./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 d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af023f07-864a-4a2d-a628-f4d33350cfae/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af023f07-864a-4a2d-a628-f4d33350cfae/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af023f07-864a-4a2d-a628-f4d33350cfae/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af023f07-864a-4a2d-a628-f4d33350cfae/bin/uautomizer-verify-84ZbGMXZE1/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_af023f07-864a-4a2d-a628-f4d33350cfae/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af023f07-864a-4a2d-a628-f4d33350cfae/bin/uautomizer-verify-84ZbGMXZE1 --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-d790fec [2024-12-02 15:21:02,645 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 15:21:02,709 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af023f07-864a-4a2d-a628-f4d33350cfae/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-12-02 15:21:02,714 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 15:21:02,714 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 15:21:02,736 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 15:21:02,737 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 15:21:02,737 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 15:21:02,737 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 15:21:02,737 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 15:21:02,737 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 15:21:02,738 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 15:21:02,738 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 15:21:02,738 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 15:21:02,738 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 15:21:02,738 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 15:21:02,738 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 15:21:02,738 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 15:21:02,739 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 15:21:02,739 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 15:21:02,739 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 15:21:02,739 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 15:21:02,739 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 15:21:02,739 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 15:21:02,739 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 15:21:02,739 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 15:21:02,739 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 15:21:02,739 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 15:21:02,739 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 15:21:02,740 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:21:02,740 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 15:21:02,740 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 15:21:02,740 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 15:21:02,740 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 15:21:02,740 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:21:02,740 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 15:21:02,740 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 15:21:02,740 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 15:21:02,740 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 15:21:02,740 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 15:21:02,741 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 15:21:02,741 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 15:21:02,741 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 15:21:02,741 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 15:21:02,741 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 15:21:02,741 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_af023f07-864a-4a2d-a628-f4d33350cfae/bin/uautomizer-verify-84ZbGMXZE1 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 [2024-12-02 15:21:03,004 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 15:21:03,014 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 15:21:03,016 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 15:21:03,017 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 15:21:03,017 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 15:21:03,018 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af023f07-864a-4a2d-a628-f4d33350cfae/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--usb_8dev.ko-entry_point.cil.out.i [2024-12-02 15:21:05,636 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af023f07-864a-4a2d-a628-f4d33350cfae/bin/uautomizer-verify-84ZbGMXZE1/data/c1fa05281/a5c7a41142094bac89733ffa68d373b0/FLAGbabe30b0d [2024-12-02 15:21:06,047 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 15:21:06,048 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af023f07-864a-4a2d-a628-f4d33350cfae/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--usb_8dev.ko-entry_point.cil.out.i [2024-12-02 15:21:06,078 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af023f07-864a-4a2d-a628-f4d33350cfae/bin/uautomizer-verify-84ZbGMXZE1/data/c1fa05281/a5c7a41142094bac89733ffa68d373b0/FLAGbabe30b0d [2024-12-02 15:21:06,216 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af023f07-864a-4a2d-a628-f4d33350cfae/bin/uautomizer-verify-84ZbGMXZE1/data/c1fa05281/a5c7a41142094bac89733ffa68d373b0 [2024-12-02 15:21:06,218 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 15:21:06,219 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 15:21:06,220 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 15:21:06,221 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 15:21:06,224 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 15:21:06,225 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:21:06" (1/1) ... [2024-12-02 15:21:06,226 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f219384 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:21:06, skipping insertion in model container [2024-12-02 15:21:06,226 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:21:06" (1/1) ... [2024-12-02 15:21:06,292 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 15:21:06,900 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_af023f07-864a-4a2d-a628-f4d33350cfae/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] [2024-12-02 15:21:07,258 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 15:21:07,283 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 15:21:07,394 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("bswapl %0": "=r" (val): "0" (val)); [5402] [2024-12-02 15:21:07,397 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] [2024-12-02 15:21:07,398 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] [2024-12-02 15:21:07,398 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] [2024-12-02 15:21:07,399 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] [2024-12-02 15:21:07,400 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] [2024-12-02 15:21:07,408 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_af023f07-864a-4a2d-a628-f4d33350cfae/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] [2024-12-02 15:21:07,448 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] [2024-12-02 15:21:07,523 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 15:21:07,577 INFO L204 MainTranslator]: Completed translation [2024-12-02 15:21:07,578 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:21:07 WrapperNode [2024-12-02 15:21:07,578 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 15:21:07,579 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 15:21:07,579 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 15:21:07,579 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 15:21:07,584 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:21:07" (1/1) ... [2024-12-02 15:21:07,617 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:21:07" (1/1) ... [2024-12-02 15:21:07,703 INFO L138 Inliner]: procedures = 174, calls = 830, calls flagged for inlining = 87, calls inlined = 87, statements flattened = 2590 [2024-12-02 15:21:07,704 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 15:21:07,704 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 15:21:07,704 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 15:21:07,704 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 15:21:07,714 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:21:07" (1/1) ... [2024-12-02 15:21:07,714 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:21:07" (1/1) ... [2024-12-02 15:21:07,728 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:21:07" (1/1) ... [2024-12-02 15:21:07,957 INFO L175 MemorySlicer]: Split 464 memory accesses to 8 slices as follows [2, 5, 341, 31, 1, 44, 9, 31]. 73 percent of accesses are in the largest equivalence class. The 28 initializations are split as follows [2, 0, 26, 0, 0, 0, 0, 0]. The 249 writes are split as follows [0, 1, 186, 18, 0, 44, 0, 0]. [2024-12-02 15:21:07,957 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:21:07" (1/1) ... [2024-12-02 15:21:07,957 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:21:07" (1/1) ... [2024-12-02 15:21:08,022 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:21:07" (1/1) ... [2024-12-02 15:21:08,026 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:21:07" (1/1) ... [2024-12-02 15:21:08,037 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:21:07" (1/1) ... [2024-12-02 15:21:08,052 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:21:07" (1/1) ... [2024-12-02 15:21:08,061 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:21:07" (1/1) ... [2024-12-02 15:21:08,080 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 15:21:08,081 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 15:21:08,081 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 15:21:08,082 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 15:21:08,083 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:21:07" (1/1) ... [2024-12-02 15:21:08,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:21:08,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af023f07-864a-4a2d-a628-f4d33350cfae/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:21:08,113 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af023f07-864a-4a2d-a628-f4d33350cfae/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 15:21:08,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af023f07-864a-4a2d-a628-f4d33350cfae/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 15:21:08,140 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2024-12-02 15:21:08,140 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2024-12-02 15:21:08,140 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2024-12-02 15:21:08,140 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2024-12-02 15:21:08,140 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_2 [2024-12-02 15:21:08,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_2 [2024-12-02 15:21:08,140 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_15 [2024-12-02 15:21:08,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_15 [2024-12-02 15:21:08,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-12-02 15:21:08,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-12-02 15:21:08,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-12-02 15:21:08,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-12-02 15:21:08,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-12-02 15:21:08,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-12-02 15:21:08,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2024-12-02 15:21:08,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2024-12-02 15:21:08,141 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_3 [2024-12-02 15:21:08,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_3 [2024-12-02 15:21:08,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#0 [2024-12-02 15:21:08,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#1 [2024-12-02 15:21:08,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#2 [2024-12-02 15:21:08,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#3 [2024-12-02 15:21:08,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#4 [2024-12-02 15:21:08,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#5 [2024-12-02 15:21:08,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#6 [2024-12-02 15:21:08,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#7 [2024-12-02 15:21:08,142 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2024-12-02 15:21:08,142 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2024-12-02 15:21:08,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-12-02 15:21:08,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-12-02 15:21:08,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-12-02 15:21:08,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-12-02 15:21:08,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-12-02 15:21:08,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-12-02 15:21:08,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2024-12-02 15:21:08,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2024-12-02 15:21:08,143 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2024-12-02 15:21:08,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2024-12-02 15:21:08,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 15:21:08,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 15:21:08,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-12-02 15:21:08,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-12-02 15:21:08,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-12-02 15:21:08,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-12-02 15:21:08,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-12-02 15:21:08,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-12-02 15:21:08,144 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2024-12-02 15:21:08,144 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2024-12-02 15:21:08,144 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2024-12-02 15:21:08,144 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2024-12-02 15:21:08,144 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2024-12-02 15:21:08,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2024-12-02 15:21:08,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#0 [2024-12-02 15:21:08,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#1 [2024-12-02 15:21:08,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#2 [2024-12-02 15:21:08,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#3 [2024-12-02 15:21:08,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#4 [2024-12-02 15:21:08,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#5 [2024-12-02 15:21:08,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#6 [2024-12-02 15:21:08,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#7 [2024-12-02 15:21:08,145 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#0 [2024-12-02 15:21:08,145 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#1 [2024-12-02 15:21:08,145 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#2 [2024-12-02 15:21:08,145 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#3 [2024-12-02 15:21:08,145 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#4 [2024-12-02 15:21:08,145 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#5 [2024-12-02 15:21:08,145 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#6 [2024-12-02 15:21:08,145 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#7 [2024-12-02 15:21:08,145 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2024-12-02 15:21:08,145 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2024-12-02 15:21:08,145 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2024-12-02 15:21:08,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2024-12-02 15:21:08,145 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2024-12-02 15:21:08,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2024-12-02 15:21:08,145 INFO L130 BoogieDeclarations]: Found specification of procedure usb_8dev_read_bulk_callback [2024-12-02 15:21:08,145 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_8dev_read_bulk_callback [2024-12-02 15:21:08,145 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_anchored_urbs [2024-12-02 15:21:08,145 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_anchored_urbs [2024-12-02 15:21:08,146 INFO L130 BoogieDeclarations]: Found specification of procedure init_usb_anchor [2024-12-02 15:21:08,146 INFO L138 BoogieDeclarations]: Found implementation of procedure init_usb_anchor [2024-12-02 15:21:08,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 15:21:08,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 15:21:08,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-12-02 15:21:08,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-12-02 15:21:08,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-12-02 15:21:08,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-12-02 15:21:08,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-12-02 15:21:08,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-12-02 15:21:08,146 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2024-12-02 15:21:08,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2024-12-02 15:21:08,146 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2024-12-02 15:21:08,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2024-12-02 15:21:08,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-12-02 15:21:08,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-12-02 15:21:08,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-12-02 15:21:08,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#3 [2024-12-02 15:21:08,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#4 [2024-12-02 15:21:08,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#5 [2024-12-02 15:21:08,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#6 [2024-12-02 15:21:08,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#7 [2024-12-02 15:21:08,148 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-12-02 15:21:08,148 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-12-02 15:21:08,148 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-12-02 15:21:08,148 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#3 [2024-12-02 15:21:08,148 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#4 [2024-12-02 15:21:08,148 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#5 [2024-12-02 15:21:08,148 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#6 [2024-12-02 15:21:08,148 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#7 [2024-12-02 15:21:08,148 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 15:21:08,148 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 15:21:08,148 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2024-12-02 15:21:08,148 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2024-12-02 15:21:08,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 15:21:08,148 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2024-12-02 15:21:08,148 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2024-12-02 15:21:08,148 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2024-12-02 15:21:08,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2024-12-02 15:21:08,148 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_all_urbs [2024-12-02 15:21:08,148 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_all_urbs [2024-12-02 15:21:08,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 15:21:08,149 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2024-12-02 15:21:08,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2024-12-02 15:21:08,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-02 15:21:08,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-12-02 15:21:08,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-12-02 15:21:08,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-12-02 15:21:08,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-12-02 15:21:08,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-12-02 15:21:08,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-12-02 15:21:08,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-12-02 15:21:08,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-12-02 15:21:08,149 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2024-12-02 15:21:08,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2024-12-02 15:21:08,149 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2024-12-02 15:21:08,149 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2024-12-02 15:21:08,149 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2024-12-02 15:21:08,149 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2024-12-02 15:21:08,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-12-02 15:21:08,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-12-02 15:21:08,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-12-02 15:21:08,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-12-02 15:21:08,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-12-02 15:21:08,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-12-02 15:21:08,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-12-02 15:21:08,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-12-02 15:21:08,150 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2024-12-02 15:21:08,150 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2024-12-02 15:21:08,150 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2024-12-02 15:21:08,150 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2024-12-02 15:21:08,150 INFO L130 BoogieDeclarations]: Found specification of procedure usb_anchor_urb [2024-12-02 15:21:08,150 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_anchor_urb [2024-12-02 15:21:08,150 INFO L130 BoogieDeclarations]: Found specification of procedure can_led_event [2024-12-02 15:21:08,150 INFO L138 BoogieDeclarations]: Found implementation of procedure can_led_event [2024-12-02 15:21:08,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 15:21:08,150 INFO L130 BoogieDeclarations]: Found specification of procedure usb_8dev_disconnect [2024-12-02 15:21:08,150 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_8dev_disconnect [2024-12-02 15:21:08,150 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_warn [2024-12-02 15:21:08,151 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_warn [2024-12-02 15:21:08,151 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2024-12-02 15:21:08,152 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2024-12-02 15:21:08,152 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2024-12-02 15:21:08,152 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2024-12-02 15:21:08,152 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unanchor_urb [2024-12-02 15:21:08,152 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unanchor_urb [2024-12-02 15:21:08,152 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2024-12-02 15:21:08,152 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2024-12-02 15:21:08,152 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_info [2024-12-02 15:21:08,152 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_info [2024-12-02 15:21:08,152 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2024-12-02 15:21:08,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2024-12-02 15:21:08,152 INFO L130 BoogieDeclarations]: Found specification of procedure close_candev [2024-12-02 15:21:08,152 INFO L138 BoogieDeclarations]: Found implementation of procedure close_candev [2024-12-02 15:21:08,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 15:21:08,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 15:21:08,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 15:21:08,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 15:21:08,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-02 15:21:08,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-12-02 15:21:08,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-12-02 15:21:08,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-12-02 15:21:08,152 INFO L130 BoogieDeclarations]: Found specification of procedure free_candev [2024-12-02 15:21:08,153 INFO L138 BoogieDeclarations]: Found implementation of procedure free_candev [2024-12-02 15:21:08,153 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2024-12-02 15:21:08,153 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2024-12-02 15:21:08,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#0 [2024-12-02 15:21:08,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#1 [2024-12-02 15:21:08,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#2 [2024-12-02 15:21:08,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#3 [2024-12-02 15:21:08,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#4 [2024-12-02 15:21:08,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#5 [2024-12-02 15:21:08,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#6 [2024-12-02 15:21:08,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#7 [2024-12-02 15:21:08,153 INFO L130 BoogieDeclarations]: Found specification of procedure usb_8dev_send_cmd [2024-12-02 15:21:08,153 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_8dev_send_cmd [2024-12-02 15:21:08,153 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2024-12-02 15:21:08,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2024-12-02 15:21:08,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 15:21:08,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 15:21:08,153 INFO L130 BoogieDeclarations]: Found specification of procedure usb_8dev_cmd_open [2024-12-02 15:21:08,153 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_8dev_cmd_open [2024-12-02 15:21:08,675 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 15:21:08,677 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 15:21:08,770 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2024-12-02 15:21:09,705 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2024-12-02 15:21:18,149 INFO L? ?]: Removed 1198 outVars from TransFormulas that were not future-live. [2024-12-02 15:21:18,149 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 15:21:18,173 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 15:21:18,173 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-12-02 15:21:18,174 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:21:18 BoogieIcfgContainer [2024-12-02 15:21:18,174 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 15:21:18,176 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 15:21:18,176 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 15:21:18,180 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 15:21:18,180 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:21:06" (1/3) ... [2024-12-02 15:21:18,181 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7acf58f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:21:18, skipping insertion in model container [2024-12-02 15:21:18,181 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:21:07" (2/3) ... [2024-12-02 15:21:18,181 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7acf58f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:21:18, skipping insertion in model container [2024-12-02 15:21:18,181 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:21:18" (3/3) ... [2024-12-02 15:21:18,182 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 [2024-12-02 15:21:18,192 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 15:21:18,194 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. [2024-12-02 15:21:18,256 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 15:21:18,267 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;@2405b5eb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 15:21:18,267 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 15:21:18,273 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) [2024-12-02 15:21:18,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-12-02 15:21:18,281 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:21:18,281 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] [2024-12-02 15:21:18,282 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:21:18,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:21:18,286 INFO L85 PathProgramCache]: Analyzing trace with hash 692818575, now seen corresponding path program 1 times [2024-12-02 15:21:18,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:21:18,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003643793] [2024-12-02 15:21:18,294 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:21:18,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:21:19,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:21:20,317 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 15:21:20,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:21:20,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003643793] [2024-12-02 15:21:20,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003643793] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:21:20,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:21:20,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:21:20,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208800809] [2024-12-02 15:21:20,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:21:20,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:21:20,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:21:20,342 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:21:20,343 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:21:20,346 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) [2024-12-02 15:21:24,393 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 [] [2024-12-02 15:21:24,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:21:24,662 INFO L93 Difference]: Finished difference Result 2389 states and 3367 transitions. [2024-12-02 15:21:24,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:21:24,664 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 [2024-12-02 15:21:24,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:21:24,683 INFO L225 Difference]: With dead ends: 2389 [2024-12-02 15:21:24,683 INFO L226 Difference]: Without dead ends: 1559 [2024-12-02 15:21:24,690 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 [2024-12-02 15:21:24,692 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, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:21:24,692 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1048 Valid, 2177 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2024-12-02 15:21:24,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1559 states. [2024-12-02 15:21:24,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1559 to 1559. [2024-12-02 15:21:24,815 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) [2024-12-02 15:21:24,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1559 states to 1559 states and 2104 transitions. [2024-12-02 15:21:24,831 INFO L78 Accepts]: Start accepts. Automaton has 1559 states and 2104 transitions. Word has length 28 [2024-12-02 15:21:24,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:21:24,831 INFO L471 AbstractCegarLoop]: Abstraction has 1559 states and 2104 transitions. [2024-12-02 15:21:24,831 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) [2024-12-02 15:21:24,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1559 states and 2104 transitions. [2024-12-02 15:21:24,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-12-02 15:21:24,835 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:21:24,835 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] [2024-12-02 15:21:24,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 15:21:24,835 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:21:24,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:21:24,836 INFO L85 PathProgramCache]: Analyzing trace with hash -225970067, now seen corresponding path program 1 times [2024-12-02 15:21:24,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:21:24,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289357715] [2024-12-02 15:21:24,836 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:21:24,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:21:26,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:21:26,750 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 15:21:26,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:21:26,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289357715] [2024-12-02 15:21:26,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289357715] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:21:26,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:21:26,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:21:26,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165887493] [2024-12-02 15:21:26,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:21:26,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:21:26,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:21:26,753 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:21:26,753 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:21:26,754 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) [2024-12-02 15:21:26,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:21:26,960 INFO L93 Difference]: Finished difference Result 4662 states and 6317 transitions. [2024-12-02 15:21:26,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:21:26,961 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 [2024-12-02 15:21:26,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:21:26,981 INFO L225 Difference]: With dead ends: 4662 [2024-12-02 15:21:26,981 INFO L226 Difference]: Without dead ends: 3110 [2024-12-02 15:21:26,987 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 [2024-12-02 15:21:26,987 INFO L435 NwaCegarLoop]: 1601 mSDtfsCounter, 1047 mSDsluCounter, 1053 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:21:26,988 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1047 Valid, 2654 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:21:26,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3110 states. [2024-12-02 15:21:27,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3110 to 3100. [2024-12-02 15:21:27,118 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) [2024-12-02 15:21:27,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3100 states to 3100 states and 4197 transitions. [2024-12-02 15:21:27,138 INFO L78 Accepts]: Start accepts. Automaton has 3100 states and 4197 transitions. Word has length 38 [2024-12-02 15:21:27,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:21:27,139 INFO L471 AbstractCegarLoop]: Abstraction has 3100 states and 4197 transitions. [2024-12-02 15:21:27,139 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) [2024-12-02 15:21:27,139 INFO L276 IsEmpty]: Start isEmpty. Operand 3100 states and 4197 transitions. [2024-12-02 15:21:27,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-12-02 15:21:27,141 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:21:27,141 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] [2024-12-02 15:21:27,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 15:21:27,141 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:21:27,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:21:27,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1584445831, now seen corresponding path program 1 times [2024-12-02 15:21:27,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:21:27,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727134492] [2024-12-02 15:21:27,142 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:21:27,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:21:28,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:21:29,173 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 15:21:29,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:21:29,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727134492] [2024-12-02 15:21:29,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727134492] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:21:29,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:21:29,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:21:29,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026142048] [2024-12-02 15:21:29,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:21:29,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:21:29,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:21:29,175 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:21:29,175 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:21:29,175 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) [2024-12-02 15:21:29,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:21:29,287 INFO L93 Difference]: Finished difference Result 3102 states and 4198 transitions. [2024-12-02 15:21:29,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:21:29,288 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 [2024-12-02 15:21:29,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:21:29,304 INFO L225 Difference]: With dead ends: 3102 [2024-12-02 15:21:29,304 INFO L226 Difference]: Without dead ends: 3099 [2024-12-02 15:21:29,306 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 [2024-12-02 15:21:29,307 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 [2024-12-02 15:21:29,307 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] [2024-12-02 15:21:29,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3099 states. [2024-12-02 15:21:29,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3099 to 3099. [2024-12-02 15:21:29,441 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) [2024-12-02 15:21:29,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3099 states to 3099 states and 4195 transitions. [2024-12-02 15:21:29,461 INFO L78 Accepts]: Start accepts. Automaton has 3099 states and 4195 transitions. Word has length 39 [2024-12-02 15:21:29,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:21:29,461 INFO L471 AbstractCegarLoop]: Abstraction has 3099 states and 4195 transitions. [2024-12-02 15:21:29,461 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) [2024-12-02 15:21:29,461 INFO L276 IsEmpty]: Start isEmpty. Operand 3099 states and 4195 transitions. [2024-12-02 15:21:29,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-12-02 15:21:29,462 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:21:29,463 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] [2024-12-02 15:21:29,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 15:21:29,463 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:21:29,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:21:29,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1872768688, now seen corresponding path program 1 times [2024-12-02 15:21:29,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:21:29,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246634834] [2024-12-02 15:21:29,463 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:21:29,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:21:30,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:21:31,057 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 15:21:31,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:21:31,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246634834] [2024-12-02 15:21:31,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246634834] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:21:31,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:21:31,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:21:31,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62885967] [2024-12-02 15:21:31,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:21:31,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:21:31,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:21:31,058 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:21:31,058 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:21:31,058 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) [2024-12-02 15:21:31,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:21:31,180 INFO L93 Difference]: Finished difference Result 3101 states and 4196 transitions. [2024-12-02 15:21:31,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:21:31,180 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 [2024-12-02 15:21:31,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:21:31,198 INFO L225 Difference]: With dead ends: 3101 [2024-12-02 15:21:31,198 INFO L226 Difference]: Without dead ends: 3098 [2024-12-02 15:21:31,200 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 [2024-12-02 15:21:31,201 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 [2024-12-02 15:21:31,201 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] [2024-12-02 15:21:31,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3098 states. [2024-12-02 15:21:31,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3098 to 3098. [2024-12-02 15:21:31,364 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) [2024-12-02 15:21:31,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3098 states to 3098 states and 4193 transitions. [2024-12-02 15:21:31,383 INFO L78 Accepts]: Start accepts. Automaton has 3098 states and 4193 transitions. Word has length 40 [2024-12-02 15:21:31,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:21:31,384 INFO L471 AbstractCegarLoop]: Abstraction has 3098 states and 4193 transitions. [2024-12-02 15:21:31,384 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) [2024-12-02 15:21:31,384 INFO L276 IsEmpty]: Start isEmpty. Operand 3098 states and 4193 transitions. [2024-12-02 15:21:31,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-12-02 15:21:31,385 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:21:31,386 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] [2024-12-02 15:21:31,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 15:21:31,386 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:21:31,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:21:31,386 INFO L85 PathProgramCache]: Analyzing trace with hash -2074119766, now seen corresponding path program 1 times [2024-12-02 15:21:31,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:21:31,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092694109] [2024-12-02 15:21:31,387 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:21:31,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:21:32,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:21:33,151 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 15:21:33,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:21:33,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092694109] [2024-12-02 15:21:33,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092694109] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:21:33,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:21:33,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:21:33,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17389152] [2024-12-02 15:21:33,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:21:33,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:21:33,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:21:33,152 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:21:33,152 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:21:33,152 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) [2024-12-02 15:21:33,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:21:33,302 INFO L93 Difference]: Finished difference Result 3100 states and 4194 transitions. [2024-12-02 15:21:33,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:21:33,302 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 [2024-12-02 15:21:33,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:21:33,319 INFO L225 Difference]: With dead ends: 3100 [2024-12-02 15:21:33,319 INFO L226 Difference]: Without dead ends: 3097 [2024-12-02 15:21:33,321 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 [2024-12-02 15:21:33,321 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 [2024-12-02 15:21:33,322 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] [2024-12-02 15:21:33,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3097 states. [2024-12-02 15:21:33,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3097 to 3097. [2024-12-02 15:21:33,482 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) [2024-12-02 15:21:33,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3097 states to 3097 states and 4191 transitions. [2024-12-02 15:21:33,497 INFO L78 Accepts]: Start accepts. Automaton has 3097 states and 4191 transitions. Word has length 41 [2024-12-02 15:21:33,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:21:33,497 INFO L471 AbstractCegarLoop]: Abstraction has 3097 states and 4191 transitions. [2024-12-02 15:21:33,498 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) [2024-12-02 15:21:33,498 INFO L276 IsEmpty]: Start isEmpty. Operand 3097 states and 4191 transitions. [2024-12-02 15:21:33,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-12-02 15:21:33,499 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:21:33,499 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] [2024-12-02 15:21:33,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 15:21:33,499 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:21:33,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:21:33,499 INFO L85 PathProgramCache]: Analyzing trace with hash 126394611, now seen corresponding path program 1 times [2024-12-02 15:21:33,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:21:33,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094731416] [2024-12-02 15:21:33,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:21:33,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:21:34,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:21:35,020 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 15:21:35,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:21:35,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094731416] [2024-12-02 15:21:35,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094731416] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:21:35,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:21:35,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:21:35,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257448334] [2024-12-02 15:21:35,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:21:35,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:21:35,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:21:35,021 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:21:35,022 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:21:35,022 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) [2024-12-02 15:21:35,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:21:35,142 INFO L93 Difference]: Finished difference Result 3099 states and 4192 transitions. [2024-12-02 15:21:35,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:21:35,142 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 [2024-12-02 15:21:35,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:21:35,159 INFO L225 Difference]: With dead ends: 3099 [2024-12-02 15:21:35,159 INFO L226 Difference]: Without dead ends: 3087 [2024-12-02 15:21:35,161 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 [2024-12-02 15:21:35,161 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 [2024-12-02 15:21:35,161 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] [2024-12-02 15:21:35,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3087 states. [2024-12-02 15:21:35,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3087 to 3087. [2024-12-02 15:21:35,324 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) [2024-12-02 15:21:35,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3087 states to 3087 states and 4177 transitions. [2024-12-02 15:21:35,338 INFO L78 Accepts]: Start accepts. Automaton has 3087 states and 4177 transitions. Word has length 42 [2024-12-02 15:21:35,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:21:35,339 INFO L471 AbstractCegarLoop]: Abstraction has 3087 states and 4177 transitions. [2024-12-02 15:21:35,339 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) [2024-12-02 15:21:35,339 INFO L276 IsEmpty]: Start isEmpty. Operand 3087 states and 4177 transitions. [2024-12-02 15:21:35,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-12-02 15:21:35,344 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:21:35,344 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] [2024-12-02 15:21:35,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 15:21:35,345 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:21:35,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:21:35,345 INFO L85 PathProgramCache]: Analyzing trace with hash 461175421, now seen corresponding path program 1 times [2024-12-02 15:21:35,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:21:35,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219324271] [2024-12-02 15:21:35,345 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:21:35,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:21:36,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:21:36,751 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 15:21:36,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:21:36,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219324271] [2024-12-02 15:21:36,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219324271] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:21:36,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:21:36,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:21:36,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613048543] [2024-12-02 15:21:36,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:21:36,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:21:36,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:21:36,754 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:21:36,754 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:21:36,754 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) [2024-12-02 15:21:36,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:21:36,971 INFO L93 Difference]: Finished difference Result 7080 states and 9490 transitions. [2024-12-02 15:21:36,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:21:36,972 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 [2024-12-02 15:21:36,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:21:36,984 INFO L225 Difference]: With dead ends: 7080 [2024-12-02 15:21:36,984 INFO L226 Difference]: Without dead ends: 4000 [2024-12-02 15:21:36,991 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 [2024-12-02 15:21:36,991 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, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:21:36,991 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 2191 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:21:36,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4000 states. [2024-12-02 15:21:37,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4000 to 3992. [2024-12-02 15:21:37,189 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) [2024-12-02 15:21:37,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3992 states to 3992 states and 5311 transitions. [2024-12-02 15:21:37,210 INFO L78 Accepts]: Start accepts. Automaton has 3992 states and 5311 transitions. Word has length 87 [2024-12-02 15:21:37,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:21:37,210 INFO L471 AbstractCegarLoop]: Abstraction has 3992 states and 5311 transitions. [2024-12-02 15:21:37,210 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) [2024-12-02 15:21:37,210 INFO L276 IsEmpty]: Start isEmpty. Operand 3992 states and 5311 transitions. [2024-12-02 15:21:37,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-12-02 15:21:37,217 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:21:37,217 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] [2024-12-02 15:21:37,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 15:21:37,217 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:21:37,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:21:37,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1577639954, now seen corresponding path program 1 times [2024-12-02 15:21:37,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:21:37,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656690458] [2024-12-02 15:21:37,218 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:21:37,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:21:38,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:21:38,707 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-12-02 15:21:38,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:21:38,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656690458] [2024-12-02 15:21:38,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656690458] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:21:38,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:21:38,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:21:38,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518930838] [2024-12-02 15:21:38,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:21:38,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:21:38,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:21:38,709 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:21:38,709 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:21:38,709 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) [2024-12-02 15:21:42,731 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 15:21:43,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:21:43,154 INFO L93 Difference]: Finished difference Result 8924 states and 11830 transitions. [2024-12-02 15:21:43,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:21:43,155 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 [2024-12-02 15:21:43,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:21:43,183 INFO L225 Difference]: With dead ends: 8924 [2024-12-02 15:21:43,183 INFO L226 Difference]: Without dead ends: 4946 [2024-12-02 15:21:43,196 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 [2024-12-02 15:21:43,197 INFO L435 NwaCegarLoop]: 1353 mSDtfsCounter, 310 mSDsluCounter, 1036 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s 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 [2024-12-02 15:21:43,197 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] [2024-12-02 15:21:43,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4946 states. [2024-12-02 15:21:43,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4946 to 4938. [2024-12-02 15:21:43,481 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) [2024-12-02 15:21:43,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4938 states to 4938 states and 6505 transitions. [2024-12-02 15:21:43,500 INFO L78 Accepts]: Start accepts. Automaton has 4938 states and 6505 transitions. Word has length 103 [2024-12-02 15:21:43,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:21:43,500 INFO L471 AbstractCegarLoop]: Abstraction has 4938 states and 6505 transitions. [2024-12-02 15:21:43,501 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) [2024-12-02 15:21:43,501 INFO L276 IsEmpty]: Start isEmpty. Operand 4938 states and 6505 transitions. [2024-12-02 15:21:43,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-12-02 15:21:43,507 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:21:43,507 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] [2024-12-02 15:21:43,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 15:21:43,507 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:21:43,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:21:43,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1585331519, now seen corresponding path program 1 times [2024-12-02 15:21:43,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:21:43,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398145988] [2024-12-02 15:21:43,508 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:21:43,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:21:44,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:21:44,993 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-12-02 15:21:44,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:21:44,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398145988] [2024-12-02 15:21:44,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398145988] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:21:44,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:21:44,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:21:44,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446950831] [2024-12-02 15:21:44,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:21:44,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:21:44,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:21:44,995 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:21:44,995 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:21:44,996 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) [2024-12-02 15:21:49,030 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 [] [2024-12-02 15:21:49,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:21:49,423 INFO L93 Difference]: Finished difference Result 11924 states and 15644 transitions. [2024-12-02 15:21:49,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:21:49,423 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 [2024-12-02 15:21:49,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:21:49,449 INFO L225 Difference]: With dead ends: 11924 [2024-12-02 15:21:49,449 INFO L226 Difference]: Without dead ends: 7000 [2024-12-02 15:21:49,463 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 [2024-12-02 15:21:49,463 INFO L435 NwaCegarLoop]: 1367 mSDtfsCounter, 838 mSDsluCounter, 869 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s 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 [2024-12-02 15:21:49,463 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] [2024-12-02 15:21:49,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7000 states. [2024-12-02 15:21:49,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7000 to 6992. [2024-12-02 15:21:49,685 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) [2024-12-02 15:21:49,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6992 states to 6992 states and 9125 transitions. [2024-12-02 15:21:49,703 INFO L78 Accepts]: Start accepts. Automaton has 6992 states and 9125 transitions. Word has length 115 [2024-12-02 15:21:49,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:21:49,703 INFO L471 AbstractCegarLoop]: Abstraction has 6992 states and 9125 transitions. [2024-12-02 15:21:49,703 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) [2024-12-02 15:21:49,703 INFO L276 IsEmpty]: Start isEmpty. Operand 6992 states and 9125 transitions. [2024-12-02 15:21:49,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-12-02 15:21:49,708 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:21:49,708 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] [2024-12-02 15:21:49,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 15:21:49,708 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:21:49,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:21:49,709 INFO L85 PathProgramCache]: Analyzing trace with hash 744643300, now seen corresponding path program 1 times [2024-12-02 15:21:49,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:21:49,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065412096] [2024-12-02 15:21:49,709 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:21:49,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:21:51,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:21:51,571 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-02 15:21:51,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:21:51,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065412096] [2024-12-02 15:21:51,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065412096] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:21:51,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185205477] [2024-12-02 15:21:51,572 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:21:51,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:21:51,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af023f07-864a-4a2d-a628-f4d33350cfae/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:21:51,574 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af023f07-864a-4a2d-a628-f4d33350cfae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:21:51,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af023f07-864a-4a2d-a628-f4d33350cfae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 15:21:53,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:21:53,811 INFO L256 TraceCheckSpWp]: Trace formula consists of 1937 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 15:21:53,818 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:21:54,786 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-12-02 15:21:54,786 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 15:21:54,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185205477] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:21:54,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 15:21:54,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2024-12-02 15:21:54,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733202712] [2024-12-02 15:21:54,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:21:54,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 15:21:54,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:21:54,788 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 15:21:54,788 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:21:54,788 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) [2024-12-02 15:21:58,812 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 [] [2024-12-02 15:22:01,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:22:01,973 INFO L93 Difference]: Finished difference Result 20950 states and 27342 transitions. [2024-12-02 15:22:01,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 15:22:01,974 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 [2024-12-02 15:22:01,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:22:02,034 INFO L225 Difference]: With dead ends: 20950 [2024-12-02 15:22:02,034 INFO L226 Difference]: Without dead ends: 20942 [2024-12-02 15:22:02,041 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 [2024-12-02 15:22:02,041 INFO L435 NwaCegarLoop]: 1284 mSDtfsCounter, 2543 mSDsluCounter, 1809 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 217 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s 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, 6.4s IncrementalHoareTripleChecker+Time [2024-12-02 15:22:02,042 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2543 Valid, 3093 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 310 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2024-12-02 15:22:02,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20942 states. [2024-12-02 15:22:02,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20942 to 20908. [2024-12-02 15:22:02,927 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) [2024-12-02 15:22:02,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20908 states to 20908 states and 27299 transitions. [2024-12-02 15:22:02,981 INFO L78 Accepts]: Start accepts. Automaton has 20908 states and 27299 transitions. Word has length 135 [2024-12-02 15:22:02,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:22:02,981 INFO L471 AbstractCegarLoop]: Abstraction has 20908 states and 27299 transitions. [2024-12-02 15:22:02,982 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) [2024-12-02 15:22:02,982 INFO L276 IsEmpty]: Start isEmpty. Operand 20908 states and 27299 transitions. [2024-12-02 15:22:02,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-12-02 15:22:02,998 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:22:02,998 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] [2024-12-02 15:22:03,010 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af023f07-864a-4a2d-a628-f4d33350cfae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 15:22:03,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af023f07-864a-4a2d-a628-f4d33350cfae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:22:03,199 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:22:03,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:22:03,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1380705662, now seen corresponding path program 1 times [2024-12-02 15:22:03,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:22:03,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200921055] [2024-12-02 15:22:03,200 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:22:03,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:22:04,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:22:05,026 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-12-02 15:22:05,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:22:05,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200921055] [2024-12-02 15:22:05,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200921055] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:22:05,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:22:05,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:22:05,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482909135] [2024-12-02 15:22:05,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:22:05,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:22:05,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:22:05,028 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:22:05,028 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:22:05,028 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) [2024-12-02 15:22:09,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 15:22:09,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:22:09,771 INFO L93 Difference]: Finished difference Result 31878 states and 41617 transitions. [2024-12-02 15:22:09,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:22:09,772 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 [2024-12-02 15:22:09,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:22:09,815 INFO L225 Difference]: With dead ends: 31878 [2024-12-02 15:22:09,815 INFO L226 Difference]: Without dead ends: 10334 [2024-12-02 15:22:09,857 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 [2024-12-02 15:22:09,857 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 [2024-12-02 15:22:09,858 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] [2024-12-02 15:22:09,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10334 states. [2024-12-02 15:22:10,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10334 to 10334. [2024-12-02 15:22:10,342 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) [2024-12-02 15:22:10,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10334 states to 10334 states and 13472 transitions. [2024-12-02 15:22:10,385 INFO L78 Accepts]: Start accepts. Automaton has 10334 states and 13472 transitions. Word has length 145 [2024-12-02 15:22:10,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:22:10,385 INFO L471 AbstractCegarLoop]: Abstraction has 10334 states and 13472 transitions. [2024-12-02 15:22:10,386 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) [2024-12-02 15:22:10,386 INFO L276 IsEmpty]: Start isEmpty. Operand 10334 states and 13472 transitions. [2024-12-02 15:22:10,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-12-02 15:22:10,397 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:22:10,397 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] [2024-12-02 15:22:10,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 15:22:10,397 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:22:10,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:22:10,398 INFO L85 PathProgramCache]: Analyzing trace with hash -240549902, now seen corresponding path program 1 times [2024-12-02 15:22:10,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:22:10,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712620523] [2024-12-02 15:22:10,398 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:22:10,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:22:11,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:22:11,961 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-12-02 15:22:11,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:22:11,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712620523] [2024-12-02 15:22:11,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712620523] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:22:11,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:22:11,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:22:11,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265910432] [2024-12-02 15:22:11,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:22:11,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:22:11,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:22:11,962 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:22:11,963 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:22:11,963 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) [2024-12-02 15:22:15,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 15:22:16,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:22:16,385 INFO L93 Difference]: Finished difference Result 19280 states and 25212 transitions. [2024-12-02 15:22:16,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:22:16,386 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 [2024-12-02 15:22:16,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:22:16,412 INFO L225 Difference]: With dead ends: 19280 [2024-12-02 15:22:16,412 INFO L226 Difference]: Without dead ends: 9692 [2024-12-02 15:22:16,427 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 [2024-12-02 15:22:16,427 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, 4.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:22:16,428 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [832 Valid, 2475 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 21 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2024-12-02 15:22:16,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9692 states. [2024-12-02 15:22:16,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9692 to 9684. [2024-12-02 15:22:16,741 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) [2024-12-02 15:22:16,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9684 states to 9684 states and 12625 transitions. [2024-12-02 15:22:16,837 INFO L78 Accepts]: Start accepts. Automaton has 9684 states and 12625 transitions. Word has length 147 [2024-12-02 15:22:16,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:22:16,837 INFO L471 AbstractCegarLoop]: Abstraction has 9684 states and 12625 transitions. [2024-12-02 15:22:16,837 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) [2024-12-02 15:22:16,838 INFO L276 IsEmpty]: Start isEmpty. Operand 9684 states and 12625 transitions. [2024-12-02 15:22:16,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-12-02 15:22:16,844 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:22:16,845 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] [2024-12-02 15:22:16,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 15:22:16,845 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:22:16,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:22:16,845 INFO L85 PathProgramCache]: Analyzing trace with hash -178510288, now seen corresponding path program 1 times [2024-12-02 15:22:16,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:22:16,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008543304] [2024-12-02 15:22:16,845 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:22:16,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:22:18,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:22:18,756 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-12-02 15:22:18,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:22:18,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008543304] [2024-12-02 15:22:18,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008543304] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:22:18,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:22:18,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 15:22:18,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993682163] [2024-12-02 15:22:18,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:22:18,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 15:22:18,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:22:18,758 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 15:22:18,758 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:22:18,759 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) [2024-12-02 15:22:19,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:22:19,344 INFO L93 Difference]: Finished difference Result 23758 states and 31015 transitions. [2024-12-02 15:22:19,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 15:22:19,344 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 [2024-12-02 15:22:19,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:22:19,403 INFO L225 Difference]: With dead ends: 23758 [2024-12-02 15:22:19,404 INFO L226 Difference]: Without dead ends: 14820 [2024-12-02 15:22:19,423 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 [2024-12-02 15:22:19,423 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 [2024-12-02 15:22:19,423 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] [2024-12-02 15:22:19,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14820 states. [2024-12-02 15:22:20,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14820 to 14758. [2024-12-02 15:22:20,080 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) [2024-12-02 15:22:20,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14758 states to 14758 states and 19248 transitions. [2024-12-02 15:22:20,132 INFO L78 Accepts]: Start accepts. Automaton has 14758 states and 19248 transitions. Word has length 147 [2024-12-02 15:22:20,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:22:20,132 INFO L471 AbstractCegarLoop]: Abstraction has 14758 states and 19248 transitions. [2024-12-02 15:22:20,132 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) [2024-12-02 15:22:20,133 INFO L276 IsEmpty]: Start isEmpty. Operand 14758 states and 19248 transitions. [2024-12-02 15:22:20,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-12-02 15:22:20,142 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:22:20,142 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] [2024-12-02 15:22:20,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 15:22:20,142 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:22:20,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:22:20,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1406441504, now seen corresponding path program 1 times [2024-12-02 15:22:20,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:22:20,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510166593] [2024-12-02 15:22:20,143 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:22:20,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:22:21,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:22:21,908 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-12-02 15:22:21,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:22:21,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510166593] [2024-12-02 15:22:21,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510166593] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:22:21,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:22:21,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 15:22:21,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368610994] [2024-12-02 15:22:21,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:22:21,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 15:22:21,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:22:21,909 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 15:22:21,909 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:22:21,910 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) [2024-12-02 15:22:22,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:22:22,512 INFO L93 Difference]: Finished difference Result 28980 states and 37991 transitions. [2024-12-02 15:22:22,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 15:22:22,513 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 [2024-12-02 15:22:22,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:22:22,576 INFO L225 Difference]: With dead ends: 28980 [2024-12-02 15:22:22,576 INFO L226 Difference]: Without dead ends: 14968 [2024-12-02 15:22:22,606 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 [2024-12-02 15:22:22,607 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 [2024-12-02 15:22:22,607 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] [2024-12-02 15:22:22,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14968 states. [2024-12-02 15:22:23,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14968 to 14911. [2024-12-02 15:22:23,416 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) [2024-12-02 15:22:23,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14911 states to 14911 states and 19545 transitions. [2024-12-02 15:22:23,459 INFO L78 Accepts]: Start accepts. Automaton has 14911 states and 19545 transitions. Word has length 147 [2024-12-02 15:22:23,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:22:23,459 INFO L471 AbstractCegarLoop]: Abstraction has 14911 states and 19545 transitions. [2024-12-02 15:22:23,459 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) [2024-12-02 15:22:23,459 INFO L276 IsEmpty]: Start isEmpty. Operand 14911 states and 19545 transitions. [2024-12-02 15:22:23,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-12-02 15:22:23,469 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:22:23,469 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] [2024-12-02 15:22:23,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 15:22:23,470 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:22:23,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:22:23,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1231457088, now seen corresponding path program 1 times [2024-12-02 15:22:23,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:22:23,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335861382] [2024-12-02 15:22:23,470 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:22:23,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:22:24,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:22:27,490 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-12-02 15:22:27,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:22:27,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335861382] [2024-12-02 15:22:27,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335861382] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:22:27,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:22:27,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-12-02 15:22:27,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980404896] [2024-12-02 15:22:27,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:22:27,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 15:22:27,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:22:27,492 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 15:22:27,492 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-12-02 15:22:27,492 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) [2024-12-02 15:22:35,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:22:35,684 INFO L93 Difference]: Finished difference Result 36242 states and 47579 transitions. [2024-12-02 15:22:35,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 15:22:35,684 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 [2024-12-02 15:22:35,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:22:35,727 INFO L225 Difference]: With dead ends: 36242 [2024-12-02 15:22:35,727 INFO L226 Difference]: Without dead ends: 22072 [2024-12-02 15:22:35,747 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=126, Invalid=474, Unknown=0, NotChecked=0, Total=600 [2024-12-02 15:22:35,748 INFO L435 NwaCegarLoop]: 1357 mSDtfsCounter, 3263 mSDsluCounter, 8282 mSDsCounter, 0 mSdLazyCounter, 1350 mSolverCounterSat, 540 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3277 SdHoareTripleChecker+Valid, 9639 SdHoareTripleChecker+Invalid, 1890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 540 IncrementalHoareTripleChecker+Valid, 1350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:22:35,748 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3277 Valid, 9639 Invalid, 1890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [540 Valid, 1350 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2024-12-02 15:22:35,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22072 states. [2024-12-02 15:22:36,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22072 to 21964. [2024-12-02 15:22:36,529 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) [2024-12-02 15:22:36,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21964 states to 21964 states and 28803 transitions. [2024-12-02 15:22:36,575 INFO L78 Accepts]: Start accepts. Automaton has 21964 states and 28803 transitions. Word has length 153 [2024-12-02 15:22:36,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:22:36,575 INFO L471 AbstractCegarLoop]: Abstraction has 21964 states and 28803 transitions. [2024-12-02 15:22:36,575 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) [2024-12-02 15:22:36,575 INFO L276 IsEmpty]: Start isEmpty. Operand 21964 states and 28803 transitions. [2024-12-02 15:22:36,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-12-02 15:22:36,585 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:22:36,585 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] [2024-12-02 15:22:36,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 15:22:36,585 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:22:36,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:22:36,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1630456095, now seen corresponding path program 1 times [2024-12-02 15:22:36,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:22:36,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471422138] [2024-12-02 15:22:36,586 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:22:36,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:22:37,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:22:37,981 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-12-02 15:22:37,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:22:37,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471422138] [2024-12-02 15:22:37,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471422138] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:22:37,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:22:37,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:22:37,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623481492] [2024-12-02 15:22:37,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:22:37,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:22:37,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:22:37,983 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:22:37,983 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:22:37,983 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) [2024-12-02 15:22:39,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:22:39,646 INFO L93 Difference]: Finished difference Result 59334 states and 77934 transitions. [2024-12-02 15:22:39,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:22:39,647 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 [2024-12-02 15:22:39,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:22:39,739 INFO L225 Difference]: With dead ends: 59334 [2024-12-02 15:22:39,739 INFO L226 Difference]: Without dead ends: 37388 [2024-12-02 15:22:39,776 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 [2024-12-02 15:22:39,776 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 [2024-12-02 15:22:39,776 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] [2024-12-02 15:22:39,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37388 states. [2024-12-02 15:22:40,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37388 to 28883. [2024-12-02 15:22:40,980 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) [2024-12-02 15:22:41,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28883 states to 28883 states and 37896 transitions. [2024-12-02 15:22:41,060 INFO L78 Accepts]: Start accepts. Automaton has 28883 states and 37896 transitions. Word has length 157 [2024-12-02 15:22:41,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:22:41,061 INFO L471 AbstractCegarLoop]: Abstraction has 28883 states and 37896 transitions. [2024-12-02 15:22:41,061 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) [2024-12-02 15:22:41,061 INFO L276 IsEmpty]: Start isEmpty. Operand 28883 states and 37896 transitions. [2024-12-02 15:22:41,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-12-02 15:22:41,084 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:22:41,085 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] [2024-12-02 15:22:41,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 15:22:41,085 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:22:41,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:22:41,085 INFO L85 PathProgramCache]: Analyzing trace with hash -724330081, now seen corresponding path program 2 times [2024-12-02 15:22:41,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:22:41,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695420247] [2024-12-02 15:22:41,086 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:22:41,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:22:42,516 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:22:42,517 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:22:42,733 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-12-02 15:22:42,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:22:42,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695420247] [2024-12-02 15:22:42,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695420247] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:22:42,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:22:42,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:22:42,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508873664] [2024-12-02 15:22:42,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:22:42,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:22:42,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:22:42,735 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:22:42,735 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:22:42,735 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) [2024-12-02 15:22:46,763 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 [] [2024-12-02 15:22:48,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:22:48,531 INFO L93 Difference]: Finished difference Result 68432 states and 89777 transitions. [2024-12-02 15:22:48,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:22:48,531 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 [2024-12-02 15:22:48,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:22:48,668 INFO L225 Difference]: With dead ends: 68432 [2024-12-02 15:22:48,668 INFO L226 Difference]: Without dead ends: 39567 [2024-12-02 15:22:48,730 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 [2024-12-02 15:22:48,730 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, 4.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:22:48,731 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1021 Valid, 2589 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2024-12-02 15:22:48,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39567 states. [2024-12-02 15:22:50,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39567 to 33917. [2024-12-02 15:22:50,180 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) [2024-12-02 15:22:50,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33917 states to 33917 states and 44503 transitions. [2024-12-02 15:22:50,272 INFO L78 Accepts]: Start accepts. Automaton has 33917 states and 44503 transitions. Word has length 157 [2024-12-02 15:22:50,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:22:50,272 INFO L471 AbstractCegarLoop]: Abstraction has 33917 states and 44503 transitions. [2024-12-02 15:22:50,272 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) [2024-12-02 15:22:50,272 INFO L276 IsEmpty]: Start isEmpty. Operand 33917 states and 44503 transitions. [2024-12-02 15:22:50,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-12-02 15:22:50,286 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:22:50,286 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] [2024-12-02 15:22:50,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 15:22:50,286 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:22:50,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:22:50,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1252883586, now seen corresponding path program 1 times [2024-12-02 15:22:50,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:22:50,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436140941] [2024-12-02 15:22:50,287 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:22:50,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:22:51,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:22:55,046 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-12-02 15:22:55,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:22:55,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436140941] [2024-12-02 15:22:55,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436140941] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:22:55,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263237652] [2024-12-02 15:22:55,047 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:22:55,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:22:55,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af023f07-864a-4a2d-a628-f4d33350cfae/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:22:55,049 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af023f07-864a-4a2d-a628-f4d33350cfae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:22:55,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af023f07-864a-4a2d-a628-f4d33350cfae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 15:22:57,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:22:57,318 INFO L256 TraceCheckSpWp]: Trace formula consists of 2069 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-12-02 15:22:57,326 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:22:59,941 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-12-02 15:22:59,941 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:23:03,342 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-12-02 15:23:03,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263237652] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 15:23:03,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-12-02 15:23:03,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [16, 16] total 33 [2024-12-02 15:23:03,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300455070] [2024-12-02 15:23:03,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:23:03,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 15:23:03,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:23:03,344 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 15:23:03,345 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=933, Unknown=0, NotChecked=0, Total=1056 [2024-12-02 15:23:03,345 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) [2024-12-02 15:23:27,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:23:27,731 INFO L93 Difference]: Finished difference Result 79079 states and 103813 transitions. [2024-12-02 15:23:27,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 15:23:27,732 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 [2024-12-02 15:23:27,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:23:27,842 INFO L225 Difference]: With dead ends: 79079 [2024-12-02 15:23:27,842 INFO L226 Difference]: Without dead ends: 45468 [2024-12-02 15:23:27,890 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=138, Invalid=1052, Unknown=0, NotChecked=0, Total=1190 [2024-12-02 15:23:27,890 INFO L435 NwaCegarLoop]: 1183 mSDtfsCounter, 7089 mSDsluCounter, 2321 mSDsCounter, 0 mSdLazyCounter, 4497 mSolverCounterSat, 2336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.8s 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, 21.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:23:27,890 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7158 Valid, 3504 Invalid, 6833 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2336 Valid, 4497 Invalid, 0 Unknown, 0 Unchecked, 21.2s Time] [2024-12-02 15:23:27,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45468 states. [2024-12-02 15:23:30,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45468 to 44931. [2024-12-02 15:23:30,274 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) [2024-12-02 15:23:30,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44931 states to 44931 states and 58960 transitions. [2024-12-02 15:23:30,396 INFO L78 Accepts]: Start accepts. Automaton has 44931 states and 58960 transitions. Word has length 171 [2024-12-02 15:23:30,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:23:30,396 INFO L471 AbstractCegarLoop]: Abstraction has 44931 states and 58960 transitions. [2024-12-02 15:23:30,396 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) [2024-12-02 15:23:30,396 INFO L276 IsEmpty]: Start isEmpty. Operand 44931 states and 58960 transitions. [2024-12-02 15:23:30,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-12-02 15:23:30,414 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:23:30,415 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] [2024-12-02 15:23:30,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af023f07-864a-4a2d-a628-f4d33350cfae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-12-02 15:23:30,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af023f07-864a-4a2d-a628-f4d33350cfae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:23:30,615 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:23:30,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:23:30,616 INFO L85 PathProgramCache]: Analyzing trace with hash -418702881, now seen corresponding path program 1 times [2024-12-02 15:23:30,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:23:30,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502341556] [2024-12-02 15:23:30,616 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:23:30,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:23:31,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:23:32,067 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-12-02 15:23:32,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:23:32,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502341556] [2024-12-02 15:23:32,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502341556] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:23:32,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:23:32,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 15:23:32,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715203478] [2024-12-02 15:23:32,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:23:32,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 15:23:32,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:23:32,069 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 15:23:32,069 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:23:32,069 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) [2024-12-02 15:23:36,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 15:23:40,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:23:40,250 INFO L93 Difference]: Finished difference Result 113190 states and 148458 transitions. [2024-12-02 15:23:40,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 15:23:40,250 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 [2024-12-02 15:23:40,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:23:40,453 INFO L225 Difference]: With dead ends: 113190 [2024-12-02 15:23:40,453 INFO L226 Difference]: Without dead ends: 68277 [2024-12-02 15:23:40,533 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 [2024-12-02 15:23:40,533 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 [2024-12-02 15:23:40,534 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] [2024-12-02 15:23:40,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68277 states. [2024-12-02 15:23:43,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68277 to 45025. [2024-12-02 15:23:43,503 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) [2024-12-02 15:23:43,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45025 states to 45025 states and 59054 transitions. [2024-12-02 15:23:43,619 INFO L78 Accepts]: Start accepts. Automaton has 45025 states and 59054 transitions. Word has length 178 [2024-12-02 15:23:43,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:23:43,620 INFO L471 AbstractCegarLoop]: Abstraction has 45025 states and 59054 transitions. [2024-12-02 15:23:43,620 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) [2024-12-02 15:23:43,620 INFO L276 IsEmpty]: Start isEmpty. Operand 45025 states and 59054 transitions. [2024-12-02 15:23:43,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-12-02 15:23:43,635 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:23:43,635 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] [2024-12-02 15:23:43,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 15:23:43,635 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:23:43,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:23:43,635 INFO L85 PathProgramCache]: Analyzing trace with hash -458803035, now seen corresponding path program 1 times [2024-12-02 15:23:43,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:23:43,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169601423] [2024-12-02 15:23:43,635 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:23:43,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:23:44,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:23:45,055 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-12-02 15:23:45,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:23:45,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169601423] [2024-12-02 15:23:45,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169601423] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:23:45,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:23:45,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 15:23:45,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334450742] [2024-12-02 15:23:45,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:23:45,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 15:23:45,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:23:45,056 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 15:23:45,057 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:23:45,057 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) [2024-12-02 15:23:49,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 15:23:53,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:23:53,051 INFO L93 Difference]: Finished difference Result 113425 states and 148693 transitions. [2024-12-02 15:23:53,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 15:23:53,052 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 [2024-12-02 15:23:53,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:23:53,241 INFO L225 Difference]: With dead ends: 113425 [2024-12-02 15:23:53,241 INFO L226 Difference]: Without dead ends: 68418 [2024-12-02 15:23:53,329 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 [2024-12-02 15:23:53,330 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, 4.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:23:53,330 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1043 Valid, 5246 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2024-12-02 15:23:53,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68418 states. [2024-12-02 15:23:56,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68418 to 45025. [2024-12-02 15:23:56,973 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) [2024-12-02 15:23:57,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45025 states to 45025 states and 59054 transitions. [2024-12-02 15:23:57,102 INFO L78 Accepts]: Start accepts. Automaton has 45025 states and 59054 transitions. Word has length 186 [2024-12-02 15:23:57,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:23:57,102 INFO L471 AbstractCegarLoop]: Abstraction has 45025 states and 59054 transitions. [2024-12-02 15:23:57,102 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) [2024-12-02 15:23:57,102 INFO L276 IsEmpty]: Start isEmpty. Operand 45025 states and 59054 transitions. [2024-12-02 15:23:57,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-12-02 15:23:57,119 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:23:57,119 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] [2024-12-02 15:23:57,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 15:23:57,119 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:23:57,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:23:57,120 INFO L85 PathProgramCache]: Analyzing trace with hash 597489368, now seen corresponding path program 1 times [2024-12-02 15:23:57,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:23:57,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325125713] [2024-12-02 15:23:57,120 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:23:57,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:23:58,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:23:58,725 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-12-02 15:23:58,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:23:58,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325125713] [2024-12-02 15:23:58,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325125713] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:23:58,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:23:58,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 15:23:58,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354620790] [2024-12-02 15:23:58,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:23:58,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 15:23:58,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:23:58,727 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 15:23:58,727 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 15:23:58,727 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) [2024-12-02 15:24:01,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:24:01,815 INFO L93 Difference]: Finished difference Result 90381 states and 118679 transitions. [2024-12-02 15:24:01,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 15:24:01,815 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 [2024-12-02 15:24:01,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:24:01,935 INFO L225 Difference]: With dead ends: 90381 [2024-12-02 15:24:01,935 INFO L226 Difference]: Without dead ends: 45669 [2024-12-02 15:24:01,994 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 15:24:01,995 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, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:24:01,995 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 6356 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 15:24:02,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45669 states. [2024-12-02 15:24:04,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45669 to 45265. [2024-12-02 15:24:04,823 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) [2024-12-02 15:24:04,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45265 states to 45265 states and 59334 transitions. [2024-12-02 15:24:04,950 INFO L78 Accepts]: Start accepts. Automaton has 45265 states and 59334 transitions. Word has length 204 [2024-12-02 15:24:04,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:24:04,951 INFO L471 AbstractCegarLoop]: Abstraction has 45265 states and 59334 transitions. [2024-12-02 15:24:04,951 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) [2024-12-02 15:24:04,951 INFO L276 IsEmpty]: Start isEmpty. Operand 45265 states and 59334 transitions. [2024-12-02 15:24:04,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-12-02 15:24:04,963 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:24:04,963 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] [2024-12-02 15:24:04,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 15:24:04,963 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:24:04,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:24:04,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1629407924, now seen corresponding path program 1 times [2024-12-02 15:24:04,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:24:04,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832495296] [2024-12-02 15:24:04,964 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:24:04,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:24:06,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:24:06,884 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-12-02 15:24:06,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:24:06,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832495296] [2024-12-02 15:24:06,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832495296] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:24:06,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806687973] [2024-12-02 15:24:06,885 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:24:06,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:24:06,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af023f07-864a-4a2d-a628-f4d33350cfae/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:24:06,887 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af023f07-864a-4a2d-a628-f4d33350cfae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:24:06,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af023f07-864a-4a2d-a628-f4d33350cfae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 15:24:09,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:24:09,148 INFO L256 TraceCheckSpWp]: Trace formula consists of 2302 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 15:24:09,153 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:24:09,191 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-12-02 15:24:09,191 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 15:24:09,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806687973] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:24:09,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 15:24:09,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-12-02 15:24:09,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493638833] [2024-12-02 15:24:09,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:24:09,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:24:09,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:24:09,193 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:24:09,193 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:24:09,193 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) [2024-12-02 15:24:11,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:24:11,878 INFO L93 Difference]: Finished difference Result 90297 states and 118447 transitions. [2024-12-02 15:24:11,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:24:11,878 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 [2024-12-02 15:24:11,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:24:12,020 INFO L225 Difference]: With dead ends: 90297 [2024-12-02 15:24:12,021 INFO L226 Difference]: Without dead ends: 45345 [2024-12-02 15:24:12,096 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 [2024-12-02 15:24:12,098 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 [2024-12-02 15:24:12,098 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] [2024-12-02 15:24:12,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45345 states. [2024-12-02 15:24:14,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45345 to 45345. [2024-12-02 15:24:14,873 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) [2024-12-02 15:24:14,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45345 states to 45345 states and 59414 transitions. [2024-12-02 15:24:15,005 INFO L78 Accepts]: Start accepts. Automaton has 45345 states and 59414 transitions. Word has length 205 [2024-12-02 15:24:15,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:24:15,006 INFO L471 AbstractCegarLoop]: Abstraction has 45345 states and 59414 transitions. [2024-12-02 15:24:15,006 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) [2024-12-02 15:24:15,006 INFO L276 IsEmpty]: Start isEmpty. Operand 45345 states and 59414 transitions. [2024-12-02 15:24:15,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2024-12-02 15:24:15,019 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:24:15,019 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] [2024-12-02 15:24:15,030 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af023f07-864a-4a2d-a628-f4d33350cfae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 15:24:15,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af023f07-864a-4a2d-a628-f4d33350cfae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:24:15,220 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:24:15,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:24:15,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1879877932, now seen corresponding path program 1 times [2024-12-02 15:24:15,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:24:15,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243545469] [2024-12-02 15:24:15,220 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:24:15,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:24:16,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:24:17,224 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-12-02 15:24:17,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:24:17,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243545469] [2024-12-02 15:24:17,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243545469] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:24:17,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:24:17,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 15:24:17,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593715808] [2024-12-02 15:24:17,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:24:17,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 15:24:17,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:24:17,226 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 15:24:17,226 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 15:24:17,226 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) [2024-12-02 15:24:19,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:24:19,959 INFO L93 Difference]: Finished difference Result 90691 states and 118831 transitions. [2024-12-02 15:24:19,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 15:24:19,960 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 [2024-12-02 15:24:19,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:24:20,095 INFO L225 Difference]: With dead ends: 90691 [2024-12-02 15:24:20,096 INFO L226 Difference]: Without dead ends: 45659 [2024-12-02 15:24:20,160 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 [2024-12-02 15:24:20,161 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 [2024-12-02 15:24:20,161 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] [2024-12-02 15:24:20,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45659 states. [2024-12-02 15:24:22,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45659 to 45545. [2024-12-02 15:24:22,951 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) [2024-12-02 15:24:23,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45545 states to 45545 states and 59614 transitions. [2024-12-02 15:24:23,088 INFO L78 Accepts]: Start accepts. Automaton has 45545 states and 59614 transitions. Word has length 213 [2024-12-02 15:24:23,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:24:23,089 INFO L471 AbstractCegarLoop]: Abstraction has 45545 states and 59614 transitions. [2024-12-02 15:24:23,089 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) [2024-12-02 15:24:23,089 INFO L276 IsEmpty]: Start isEmpty. Operand 45545 states and 59614 transitions. [2024-12-02 15:24:23,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-12-02 15:24:23,102 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:24:23,103 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] [2024-12-02 15:24:23,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-12-02 15:24:23,103 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:24:23,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:24:23,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1050260300, now seen corresponding path program 1 times [2024-12-02 15:24:23,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:24:23,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555257135] [2024-12-02 15:24:23,104 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:24:23,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:24:24,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:24:25,072 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-12-02 15:24:25,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:24:25,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555257135] [2024-12-02 15:24:25,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555257135] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:24:25,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:24:25,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 15:24:25,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017754604] [2024-12-02 15:24:25,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:24:25,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 15:24:25,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:24:25,073 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 15:24:25,073 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 15:24:25,073 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) [2024-12-02 15:24:28,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:24:28,238 INFO L93 Difference]: Finished difference Result 91594 states and 120059 transitions. [2024-12-02 15:24:28,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 15:24:28,239 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 [2024-12-02 15:24:28,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:24:28,380 INFO L225 Difference]: With dead ends: 91594 [2024-12-02 15:24:28,380 INFO L226 Difference]: Without dead ends: 46362 [2024-12-02 15:24:28,444 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-12-02 15:24:28,445 INFO L435 NwaCegarLoop]: 1045 mSDtfsCounter, 15 mSDsluCounter, 5206 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 15:24:28,445 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 6251 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 15:24:28,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46362 states. [2024-12-02 15:24:31,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46362 to 45745. [2024-12-02 15:24:31,285 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) [2024-12-02 15:24:31,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45745 states to 45745 states and 59934 transitions. [2024-12-02 15:24:31,426 INFO L78 Accepts]: Start accepts. Automaton has 45745 states and 59934 transitions. Word has length 219 [2024-12-02 15:24:31,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:24:31,426 INFO L471 AbstractCegarLoop]: Abstraction has 45745 states and 59934 transitions. [2024-12-02 15:24:31,427 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) [2024-12-02 15:24:31,427 INFO L276 IsEmpty]: Start isEmpty. Operand 45745 states and 59934 transitions. [2024-12-02 15:24:31,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-12-02 15:24:31,440 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:24:31,441 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] [2024-12-02 15:24:31,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-12-02 15:24:31,441 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:24:31,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:24:31,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1727896145, now seen corresponding path program 1 times [2024-12-02 15:24:31,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:24:31,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38193215] [2024-12-02 15:24:31,441 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:24:31,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:24:32,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:24:36,267 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 30 proven. 4 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-12-02 15:24:36,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:24:36,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38193215] [2024-12-02 15:24:36,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38193215] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:24:36,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470589210] [2024-12-02 15:24:36,268 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:24:36,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:24:36,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af023f07-864a-4a2d-a628-f4d33350cfae/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:24:36,270 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af023f07-864a-4a2d-a628-f4d33350cfae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:24:36,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af023f07-864a-4a2d-a628-f4d33350cfae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 15:24:38,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:24:38,655 INFO L256 TraceCheckSpWp]: Trace formula consists of 2372 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-12-02 15:24:38,662 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:24:41,666 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 39 proven. 4 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-12-02 15:24:41,667 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:24:45,525 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-12-02 15:24:45,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470589210] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 15:24:45,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-12-02 15:24:45,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [16, 16] total 33 [2024-12-02 15:24:45,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125215330] [2024-12-02 15:24:45,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:24:45,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 15:24:45,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:24:45,527 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 15:24:45,528 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=933, Unknown=0, NotChecked=0, Total=1056 [2024-12-02 15:24:45,528 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) [2024-12-02 15:25:13,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:25:13,521 INFO L93 Difference]: Finished difference Result 113983 states and 149406 transitions. [2024-12-02 15:25:13,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 15:25:13,521 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 [2024-12-02 15:25:13,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:25:13,738 INFO L225 Difference]: With dead ends: 113983 [2024-12-02 15:25:13,738 INFO L226 Difference]: Without dead ends: 68546 [2024-12-02 15:25:13,827 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=138, Invalid=1052, Unknown=0, NotChecked=0, Total=1190 [2024-12-02 15:25:13,827 INFO L435 NwaCegarLoop]: 1075 mSDtfsCounter, 5595 mSDsluCounter, 2328 mSDsCounter, 0 mSdLazyCounter, 5166 mSolverCounterSat, 1787 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.3s 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, 22.8s IncrementalHoareTripleChecker+Time [2024-12-02 15:25:13,827 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5659 Valid, 3403 Invalid, 6953 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1787 Valid, 5166 Invalid, 0 Unknown, 0 Unchecked, 22.8s Time] [2024-12-02 15:25:13,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68546 states. [2024-12-02 15:25:17,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68546 to 45675. [2024-12-02 15:25:17,389 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) [2024-12-02 15:25:17,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45675 states to 45675 states and 59824 transitions. [2024-12-02 15:25:17,542 INFO L78 Accepts]: Start accepts. Automaton has 45675 states and 59824 transitions. Word has length 221 [2024-12-02 15:25:17,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:25:17,543 INFO L471 AbstractCegarLoop]: Abstraction has 45675 states and 59824 transitions. [2024-12-02 15:25:17,543 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) [2024-12-02 15:25:17,543 INFO L276 IsEmpty]: Start isEmpty. Operand 45675 states and 59824 transitions. [2024-12-02 15:25:17,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-12-02 15:25:17,560 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:25:17,560 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] [2024-12-02 15:25:17,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af023f07-864a-4a2d-a628-f4d33350cfae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-12-02 15:25:17,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af023f07-864a-4a2d-a628-f4d33350cfae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:25:17,761 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:25:17,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:25:17,761 INFO L85 PathProgramCache]: Analyzing trace with hash -54317573, now seen corresponding path program 1 times [2024-12-02 15:25:17,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:25:17,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862488009] [2024-12-02 15:25:17,761 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:25:17,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:25:18,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:25:19,060 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-12-02 15:25:19,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:25:19,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862488009] [2024-12-02 15:25:19,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862488009] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:25:19,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:25:19,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:25:19,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680806002] [2024-12-02 15:25:19,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:25:19,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:25:19,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:25:19,062 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:25:19,062 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:25:19,062 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) [2024-12-02 15:25:22,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:25:22,369 INFO L93 Difference]: Finished difference Result 91426 states and 119769 transitions. [2024-12-02 15:25:22,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:25:22,369 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 [2024-12-02 15:25:22,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:25:22,517 INFO L225 Difference]: With dead ends: 91426 [2024-12-02 15:25:22,517 INFO L226 Difference]: Without dead ends: 45769 [2024-12-02 15:25:22,578 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 [2024-12-02 15:25:22,579 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, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:25:22,579 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2112 Invalid, 7 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:25:22,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45769 states. [2024-12-02 15:25:25,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45769 to 45722. [2024-12-02 15:25:25,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45722 states, 35396 states have (on average 1.2756808678946774) internal successors, (45154), 35873 states have internal predecessors, (45154), 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) [2024-12-02 15:25:25,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45722 states to 45722 states and 59871 transitions. [2024-12-02 15:25:26,042 INFO L78 Accepts]: Start accepts. Automaton has 45722 states and 59871 transitions. Word has length 231 [2024-12-02 15:25:26,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:25:26,043 INFO L471 AbstractCegarLoop]: Abstraction has 45722 states and 59871 transitions. [2024-12-02 15:25:26,043 INFO L472 AbstractCegarLoop]: INTERPOLANT 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) [2024-12-02 15:25:26,043 INFO L276 IsEmpty]: Start isEmpty. Operand 45722 states and 59871 transitions. [2024-12-02 15:25:26,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2024-12-02 15:25:26,060 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:25:26,060 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, 1, 1] [2024-12-02 15:25:26,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-12-02 15:25:26,060 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:25:26,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:25:26,061 INFO L85 PathProgramCache]: Analyzing trace with hash -948130057, now seen corresponding path program 1 times [2024-12-02 15:25:26,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:25:26,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959723289] [2024-12-02 15:25:26,061 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:25:26,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:25:28,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:25:28,385 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-12-02 15:25:28,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:25:28,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959723289] [2024-12-02 15:25:28,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959723289] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:25:28,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397732751] [2024-12-02 15:25:28,385 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:25:28,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:25:28,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af023f07-864a-4a2d-a628-f4d33350cfae/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:25:28,387 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af023f07-864a-4a2d-a628-f4d33350cfae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:25:28,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af023f07-864a-4a2d-a628-f4d33350cfae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 15:25:31,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:25:31,171 INFO L256 TraceCheckSpWp]: Trace formula consists of 2859 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 15:25:31,175 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:25:31,224 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-12-02 15:25:31,224 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:25:31,697 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-12-02 15:25:31,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397732751] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:25:31,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:25:31,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-12-02 15:25:31,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072467144] [2024-12-02 15:25:31,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:25:31,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 15:25:31,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:25:31,699 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 15:25:31,699 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-12-02 15:25:31,699 INFO L87 Difference]: Start difference. First operand 45722 states and 59871 transitions. Second operand has 7 states, 7 states have (on average 26.285714285714285) internal successors, (184), 7 states have internal predecessors, (184), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2024-12-02 15:25:34,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:25:34,884 INFO L93 Difference]: Finished difference Result 91708 states and 120145 transitions. [2024-12-02 15:25:34,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 15:25:34,884 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.285714285714285) internal successors, (184), 7 states have internal predecessors, (184), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 233 [2024-12-02 15:25:34,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:25:35,049 INFO L225 Difference]: With dead ends: 91708 [2024-12-02 15:25:35,049 INFO L226 Difference]: Without dead ends: 46004 [2024-12-02 15:25:35,124 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 463 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-12-02 15:25:35,125 INFO L435 NwaCegarLoop]: 1058 mSDtfsCounter, 2 mSDsluCounter, 1054 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2112 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:25:35,125 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2112 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:25:35,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46004 states. [2024-12-02 15:25:38,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46004 to 46004. [2024-12-02 15:25:38,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46004 states, 35678 states have (on average 1.2735018779079545) internal successors, (45436), 36155 states have internal predecessors, (45436), 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) [2024-12-02 15:25:38,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46004 states to 46004 states and 60153 transitions. [2024-12-02 15:25:38,731 INFO L78 Accepts]: Start accepts. Automaton has 46004 states and 60153 transitions. Word has length 233 [2024-12-02 15:25:38,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:25:38,731 INFO L471 AbstractCegarLoop]: Abstraction has 46004 states and 60153 transitions. [2024-12-02 15:25:38,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.285714285714285) internal successors, (184), 7 states have internal predecessors, (184), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2024-12-02 15:25:38,732 INFO L276 IsEmpty]: Start isEmpty. Operand 46004 states and 60153 transitions. [2024-12-02 15:25:38,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2024-12-02 15:25:38,750 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:25:38,750 INFO L218 NwaCegarLoop]: trace histogram [7, 5, 4, 4, 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] [2024-12-02 15:25:38,763 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af023f07-864a-4a2d-a628-f4d33350cfae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 15:25:38,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af023f07-864a-4a2d-a628-f4d33350cfae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-12-02 15:25:38,950 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:25:38,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:25:38,951 INFO L85 PathProgramCache]: Analyzing trace with hash -168929301, now seen corresponding path program 2 times [2024-12-02 15:25:38,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:25:38,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108166041] [2024-12-02 15:25:38,951 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:25:38,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:25:40,121 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:25:40,121 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:25:40,400 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 48 proven. 6 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-12-02 15:25:40,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:25:40,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108166041] [2024-12-02 15:25:40,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108166041] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:25:40,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117212324] [2024-12-02 15:25:40,400 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:25:40,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:25:40,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af023f07-864a-4a2d-a628-f4d33350cfae/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:25:40,402 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af023f07-864a-4a2d-a628-f4d33350cfae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:25:40,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af023f07-864a-4a2d-a628-f4d33350cfae/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process