./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--usb_8dev.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_ef9f184a-0bf6-4dc8-9446-7ae9ee8bbf76/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef9f184a-0bf6-4dc8-9446-7ae9ee8bbf76/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_ef9f184a-0bf6-4dc8-9446-7ae9ee8bbf76/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef9f184a-0bf6-4dc8-9446-7ae9ee8bbf76/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--usb_8dev.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef9f184a-0bf6-4dc8-9446-7ae9ee8bbf76/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_ef9f184a-0bf6-4dc8-9446-7ae9ee8bbf76/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 83293f5c81ac30df7449dd9c03263a4edbba62be916a9a4fda92d2518792b8d4 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 18:34:04,656 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 18:34:04,755 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef9f184a-0bf6-4dc8-9446-7ae9ee8bbf76/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-23 18:34:04,766 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 18:34:04,767 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 18:34:04,792 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 18:34:04,793 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 18:34:04,793 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 18:34:04,793 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 18:34:04,794 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 18:34:04,794 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 18:34:04,794 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 18:34:04,794 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 18:34:04,794 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 18:34:04,795 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 18:34:04,795 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 18:34:04,795 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 18:34:04,795 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 18:34:04,795 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 18:34:04,795 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 18:34:04,796 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 18:34:04,796 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 18:34:04,796 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 18:34:04,796 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 18:34:04,796 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 18:34:04,796 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 18:34:04,797 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 18:34:04,797 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 18:34:04,797 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 18:34:04,797 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:34:04,797 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 18:34:04,797 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 18:34:04,797 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 18:34:04,797 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 18:34:04,797 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:34:04,798 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 18:34:04,798 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 18:34:04,798 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 18:34:04,798 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 18:34:04,798 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 18:34:04,798 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 18:34:04,798 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 18:34:04,798 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 18:34:04,798 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 18:34:04,798 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 18:34:04,798 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_ef9f184a-0bf6-4dc8-9446-7ae9ee8bbf76/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 -> 83293f5c81ac30df7449dd9c03263a4edbba62be916a9a4fda92d2518792b8d4 [2024-11-23 18:34:05,083 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 18:34:05,098 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 18:34:05,100 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 18:34:05,102 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 18:34:05,102 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 18:34:05,103 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef9f184a-0bf6-4dc8-9446-7ae9ee8bbf76/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--usb_8dev.ko-entry_point.cil.out.i [2024-11-23 18:34:08,154 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef9f184a-0bf6-4dc8-9446-7ae9ee8bbf76/bin/uautomizer-verify-LYvppIcaGC/data/56c5bec88/d481adcdfbec434783ccc2680c4d0c44/FLAGc6723d09a [2024-11-23 18:34:08,827 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 18:34:08,828 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef9f184a-0bf6-4dc8-9446-7ae9ee8bbf76/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--usb_8dev.ko-entry_point.cil.out.i [2024-11-23 18:34:08,881 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef9f184a-0bf6-4dc8-9446-7ae9ee8bbf76/bin/uautomizer-verify-LYvppIcaGC/data/56c5bec88/d481adcdfbec434783ccc2680c4d0c44/FLAGc6723d09a [2024-11-23 18:34:08,900 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef9f184a-0bf6-4dc8-9446-7ae9ee8bbf76/bin/uautomizer-verify-LYvppIcaGC/data/56c5bec88/d481adcdfbec434783ccc2680c4d0c44 [2024-11-23 18:34:08,903 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 18:34:08,904 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 18:34:08,906 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 18:34:08,906 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 18:34:08,911 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 18:34:08,912 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:34:08" (1/1) ... [2024-11-23 18:34:08,914 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ca0c447 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:34:08, skipping insertion in model container [2024-11-23 18:34:08,914 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:34:08" (1/1) ... [2024-11-23 18:34:09,032 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 18:34:09,995 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_ef9f184a-0bf6-4dc8-9446-7ae9ee8bbf76/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--usb_8dev.ko-entry_point.cil.out.i[163669,163682] [2024-11-23 18:34:10,443 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 18:34:10,474 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 18:34:10,631 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("bswapl %0": "=r" (val): "0" (val)); [5402] [2024-11-23 18:34:10,637 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"); [5440] [2024-11-23 18:34:10,637 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)); [5447] [2024-11-23 18:34:10,639 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 %2,%1\n\tsbb %0,%0": "=r" (oldbit), "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [5455-5456] [2024-11-23 18:34:10,643 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; incl %0": "+m" (v->counter)); [5484] [2024-11-23 18:34:10,645 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; decl %0": "+m" (v->counter)); [5491] [2024-11-23 18:34:10,664 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_ef9f184a-0bf6-4dc8-9446-7ae9ee8bbf76/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--usb_8dev.ko-entry_point.cil.out.i[163669,163682] [2024-11-23 18:34:10,783 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"/work/ldvuser/mutilin/launch/work/current--X--drivers--X--defaultlinux-3.12-rc1.tar.xz--X--144_2a--X--cpachecker/linux-3.12-rc1.tar.xz/csd_deg_dscv/6228/dscv_tempdir/dscv/ri/144_2a/drivers/net/can/usb/usb_8dev.o.c.prepared"), "i" (621), "i" (12UL)); [6324-6325] [2024-11-23 18:34:10,890 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 18:34:10,974 INFO L204 MainTranslator]: Completed translation [2024-11-23 18:34:10,975 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:34:10 WrapperNode [2024-11-23 18:34:10,977 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 18:34:10,978 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 18:34:10,979 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 18:34:10,979 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 18:34:10,992 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:34:10" (1/1) ... [2024-11-23 18:34:11,054 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:34:10" (1/1) ... [2024-11-23 18:34:11,216 INFO L138 Inliner]: procedures = 174, calls = 830, calls flagged for inlining = 87, calls inlined = 87, statements flattened = 2590 [2024-11-23 18:34:11,216 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 18:34:11,217 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 18:34:11,217 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 18:34:11,217 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 18:34:11,227 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:34:10" (1/1) ... [2024-11-23 18:34:11,227 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:34:10" (1/1) ... [2024-11-23 18:34:11,257 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:34:10" (1/1) ... [2024-11-23 18:34:11,598 INFO L175 MemorySlicer]: Split 464 memory accesses to 8 slices as follows [2, 9, 31, 31, 44, 1, 5, 341]. 73 percent of accesses are in the largest equivalence class. The 28 initializations are split as follows [2, 0, 0, 0, 0, 0, 0, 26]. The 249 writes are split as follows [0, 0, 0, 18, 44, 0, 1, 186]. [2024-11-23 18:34:11,602 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:34:10" (1/1) ... [2024-11-23 18:34:11,602 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:34:10" (1/1) ... [2024-11-23 18:34:11,725 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:34:10" (1/1) ... [2024-11-23 18:34:11,729 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:34:10" (1/1) ... [2024-11-23 18:34:11,754 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:34:10" (1/1) ... [2024-11-23 18:34:11,788 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:34:10" (1/1) ... [2024-11-23 18:34:11,806 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:34:10" (1/1) ... [2024-11-23 18:34:11,833 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 18:34:11,834 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 18:34:11,835 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 18:34:11,835 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 18:34:11,836 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:34:10" (1/1) ... [2024-11-23 18:34:11,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:34:11,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef9f184a-0bf6-4dc8-9446-7ae9ee8bbf76/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:34:11,873 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef9f184a-0bf6-4dc8-9446-7ae9ee8bbf76/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 18:34:11,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef9f184a-0bf6-4dc8-9446-7ae9ee8bbf76/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 18:34:11,907 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2024-11-23 18:34:11,907 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2024-11-23 18:34:11,908 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2024-11-23 18:34:11,908 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2024-11-23 18:34:11,908 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_2 [2024-11-23 18:34:11,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_2 [2024-11-23 18:34:11,908 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_15 [2024-11-23 18:34:11,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_15 [2024-11-23 18:34:11,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-23 18:34:11,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-23 18:34:11,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-23 18:34:11,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-23 18:34:11,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-23 18:34:11,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-23 18:34:11,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2024-11-23 18:34:11,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2024-11-23 18:34:11,909 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_3 [2024-11-23 18:34:11,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_3 [2024-11-23 18:34:11,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#0 [2024-11-23 18:34:11,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#1 [2024-11-23 18:34:11,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#2 [2024-11-23 18:34:11,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#3 [2024-11-23 18:34:11,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#4 [2024-11-23 18:34:11,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#5 [2024-11-23 18:34:11,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#6 [2024-11-23 18:34:11,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#7 [2024-11-23 18:34:11,911 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2024-11-23 18:34:11,911 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2024-11-23 18:34:11,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-23 18:34:11,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-23 18:34:11,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-23 18:34:11,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-23 18:34:11,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-23 18:34:11,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-11-23 18:34:11,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2024-11-23 18:34:11,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2024-11-23 18:34:11,912 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2024-11-23 18:34:11,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2024-11-23 18:34:11,913 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-23 18:34:11,913 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-23 18:34:11,913 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-23 18:34:11,913 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-23 18:34:11,913 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-23 18:34:11,913 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-23 18:34:11,913 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-23 18:34:11,913 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-23 18:34:11,914 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2024-11-23 18:34:11,914 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2024-11-23 18:34:11,914 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2024-11-23 18:34:11,914 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2024-11-23 18:34:11,914 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2024-11-23 18:34:11,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2024-11-23 18:34:11,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#0 [2024-11-23 18:34:11,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#1 [2024-11-23 18:34:11,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#2 [2024-11-23 18:34:11,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#3 [2024-11-23 18:34:11,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#4 [2024-11-23 18:34:11,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#5 [2024-11-23 18:34:11,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#6 [2024-11-23 18:34:11,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#7 [2024-11-23 18:34:11,914 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#0 [2024-11-23 18:34:11,915 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#1 [2024-11-23 18:34:11,915 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#2 [2024-11-23 18:34:11,915 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#3 [2024-11-23 18:34:11,915 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#4 [2024-11-23 18:34:11,915 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#5 [2024-11-23 18:34:11,915 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#6 [2024-11-23 18:34:11,915 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#7 [2024-11-23 18:34:11,916 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2024-11-23 18:34:11,916 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2024-11-23 18:34:11,917 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2024-11-23 18:34:11,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2024-11-23 18:34:11,917 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2024-11-23 18:34:11,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2024-11-23 18:34:11,917 INFO L130 BoogieDeclarations]: Found specification of procedure usb_8dev_read_bulk_callback [2024-11-23 18:34:11,917 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_8dev_read_bulk_callback [2024-11-23 18:34:11,917 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_anchored_urbs [2024-11-23 18:34:11,917 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_anchored_urbs [2024-11-23 18:34:11,917 INFO L130 BoogieDeclarations]: Found specification of procedure init_usb_anchor [2024-11-23 18:34:11,918 INFO L138 BoogieDeclarations]: Found implementation of procedure init_usb_anchor [2024-11-23 18:34:11,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-23 18:34:11,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-23 18:34:11,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-23 18:34:11,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-23 18:34:11,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-23 18:34:11,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-23 18:34:11,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-23 18:34:11,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-23 18:34:11,918 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2024-11-23 18:34:11,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2024-11-23 18:34:11,918 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2024-11-23 18:34:11,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2024-11-23 18:34:11,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-23 18:34:11,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-23 18:34:11,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-23 18:34:11,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#3 [2024-11-23 18:34:11,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#4 [2024-11-23 18:34:11,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#5 [2024-11-23 18:34:11,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#6 [2024-11-23 18:34:11,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#7 [2024-11-23 18:34:11,919 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-23 18:34:11,919 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-23 18:34:11,919 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-23 18:34:11,919 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#3 [2024-11-23 18:34:11,919 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#4 [2024-11-23 18:34:11,919 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#5 [2024-11-23 18:34:11,919 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#6 [2024-11-23 18:34:11,919 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#7 [2024-11-23 18:34:11,919 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-23 18:34:11,919 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-23 18:34:11,920 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2024-11-23 18:34:11,920 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2024-11-23 18:34:11,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-23 18:34:11,920 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2024-11-23 18:34:11,920 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2024-11-23 18:34:11,923 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2024-11-23 18:34:11,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2024-11-23 18:34:11,923 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_all_urbs [2024-11-23 18:34:11,923 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_all_urbs [2024-11-23 18:34:11,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 18:34:11,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2024-11-23 18:34:11,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2024-11-23 18:34:11,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-23 18:34:11,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-23 18:34:11,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-23 18:34:11,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-23 18:34:11,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-23 18:34:11,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-23 18:34:11,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-23 18:34:11,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-23 18:34:11,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-23 18:34:11,925 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2024-11-23 18:34:11,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2024-11-23 18:34:11,925 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2024-11-23 18:34:11,925 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2024-11-23 18:34:11,925 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2024-11-23 18:34:11,925 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2024-11-23 18:34:11,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-23 18:34:11,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-23 18:34:11,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-23 18:34:11,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-23 18:34:11,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-23 18:34:11,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-23 18:34:11,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-23 18:34:11,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-23 18:34:11,927 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2024-11-23 18:34:11,927 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2024-11-23 18:34:11,927 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2024-11-23 18:34:11,927 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2024-11-23 18:34:11,927 INFO L130 BoogieDeclarations]: Found specification of procedure usb_anchor_urb [2024-11-23 18:34:11,927 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_anchor_urb [2024-11-23 18:34:11,927 INFO L130 BoogieDeclarations]: Found specification of procedure can_led_event [2024-11-23 18:34:11,927 INFO L138 BoogieDeclarations]: Found implementation of procedure can_led_event [2024-11-23 18:34:11,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-23 18:34:11,928 INFO L130 BoogieDeclarations]: Found specification of procedure usb_8dev_disconnect [2024-11-23 18:34:11,928 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_8dev_disconnect [2024-11-23 18:34:11,928 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_warn [2024-11-23 18:34:11,928 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_warn [2024-11-23 18:34:11,928 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2024-11-23 18:34:11,928 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2024-11-23 18:34:11,928 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2024-11-23 18:34:11,928 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2024-11-23 18:34:11,928 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unanchor_urb [2024-11-23 18:34:11,929 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unanchor_urb [2024-11-23 18:34:11,929 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2024-11-23 18:34:11,929 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2024-11-23 18:34:11,929 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_info [2024-11-23 18:34:11,929 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_info [2024-11-23 18:34:11,929 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2024-11-23 18:34:11,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2024-11-23 18:34:11,929 INFO L130 BoogieDeclarations]: Found specification of procedure close_candev [2024-11-23 18:34:11,929 INFO L138 BoogieDeclarations]: Found implementation of procedure close_candev [2024-11-23 18:34:11,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 18:34:11,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 18:34:11,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-23 18:34:11,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-23 18:34:11,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-23 18:34:11,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-23 18:34:11,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-23 18:34:11,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-23 18:34:11,930 INFO L130 BoogieDeclarations]: Found specification of procedure free_candev [2024-11-23 18:34:11,930 INFO L138 BoogieDeclarations]: Found implementation of procedure free_candev [2024-11-23 18:34:11,930 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2024-11-23 18:34:11,930 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2024-11-23 18:34:11,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#0 [2024-11-23 18:34:11,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#1 [2024-11-23 18:34:11,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#2 [2024-11-23 18:34:11,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#3 [2024-11-23 18:34:11,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#4 [2024-11-23 18:34:11,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#5 [2024-11-23 18:34:11,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#6 [2024-11-23 18:34:11,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#7 [2024-11-23 18:34:11,930 INFO L130 BoogieDeclarations]: Found specification of procedure usb_8dev_send_cmd [2024-11-23 18:34:11,930 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_8dev_send_cmd [2024-11-23 18:34:11,930 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2024-11-23 18:34:11,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2024-11-23 18:34:11,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 18:34:11,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 18:34:11,931 INFO L130 BoogieDeclarations]: Found specification of procedure usb_8dev_cmd_open [2024-11-23 18:34:11,931 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_8dev_cmd_open [2024-11-23 18:34:12,693 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 18:34:12,697 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 18:34:12,813 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2024-11-23 18:34:14,062 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2024-11-23 18:34:23,981 INFO L? ?]: Removed 1198 outVars from TransFormulas that were not future-live. [2024-11-23 18:34:23,981 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 18:34:24,025 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 18:34:24,025 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-23 18:34:24,025 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:34:24 BoogieIcfgContainer [2024-11-23 18:34:24,026 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 18:34:24,028 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 18:34:24,028 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 18:34:24,033 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 18:34:24,034 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 06:34:08" (1/3) ... [2024-11-23 18:34:24,034 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30399229 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:34:24, skipping insertion in model container [2024-11-23 18:34:24,035 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:34:10" (2/3) ... [2024-11-23 18:34:24,035 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30399229 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:34:24, skipping insertion in model container [2024-11-23 18:34:24,035 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:34:24" (3/3) ... [2024-11-23 18:34:24,036 INFO L128 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--usb_8dev.ko-entry_point.cil.out.i [2024-11-23 18:34:24,053 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 18:34:24,057 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--usb_8dev.ko-entry_point.cil.out.i that has 62 procedures, 876 locations, 1 initial locations, 24 loop locations, and 1 error locations. [2024-11-23 18:34:24,172 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 18:34:24,191 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;@471698a0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 18:34:24,192 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 18:34:24,202 INFO L276 IsEmpty]: Start isEmpty. Operand has 811 states, 609 states have (on average 1.3464696223316912) internal successors, (820), 629 states have internal predecessors, (820), 155 states have call successors, (155), 47 states have call predecessors, (155), 45 states have return successors, (149), 148 states have call predecessors, (149), 149 states have call successors, (149) [2024-11-23 18:34:24,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-23 18:34:24,213 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:34:24,213 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 18:34:24,214 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:34:24,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:34:24,221 INFO L85 PathProgramCache]: Analyzing trace with hash 692818575, now seen corresponding path program 1 times [2024-11-23 18:34:24,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:34:24,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936072024] [2024-11-23 18:34:24,231 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:34:24,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:34:27,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:34:27,872 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 18:34:27,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:34:27,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936072024] [2024-11-23 18:34:27,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936072024] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:34:27,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:34:27,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:34:27,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31422708] [2024-11-23 18:34:27,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:34:27,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:34:27,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:34:27,907 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:34:27,908 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:34:27,912 INFO L87 Difference]: Start difference. First operand has 811 states, 609 states have (on average 1.3464696223316912) internal successors, (820), 629 states have internal predecessors, (820), 155 states have call successors, (155), 47 states have call predecessors, (155), 45 states have return successors, (149), 148 states have call predecessors, (149), 149 states have call successors, (149) Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-23 18:34:31,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-23 18:34:32,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:34:32,535 INFO L93 Difference]: Finished difference Result 2389 states and 3367 transitions. [2024-11-23 18:34:32,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:34:32,538 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2024-11-23 18:34:32,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:34:32,582 INFO L225 Difference]: With dead ends: 2389 [2024-11-23 18:34:32,582 INFO L226 Difference]: Without dead ends: 1559 [2024-11-23 18:34:32,593 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:34:32,601 INFO L435 NwaCegarLoop]: 1102 mSDtfsCounter, 1048 mSDsluCounter, 1075 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1048 SdHoareTripleChecker+Valid, 2177 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-23 18:34:32,603 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1048 Valid, 2177 Invalid, 15 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2024-11-23 18:34:32,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1559 states. [2024-11-23 18:34:32,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1559 to 1559. [2024-11-23 18:34:32,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1559 states, 1181 states have (on average 1.2963590177815412) internal successors, (1531), 1201 states have internal predecessors, (1531), 289 states have call successors, (289), 89 states have call predecessors, (289), 88 states have return successors, (284), 282 states have call predecessors, (284), 284 states have call successors, (284) [2024-11-23 18:34:32,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1559 states to 1559 states and 2104 transitions. [2024-11-23 18:34:32,857 INFO L78 Accepts]: Start accepts. Automaton has 1559 states and 2104 transitions. Word has length 28 [2024-11-23 18:34:32,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:34:32,860 INFO L471 AbstractCegarLoop]: Abstraction has 1559 states and 2104 transitions. [2024-11-23 18:34:32,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-23 18:34:32,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1559 states and 2104 transitions. [2024-11-23 18:34:32,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-23 18:34:32,865 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:34:32,866 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:34:32,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 18:34:32,866 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:34:32,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:34:32,867 INFO L85 PathProgramCache]: Analyzing trace with hash -225970067, now seen corresponding path program 1 times [2024-11-23 18:34:32,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:34:32,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254532153] [2024-11-23 18:34:32,868 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:34:32,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:34:35,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:34:36,096 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 18:34:36,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:34:36,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254532153] [2024-11-23 18:34:36,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254532153] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:34:36,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:34:36,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:34:36,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175734815] [2024-11-23 18:34:36,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:34:36,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:34:36,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:34:36,103 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:34:36,103 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:34:36,104 INFO L87 Difference]: Start difference. First operand 1559 states and 2104 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-23 18:34:36,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:34:36,519 INFO L93 Difference]: Finished difference Result 4662 states and 6317 transitions. [2024-11-23 18:34:36,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:34:36,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 38 [2024-11-23 18:34:36,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:34:36,551 INFO L225 Difference]: With dead ends: 4662 [2024-11-23 18:34:36,551 INFO L226 Difference]: Without dead ends: 3110 [2024-11-23 18:34:36,558 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:34:36,560 INFO L435 NwaCegarLoop]: 1601 mSDtfsCounter, 1047 mSDsluCounter, 1053 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1047 SdHoareTripleChecker+Valid, 2654 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 18:34:36,560 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1047 Valid, 2654 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 18:34:36,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3110 states. [2024-11-23 18:34:36,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3110 to 3100. [2024-11-23 18:34:36,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3100 states, 2352 states have (on average 1.2950680272108843) internal successors, (3046), 2388 states have internal predecessors, (3046), 571 states have call successors, (571), 177 states have call predecessors, (571), 176 states have return successors, (580), 562 states have call predecessors, (580), 566 states have call successors, (580) [2024-11-23 18:34:36,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3100 states to 3100 states and 4197 transitions. [2024-11-23 18:34:36,817 INFO L78 Accepts]: Start accepts. Automaton has 3100 states and 4197 transitions. Word has length 38 [2024-11-23 18:34:36,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:34:36,819 INFO L471 AbstractCegarLoop]: Abstraction has 3100 states and 4197 transitions. [2024-11-23 18:34:36,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-23 18:34:36,819 INFO L276 IsEmpty]: Start isEmpty. Operand 3100 states and 4197 transitions. [2024-11-23 18:34:36,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-23 18:34:36,821 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:34:36,822 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:34:36,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 18:34:36,822 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:34:36,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:34:36,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1584445831, now seen corresponding path program 1 times [2024-11-23 18:34:36,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:34:36,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324610171] [2024-11-23 18:34:36,823 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:34:36,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:34:38,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:34:39,667 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 18:34:39,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:34:39,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324610171] [2024-11-23 18:34:39,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324610171] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:34:39,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:34:39,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:34:39,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480998062] [2024-11-23 18:34:39,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:34:39,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:34:39,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:34:39,671 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:34:39,671 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:34:39,671 INFO L87 Difference]: Start difference. First operand 3100 states and 4197 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-23 18:34:39,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:34:39,900 INFO L93 Difference]: Finished difference Result 3102 states and 4198 transitions. [2024-11-23 18:34:39,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:34:39,900 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2024-11-23 18:34:39,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:34:39,931 INFO L225 Difference]: With dead ends: 3102 [2024-11-23 18:34:39,931 INFO L226 Difference]: Without dead ends: 3099 [2024-11-23 18:34:39,934 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:34:39,936 INFO L435 NwaCegarLoop]: 1071 mSDtfsCounter, 1048 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1048 SdHoareTripleChecker+Valid, 1071 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:34:39,938 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1048 Valid, 1071 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:34:39,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3099 states. [2024-11-23 18:34:40,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3099 to 3099. [2024-11-23 18:34:40,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3099 states, 2352 states have (on average 1.2946428571428572) internal successors, (3045), 2387 states have internal predecessors, (3045), 570 states have call successors, (570), 177 states have call predecessors, (570), 176 states have return successors, (580), 562 states have call predecessors, (580), 566 states have call successors, (580) [2024-11-23 18:34:40,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3099 states to 3099 states and 4195 transitions. [2024-11-23 18:34:40,273 INFO L78 Accepts]: Start accepts. Automaton has 3099 states and 4195 transitions. Word has length 39 [2024-11-23 18:34:40,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:34:40,274 INFO L471 AbstractCegarLoop]: Abstraction has 3099 states and 4195 transitions. [2024-11-23 18:34:40,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-23 18:34:40,274 INFO L276 IsEmpty]: Start isEmpty. Operand 3099 states and 4195 transitions. [2024-11-23 18:34:40,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-23 18:34:40,280 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:34:40,280 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:34:40,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 18:34:40,281 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:34:40,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:34:40,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1872768688, now seen corresponding path program 1 times [2024-11-23 18:34:40,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:34:40,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806271267] [2024-11-23 18:34:40,283 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:34:40,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:34:42,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:34:42,245 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 18:34:42,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:34:42,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806271267] [2024-11-23 18:34:42,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806271267] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:34:42,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:34:42,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:34:42,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919584292] [2024-11-23 18:34:42,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:34:42,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:34:42,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:34:42,247 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:34:42,247 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:34:42,247 INFO L87 Difference]: Start difference. First operand 3099 states and 4195 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-23 18:34:42,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:34:42,400 INFO L93 Difference]: Finished difference Result 3101 states and 4196 transitions. [2024-11-23 18:34:42,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:34:42,400 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2024-11-23 18:34:42,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:34:42,423 INFO L225 Difference]: With dead ends: 3101 [2024-11-23 18:34:42,423 INFO L226 Difference]: Without dead ends: 3098 [2024-11-23 18:34:42,426 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:34:42,427 INFO L435 NwaCegarLoop]: 1069 mSDtfsCounter, 1045 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1045 SdHoareTripleChecker+Valid, 1069 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:34:42,427 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1045 Valid, 1069 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:34:42,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3098 states. [2024-11-23 18:34:42,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3098 to 3098. [2024-11-23 18:34:42,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3098 states, 2352 states have (on average 1.2942176870748299) internal successors, (3044), 2386 states have internal predecessors, (3044), 569 states have call successors, (569), 177 states have call predecessors, (569), 176 states have return successors, (580), 562 states have call predecessors, (580), 566 states have call successors, (580) [2024-11-23 18:34:42,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3098 states to 3098 states and 4193 transitions. [2024-11-23 18:34:42,654 INFO L78 Accepts]: Start accepts. Automaton has 3098 states and 4193 transitions. Word has length 40 [2024-11-23 18:34:42,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:34:42,654 INFO L471 AbstractCegarLoop]: Abstraction has 3098 states and 4193 transitions. [2024-11-23 18:34:42,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-23 18:34:42,655 INFO L276 IsEmpty]: Start isEmpty. Operand 3098 states and 4193 transitions. [2024-11-23 18:34:42,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-23 18:34:42,656 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:34:42,656 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:34:42,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 18:34:42,657 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:34:42,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:34:42,657 INFO L85 PathProgramCache]: Analyzing trace with hash -2074119766, now seen corresponding path program 1 times [2024-11-23 18:34:42,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:34:42,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017315096] [2024-11-23 18:34:42,657 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:34:42,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:34:44,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:34:44,744 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 18:34:44,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:34:44,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017315096] [2024-11-23 18:34:44,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017315096] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:34:44,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:34:44,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:34:44,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695594243] [2024-11-23 18:34:44,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:34:44,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:34:44,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:34:44,746 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:34:44,746 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:34:44,746 INFO L87 Difference]: Start difference. First operand 3098 states and 4193 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-23 18:34:44,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:34:44,922 INFO L93 Difference]: Finished difference Result 3100 states and 4194 transitions. [2024-11-23 18:34:44,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:34:44,923 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 41 [2024-11-23 18:34:44,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:34:44,946 INFO L225 Difference]: With dead ends: 3100 [2024-11-23 18:34:44,947 INFO L226 Difference]: Without dead ends: 3097 [2024-11-23 18:34:44,949 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:34:44,950 INFO L435 NwaCegarLoop]: 1067 mSDtfsCounter, 1042 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1042 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:34:44,951 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1042 Valid, 1067 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:34:44,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3097 states. [2024-11-23 18:34:45,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3097 to 3097. [2024-11-23 18:34:45,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3097 states, 2352 states have (on average 1.2937925170068028) internal successors, (3043), 2385 states have internal predecessors, (3043), 568 states have call successors, (568), 177 states have call predecessors, (568), 176 states have return successors, (580), 562 states have call predecessors, (580), 566 states have call successors, (580) [2024-11-23 18:34:45,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3097 states to 3097 states and 4191 transitions. [2024-11-23 18:34:45,188 INFO L78 Accepts]: Start accepts. Automaton has 3097 states and 4191 transitions. Word has length 41 [2024-11-23 18:34:45,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:34:45,188 INFO L471 AbstractCegarLoop]: Abstraction has 3097 states and 4191 transitions. [2024-11-23 18:34:45,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-23 18:34:45,189 INFO L276 IsEmpty]: Start isEmpty. Operand 3097 states and 4191 transitions. [2024-11-23 18:34:45,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-23 18:34:45,191 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:34:45,192 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:34:45,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 18:34:45,192 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:34:45,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:34:45,192 INFO L85 PathProgramCache]: Analyzing trace with hash 126394611, now seen corresponding path program 1 times [2024-11-23 18:34:45,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:34:45,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799451648] [2024-11-23 18:34:45,193 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:34:45,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:34:46,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:34:46,899 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 18:34:46,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:34:46,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799451648] [2024-11-23 18:34:46,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799451648] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:34:46,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:34:46,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:34:46,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597371865] [2024-11-23 18:34:46,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:34:46,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:34:46,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:34:46,902 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:34:46,902 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:34:46,902 INFO L87 Difference]: Start difference. First operand 3097 states and 4191 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-23 18:34:47,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:34:47,085 INFO L93 Difference]: Finished difference Result 3099 states and 4192 transitions. [2024-11-23 18:34:47,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:34:47,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 42 [2024-11-23 18:34:47,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:34:47,109 INFO L225 Difference]: With dead ends: 3099 [2024-11-23 18:34:47,109 INFO L226 Difference]: Without dead ends: 3087 [2024-11-23 18:34:47,112 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:34:47,114 INFO L435 NwaCegarLoop]: 1066 mSDtfsCounter, 1039 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1039 SdHoareTripleChecker+Valid, 1066 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:34:47,114 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1039 Valid, 1066 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:34:47,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3087 states. [2024-11-23 18:34:47,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3087 to 3087. [2024-11-23 18:34:47,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3087 states, 2343 states have (on average 1.293213828425096) internal successors, (3030), 2375 states have internal predecessors, (3030), 567 states have call successors, (567), 177 states have call predecessors, (567), 176 states have return successors, (580), 562 states have call predecessors, (580), 566 states have call successors, (580) [2024-11-23 18:34:47,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3087 states to 3087 states and 4177 transitions. [2024-11-23 18:34:47,373 INFO L78 Accepts]: Start accepts. Automaton has 3087 states and 4177 transitions. Word has length 42 [2024-11-23 18:34:47,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:34:47,374 INFO L471 AbstractCegarLoop]: Abstraction has 3087 states and 4177 transitions. [2024-11-23 18:34:47,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-23 18:34:47,376 INFO L276 IsEmpty]: Start isEmpty. Operand 3087 states and 4177 transitions. [2024-11-23 18:34:47,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-23 18:34:47,389 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:34:47,389 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2024-11-23 18:34:47,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 18:34:47,391 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:34:47,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:34:47,392 INFO L85 PathProgramCache]: Analyzing trace with hash 461175421, now seen corresponding path program 1 times [2024-11-23 18:34:47,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:34:47,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970094231] [2024-11-23 18:34:47,392 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:34:47,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:34:49,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:34:49,541 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 18:34:49,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:34:49,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970094231] [2024-11-23 18:34:49,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970094231] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:34:49,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:34:49,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:34:49,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610691014] [2024-11-23 18:34:49,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:34:49,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:34:49,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:34:49,544 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:34:49,545 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:34:49,546 INFO L87 Difference]: Start difference. First operand 3087 states and 4177 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-23 18:34:50,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:34:50,087 INFO L93 Difference]: Finished difference Result 7080 states and 9490 transitions. [2024-11-23 18:34:50,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:34:50,088 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 87 [2024-11-23 18:34:50,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:34:50,123 INFO L225 Difference]: With dead ends: 7080 [2024-11-23 18:34:50,123 INFO L226 Difference]: Without dead ends: 4000 [2024-11-23 18:34:50,139 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:34:50,141 INFO L435 NwaCegarLoop]: 1156 mSDtfsCounter, 302 mSDsluCounter, 1035 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 2191 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 18:34:50,142 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 2191 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 18:34:50,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4000 states. [2024-11-23 18:34:50,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4000 to 3992. [2024-11-23 18:34:50,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3992 states, 3028 states have (on average 1.2793923381770145) internal successors, (3874), 3068 states have internal predecessors, (3874), 712 states have call successors, (712), 252 states have call predecessors, (712), 251 states have return successors, (725), 707 states have call predecessors, (725), 711 states have call successors, (725) [2024-11-23 18:34:50,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3992 states to 3992 states and 5311 transitions. [2024-11-23 18:34:50,660 INFO L78 Accepts]: Start accepts. Automaton has 3992 states and 5311 transitions. Word has length 87 [2024-11-23 18:34:50,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:34:50,661 INFO L471 AbstractCegarLoop]: Abstraction has 3992 states and 5311 transitions. [2024-11-23 18:34:50,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-23 18:34:50,661 INFO L276 IsEmpty]: Start isEmpty. Operand 3992 states and 5311 transitions. [2024-11-23 18:34:50,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-23 18:34:50,674 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:34:50,675 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 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] [2024-11-23 18:34:50,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 18:34:50,676 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:34:50,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:34:50,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1577639954, now seen corresponding path program 1 times [2024-11-23 18:34:50,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:34:50,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520391532] [2024-11-23 18:34:50,677 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:34:50,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:34:52,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:34:53,171 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-23 18:34:53,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:34:53,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520391532] [2024-11-23 18:34:53,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520391532] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:34:53,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:34:53,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:34:53,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81446813] [2024-11-23 18:34:53,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:34:53,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:34:53,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:34:53,173 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:34:53,173 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:34:53,174 INFO L87 Difference]: Start difference. First operand 3992 states and 5311 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-23 18:34:57,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-23 18:34:57,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:34:57,769 INFO L93 Difference]: Finished difference Result 8924 states and 11830 transitions. [2024-11-23 18:34:57,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:34:57,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 103 [2024-11-23 18:34:57,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:34:57,807 INFO L225 Difference]: With dead ends: 8924 [2024-11-23 18:34:57,807 INFO L226 Difference]: Without dead ends: 4946 [2024-11-23 18:34:57,823 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:34:57,824 INFO L435 NwaCegarLoop]: 1353 mSDtfsCounter, 310 mSDsluCounter, 1036 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 2389 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-23 18:34:57,824 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 2389 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 22 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2024-11-23 18:34:57,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4946 states. [2024-11-23 18:34:58,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4946 to 4938. [2024-11-23 18:34:58,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4938 states, 3756 states have (on average 1.2726304579339722) internal successors, (4780), 3804 states have internal predecessors, (4780), 856 states have call successors, (856), 326 states have call predecessors, (856), 325 states have return successors, (869), 851 states have call predecessors, (869), 855 states have call successors, (869) [2024-11-23 18:34:58,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4938 states to 4938 states and 6505 transitions. [2024-11-23 18:34:58,199 INFO L78 Accepts]: Start accepts. Automaton has 4938 states and 6505 transitions. Word has length 103 [2024-11-23 18:34:58,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:34:58,199 INFO L471 AbstractCegarLoop]: Abstraction has 4938 states and 6505 transitions. [2024-11-23 18:34:58,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-23 18:34:58,200 INFO L276 IsEmpty]: Start isEmpty. Operand 4938 states and 6505 transitions. [2024-11-23 18:34:58,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-23 18:34:58,207 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:34:58,207 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2024-11-23 18:34:58,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 18:34:58,210 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:34:58,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:34:58,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1585331519, now seen corresponding path program 1 times [2024-11-23 18:34:58,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:34:58,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103855490] [2024-11-23 18:34:58,211 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:34:58,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:34:59,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:35:00,295 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-23 18:35:00,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:35:00,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103855490] [2024-11-23 18:35:00,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103855490] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:35:00,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:35:00,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:35:00,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189189076] [2024-11-23 18:35:00,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:35:00,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:35:00,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:35:00,298 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:35:00,298 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:35:00,299 INFO L87 Difference]: Start difference. First operand 4938 states and 6505 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-23 18:35:04,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-23 18:35:04,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:35:04,922 INFO L93 Difference]: Finished difference Result 11924 states and 15644 transitions. [2024-11-23 18:35:04,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:35:04,923 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 115 [2024-11-23 18:35:04,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:35:05,002 INFO L225 Difference]: With dead ends: 11924 [2024-11-23 18:35:05,003 INFO L226 Difference]: Without dead ends: 7000 [2024-11-23 18:35:05,023 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:35:05,024 INFO L435 NwaCegarLoop]: 1367 mSDtfsCounter, 838 mSDsluCounter, 869 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 838 SdHoareTripleChecker+Valid, 2236 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-23 18:35:05,024 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [838 Valid, 2236 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 22 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2024-11-23 18:35:05,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7000 states. [2024-11-23 18:35:05,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7000 to 6992. [2024-11-23 18:35:05,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6992 states, 5364 states have (on average 1.2751677852348993) internal successors, (6840), 5436 states have internal predecessors, (6840), 1136 states have call successors, (1136), 492 states have call predecessors, (1136), 491 states have return successors, (1149), 1127 states have call predecessors, (1149), 1135 states have call successors, (1149) [2024-11-23 18:35:05,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6992 states to 6992 states and 9125 transitions. [2024-11-23 18:35:05,538 INFO L78 Accepts]: Start accepts. Automaton has 6992 states and 9125 transitions. Word has length 115 [2024-11-23 18:35:05,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:35:05,540 INFO L471 AbstractCegarLoop]: Abstraction has 6992 states and 9125 transitions. [2024-11-23 18:35:05,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-23 18:35:05,541 INFO L276 IsEmpty]: Start isEmpty. Operand 6992 states and 9125 transitions. [2024-11-23 18:35:05,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-23 18:35:05,551 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:35:05,552 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:35:05,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 18:35:05,552 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:35:05,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:35:05,556 INFO L85 PathProgramCache]: Analyzing trace with hash 744643300, now seen corresponding path program 1 times [2024-11-23 18:35:05,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:35:05,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672925841] [2024-11-23 18:35:05,556 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:35:05,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:35:07,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:35:08,192 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-23 18:35:08,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:35:08,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672925841] [2024-11-23 18:35:08,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672925841] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:35:08,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973135235] [2024-11-23 18:35:08,193 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:35:08,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:35:08,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef9f184a-0bf6-4dc8-9446-7ae9ee8bbf76/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:35:08,199 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef9f184a-0bf6-4dc8-9446-7ae9ee8bbf76/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:35:08,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef9f184a-0bf6-4dc8-9446-7ae9ee8bbf76/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 18:35:11,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:35:11,281 INFO L256 TraceCheckSpWp]: Trace formula consists of 1937 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 18:35:11,292 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:35:12,494 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-23 18:35:12,494 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:35:12,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973135235] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:35:12,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:35:12,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2024-11-23 18:35:12,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742145597] [2024-11-23 18:35:12,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:35:12,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:35:12,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:35:12,496 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:35:12,496 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:35:12,496 INFO L87 Difference]: Start difference. First operand 6992 states and 9125 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 4 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 18:35:16,527 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-23 18:35:20,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:35:20,924 INFO L93 Difference]: Finished difference Result 20950 states and 27342 transitions. [2024-11-23 18:35:20,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 18:35:20,925 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 4 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 135 [2024-11-23 18:35:20,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:35:21,073 INFO L225 Difference]: With dead ends: 20950 [2024-11-23 18:35:21,074 INFO L226 Difference]: Without dead ends: 20942 [2024-11-23 18:35:21,088 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:35:21,089 INFO L435 NwaCegarLoop]: 1284 mSDtfsCounter, 2543 mSDsluCounter, 1809 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 217 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2543 SdHoareTripleChecker+Valid, 3093 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2024-11-23 18:35:21,090 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2543 Valid, 3093 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 310 Invalid, 1 Unknown, 0 Unchecked, 7.2s Time] [2024-11-23 18:35:21,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20942 states. [2024-11-23 18:35:22,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20942 to 20908. [2024-11-23 18:35:22,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20908 states, 16036 states have (on average 1.2757545522574207) internal successors, (20458), 16268 states have internal predecessors, (20458), 3400 states have call successors, (3400), 1472 states have call predecessors, (3400), 1471 states have return successors, (3441), 3359 states have call predecessors, (3441), 3399 states have call successors, (3441) [2024-11-23 18:35:22,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20908 states to 20908 states and 27299 transitions. [2024-11-23 18:35:22,936 INFO L78 Accepts]: Start accepts. Automaton has 20908 states and 27299 transitions. Word has length 135 [2024-11-23 18:35:22,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:35:22,937 INFO L471 AbstractCegarLoop]: Abstraction has 20908 states and 27299 transitions. [2024-11-23 18:35:22,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 4 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 18:35:22,938 INFO L276 IsEmpty]: Start isEmpty. Operand 20908 states and 27299 transitions. [2024-11-23 18:35:22,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-23 18:35:22,965 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:35:22,966 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 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] [2024-11-23 18:35:22,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef9f184a-0bf6-4dc8-9446-7ae9ee8bbf76/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-23 18:35:23,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef9f184a-0bf6-4dc8-9446-7ae9ee8bbf76/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:35:23,167 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:35:23,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:35:23,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1380705662, now seen corresponding path program 1 times [2024-11-23 18:35:23,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:35:23,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706483441] [2024-11-23 18:35:23,168 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:35:23,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:35:24,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:35:25,075 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-23 18:35:25,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:35:25,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706483441] [2024-11-23 18:35:25,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706483441] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:35:25,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:35:25,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:35:25,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751940019] [2024-11-23 18:35:25,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:35:25,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:35:25,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:35:25,080 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:35:25,080 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:35:25,080 INFO L87 Difference]: Start difference. First operand 20908 states and 27299 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-23 18:35:29,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-23 18:35:29,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:35:29,983 INFO L93 Difference]: Finished difference Result 31878 states and 41617 transitions. [2024-11-23 18:35:29,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:35:29,984 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 145 [2024-11-23 18:35:29,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:35:30,063 INFO L225 Difference]: With dead ends: 31878 [2024-11-23 18:35:30,063 INFO L226 Difference]: Without dead ends: 10334 [2024-11-23 18:35:30,122 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:35:30,123 INFO L435 NwaCegarLoop]: 1251 mSDtfsCounter, 989 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 989 SdHoareTripleChecker+Valid, 1547 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:35:30,123 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [989 Valid, 1547 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2024-11-23 18:35:30,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10334 states. [2024-11-23 18:35:30,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10334 to 10334. [2024-11-23 18:35:30,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10334 states, 7921 states have (on average 1.273071581870976) internal successors, (10084), 8037 states have internal predecessors, (10084), 1684 states have call successors, (1684), 729 states have call predecessors, (1684), 728 states have return successors, (1704), 1663 states have call predecessors, (1704), 1683 states have call successors, (1704) [2024-11-23 18:35:30,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10334 states to 10334 states and 13472 transitions. [2024-11-23 18:35:30,862 INFO L78 Accepts]: Start accepts. Automaton has 10334 states and 13472 transitions. Word has length 145 [2024-11-23 18:35:30,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:35:30,863 INFO L471 AbstractCegarLoop]: Abstraction has 10334 states and 13472 transitions. [2024-11-23 18:35:30,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-23 18:35:30,863 INFO L276 IsEmpty]: Start isEmpty. Operand 10334 states and 13472 transitions. [2024-11-23 18:35:30,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-23 18:35:30,880 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:35:30,880 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:35:30,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-23 18:35:30,881 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:35:30,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:35:30,881 INFO L85 PathProgramCache]: Analyzing trace with hash -240549902, now seen corresponding path program 1 times [2024-11-23 18:35:30,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:35:30,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222921590] [2024-11-23 18:35:30,882 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:35:30,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:35:32,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:35:33,015 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-23 18:35:33,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:35:33,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222921590] [2024-11-23 18:35:33,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222921590] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:35:33,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:35:33,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:35:33,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453045494] [2024-11-23 18:35:33,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:35:33,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:35:33,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:35:33,018 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:35:33,018 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:35:33,018 INFO L87 Difference]: Start difference. First operand 10334 states and 13472 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 18:35:37,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-23 18:35:38,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:35:38,080 INFO L93 Difference]: Finished difference Result 19280 states and 25212 transitions. [2024-11-23 18:35:38,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:35:38,081 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 147 [2024-11-23 18:35:38,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:35:38,149 INFO L225 Difference]: With dead ends: 19280 [2024-11-23 18:35:38,150 INFO L226 Difference]: Without dead ends: 9692 [2024-11-23 18:35:38,186 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:35:38,187 INFO L435 NwaCegarLoop]: 1624 mSDtfsCounter, 832 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 832 SdHoareTripleChecker+Valid, 2475 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-23 18:35:38,188 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [832 Valid, 2475 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 21 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2024-11-23 18:35:38,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9692 states. [2024-11-23 18:35:39,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9692 to 9684. [2024-11-23 18:35:39,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9684 states, 7430 states have (on average 1.2714670255720053) internal successors, (9447), 7539 states have internal predecessors, (9447), 1579 states have call successors, (1579), 675 states have call predecessors, (1579), 674 states have return successors, (1599), 1559 states have call predecessors, (1599), 1578 states have call successors, (1599) [2024-11-23 18:35:39,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9684 states to 9684 states and 12625 transitions. [2024-11-23 18:35:39,097 INFO L78 Accepts]: Start accepts. Automaton has 9684 states and 12625 transitions. Word has length 147 [2024-11-23 18:35:39,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:35:39,098 INFO L471 AbstractCegarLoop]: Abstraction has 9684 states and 12625 transitions. [2024-11-23 18:35:39,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 18:35:39,099 INFO L276 IsEmpty]: Start isEmpty. Operand 9684 states and 12625 transitions. [2024-11-23 18:35:39,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-23 18:35:39,115 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:35:39,115 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:35:39,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-23 18:35:39,116 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:35:39,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:35:39,117 INFO L85 PathProgramCache]: Analyzing trace with hash -178510288, now seen corresponding path program 1 times [2024-11-23 18:35:39,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:35:39,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918378087] [2024-11-23 18:35:39,117 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:35:39,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:35:40,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:35:40,948 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-23 18:35:40,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:35:40,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918378087] [2024-11-23 18:35:40,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918378087] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:35:40,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:35:40,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 18:35:40,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164176698] [2024-11-23 18:35:40,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:35:40,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:35:40,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:35:40,950 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:35:40,950 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:35:40,951 INFO L87 Difference]: Start difference. First operand 9684 states and 12625 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 18:35:41,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:35:41,915 INFO L93 Difference]: Finished difference Result 23758 states and 31015 transitions. [2024-11-23 18:35:41,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:35:41,916 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 147 [2024-11-23 18:35:41,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:35:41,999 INFO L225 Difference]: With dead ends: 23758 [2024-11-23 18:35:42,000 INFO L226 Difference]: Without dead ends: 14820 [2024-11-23 18:35:42,025 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:35:42,025 INFO L435 NwaCegarLoop]: 1060 mSDtfsCounter, 1056 mSDsluCounter, 1886 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1056 SdHoareTripleChecker+Valid, 2946 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:35:42,026 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1056 Valid, 2946 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:35:42,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14820 states. [2024-11-23 18:35:43,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14820 to 14758. [2024-11-23 18:35:43,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14758 states, 11340 states have (on average 1.2731922398589066) internal successors, (14438), 11513 states have internal predecessors, (14438), 2389 states have call successors, (2389), 1029 states have call predecessors, (2389), 1028 states have return successors, (2421), 2347 states have call predecessors, (2421), 2388 states have call successors, (2421) [2024-11-23 18:35:43,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14758 states to 14758 states and 19248 transitions. [2024-11-23 18:35:43,454 INFO L78 Accepts]: Start accepts. Automaton has 14758 states and 19248 transitions. Word has length 147 [2024-11-23 18:35:43,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:35:43,455 INFO L471 AbstractCegarLoop]: Abstraction has 14758 states and 19248 transitions. [2024-11-23 18:35:43,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-23 18:35:43,456 INFO L276 IsEmpty]: Start isEmpty. Operand 14758 states and 19248 transitions. [2024-11-23 18:35:43,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-23 18:35:43,485 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:35:43,485 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:35:43,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-23 18:35:43,485 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:35:43,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:35:43,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1406441504, now seen corresponding path program 1 times [2024-11-23 18:35:43,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:35:43,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545911597] [2024-11-23 18:35:43,486 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:35:43,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:35:45,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:35:46,536 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-23 18:35:46,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:35:46,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545911597] [2024-11-23 18:35:46,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545911597] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:35:46,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:35:46,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 18:35:46,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519620008] [2024-11-23 18:35:46,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:35:46,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:35:46,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:35:46,538 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:35:46,538 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:35:46,539 INFO L87 Difference]: Start difference. First operand 14758 states and 19248 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 18:35:47,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:35:47,184 INFO L93 Difference]: Finished difference Result 28980 states and 37991 transitions. [2024-11-23 18:35:47,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:35:47,184 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) Word has length 147 [2024-11-23 18:35:47,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:35:47,278 INFO L225 Difference]: With dead ends: 28980 [2024-11-23 18:35:47,278 INFO L226 Difference]: Without dead ends: 14968 [2024-11-23 18:35:47,315 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:35:47,315 INFO L435 NwaCegarLoop]: 1058 mSDtfsCounter, 3 mSDsluCounter, 3170 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 4228 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:35:47,316 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 4228 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:35:47,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14968 states. [2024-11-23 18:35:48,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14968 to 14911. [2024-11-23 18:35:48,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14911 states, 11448 states have (on average 1.2721872816212438) internal successors, (14564), 11630 states have internal predecessors, (14564), 2407 states have call successors, (2407), 1029 states have call predecessors, (2407), 1055 states have return successors, (2574), 2383 states have call predecessors, (2574), 2406 states have call successors, (2574) [2024-11-23 18:35:48,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14911 states to 14911 states and 19545 transitions. [2024-11-23 18:35:48,429 INFO L78 Accepts]: Start accepts. Automaton has 14911 states and 19545 transitions. Word has length 147 [2024-11-23 18:35:48,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:35:48,430 INFO L471 AbstractCegarLoop]: Abstraction has 14911 states and 19545 transitions. [2024-11-23 18:35:48,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 18:35:48,430 INFO L276 IsEmpty]: Start isEmpty. Operand 14911 states and 19545 transitions. [2024-11-23 18:35:48,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-23 18:35:48,448 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:35:48,448 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:35:48,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-23 18:35:48,449 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:35:48,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:35:48,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1231457088, now seen corresponding path program 1 times [2024-11-23 18:35:48,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:35:48,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009820706] [2024-11-23 18:35:48,450 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:35:48,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:35:50,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:35:54,550 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-23 18:35:54,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:35:54,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009820706] [2024-11-23 18:35:54,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009820706] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:35:54,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:35:54,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-23 18:35:54,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696809464] [2024-11-23 18:35:54,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:35:54,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 18:35:54,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:35:54,552 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 18:35:54,553 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-23 18:35:54,553 INFO L87 Difference]: Start difference. First operand 14911 states and 19545 transitions. Second operand has 12 states, 12 states have (on average 8.583333333333334) internal successors, (103), 10 states have internal predecessors, (103), 5 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-23 18:36:05,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:36:05,308 INFO L93 Difference]: Finished difference Result 36242 states and 47579 transitions. [2024-11-23 18:36:05,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-23 18:36:05,309 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.583333333333334) internal successors, (103), 10 states have internal predecessors, (103), 5 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) Word has length 153 [2024-11-23 18:36:05,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:36:05,418 INFO L225 Difference]: With dead ends: 36242 [2024-11-23 18:36:05,419 INFO L226 Difference]: Without dead ends: 22072 [2024-11-23 18:36:05,460 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=126, Invalid=474, Unknown=0, NotChecked=0, Total=600 [2024-11-23 18:36:05,460 INFO L435 NwaCegarLoop]: 1357 mSDtfsCounter, 3263 mSDsluCounter, 8282 mSDsCounter, 0 mSdLazyCounter, 1350 mSolverCounterSat, 540 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3277 SdHoareTripleChecker+Valid, 9639 SdHoareTripleChecker+Invalid, 1890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 540 IncrementalHoareTripleChecker+Valid, 1350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:36:05,461 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3277 Valid, 9639 Invalid, 1890 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [540 Valid, 1350 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2024-11-23 18:36:05,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22072 states. [2024-11-23 18:36:06,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22072 to 21964. [2024-11-23 18:36:06,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21964 states, 16872 states have (on average 1.2728781412991939) internal successors, (21476), 17137 states have internal predecessors, (21476), 3544 states have call successors, (3544), 1512 states have call predecessors, (3544), 1547 states have return successors, (3783), 3509 states have call predecessors, (3783), 3543 states have call successors, (3783) [2024-11-23 18:36:06,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21964 states to 21964 states and 28803 transitions. [2024-11-23 18:36:06,964 INFO L78 Accepts]: Start accepts. Automaton has 21964 states and 28803 transitions. Word has length 153 [2024-11-23 18:36:06,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:36:06,965 INFO L471 AbstractCegarLoop]: Abstraction has 21964 states and 28803 transitions. [2024-11-23 18:36:06,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.583333333333334) internal successors, (103), 10 states have internal predecessors, (103), 5 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-23 18:36:06,965 INFO L276 IsEmpty]: Start isEmpty. Operand 21964 states and 28803 transitions. [2024-11-23 18:36:06,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-23 18:36:06,983 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:36:06,983 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:36:06,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-23 18:36:06,984 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:36:06,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:36:06,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1630456095, now seen corresponding path program 1 times [2024-11-23 18:36:06,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:36:06,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487559076] [2024-11-23 18:36:06,985 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:36:06,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:36:08,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:36:08,750 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-23 18:36:08,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:36:08,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487559076] [2024-11-23 18:36:08,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487559076] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:36:08,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:36:08,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:36:08,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529757952] [2024-11-23 18:36:08,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:36:08,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:36:08,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:36:08,752 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:36:08,752 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:36:08,753 INFO L87 Difference]: Start difference. First operand 21964 states and 28803 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 18:36:11,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:36:11,023 INFO L93 Difference]: Finished difference Result 59334 states and 77934 transitions. [2024-11-23 18:36:11,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:36:11,024 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 157 [2024-11-23 18:36:11,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:36:11,176 INFO L225 Difference]: With dead ends: 59334 [2024-11-23 18:36:11,176 INFO L226 Difference]: Without dead ends: 37388 [2024-11-23 18:36:11,226 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:36:11,226 INFO L435 NwaCegarLoop]: 1415 mSDtfsCounter, 928 mSDsluCounter, 1035 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 928 SdHoareTripleChecker+Valid, 2450 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:36:11,227 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [928 Valid, 2450 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:36:11,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37388 states. [2024-11-23 18:36:13,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37388 to 28883. [2024-11-23 18:36:13,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28883 states, 22217 states have (on average 1.2768150515371113) internal successors, (28367), 22558 states have internal predecessors, (28367), 4610 states have call successors, (4610), 2004 states have call predecessors, (4610), 2055 states have return successors, (4919), 4575 states have call predecessors, (4919), 4609 states have call successors, (4919) [2024-11-23 18:36:13,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28883 states to 28883 states and 37896 transitions. [2024-11-23 18:36:13,886 INFO L78 Accepts]: Start accepts. Automaton has 28883 states and 37896 transitions. Word has length 157 [2024-11-23 18:36:13,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:36:13,886 INFO L471 AbstractCegarLoop]: Abstraction has 28883 states and 37896 transitions. [2024-11-23 18:36:13,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-23 18:36:13,887 INFO L276 IsEmpty]: Start isEmpty. Operand 28883 states and 37896 transitions. [2024-11-23 18:36:13,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-23 18:36:13,924 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:36:13,924 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:36:13,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-23 18:36:13,924 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:36:13,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:36:13,925 INFO L85 PathProgramCache]: Analyzing trace with hash -724330081, now seen corresponding path program 2 times [2024-11-23 18:36:13,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:36:13,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286016822] [2024-11-23 18:36:13,925 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 18:36:13,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:36:15,976 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 18:36:15,976 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 18:36:16,263 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-23 18:36:16,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:36:16,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286016822] [2024-11-23 18:36:16,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286016822] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:36:16,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:36:16,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:36:16,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536813637] [2024-11-23 18:36:16,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:36:16,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:36:16,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:36:16,266 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:36:16,267 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:36:16,267 INFO L87 Difference]: Start difference. First operand 28883 states and 37896 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 18:36:20,304 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-23 18:36:22,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:36:22,186 INFO L93 Difference]: Finished difference Result 68432 states and 89777 transitions. [2024-11-23 18:36:22,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:36:22,187 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 157 [2024-11-23 18:36:22,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:36:22,363 INFO L225 Difference]: With dead ends: 68432 [2024-11-23 18:36:22,363 INFO L226 Difference]: Without dead ends: 39567 [2024-11-23 18:36:22,440 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:36:22,441 INFO L435 NwaCegarLoop]: 1652 mSDtfsCounter, 1021 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1021 SdHoareTripleChecker+Valid, 2589 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-23 18:36:22,441 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1021 Valid, 2589 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2024-11-23 18:36:22,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39567 states. [2024-11-23 18:36:25,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39567 to 33917. [2024-11-23 18:36:25,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33917 states, 26200 states have (on average 1.2815648854961832) internal successors, (33577), 26578 states have internal predecessors, (33577), 5278 states have call successors, (5278), 2371 states have call predecessors, (5278), 2438 states have return successors, (5648), 5259 states have call predecessors, (5648), 5277 states have call successors, (5648) [2024-11-23 18:36:25,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33917 states to 33917 states and 44503 transitions. [2024-11-23 18:36:25,570 INFO L78 Accepts]: Start accepts. Automaton has 33917 states and 44503 transitions. Word has length 157 [2024-11-23 18:36:25,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:36:25,571 INFO L471 AbstractCegarLoop]: Abstraction has 33917 states and 44503 transitions. [2024-11-23 18:36:25,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-23 18:36:25,571 INFO L276 IsEmpty]: Start isEmpty. Operand 33917 states and 44503 transitions. [2024-11-23 18:36:25,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-23 18:36:25,593 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:36:25,593 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 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] [2024-11-23 18:36:25,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-23 18:36:25,594 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:36:25,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:36:25,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1252883586, now seen corresponding path program 1 times [2024-11-23 18:36:25,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:36:25,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589941971] [2024-11-23 18:36:25,595 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:36:25,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:36:27,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:36:33,037 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-23 18:36:33,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:36:33,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589941971] [2024-11-23 18:36:33,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589941971] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:36:33,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811736856] [2024-11-23 18:36:33,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:36:33,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:36:33,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef9f184a-0bf6-4dc8-9446-7ae9ee8bbf76/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:36:33,045 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef9f184a-0bf6-4dc8-9446-7ae9ee8bbf76/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:36:33,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef9f184a-0bf6-4dc8-9446-7ae9ee8bbf76/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 18:36:36,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:36:36,380 INFO L256 TraceCheckSpWp]: Trace formula consists of 2069 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-11-23 18:36:36,402 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:36:39,463 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-23 18:36:39,464 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:36:43,056 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-23 18:36:43,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811736856] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-23 18:36:43,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-23 18:36:43,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [16, 16] total 33 [2024-11-23 18:36:43,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664273975] [2024-11-23 18:36:43,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:36:43,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 18:36:43,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:36:43,059 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 18:36:43,059 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=933, Unknown=0, NotChecked=0, Total=1056 [2024-11-23 18:36:43,060 INFO L87 Difference]: Start difference. First operand 33917 states and 44503 transitions. Second operand has 11 states, 10 states have (on average 11.3) internal successors, (113), 9 states have internal predecessors, (113), 5 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-23 18:37:10,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:37:10,940 INFO L93 Difference]: Finished difference Result 79079 states and 103813 transitions. [2024-11-23 18:37:10,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 18:37:10,941 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 11.3) internal successors, (113), 9 states have internal predecessors, (113), 5 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 171 [2024-11-23 18:37:10,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:37:11,168 INFO L225 Difference]: With dead ends: 79079 [2024-11-23 18:37:11,168 INFO L226 Difference]: Without dead ends: 45468 [2024-11-23 18:37:11,279 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=138, Invalid=1052, Unknown=0, NotChecked=0, Total=1190 [2024-11-23 18:37:11,285 INFO L435 NwaCegarLoop]: 1183 mSDtfsCounter, 7089 mSDsluCounter, 2321 mSDsCounter, 0 mSdLazyCounter, 4497 mSolverCounterSat, 2336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7158 SdHoareTripleChecker+Valid, 3504 SdHoareTripleChecker+Invalid, 6833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2336 IncrementalHoareTripleChecker+Valid, 4497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.7s IncrementalHoareTripleChecker+Time [2024-11-23 18:37:11,285 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7158 Valid, 3504 Invalid, 6833 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2336 Valid, 4497 Invalid, 0 Unknown, 0 Unchecked, 23.7s Time] [2024-11-23 18:37:11,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45468 states. [2024-11-23 18:37:16,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45468 to 44931. [2024-11-23 18:37:16,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44931 states, 34705 states have (on average 1.2817461460884598) internal successors, (44483), 35212 states have internal predecessors, (44483), 6999 states have call successors, (6999), 3142 states have call predecessors, (6999), 3226 states have return successors, (7478), 6964 states have call predecessors, (7478), 6998 states have call successors, (7478) [2024-11-23 18:37:16,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44931 states to 44931 states and 58960 transitions. [2024-11-23 18:37:16,244 INFO L78 Accepts]: Start accepts. Automaton has 44931 states and 58960 transitions. Word has length 171 [2024-11-23 18:37:16,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:37:16,244 INFO L471 AbstractCegarLoop]: Abstraction has 44931 states and 58960 transitions. [2024-11-23 18:37:16,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 11.3) internal successors, (113), 9 states have internal predecessors, (113), 5 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-23 18:37:16,245 INFO L276 IsEmpty]: Start isEmpty. Operand 44931 states and 58960 transitions. [2024-11-23 18:37:16,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-23 18:37:16,269 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:37:16,269 INFO L218 NwaCegarLoop]: trace histogram [7, 5, 4, 4, 4, 3, 3, 3, 3, 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] [2024-11-23 18:37:16,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef9f184a-0bf6-4dc8-9446-7ae9ee8bbf76/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-23 18:37:16,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef9f184a-0bf6-4dc8-9446-7ae9ee8bbf76/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-23 18:37:16,470 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:37:16,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:37:16,470 INFO L85 PathProgramCache]: Analyzing trace with hash -418702881, now seen corresponding path program 1 times [2024-11-23 18:37:16,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:37:16,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220876052] [2024-11-23 18:37:16,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:37:16,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:37:18,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:37:18,556 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-23 18:37:18,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:37:18,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220876052] [2024-11-23 18:37:18,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220876052] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:37:18,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:37:18,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 18:37:18,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527435225] [2024-11-23 18:37:18,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:37:18,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:37:18,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:37:18,560 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:37:18,560 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:37:18,560 INFO L87 Difference]: Start difference. First operand 44931 states and 58960 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-23 18:37:22,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-23 18:37:28,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:37:28,686 INFO L93 Difference]: Finished difference Result 113190 states and 148458 transitions. [2024-11-23 18:37:28,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:37:28,687 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 178 [2024-11-23 18:37:28,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:37:28,899 INFO L225 Difference]: With dead ends: 113190 [2024-11-23 18:37:28,900 INFO L226 Difference]: Without dead ends: 68277 [2024-11-23 18:37:28,980 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:37:28,981 INFO L435 NwaCegarLoop]: 2100 mSDtfsCounter, 1043 mSDsluCounter, 3146 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1043 SdHoareTripleChecker+Valid, 5246 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:37:28,981 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1043 Valid, 5246 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2024-11-23 18:37:29,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68277 states. [2024-11-23 18:37:34,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68277 to 45025. [2024-11-23 18:37:34,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45025 states, 34799 states have (on average 1.280985085778327) internal successors, (44577), 35306 states have internal predecessors, (44577), 6999 states have call successors, (6999), 3142 states have call predecessors, (6999), 3226 states have return successors, (7478), 6964 states have call predecessors, (7478), 6998 states have call successors, (7478) [2024-11-23 18:37:34,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45025 states to 45025 states and 59054 transitions. [2024-11-23 18:37:34,952 INFO L78 Accepts]: Start accepts. Automaton has 45025 states and 59054 transitions. Word has length 178 [2024-11-23 18:37:34,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:37:34,953 INFO L471 AbstractCegarLoop]: Abstraction has 45025 states and 59054 transitions. [2024-11-23 18:37:34,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-23 18:37:34,953 INFO L276 IsEmpty]: Start isEmpty. Operand 45025 states and 59054 transitions. [2024-11-23 18:37:34,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-11-23 18:37:34,980 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:37:34,980 INFO L218 NwaCegarLoop]: trace histogram [7, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2024-11-23 18:37:34,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-23 18:37:34,981 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:37:34,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:37:34,981 INFO L85 PathProgramCache]: Analyzing trace with hash -458803035, now seen corresponding path program 1 times [2024-11-23 18:37:34,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:37:34,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264257141] [2024-11-23 18:37:34,982 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:37:34,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:37:38,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:37:38,439 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-23 18:37:38,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:37:38,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264257141] [2024-11-23 18:37:38,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264257141] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:37:38,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:37:38,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 18:37:38,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346615841] [2024-11-23 18:37:38,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:37:38,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:37:38,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:37:38,441 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:37:38,441 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:37:38,441 INFO L87 Difference]: Start difference. First operand 45025 states and 59054 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-23 18:37:42,477 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-23 18:37:48,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:37:48,717 INFO L93 Difference]: Finished difference Result 113425 states and 148693 transitions. [2024-11-23 18:37:48,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:37:48,718 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 186 [2024-11-23 18:37:48,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:37:48,944 INFO L225 Difference]: With dead ends: 113425 [2024-11-23 18:37:48,945 INFO L226 Difference]: Without dead ends: 68418 [2024-11-23 18:37:49,042 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:37:49,043 INFO L435 NwaCegarLoop]: 2100 mSDtfsCounter, 1043 mSDsluCounter, 3146 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1043 SdHoareTripleChecker+Valid, 5246 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-23 18:37:49,044 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1043 Valid, 5246 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2024-11-23 18:37:49,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68418 states. [2024-11-23 18:37:54,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68418 to 45025. [2024-11-23 18:37:54,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45025 states, 34799 states have (on average 1.280985085778327) internal successors, (44577), 35306 states have internal predecessors, (44577), 6999 states have call successors, (6999), 3142 states have call predecessors, (6999), 3226 states have return successors, (7478), 6964 states have call predecessors, (7478), 6998 states have call successors, (7478) [2024-11-23 18:37:54,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45025 states to 45025 states and 59054 transitions. [2024-11-23 18:37:55,050 INFO L78 Accepts]: Start accepts. Automaton has 45025 states and 59054 transitions. Word has length 186 [2024-11-23 18:37:55,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:37:55,051 INFO L471 AbstractCegarLoop]: Abstraction has 45025 states and 59054 transitions. [2024-11-23 18:37:55,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-23 18:37:55,051 INFO L276 IsEmpty]: Start isEmpty. Operand 45025 states and 59054 transitions. [2024-11-23 18:37:55,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-11-23 18:37:55,089 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:37:55,089 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:37:55,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-23 18:37:55,090 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:37:55,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:37:55,094 INFO L85 PathProgramCache]: Analyzing trace with hash 597489368, now seen corresponding path program 1 times [2024-11-23 18:37:55,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:37:55,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109755922] [2024-11-23 18:37:55,094 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:37:55,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:37:57,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:37:57,987 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-23 18:37:57,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:37:57,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109755922] [2024-11-23 18:37:57,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109755922] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:37:57,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:37:57,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 18:37:57,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244076128] [2024-11-23 18:37:57,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:37:57,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 18:37:57,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:37:57,989 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 18:37:57,989 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:37:57,989 INFO L87 Difference]: Start difference. First operand 45025 states and 59054 transitions. Second operand has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 6 states have internal predecessors, (136), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-23 18:38:04,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:38:04,361 INFO L93 Difference]: Finished difference Result 90381 states and 118679 transitions. [2024-11-23 18:38:04,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 18:38:04,362 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 6 states have internal predecessors, (136), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 204 [2024-11-23 18:38:04,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:38:04,535 INFO L225 Difference]: With dead ends: 90381 [2024-11-23 18:38:04,536 INFO L226 Difference]: Without dead ends: 45669 [2024-11-23 18:38:04,608 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:38:04,609 INFO L435 NwaCegarLoop]: 1065 mSDtfsCounter, 12 mSDsluCounter, 5291 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 6356 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 18:38:04,609 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 6356 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 18:38:04,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45669 states. [2024-11-23 18:38:09,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45669 to 45265. [2024-11-23 18:38:09,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45265 states, 34999 states have (on average 1.2793794108403098) internal successors, (44777), 35506 states have internal predecessors, (44777), 6999 states have call successors, (6999), 3142 states have call predecessors, (6999), 3266 states have return successors, (7558), 7004 states have call predecessors, (7558), 6998 states have call successors, (7558) [2024-11-23 18:38:09,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45265 states to 45265 states and 59334 transitions. [2024-11-23 18:38:10,018 INFO L78 Accepts]: Start accepts. Automaton has 45265 states and 59334 transitions. Word has length 204 [2024-11-23 18:38:10,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:38:10,019 INFO L471 AbstractCegarLoop]: Abstraction has 45265 states and 59334 transitions. [2024-11-23 18:38:10,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 6 states have internal predecessors, (136), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-23 18:38:10,019 INFO L276 IsEmpty]: Start isEmpty. Operand 45265 states and 59334 transitions. [2024-11-23 18:38:10,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-11-23 18:38:10,041 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:38:10,041 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:38:10,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-23 18:38:10,042 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:38:10,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:38:10,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1629407924, now seen corresponding path program 1 times [2024-11-23 18:38:10,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:38:10,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318167679] [2024-11-23 18:38:10,043 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:38:10,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:38:11,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:38:12,214 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-23 18:38:12,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:38:12,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318167679] [2024-11-23 18:38:12,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318167679] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:38:12,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487082053] [2024-11-23 18:38:12,215 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:38:12,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:38:12,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef9f184a-0bf6-4dc8-9446-7ae9ee8bbf76/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:38:12,217 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef9f184a-0bf6-4dc8-9446-7ae9ee8bbf76/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:38:12,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef9f184a-0bf6-4dc8-9446-7ae9ee8bbf76/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 18:38:15,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:38:15,911 INFO L256 TraceCheckSpWp]: Trace formula consists of 2302 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-23 18:38:15,928 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:38:15,996 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-23 18:38:15,998 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:38:15,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487082053] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:38:15,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:38:15,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-23 18:38:15,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215001839] [2024-11-23 18:38:15,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:38:16,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:38:16,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:38:16,001 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:38:16,001 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:38:16,001 INFO L87 Difference]: Start difference. First operand 45265 states and 59334 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-23 18:38:20,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:38:20,716 INFO L93 Difference]: Finished difference Result 90297 states and 118447 transitions. [2024-11-23 18:38:20,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:38:20,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 205 [2024-11-23 18:38:20,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:38:21,160 INFO L225 Difference]: With dead ends: 90297 [2024-11-23 18:38:21,161 INFO L226 Difference]: Without dead ends: 45345 [2024-11-23 18:38:21,260 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:38:21,272 INFO L435 NwaCegarLoop]: 1058 mSDtfsCounter, 1 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2109 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:38:21,272 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2109 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:38:21,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45345 states. [2024-11-23 18:38:26,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45345 to 45345. [2024-11-23 18:38:26,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45345 states, 35079 states have (on average 1.278742267453462) internal successors, (44857), 35586 states have internal predecessors, (44857), 6999 states have call successors, (6999), 3142 states have call predecessors, (6999), 3266 states have return successors, (7558), 7004 states have call predecessors, (7558), 6998 states have call successors, (7558) [2024-11-23 18:38:26,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45345 states to 45345 states and 59414 transitions. [2024-11-23 18:38:26,733 INFO L78 Accepts]: Start accepts. Automaton has 45345 states and 59414 transitions. Word has length 205 [2024-11-23 18:38:26,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:38:26,734 INFO L471 AbstractCegarLoop]: Abstraction has 45345 states and 59414 transitions. [2024-11-23 18:38:26,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-23 18:38:26,735 INFO L276 IsEmpty]: Start isEmpty. Operand 45345 states and 59414 transitions. [2024-11-23 18:38:26,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2024-11-23 18:38:26,750 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:38:26,750 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:38:26,766 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef9f184a-0bf6-4dc8-9446-7ae9ee8bbf76/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-23 18:38:26,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef9f184a-0bf6-4dc8-9446-7ae9ee8bbf76/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:38:26,951 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:38:26,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:38:26,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1879877932, now seen corresponding path program 1 times [2024-11-23 18:38:26,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:38:26,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357457991] [2024-11-23 18:38:26,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:38:26,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:38:28,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:38:29,905 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-23 18:38:29,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:38:29,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357457991] [2024-11-23 18:38:29,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357457991] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:38:29,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:38:29,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 18:38:29,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422027612] [2024-11-23 18:38:29,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:38:29,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 18:38:29,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:38:29,908 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 18:38:29,908 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:38:29,908 INFO L87 Difference]: Start difference. First operand 45345 states and 59414 transitions. Second operand has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 5 states have internal predecessors, (142), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 4 states have call predecessors, (23), 2 states have call successors, (23) [2024-11-23 18:38:34,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:38:34,373 INFO L93 Difference]: Finished difference Result 90691 states and 118831 transitions. [2024-11-23 18:38:34,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 18:38:34,374 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 5 states have internal predecessors, (142), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 4 states have call predecessors, (23), 2 states have call successors, (23) Word has length 213 [2024-11-23 18:38:34,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:38:34,580 INFO L225 Difference]: With dead ends: 90691 [2024-11-23 18:38:34,580 INFO L226 Difference]: Without dead ends: 45659 [2024-11-23 18:38:34,677 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:38:34,678 INFO L435 NwaCegarLoop]: 1058 mSDtfsCounter, 0 mSDsluCounter, 5283 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6341 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:38:34,679 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6341 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:38:34,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45659 states. [2024-11-23 18:38:39,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45659 to 45545. [2024-11-23 18:38:39,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45545 states, 35239 states have (on average 1.27747665938307) internal successors, (45017), 35706 states have internal predecessors, (45017), 6999 states have call successors, (6999), 3142 states have call predecessors, (6999), 3306 states have return successors, (7598), 7084 states have call predecessors, (7598), 6998 states have call successors, (7598) [2024-11-23 18:38:39,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45545 states to 45545 states and 59614 transitions. [2024-11-23 18:38:39,407 INFO L78 Accepts]: Start accepts. Automaton has 45545 states and 59614 transitions. Word has length 213 [2024-11-23 18:38:39,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:38:39,408 INFO L471 AbstractCegarLoop]: Abstraction has 45545 states and 59614 transitions. [2024-11-23 18:38:39,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 5 states have internal predecessors, (142), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 4 states have call predecessors, (23), 2 states have call successors, (23) [2024-11-23 18:38:39,408 INFO L276 IsEmpty]: Start isEmpty. Operand 45545 states and 59614 transitions. [2024-11-23 18:38:39,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-11-23 18:38:39,423 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:38:39,424 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:38:39,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-23 18:38:39,424 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:38:39,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:38:39,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1050260300, now seen corresponding path program 1 times [2024-11-23 18:38:39,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:38:39,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981117175] [2024-11-23 18:38:39,425 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:38:39,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:38:42,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:38:44,081 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-23 18:38:44,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:38:44,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981117175] [2024-11-23 18:38:44,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981117175] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:38:44,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:38:44,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 18:38:44,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981880984] [2024-11-23 18:38:44,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:38:44,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 18:38:44,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:38:44,085 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 18:38:44,085 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:38:44,086 INFO L87 Difference]: Start difference. First operand 45545 states and 59614 transitions. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 6 states have internal predecessors, (140), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2024-11-23 18:38:49,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:38:49,142 INFO L93 Difference]: Finished difference Result 91594 states and 120059 transitions. [2024-11-23 18:38:49,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 18:38:49,143 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 6 states have internal predecessors, (140), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) Word has length 219 [2024-11-23 18:38:49,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:38:49,468 INFO L225 Difference]: With dead ends: 91594 [2024-11-23 18:38:49,468 INFO L226 Difference]: Without dead ends: 46362 [2024-11-23 18:38:49,537 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-23 18:38:49,537 INFO L435 NwaCegarLoop]: 1045 mSDtfsCounter, 15 mSDsluCounter, 5206 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 6251 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-23 18:38:49,538 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 6251 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-23 18:38:49,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46362 states. [2024-11-23 18:38:54,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46362 to 45745. [2024-11-23 18:38:54,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45745 states, 35399 states have (on average 1.2762224921607954) internal successors, (45177), 35866 states have internal predecessors, (45177), 6999 states have call successors, (6999), 3142 states have call predecessors, (6999), 3346 states have return successors, (7758), 7124 states have call predecessors, (7758), 6998 states have call successors, (7758) [2024-11-23 18:38:54,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45745 states to 45745 states and 59934 transitions. [2024-11-23 18:38:54,842 INFO L78 Accepts]: Start accepts. Automaton has 45745 states and 59934 transitions. Word has length 219 [2024-11-23 18:38:54,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:38:54,842 INFO L471 AbstractCegarLoop]: Abstraction has 45745 states and 59934 transitions. [2024-11-23 18:38:54,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 6 states have internal predecessors, (140), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2024-11-23 18:38:54,843 INFO L276 IsEmpty]: Start isEmpty. Operand 45745 states and 59934 transitions. [2024-11-23 18:38:55,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-11-23 18:38:55,037 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:38:55,038 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:38:55,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-23 18:38:55,038 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:38:55,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:38:55,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1727896145, now seen corresponding path program 1 times [2024-11-23 18:38:55,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:38:55,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653513858] [2024-11-23 18:38:55,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:38:55,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:38:56,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:39:01,330 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 30 proven. 4 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-23 18:39:01,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:39:01,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653513858] [2024-11-23 18:39:01,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653513858] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:39:01,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313587060] [2024-11-23 18:39:01,331 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:39:01,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:39:01,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef9f184a-0bf6-4dc8-9446-7ae9ee8bbf76/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:39:01,334 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef9f184a-0bf6-4dc8-9446-7ae9ee8bbf76/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:39:01,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef9f184a-0bf6-4dc8-9446-7ae9ee8bbf76/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 18:39:04,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:39:04,625 INFO L256 TraceCheckSpWp]: Trace formula consists of 2372 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-11-23 18:39:04,635 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:39:08,393 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 39 proven. 4 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-23 18:39:08,393 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:39:12,713 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-23 18:39:12,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313587060] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-23 18:39:12,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-23 18:39:12,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [16, 16] total 33 [2024-11-23 18:39:12,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48934792] [2024-11-23 18:39:12,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:39:12,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 18:39:12,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:39:12,715 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 18:39:12,715 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=933, Unknown=0, NotChecked=0, Total=1056 [2024-11-23 18:39:12,715 INFO L87 Difference]: Start difference. First operand 45745 states and 59934 transitions. Second operand has 11 states, 10 states have (on average 14.2) internal successors, (142), 9 states have internal predecessors, (142), 5 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2024-11-23 18:39:44,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:39:44,401 INFO L93 Difference]: Finished difference Result 113983 states and 149406 transitions. [2024-11-23 18:39:44,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 18:39:44,402 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 14.2) internal successors, (142), 9 states have internal predecessors, (142), 5 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 221 [2024-11-23 18:39:44,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:39:44,614 INFO L225 Difference]: With dead ends: 113983 [2024-11-23 18:39:44,615 INFO L226 Difference]: Without dead ends: 68546 [2024-11-23 18:39:44,686 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=138, Invalid=1052, Unknown=0, NotChecked=0, Total=1190 [2024-11-23 18:39:44,687 INFO L435 NwaCegarLoop]: 1075 mSDtfsCounter, 5595 mSDsluCounter, 2328 mSDsCounter, 0 mSdLazyCounter, 5166 mSolverCounterSat, 1787 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5659 SdHoareTripleChecker+Valid, 3403 SdHoareTripleChecker+Invalid, 6953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1787 IncrementalHoareTripleChecker+Valid, 5166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.2s IncrementalHoareTripleChecker+Time [2024-11-23 18:39:44,687 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5659 Valid, 3403 Invalid, 6953 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1787 Valid, 5166 Invalid, 0 Unknown, 0 Unchecked, 25.2s Time] [2024-11-23 18:39:44,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68546 states. [2024-11-23 18:39:49,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68546 to 45675. [2024-11-23 18:39:49,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45675 states, 35349 states have (on average 1.2760474129395456) internal successors, (45107), 35826 states have internal predecessors, (45107), 6979 states have call successors, (6979), 3142 states have call predecessors, (6979), 3346 states have return successors, (7738), 7094 states have call predecessors, (7738), 6978 states have call successors, (7738) [2024-11-23 18:39:50,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45675 states to 45675 states and 59824 transitions. [2024-11-23 18:39:50,132 INFO L78 Accepts]: Start accepts. Automaton has 45675 states and 59824 transitions. Word has length 221 [2024-11-23 18:39:50,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:39:50,133 INFO L471 AbstractCegarLoop]: Abstraction has 45675 states and 59824 transitions. [2024-11-23 18:39:50,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 14.2) internal successors, (142), 9 states have internal predecessors, (142), 5 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2024-11-23 18:39:50,133 INFO L276 IsEmpty]: Start isEmpty. Operand 45675 states and 59824 transitions. [2024-11-23 18:39:50,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-11-23 18:39:50,153 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:39:50,153 INFO L218 NwaCegarLoop]: trace histogram [7, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:39:50,167 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef9f184a-0bf6-4dc8-9446-7ae9ee8bbf76/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-23 18:39:50,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef9f184a-0bf6-4dc8-9446-7ae9ee8bbf76/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:39:50,354 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:39:50,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:39:50,354 INFO L85 PathProgramCache]: Analyzing trace with hash -54317573, now seen corresponding path program 1 times [2024-11-23 18:39:50,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:39:50,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732179704] [2024-11-23 18:39:50,354 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:39:50,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:39:51,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:39:51,750 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-23 18:39:51,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:39:51,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732179704] [2024-11-23 18:39:51,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732179704] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:39:51,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:39:51,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:39:51,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474300448] [2024-11-23 18:39:51,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:39:51,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:39:51,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:39:51,752 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:39:51,752 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:39:51,752 INFO L87 Difference]: Start difference. First operand 45675 states and 59824 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-23 18:39:56,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:39:56,615 INFO L93 Difference]: Finished difference Result 91426 states and 119769 transitions. [2024-11-23 18:39:56,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:39:56,615 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 231 [2024-11-23 18:39:56,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:39:56,833 INFO L225 Difference]: With dead ends: 91426 [2024-11-23 18:39:56,833 INFO L226 Difference]: Without dead ends: 45769 [2024-11-23 18:39:56,932 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:39:56,932 INFO L435 NwaCegarLoop]: 1058 mSDtfsCounter, 1 mSDsluCounter, 1054 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2112 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 18:39:56,933 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2112 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:39:56,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45769 states.