 states and 10312 transitions. [2024-11-23 23:41:56,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2024-11-23 23:41:56,982 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:41:56,982 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:41:56,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 23:41:56,983 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:41:56,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:41:56,983 INFO L85 PathProgramCache]: Analyzing trace with hash -189699494, now seen corresponding path program 1 times [2024-11-23 23:41:56,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:41:56,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605361967] [2024-11-23 23:41:56,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:41:56,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:41:59,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:42:00,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1720 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1720 trivial. 0 not checked. [2024-11-23 23:42:00,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:42:00,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605361967] [2024-11-23 23:42:00,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605361967] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:42:00,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:42:00,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:42:00,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068221477] [2024-11-23 23:42:00,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:42:00,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:42:00,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:42:00,463 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:42:00,463 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:42:00,464 INFO L87 Difference]: Start difference. First operand 7117 states and 10312 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 3 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2024-11-23 23:42:01,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:42:01,436 INFO L93 Difference]: Finished difference Result 21143 states and 30592 transitions. [2024-11-23 23:42:01,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 23:42:01,439 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 3 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 325 [2024-11-23 23:42:01,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:42:01,609 INFO L225 Difference]: With dead ends: 21143 [2024-11-23 23:42:01,609 INFO L226 Difference]: Without dead ends: 14036 [2024-11-23 23:42:01,668 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:42:01,669 INFO L435 NwaCegarLoop]: 1306 mSDtfsCounter, 1291 mSDsluCounter, 3888 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1292 SdHoareTripleChecker+Valid, 5194 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:42:01,670 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1292 Valid, 5194 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:42:01,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14036 states. [2024-11-23 23:42:02,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14036 to 13994. [2024-11-23 23:42:02,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13994 states, 9722 states have (on average 1.3302818350133718) internal successors, (12933), 9865 states have internal predecessors, (12933), 3647 states have call successors, (3647), 625 states have call predecessors, (3647), 624 states have return successors, (3646), 3596 states have call predecessors, (3646), 3646 states have call successors, (3646) [2024-11-23 23:42:02,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13994 states to 13994 states and 20226 transitions. [2024-11-23 23:42:02,908 INFO L78 Accepts]: Start accepts. Automaton has 13994 states and 20226 transitions. Word has length 325 [2024-11-23 23:42:02,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:42:02,910 INFO L471 AbstractCegarLoop]: Abstraction has 13994 states and 20226 transitions. [2024-11-23 23:42:02,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 3 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2024-11-23 23:42:02,914 INFO L276 IsEmpty]: Start isEmpty. Operand 13994 states and 20226 transitions. [2024-11-23 23:42:02,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2024-11-23 23:42:02,968 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:42:02,969 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:42:02,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 23:42:02,969 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:42:02,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:42:02,970 INFO L85 PathProgramCache]: Analyzing trace with hash 2043533653, now seen corresponding path program 1 times [2024-11-23 23:42:02,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:42:02,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796110852] [2024-11-23 23:42:02,971 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:42:02,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:42:06,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:42:07,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2483 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2481 trivial. 0 not checked. [2024-11-23 23:42:07,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:42:07,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796110852] [2024-11-23 23:42:07,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796110852] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:42:07,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615505802] [2024-11-23 23:42:07,521 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:42:07,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:42:07,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:42:07,524 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:42:07,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 23:42:10,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:42:10,748 INFO L256 TraceCheckSpWp]: Trace formula consists of 2809 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-23 23:42:10,760 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:42:10,904 INFO L134 CoverageAnalysis]: Checked inductivity of 2483 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2483 trivial. 0 not checked. [2024-11-23 23:42:10,904 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:42:10,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615505802] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:42:10,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:42:10,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-23 23:42:10,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239751370] [2024-11-23 23:42:10,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:42:10,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:42:10,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:42:10,909 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:42:10,909 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:42:10,911 INFO L87 Difference]: Start difference. First operand 13994 states and 20226 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-23 23:42:11,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:42:11,529 INFO L93 Difference]: Finished difference Result 14012 states and 20258 transitions. [2024-11-23 23:42:11,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:42:11,530 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 374 [2024-11-23 23:42:11,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:42:11,689 INFO L225 Difference]: With dead ends: 14012 [2024-11-23 23:42:11,689 INFO L226 Difference]: Without dead ends: 14009 [2024-11-23 23:42:11,704 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:42:11,706 INFO L435 NwaCegarLoop]: 1307 mSDtfsCounter, 0 mSDsluCounter, 1302 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2609 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:42:11,706 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2609 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:42:11,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14009 states. [2024-11-23 23:42:12,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14009 to 14009. [2024-11-23 23:42:12,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14009 states, 9737 states have (on average 1.32977303070761) internal successors, (12948), 9880 states have internal predecessors, (12948), 3647 states have call successors, (3647), 625 states have call predecessors, (3647), 624 states have return successors, (3646), 3596 states have call predecessors, (3646), 3646 states have call successors, (3646) [2024-11-23 23:42:12,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14009 states to 14009 states and 20241 transitions. [2024-11-23 23:42:12,646 INFO L78 Accepts]: Start accepts. Automaton has 14009 states and 20241 transitions. Word has length 374 [2024-11-23 23:42:12,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:42:12,648 INFO L471 AbstractCegarLoop]: Abstraction has 14009 states and 20241 transitions. [2024-11-23 23:42:12,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-23 23:42:12,648 INFO L276 IsEmpty]: Start isEmpty. Operand 14009 states and 20241 transitions. [2024-11-23 23:42:12,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2024-11-23 23:42:12,683 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:42:12,683 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:42:12,699 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-23 23:42:12,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-23 23:42:12,884 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:42:12,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:42:12,885 INFO L85 PathProgramCache]: Analyzing trace with hash 542324282, now seen corresponding path program 1 times [2024-11-23 23:42:12,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:42:12,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768915762] [2024-11-23 23:42:12,885 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:42:12,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:42:15,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:42:16,883 INFO L134 CoverageAnalysis]: Checked inductivity of 2483 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2481 trivial. 0 not checked. [2024-11-23 23:42:16,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:42:16,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768915762] [2024-11-23 23:42:16,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768915762] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:42:16,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439486123] [2024-11-23 23:42:16,884 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:42:16,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:42:16,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:42:16,886 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:42:16,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 23:42:20,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:42:20,310 INFO L256 TraceCheckSpWp]: Trace formula consists of 2814 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-23 23:42:20,318 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:42:20,436 INFO L134 CoverageAnalysis]: Checked inductivity of 2483 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2483 trivial. 0 not checked. [2024-11-23 23:42:20,436 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:42:20,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439486123] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:42:20,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:42:20,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-23 23:42:20,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594459005] [2024-11-23 23:42:20,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:42:20,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:42:20,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:42:20,439 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:42:20,439 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:42:20,440 INFO L87 Difference]: Start difference. First operand 14009 states and 20241 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-23 23:42:21,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:42:21,358 INFO L93 Difference]: Finished difference Result 28023 states and 40561 transitions. [2024-11-23 23:42:21,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:42:21,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 376 [2024-11-23 23:42:21,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:42:21,479 INFO L225 Difference]: With dead ends: 28023 [2024-11-23 23:42:21,479 INFO L226 Difference]: Without dead ends: 14024 [2024-11-23 23:42:21,581 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 377 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:42:21,582 INFO L435 NwaCegarLoop]: 1307 mSDtfsCounter, 0 mSDsluCounter, 1303 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2610 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:42:21,582 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2610 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:42:21,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14024 states. [2024-11-23 23:42:22,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14024 to 14024. [2024-11-23 23:42:22,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14024 states, 9752 states have (on average 1.3292657916324857) internal successors, (12963), 9895 states have internal predecessors, (12963), 3647 states have call successors, (3647), 625 states have call predecessors, (3647), 624 states have return successors, (3646), 3596 states have call predecessors, (3646), 3646 states have call successors, (3646) [2024-11-23 23:42:22,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14024 states to 14024 states and 20256 transitions. [2024-11-23 23:42:22,814 INFO L78 Accepts]: Start accepts. Automaton has 14024 states and 20256 transitions. Word has length 376 [2024-11-23 23:42:22,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:42:22,816 INFO L471 AbstractCegarLoop]: Abstraction has 14024 states and 20256 transitions. [2024-11-23 23:42:22,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-23 23:42:22,817 INFO L276 IsEmpty]: Start isEmpty. Operand 14024 states and 20256 transitions. [2024-11-23 23:42:22,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2024-11-23 23:42:22,852 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:42:22,852 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:42:22,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-23 23:42:23,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:42:23,057 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:42:23,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:42:23,060 INFO L85 PathProgramCache]: Analyzing trace with hash 890731929, now seen corresponding path program 1 times [2024-11-23 23:42:23,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:42:23,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634529655] [2024-11-23 23:42:23,060 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:42:23,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:42:26,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:42:27,238 INFO L134 CoverageAnalysis]: Checked inductivity of 2483 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2481 trivial. 0 not checked. [2024-11-23 23:42:27,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:42:27,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634529655] [2024-11-23 23:42:27,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634529655] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:42:27,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302474797] [2024-11-23 23:42:27,239 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:42:27,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:42:27,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:42:27,242 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:42:27,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 23:42:31,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:42:31,689 INFO L256 TraceCheckSpWp]: Trace formula consists of 2815 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 23:42:31,697 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:42:31,813 INFO L134 CoverageAnalysis]: Checked inductivity of 2483 backedges. 1268 proven. 0 refuted. 0 times theorem prover too weak. 1215 trivial. 0 not checked. [2024-11-23 23:42:31,814 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:42:31,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302474797] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:42:31,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:42:31,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-23 23:42:31,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446176203] [2024-11-23 23:42:31,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:42:31,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:42:31,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:42:31,815 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:42:31,816 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:42:31,816 INFO L87 Difference]: Start difference. First operand 14024 states and 20256 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (58), 2 states have call predecessors, (58), 2 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2024-11-23 23:42:32,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:42:32,375 INFO L93 Difference]: Finished difference Result 28053 states and 40561 transitions. [2024-11-23 23:42:32,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:42:32,376 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (58), 2 states have call predecessors, (58), 2 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) Word has length 377 [2024-11-23 23:42:32,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:42:32,497 INFO L225 Difference]: With dead ends: 28053 [2024-11-23 23:42:32,497 INFO L226 Difference]: Without dead ends: 14039 [2024-11-23 23:42:32,579 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:42:32,580 INFO L435 NwaCegarLoop]: 1307 mSDtfsCounter, 0 mSDsluCounter, 1301 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2608 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:42:32,580 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2608 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:42:32,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14039 states. [2024-11-23 23:42:33,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14039 to 14039. [2024-11-23 23:42:33,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14039 states, 9767 states have (on average 1.3287601105764308) internal successors, (12978), 9910 states have internal predecessors, (12978), 3647 states have call successors, (3647), 625 states have call predecessors, (3647), 624 states have return successors, (3646), 3596 states have call predecessors, (3646), 3646 states have call successors, (3646) [2024-11-23 23:42:33,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14039 states to 14039 states and 20271 transitions. [2024-11-23 23:42:33,348 INFO L78 Accepts]: Start accepts. Automaton has 14039 states and 20271 transitions. Word has length 377 [2024-11-23 23:42:33,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:42:33,349 INFO L471 AbstractCegarLoop]: Abstraction has 14039 states and 20271 transitions. [2024-11-23 23:42:33,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (58), 2 states have call predecessors, (58), 2 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2024-11-23 23:42:33,350 INFO L276 IsEmpty]: Start isEmpty. Operand 14039 states and 20271 transitions. [2024-11-23 23:42:33,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2024-11-23 23:42:33,384 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:42:33,384 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:42:33,403 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-23 23:42:33,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:42:33,585 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:42:33,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:42:33,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1829052073, now seen corresponding path program 1 times [2024-11-23 23:42:33,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:42:33,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566804229] [2024-11-23 23:42:33,586 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:42:33,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:42:36,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:42:37,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2483 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2481 trivial. 0 not checked. [2024-11-23 23:42:37,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:42:37,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566804229] [2024-11-23 23:42:37,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566804229] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:42:37,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047803198] [2024-11-23 23:42:37,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:42:37,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:42:37,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:42:37,210 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:42:37,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 23:42:40,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:42:40,905 INFO L256 TraceCheckSpWp]: Trace formula consists of 2816 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 23:42:40,915 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:42:41,018 INFO L134 CoverageAnalysis]: Checked inductivity of 2483 backedges. 1035 proven. 0 refuted. 0 times theorem prover too weak. 1448 trivial. 0 not checked. [2024-11-23 23:42:41,018 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:42:41,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047803198] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:42:41,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:42:41,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-23 23:42:41,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097045331] [2024-11-23 23:42:41,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:42:41,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:42:41,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:42:41,021 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:42:41,021 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:42:41,021 INFO L87 Difference]: Start difference. First operand 14039 states and 20271 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2024-11-23 23:42:41,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:42:41,840 INFO L93 Difference]: Finished difference Result 28083 states and 40591 transitions. [2024-11-23 23:42:41,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:42:41,841 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) Word has length 378 [2024-11-23 23:42:41,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:42:41,973 INFO L225 Difference]: With dead ends: 28083 [2024-11-23 23:42:41,973 INFO L226 Difference]: Without dead ends: 14054 [2024-11-23 23:42:42,060 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:42:42,063 INFO L435 NwaCegarLoop]: 1307 mSDtfsCounter, 0 mSDsluCounter, 1301 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2608 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:42:42,063 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2608 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:42:42,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14054 states. [2024-11-23 23:42:42,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14054 to 14054. [2024-11-23 23:42:42,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14054 states, 9782 states have (on average 1.3282559803721121) internal successors, (12993), 9925 states have internal predecessors, (12993), 3647 states have call successors, (3647), 625 states have call predecessors, (3647), 624 states have return successors, (3646), 3596 states have call predecessors, (3646), 3646 states have call successors, (3646) [2024-11-23 23:42:42,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14054 states to 14054 states and 20286 transitions. [2024-11-23 23:42:42,875 INFO L78 Accepts]: Start accepts. Automaton has 14054 states and 20286 transitions. Word has length 378 [2024-11-23 23:42:42,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:42:42,876 INFO L471 AbstractCegarLoop]: Abstraction has 14054 states and 20286 transitions. [2024-11-23 23:42:42,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2024-11-23 23:42:42,876 INFO L276 IsEmpty]: Start isEmpty. Operand 14054 states and 20286 transitions. [2024-11-23 23:42:42,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2024-11-23 23:42:42,903 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:42:42,903 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:42:42,921 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-23 23:42:43,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:42:43,104 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:42:43,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:42:43,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1255006684, now seen corresponding path program 1 times [2024-11-23 23:42:43,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:42:43,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24781818] [2024-11-23 23:42:43,105 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:42:43,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:42:45,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:42:46,372 INFO L134 CoverageAnalysis]: Checked inductivity of 1727 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1725 trivial. 0 not checked. [2024-11-23 23:42:46,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:42:46,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24781818] [2024-11-23 23:42:46,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24781818] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:42:46,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79255892] [2024-11-23 23:42:46,375 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:42:46,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:42:46,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:42:46,378 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:42:46,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 23:42:50,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:42:50,096 INFO L256 TraceCheckSpWp]: Trace formula consists of 2689 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-23 23:42:50,103 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:42:50,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1727 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1720 trivial. 0 not checked. [2024-11-23 23:42:50,668 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:42:50,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79255892] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:42:50,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:42:50,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2024-11-23 23:42:50,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835518660] [2024-11-23 23:42:50,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:42:50,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:42:50,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:42:50,670 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:42:50,670 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-11-23 23:42:50,670 INFO L87 Difference]: Start difference. First operand 14054 states and 20286 transitions. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 3 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) [2024-11-23 23:42:52,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:42:52,273 INFO L93 Difference]: Finished difference Result 35184 states and 50752 transitions. [2024-11-23 23:42:52,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 23:42:52,274 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 3 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) Word has length 339 [2024-11-23 23:42:52,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:42:52,446 INFO L225 Difference]: With dead ends: 35184 [2024-11-23 23:42:52,446 INFO L226 Difference]: Without dead ends: 21140 [2024-11-23 23:42:52,532 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2024-11-23 23:42:52,534 INFO L435 NwaCegarLoop]: 1368 mSDtfsCounter, 1321 mSDsluCounter, 6758 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1325 SdHoareTripleChecker+Valid, 8126 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:42:52,535 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1325 Valid, 8126 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 23:42:52,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21140 states. [2024-11-23 23:42:53,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21140 to 20991. [2024-11-23 23:42:53,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20991 states, 14623 states have (on average 1.3288654858784108) internal successors, (19432), 14845 states have internal predecessors, (19432), 5427 states have call successors, (5427), 933 states have call predecessors, (5427), 940 states have return successors, (5446), 5350 states have call predecessors, (5446), 5426 states have call successors, (5446) [2024-11-23 23:42:53,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20991 states to 20991 states and 30305 transitions. [2024-11-23 23:42:53,612 INFO L78 Accepts]: Start accepts. Automaton has 20991 states and 30305 transitions. Word has length 339 [2024-11-23 23:42:53,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:42:53,613 INFO L471 AbstractCegarLoop]: Abstraction has 20991 states and 30305 transitions. [2024-11-23 23:42:53,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 3 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) [2024-11-23 23:42:53,614 INFO L276 IsEmpty]: Start isEmpty. Operand 20991 states and 30305 transitions. [2024-11-23 23:42:53,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2024-11-23 23:42:53,659 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:42:53,659 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:42:53,678 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-23 23:42:53,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-23 23:42:53,859 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:42:53,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:42:53,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1485998930, now seen corresponding path program 1 times [2024-11-23 23:42:53,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:42:53,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078237022] [2024-11-23 23:42:53,862 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:42:53,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:42:56,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:42:57,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1726 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1720 trivial. 0 not checked. [2024-11-23 23:42:57,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:42:57,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078237022] [2024-11-23 23:42:57,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078237022] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:42:57,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525075321] [2024-11-23 23:42:57,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:42:57,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:42:57,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:42:57,679 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:42:57,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-23 23:43:01,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:43:01,126 INFO L256 TraceCheckSpWp]: Trace formula consists of 2691 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-23 23:43:01,134 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:43:01,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1726 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1720 trivial. 0 not checked. [2024-11-23 23:43:01,696 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:43:01,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525075321] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:43:01,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:43:01,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2024-11-23 23:43:01,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383250009] [2024-11-23 23:43:01,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:43:01,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:43:01,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:43:01,699 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:43:01,700 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-11-23 23:43:01,700 INFO L87 Difference]: Start difference. First operand 20991 states and 30305 transitions. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 5 states have internal predecessors, (108), 3 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) [2024-11-23 23:43:03,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:43:03,279 INFO L93 Difference]: Finished difference Result 49111 states and 70836 transitions. [2024-11-23 23:43:03,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 23:43:03,280 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 5 states have internal predecessors, (108), 3 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) Word has length 340 [2024-11-23 23:43:03,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:43:03,496 INFO L225 Difference]: With dead ends: 49111 [2024-11-23 23:43:03,496 INFO L226 Difference]: Without dead ends: 28130 [2024-11-23 23:43:03,611 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2024-11-23 23:43:03,612 INFO L435 NwaCegarLoop]: 1759 mSDtfsCounter, 1321 mSDsluCounter, 8308 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1325 SdHoareTripleChecker+Valid, 10067 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:43:03,612 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1325 Valid, 10067 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 23:43:03,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28130 states. [2024-11-23 23:43:05,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28130 to 27960. [2024-11-23 23:43:05,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27960 states, 19484 states have (on average 1.3288339150071853) internal successors, (25891), 19801 states have internal predecessors, (25891), 7207 states have call successors, (7207), 1241 states have call predecessors, (7207), 1268 states have return successors, (7258), 7100 states have call predecessors, (7258), 7206 states have call successors, (7258) [2024-11-23 23:43:05,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27960 states to 27960 states and 40356 transitions. [2024-11-23 23:43:05,383 INFO L78 Accepts]: Start accepts. Automaton has 27960 states and 40356 transitions. Word has length 340 [2024-11-23 23:43:05,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:43:05,384 INFO L471 AbstractCegarLoop]: Abstraction has 27960 states and 40356 transitions. [2024-11-23 23:43:05,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 5 states have internal predecessors, (108), 3 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) [2024-11-23 23:43:05,384 INFO L276 IsEmpty]: Start isEmpty. Operand 27960 states and 40356 transitions. [2024-11-23 23:43:05,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2024-11-23 23:43:05,436 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:43:05,436 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:43:05,454 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-23 23:43:05,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-23 23:43:05,638 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:43:05,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:43:05,638 INFO L85 PathProgramCache]: Analyzing trace with hash 640497955, now seen corresponding path program 1 times [2024-11-23 23:43:05,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:43:05,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486325568] [2024-11-23 23:43:05,639 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:43:05,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:43:08,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:43:09,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1726 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1720 trivial. 0 not checked. [2024-11-23 23:43:09,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:43:09,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486325568] [2024-11-23 23:43:09,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486325568] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:43:09,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428534286] [2024-11-23 23:43:09,213 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:43:09,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:43:09,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:43:09,217 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:43:09,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-23 23:43:13,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:43:13,748 INFO L256 TraceCheckSpWp]: Trace formula consists of 2693 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-23 23:43:13,758 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:43:14,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1726 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1720 trivial. 0 not checked. [2024-11-23 23:43:14,403 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:43:14,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428534286] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:43:14,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:43:14,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2024-11-23 23:43:14,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517529318] [2024-11-23 23:43:14,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:43:14,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:43:14,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:43:14,406 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:43:14,406 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-11-23 23:43:14,406 INFO L87 Difference]: Start difference. First operand 27960 states and 40356 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 5 states have internal predecessors, (109), 3 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) [2024-11-23 23:43:16,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:43:16,817 INFO L93 Difference]: Finished difference Result 63038 states and 90920 transitions. [2024-11-23 23:43:16,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 23:43:16,818 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 5 states have internal predecessors, (109), 3 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) Word has length 341 [2024-11-23 23:43:16,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:43:17,156 INFO L225 Difference]: With dead ends: 63038 [2024-11-23 23:43:17,156 INFO L226 Difference]: Without dead ends: 35088 [2024-11-23 23:43:17,365 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2024-11-23 23:43:17,366 INFO L435 NwaCegarLoop]: 1759 mSDtfsCounter, 1321 mSDsluCounter, 8308 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1325 SdHoareTripleChecker+Valid, 10067 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:43:17,367 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1325 Valid, 10067 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 23:43:17,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35088 states. [2024-11-23 23:43:19,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35088 to 27982. [2024-11-23 23:43:19,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27982 states, 19500 states have (on average 1.3285641025641026) internal successors, (25907), 19819 states have internal predecessors, (25907), 7207 states have call successors, (7207), 1241 states have call predecessors, (7207), 1274 states have return successors, (7267), 7104 states have call predecessors, (7267), 7206 states have call successors, (7267) [2024-11-23 23:43:19,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27982 states to 27982 states and 40381 transitions. [2024-11-23 23:43:19,464 INFO L78 Accepts]: Start accepts. Automaton has 27982 states and 40381 transitions. Word has length 341 [2024-11-23 23:43:19,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:43:19,465 INFO L471 AbstractCegarLoop]: Abstraction has 27982 states and 40381 transitions. [2024-11-23 23:43:19,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 5 states have internal predecessors, (109), 3 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) [2024-11-23 23:43:19,466 INFO L276 IsEmpty]: Start isEmpty. Operand 27982 states and 40381 transitions. [2024-11-23 23:43:19,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2024-11-23 23:43:19,523 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:43:19,523 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:43:19,542 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-23 23:43:19,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-23 23:43:19,725 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:43:19,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:43:19,727 INFO L85 PathProgramCache]: Analyzing trace with hash -959250347, now seen corresponding path program 1 times [2024-11-23 23:43:19,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:43:19,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373717655] [2024-11-23 23:43:19,727 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:43:19,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:43:22,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:43:23,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1726 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1720 trivial. 0 not checked. [2024-11-23 23:43:23,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:43:23,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373717655] [2024-11-23 23:43:23,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373717655] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:43:23,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672583510] [2024-11-23 23:43:23,422 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:43:23,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:43:23,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:43:23,425 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:43:23,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-23 23:43:26,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:43:27,000 INFO L256 TraceCheckSpWp]: Trace formula consists of 2695 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-23 23:43:27,004 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:43:27,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1726 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1720 trivial. 0 not checked. [2024-11-23 23:43:27,525 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:43:27,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672583510] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:43:27,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:43:27,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2024-11-23 23:43:27,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362651645] [2024-11-23 23:43:27,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:43:27,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:43:27,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:43:27,526 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:43:27,527 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-11-23 23:43:27,528 INFO L87 Difference]: Start difference. First operand 27982 states and 40381 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 3 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) [2024-11-23 23:43:29,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:43:29,331 INFO L93 Difference]: Finished difference Result 63068 states and 90953 transitions. [2024-11-23 23:43:29,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 23:43:29,332 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 3 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) Word has length 342 [2024-11-23 23:43:29,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:43:29,610 INFO L225 Difference]: With dead ends: 63068 [2024-11-23 23:43:29,610 INFO L226 Difference]: Without dead ends: 35096 [2024-11-23 23:43:29,774 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2024-11-23 23:43:29,776 INFO L435 NwaCegarLoop]: 1759 mSDtfsCounter, 1321 mSDsluCounter, 8308 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1325 SdHoareTripleChecker+Valid, 10067 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:43:29,776 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1325 Valid, 10067 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 23:43:29,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35096 states. [2024-11-23 23:43:30,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35096 to 27995. [2024-11-23 23:43:30,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27995 states, 19510 states have (on average 1.328395694515633) internal successors, (25917), 19828 states have internal predecessors, (25917), 7207 states have call successors, (7207), 1241 states have call predecessors, (7207), 1277 states have return successors, (7270), 7108 states have call predecessors, (7270), 7206 states have call successors, (7270) [2024-11-23 23:43:31,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27995 states to 27995 states and 40394 transitions. [2024-11-23 23:43:31,112 INFO L78 Accepts]: Start accepts. Automaton has 27995 states and 40394 transitions. Word has length 342 [2024-11-23 23:43:31,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:43:31,112 INFO L471 AbstractCegarLoop]: Abstraction has 27995 states and 40394 transitions. [2024-11-23 23:43:31,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 3 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) [2024-11-23 23:43:31,112 INFO L276 IsEmpty]: Start isEmpty. Operand 27995 states and 40394 transitions. [2024-11-23 23:43:31,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2024-11-23 23:43:31,190 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:43:31,190 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:43:31,212 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-23 23:43:31,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-23 23:43:31,391 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:43:31,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:43:31,396 INFO L85 PathProgramCache]: Analyzing trace with hash -758093591, now seen corresponding path program 1 times [2024-11-23 23:43:31,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:43:31,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963266076] [2024-11-23 23:43:31,397 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:43:31,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:43:34,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:43:34,886 INFO L134 CoverageAnalysis]: Checked inductivity of 2501 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 2478 trivial. 0 not checked. [2024-11-23 23:43:34,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:43:34,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963266076] [2024-11-23 23:43:34,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963266076] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:43:34,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083657274] [2024-11-23 23:43:34,887 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:43:34,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:43:34,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:43:34,890 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:43:34,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3757da4f-f12c-4c5f-b95c-3f3a9c592e20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process