./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--watchdog--it87_wdt.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--watchdog--it87_wdt.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash fe8c4b1a27642c802f8c97577aadb7892fddcd015ae43c580aa1247dba190651 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 00:45:04,382 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:45:04,468 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-24 00:45:04,473 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:45:04,474 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:45:04,510 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:45:04,511 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:45:04,511 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:45:04,511 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:45:04,511 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:45:04,511 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:45:04,512 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:45:04,513 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:45:04,513 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:45:04,514 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:45:04,514 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:45:04,514 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 00:45:04,514 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 00:45:04,515 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:45:04,515 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 00:45:04,515 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:45:04,515 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 00:45:04,515 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 00:45:04,515 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:45:04,515 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:45:04,515 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:45:04,515 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:45:04,515 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:45:04,516 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:45:04,516 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:45:04,516 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:45:04,516 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:45:04,516 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:45:04,516 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:45:04,516 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:45:04,517 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:45:04,517 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:45:04,517 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 00:45:04,517 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 00:45:04,517 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 00:45:04,517 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 00:45:04,517 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:45:04,517 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:45:04,517 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:45:04,518 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:45:04,518 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_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe8c4b1a27642c802f8c97577aadb7892fddcd015ae43c580aa1247dba190651 [2024-11-24 00:45:04,851 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:45:04,864 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:45:04,867 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:45:04,868 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:45:04,869 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:45:04,870 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--watchdog--it87_wdt.ko-entry_point.cil.out.i [2024-11-24 00:45:07,841 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/data/a07bd8053/f97010c955334109a270d6fbcc5ad8ca/FLAG2d0e52501 [2024-11-24 00:45:08,340 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:45:08,341 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--watchdog--it87_wdt.ko-entry_point.cil.out.i [2024-11-24 00:45:08,386 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/data/a07bd8053/f97010c955334109a270d6fbcc5ad8ca/FLAG2d0e52501 [2024-11-24 00:45:08,431 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/data/a07bd8053/f97010c955334109a270d6fbcc5ad8ca [2024-11-24 00:45:08,433 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:45:08,436 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:45:08,438 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:45:08,438 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:45:08,443 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:45:08,446 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:45:08" (1/1) ... [2024-11-24 00:45:08,447 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28db076e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:45:08, skipping insertion in model container [2024-11-24 00:45:08,447 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:45:08" (1/1) ... [2024-11-24 00:45:08,550 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:45:09,402 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_c6adfe70-2fea-4c74-a55a-03b516404e59/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--watchdog--it87_wdt.ko-entry_point.cil.out.i[120162,120175] [2024-11-24 00:45:09,438 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:45:09,456 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:45:09,595 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"); [3119] [2024-11-24 00:45:09,597 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)); [3126] [2024-11-24 00:45:09,598 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 %2, %0; setc %1": "+m" (*addr), "=qm" (c): "Ir" (nr): "memory"); [3134-3135] [2024-11-24 00:45:09,598 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, %0; setc %1": "+m" (*addr), "=qm" (c): "Ir" (nr): "memory"); [3143-3144] [2024-11-24 00:45:09,600 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("outb %b0, %w1": : "a" (value), "Nd" (port)); [3164] [2024-11-24 00:45:09,600 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("inb %w1, %b0": "=a" (value): "Nd" (port)); [3172] [2024-11-24 00:45:09,641 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __get_user_%P3": "=a" (__ret_gu), "=r" (__val_gu): "0" (buf + ofs), "i" (1UL)); [3673-3674] [2024-11-24 00:45:09,651 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_1": "=a" (__ret_pu): "0" (__pu_val), "c" (uarg.i): "ebx"); [3734] [2024-11-24 00:45:09,652 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_2": "=a" (__ret_pu): "0" (__pu_val), "c" (uarg.i): "ebx"); [3737] [2024-11-24 00:45:09,652 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_4": "=a" (__ret_pu): "0" (__pu_val), "c" (uarg.i): "ebx"); [3740] [2024-11-24 00:45:09,653 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_8": "=a" (__ret_pu): "0" (__pu_val), "c" (uarg.i): "ebx"); [3743] [2024-11-24 00:45:09,653 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_X": "=a" (__ret_pu): "0" (__pu_val), "c" (uarg.i): "ebx"); [3746] [2024-11-24 00:45:09,656 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_1": "=a" (__ret_pu___0): "0" (__pu_val___0), "c" (uarg.i): "ebx"); [3757-3758] [2024-11-24 00:45:09,656 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_2": "=a" (__ret_pu___0): "0" (__pu_val___0), "c" (uarg.i): "ebx"); [3761-3762] [2024-11-24 00:45:09,656 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_4": "=a" (__ret_pu___0): "0" (__pu_val___0), "c" (uarg.i): "ebx"); [3765-3766] [2024-11-24 00:45:09,656 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_8": "=a" (__ret_pu___0): "0" (__pu_val___0), "c" (uarg.i): "ebx"); [3769-3770] [2024-11-24 00:45:09,657 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_X": "=a" (__ret_pu___0): "0" (__pu_val___0), "c" (uarg.i): "ebx"); [3773-3774] [2024-11-24 00:45:09,657 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __get_user_%P3": "=a" (__ret_gu), "=r" (__val_gu): "0" (uarg.i), "i" (4UL)); [3785-3786] [2024-11-24 00:45:09,662 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __get_user_%P3": "=a" (__ret_gu___0), "=r" (__val_gu___0): "0" (uarg.i), "i" (4UL)); [3823-3824] [2024-11-24 00:45:09,663 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_1": "=a" (__ret_pu___1): "0" (__pu_val___1), "c" (uarg.i): "ebx"); [3837-3838] [2024-11-24 00:45:09,664 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_2": "=a" (__ret_pu___1): "0" (__pu_val___1), "c" (uarg.i): "ebx"); [3841-3842] [2024-11-24 00:45:09,664 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_4": "=a" (__ret_pu___1): "0" (__pu_val___1), "c" (uarg.i): "ebx"); [3845-3846] [2024-11-24 00:45:09,664 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_8": "=a" (__ret_pu___1): "0" (__pu_val___1), "c" (uarg.i): "ebx"); [3849-3850] [2024-11-24 00:45:09,664 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_X": "=a" (__ret_pu___1): "0" (__pu_val___1), "c" (uarg.i): "ebx"); [3853-3854] [2024-11-24 00:45:09,717 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_c6adfe70-2fea-4c74-a55a-03b516404e59/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--watchdog--it87_wdt.ko-entry_point.cil.out.i[120162,120175] [2024-11-24 00:45:09,732 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:45:09,773 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:45:09,774 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:45:09 WrapperNode [2024-11-24 00:45:09,774 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:45:09,775 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:45:09,776 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:45:09,776 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:45:09,783 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:45:09" (1/1) ... [2024-11-24 00:45:09,857 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:45:09" (1/1) ... [2024-11-24 00:45:09,927 INFO L138 Inliner]: procedures = 96, calls = 407, calls flagged for inlining = 31, calls inlined = 28, statements flattened = 1254 [2024-11-24 00:45:09,935 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:45:09,936 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:45:09,936 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:45:09,936 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:45:09,946 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:45:09" (1/1) ... [2024-11-24 00:45:09,947 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:45:09" (1/1) ... [2024-11-24 00:45:09,962 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:45:09" (1/1) ... [2024-11-24 00:45:10,024 INFO L175 MemorySlicer]: Split 104 memory accesses to 11 slices as follows [2, 3, 2, 29, 8, 3, 0, 1, 34, 13, 9]. 33 percent of accesses are in the largest equivalence class. The 40 initializations are split as follows [2, 1, 0, 0, 0, 3, 0, 0, 34, 0, 0]. The 50 writes are split as follows [0, 1, 1, 29, 4, 0, 0, 1, 0, 12, 2]. [2024-11-24 00:45:10,024 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:45:09" (1/1) ... [2024-11-24 00:45:10,024 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:45:09" (1/1) ... [2024-11-24 00:45:10,057 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:45:09" (1/1) ... [2024-11-24 00:45:10,063 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:45:09" (1/1) ... [2024-11-24 00:45:10,078 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:45:09" (1/1) ... [2024-11-24 00:45:10,095 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:45:09" (1/1) ... [2024-11-24 00:45:10,106 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:45:09" (1/1) ... [2024-11-24 00:45:10,133 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:45:10,134 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:45:10,134 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:45:10,134 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:45:10,135 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:45:09" (1/1) ... [2024-11-24 00:45:10,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:45:10,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:45:10,174 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 00:45:10,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 00:45:10,210 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 00:45:10,211 INFO L130 BoogieDeclarations]: Found specification of procedure superio_inw [2024-11-24 00:45:10,211 INFO L138 BoogieDeclarations]: Found implementation of procedure superio_inw [2024-11-24 00:45:10,212 INFO L130 BoogieDeclarations]: Found specification of procedure superio_outw [2024-11-24 00:45:10,212 INFO L138 BoogieDeclarations]: Found implementation of procedure superio_outw [2024-11-24 00:45:10,212 INFO L130 BoogieDeclarations]: Found specification of procedure wdt_stop [2024-11-24 00:45:10,212 INFO L138 BoogieDeclarations]: Found implementation of procedure wdt_stop [2024-11-24 00:45:10,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-24 00:45:10,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-24 00:45:10,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-24 00:45:10,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-24 00:45:10,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-24 00:45:10,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-24 00:45:10,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2024-11-24 00:45:10,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2024-11-24 00:45:10,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#8 [2024-11-24 00:45:10,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#9 [2024-11-24 00:45:10,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#10 [2024-11-24 00:45:10,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-24 00:45:10,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-24 00:45:10,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-24 00:45:10,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-24 00:45:10,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-24 00:45:10,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-24 00:45:10,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-24 00:45:10,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-24 00:45:10,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2024-11-24 00:45:10,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2024-11-24 00:45:10,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#10 [2024-11-24 00:45:10,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-24 00:45:10,216 INFO L130 BoogieDeclarations]: Found specification of procedure wdt_write [2024-11-24 00:45:10,217 INFO L138 BoogieDeclarations]: Found implementation of procedure wdt_write [2024-11-24 00:45:10,217 INFO L130 BoogieDeclarations]: Found specification of procedure wdt_update_timeout [2024-11-24 00:45:10,217 INFO L138 BoogieDeclarations]: Found implementation of procedure wdt_update_timeout [2024-11-24 00:45:10,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-24 00:45:10,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-24 00:45:10,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-24 00:45:10,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-24 00:45:10,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-24 00:45:10,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-11-24 00:45:10,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2024-11-24 00:45:10,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2024-11-24 00:45:10,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#8 [2024-11-24 00:45:10,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#9 [2024-11-24 00:45:10,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#10 [2024-11-24 00:45:10,218 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2024-11-24 00:45:10,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2024-11-24 00:45:10,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-24 00:45:10,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-24 00:45:10,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-24 00:45:10,219 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-24 00:45:10,219 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-24 00:45:10,220 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-24 00:45:10,220 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-24 00:45:10,220 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-24 00:45:10,220 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-24 00:45:10,220 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-24 00:45:10,220 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-11-24 00:45:10,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2024-11-24 00:45:10,220 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2024-11-24 00:45:10,220 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-24 00:45:10,220 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-24 00:45:10,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-24 00:45:10,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-24 00:45:10,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-24 00:45:10,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-24 00:45:10,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-24 00:45:10,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-24 00:45:10,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-11-24 00:45:10,222 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2024-11-24 00:45:10,222 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#10 [2024-11-24 00:45:10,223 INFO L130 BoogieDeclarations]: Found specification of procedure wdt_round_time [2024-11-24 00:45:10,223 INFO L138 BoogieDeclarations]: Found implementation of procedure wdt_round_time [2024-11-24 00:45:10,223 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_reboot_notifier [2024-11-24 00:45:10,223 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_reboot_notifier [2024-11-24 00:45:10,223 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2024-11-24 00:45:10,223 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2024-11-24 00:45:10,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-24 00:45:10,223 INFO L130 BoogieDeclarations]: Found specification of procedure superio_exit [2024-11-24 00:45:10,223 INFO L138 BoogieDeclarations]: Found implementation of procedure superio_exit [2024-11-24 00:45:10,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-24 00:45:10,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-24 00:45:10,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-24 00:45:10,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-24 00:45:10,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-24 00:45:10,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-24 00:45:10,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-24 00:45:10,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2024-11-24 00:45:10,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2024-11-24 00:45:10,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#9 [2024-11-24 00:45:10,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#10 [2024-11-24 00:45:10,225 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2024-11-24 00:45:10,225 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2024-11-24 00:45:10,226 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2024-11-24 00:45:10,226 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2024-11-24 00:45:10,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-24 00:45:10,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-24 00:45:10,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-24 00:45:10,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-24 00:45:10,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-24 00:45:10,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-24 00:45:10,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-24 00:45:10,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-24 00:45:10,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-24 00:45:10,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-11-24 00:45:10,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-11-24 00:45:10,227 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2024-11-24 00:45:10,227 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2024-11-24 00:45:10,227 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2024-11-24 00:45:10,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2024-11-24 00:45:10,227 INFO L130 BoogieDeclarations]: Found specification of procedure wdt_start [2024-11-24 00:45:10,227 INFO L138 BoogieDeclarations]: Found implementation of procedure wdt_start [2024-11-24 00:45:10,227 INFO L130 BoogieDeclarations]: Found specification of procedure superio_select [2024-11-24 00:45:10,227 INFO L138 BoogieDeclarations]: Found implementation of procedure superio_select [2024-11-24 00:45:10,227 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2024-11-24 00:45:10,228 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2024-11-24 00:45:10,228 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2024-11-24 00:45:10,228 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2024-11-24 00:45:10,228 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2024-11-24 00:45:10,228 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2024-11-24 00:45:10,229 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2024-11-24 00:45:10,229 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2024-11-24 00:45:10,229 INFO L130 BoogieDeclarations]: Found specification of procedure superio_enter [2024-11-24 00:45:10,229 INFO L138 BoogieDeclarations]: Found implementation of procedure superio_enter [2024-11-24 00:45:10,229 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2024-11-24 00:45:10,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2024-11-24 00:45:10,231 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-24 00:45:10,232 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-24 00:45:10,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 00:45:10,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-24 00:45:10,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-24 00:45:10,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-24 00:45:10,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-24 00:45:10,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-24 00:45:10,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-24 00:45:10,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-24 00:45:10,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-24 00:45:10,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-24 00:45:10,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-24 00:45:10,232 INFO L130 BoogieDeclarations]: Found specification of procedure wdt_keepalive [2024-11-24 00:45:10,232 INFO L138 BoogieDeclarations]: Found implementation of procedure wdt_keepalive [2024-11-24 00:45:10,232 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2024-11-24 00:45:10,232 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2024-11-24 00:45:10,232 INFO L130 BoogieDeclarations]: Found specification of procedure superio_inb [2024-11-24 00:45:10,232 INFO L138 BoogieDeclarations]: Found implementation of procedure superio_inb [2024-11-24 00:45:10,232 INFO L130 BoogieDeclarations]: Found specification of procedure superio_outb [2024-11-24 00:45:10,232 INFO L138 BoogieDeclarations]: Found implementation of procedure superio_outb [2024-11-24 00:45:10,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-24 00:45:10,232 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2024-11-24 00:45:10,233 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2024-11-24 00:45:10,233 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2024-11-24 00:45:10,233 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2024-11-24 00:45:10,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:45:10,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:45:10,233 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2024-11-24 00:45:10,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2024-11-24 00:45:10,700 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:45:10,703 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:45:10,881 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2024-11-24 00:45:16,516 INFO L? ?]: Removed 473 outVars from TransFormulas that were not future-live. [2024-11-24 00:45:16,516 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:45:16,553 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:45:16,553 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-24 00:45:16,554 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:45:16 BoogieIcfgContainer [2024-11-24 00:45:16,554 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:45:16,559 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 00:45:16,560 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 00:45:16,566 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 00:45:16,566 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:45:08" (1/3) ... [2024-11-24 00:45:16,567 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e9c451a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:45:16, skipping insertion in model container [2024-11-24 00:45:16,567 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:45:09" (2/3) ... [2024-11-24 00:45:16,567 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e9c451a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:45:16, skipping insertion in model container [2024-11-24 00:45:16,567 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:45:16" (3/3) ... [2024-11-24 00:45:16,568 INFO L128 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--watchdog--it87_wdt.ko-entry_point.cil.out.i [2024-11-24 00:45:16,586 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 00:45:16,589 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--watchdog--it87_wdt.ko-entry_point.cil.out.i that has 32 procedures, 615 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-24 00:45:16,679 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:45:16,694 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;@74c31f6b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:45:16,695 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 00:45:16,701 INFO L276 IsEmpty]: Start isEmpty. Operand has 614 states, 391 states have (on average 1.4015345268542199) internal successors, (548), 423 states have internal predecessors, (548), 191 states have call successors, (191), 31 states have call predecessors, (191), 30 states have return successors, (187), 182 states have call predecessors, (187), 187 states have call successors, (187) [2024-11-24 00:45:16,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-24 00:45:16,717 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:45:16,718 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:45:16,719 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:45:16,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:45:16,724 INFO L85 PathProgramCache]: Analyzing trace with hash -837221207, now seen corresponding path program 1 times [2024-11-24 00:45:16,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:45:16,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063240180] [2024-11-24 00:45:16,732 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:45:16,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:45:17,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:45:17,710 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-24 00:45:17,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:45:17,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063240180] [2024-11-24 00:45:17,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063240180] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:45:17,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923472513] [2024-11-24 00:45:17,715 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:45:17,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:45:17,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:45:17,723 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:45:17,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 00:45:18,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:45:18,657 INFO L256 TraceCheckSpWp]: Trace formula consists of 1357 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-24 00:45:18,668 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:45:18,705 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-11-24 00:45:18,706 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:45:18,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923472513] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:45:18,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:45:18,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-24 00:45:18,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573384215] [2024-11-24 00:45:18,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:45:18,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 00:45:18,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:45:18,736 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 00:45:18,736 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 00:45:18,739 INFO L87 Difference]: Start difference. First operand has 614 states, 391 states have (on average 1.4015345268542199) internal successors, (548), 423 states have internal predecessors, (548), 191 states have call successors, (191), 31 states have call predecessors, (191), 30 states have return successors, (187), 182 states have call predecessors, (187), 187 states have call successors, (187) Second operand has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 00:45:18,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:45:18,870 INFO L93 Difference]: Finished difference Result 1223 states and 1880 transitions. [2024-11-24 00:45:18,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 00:45:18,873 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 137 [2024-11-24 00:45:18,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:45:18,898 INFO L225 Difference]: With dead ends: 1223 [2024-11-24 00:45:18,898 INFO L226 Difference]: Without dead ends: 603 [2024-11-24 00:45:18,911 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 00:45:18,914 INFO L435 NwaCegarLoop]: 917 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 917 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:45:18,917 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:45:18,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2024-11-24 00:45:19,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 603. [2024-11-24 00:45:19,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 386 states have (on average 1.3756476683937824) internal successors, (531), 412 states have internal predecessors, (531), 187 states have call successors, (187), 30 states have call predecessors, (187), 29 states have return successors, (186), 181 states have call predecessors, (186), 186 states have call successors, (186) [2024-11-24 00:45:19,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 904 transitions. [2024-11-24 00:45:19,078 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 904 transitions. Word has length 137 [2024-11-24 00:45:19,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:45:19,079 INFO L471 AbstractCegarLoop]: Abstraction has 603 states and 904 transitions. [2024-11-24 00:45:19,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 00:45:19,079 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 904 transitions. [2024-11-24 00:45:19,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-24 00:45:19,090 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:45:19,090 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:45:19,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-24 00:45:19,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:45:19,296 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:45:19,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:45:19,297 INFO L85 PathProgramCache]: Analyzing trace with hash 116795809, now seen corresponding path program 1 times [2024-11-24 00:45:19,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:45:19,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433258571] [2024-11-24 00:45:19,297 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:45:19,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:45:19,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:45:20,018 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2024-11-24 00:45:20,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:45:20,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433258571] [2024-11-24 00:45:20,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433258571] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:45:20,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:45:20,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:45:20,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946858566] [2024-11-24 00:45:20,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:45:20,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:45:20,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:45:20,020 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:45:20,020 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:45:20,023 INFO L87 Difference]: Start difference. First operand 603 states and 904 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-24 00:45:20,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:45:20,139 INFO L93 Difference]: Finished difference Result 614 states and 914 transitions. [2024-11-24 00:45:20,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:45:20,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 137 [2024-11-24 00:45:20,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:45:20,149 INFO L225 Difference]: With dead ends: 614 [2024-11-24 00:45:20,149 INFO L226 Difference]: Without dead ends: 609 [2024-11-24 00:45:20,150 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:45:20,150 INFO L435 NwaCegarLoop]: 907 mSDtfsCounter, 899 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 899 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:45:20,152 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [899 Valid, 911 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:45:20,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2024-11-24 00:45:20,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 604. [2024-11-24 00:45:20,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 387 states have (on average 1.3746770025839794) internal successors, (532), 413 states have internal predecessors, (532), 187 states have call successors, (187), 30 states have call predecessors, (187), 29 states have return successors, (186), 181 states have call predecessors, (186), 186 states have call successors, (186) [2024-11-24 00:45:20,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 905 transitions. [2024-11-24 00:45:20,223 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 905 transitions. Word has length 137 [2024-11-24 00:45:20,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:45:20,225 INFO L471 AbstractCegarLoop]: Abstraction has 604 states and 905 transitions. [2024-11-24 00:45:20,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-24 00:45:20,225 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 905 transitions. [2024-11-24 00:45:20,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-24 00:45:20,231 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:45:20,232 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:45:20,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 00:45:20,232 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:45:20,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:45:20,232 INFO L85 PathProgramCache]: Analyzing trace with hash 174054111, now seen corresponding path program 1 times [2024-11-24 00:45:20,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:45:20,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755969948] [2024-11-24 00:45:20,233 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:45:20,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:45:20,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:45:20,803 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2024-11-24 00:45:20,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:45:20,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755969948] [2024-11-24 00:45:20,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755969948] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:45:20,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:45:20,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:45:20,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285363728] [2024-11-24 00:45:20,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:45:20,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:45:20,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:45:20,807 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:45:20,807 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:45:20,808 INFO L87 Difference]: Start difference. First operand 604 states and 905 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-24 00:45:20,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:45:20,929 INFO L93 Difference]: Finished difference Result 1180 states and 1772 transitions. [2024-11-24 00:45:20,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:45:20,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 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 137 [2024-11-24 00:45:20,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:45:20,941 INFO L225 Difference]: With dead ends: 1180 [2024-11-24 00:45:20,942 INFO L226 Difference]: Without dead ends: 1141 [2024-11-24 00:45:20,943 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:45:20,946 INFO L435 NwaCegarLoop]: 987 mSDtfsCounter, 863 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 1851 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:45:20,946 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [863 Valid, 1851 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:45:20,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1141 states. [2024-11-24 00:45:21,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1141 to 1140. [2024-11-24 00:45:21,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1140 states, 737 states have (on average 1.3812754409769334) internal successors, (1018), 783 states have internal predecessors, (1018), 345 states have call successors, (345), 58 states have call predecessors, (345), 57 states have return successors, (344), 336 states have call predecessors, (344), 344 states have call successors, (344) [2024-11-24 00:45:21,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1140 states to 1140 states and 1707 transitions. [2024-11-24 00:45:21,087 INFO L78 Accepts]: Start accepts. Automaton has 1140 states and 1707 transitions. Word has length 137 [2024-11-24 00:45:21,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:45:21,088 INFO L471 AbstractCegarLoop]: Abstraction has 1140 states and 1707 transitions. [2024-11-24 00:45:21,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-24 00:45:21,090 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states and 1707 transitions. [2024-11-24 00:45:21,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-24 00:45:21,099 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:45:21,100 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2024-11-24 00:45:21,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 00:45:21,100 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:45:21,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:45:21,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1746415035, now seen corresponding path program 1 times [2024-11-24 00:45:21,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:45:21,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606126943] [2024-11-24 00:45:21,102 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:45:21,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:45:21,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:45:21,645 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2024-11-24 00:45:21,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:45:21,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606126943] [2024-11-24 00:45:21,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606126943] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:45:21,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:45:21,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:45:21,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32748537] [2024-11-24 00:45:21,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:45:21,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:45:21,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:45:21,648 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:45:21,648 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:45:21,649 INFO L87 Difference]: Start difference. First operand 1140 states and 1707 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-24 00:45:21,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:45:21,882 INFO L93 Difference]: Finished difference Result 2753 states and 4102 transitions. [2024-11-24 00:45:21,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:45:21,883 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 188 [2024-11-24 00:45:21,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:45:21,903 INFO L225 Difference]: With dead ends: 2753 [2024-11-24 00:45:21,903 INFO L226 Difference]: Without dead ends: 1641 [2024-11-24 00:45:21,909 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:45:21,911 INFO L435 NwaCegarLoop]: 909 mSDtfsCounter, 439 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 1734 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:45:21,912 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [439 Valid, 1734 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:45:21,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1641 states. [2024-11-24 00:45:22,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1641 to 1632. [2024-11-24 00:45:22,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1632 states, 1031 states have (on average 1.3695441319107662) internal successors, (1412), 1097 states have internal predecessors, (1412), 506 states have call successors, (506), 95 states have call predecessors, (506), 94 states have return successors, (505), 493 states have call predecessors, (505), 505 states have call successors, (505) [2024-11-24 00:45:22,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1632 states to 1632 states and 2423 transitions. [2024-11-24 00:45:22,100 INFO L78 Accepts]: Start accepts. Automaton has 1632 states and 2423 transitions. Word has length 188 [2024-11-24 00:45:22,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:45:22,101 INFO L471 AbstractCegarLoop]: Abstraction has 1632 states and 2423 transitions. [2024-11-24 00:45:22,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-24 00:45:22,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1632 states and 2423 transitions. [2024-11-24 00:45:22,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2024-11-24 00:45:22,113 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:45:22,113 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:45:22,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 00:45:22,114 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:45:22,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:45:22,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1013489833, now seen corresponding path program 1 times [2024-11-24 00:45:22,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:45:22,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751224042] [2024-11-24 00:45:22,118 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:45:22,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:45:22,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:45:23,410 INFO L134 CoverageAnalysis]: Checked inductivity of 629 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 616 trivial. 0 not checked. [2024-11-24 00:45:23,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:45:23,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751224042] [2024-11-24 00:45:23,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751224042] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:45:23,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:45:23,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:45:23,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567488300] [2024-11-24 00:45:23,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:45:23,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:45:23,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:45:23,412 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:45:23,412 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:45:23,413 INFO L87 Difference]: Start difference. First operand 1632 states and 2423 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 4 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (44), 4 states have call predecessors, (44), 4 states have call successors, (44) [2024-11-24 00:45:27,435 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 [] [2024-11-24 00:45:28,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:45:28,758 INFO L93 Difference]: Finished difference Result 3538 states and 5330 transitions. [2024-11-24 00:45:28,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:45:28,760 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 4 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (44), 4 states have call predecessors, (44), 4 states have call successors, (44) Word has length 390 [2024-11-24 00:45:28,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:45:28,777 INFO L225 Difference]: With dead ends: 3538 [2024-11-24 00:45:28,777 INFO L226 Difference]: Without dead ends: 1944 [2024-11-24 00:45:28,784 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:45:28,786 INFO L435 NwaCegarLoop]: 978 mSDtfsCounter, 911 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 956 SdHoareTripleChecker+Valid, 1463 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:45:28,786 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [956 Valid, 1463 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 468 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2024-11-24 00:45:28,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1944 states. [2024-11-24 00:45:28,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1944 to 1912. [2024-11-24 00:45:28,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1912 states, 1175 states have (on average 1.3702127659574468) internal successors, (1610), 1265 states have internal predecessors, (1610), 642 states have call successors, (642), 95 states have call predecessors, (642), 94 states have return successors, (641), 625 states have call predecessors, (641), 641 states have call successors, (641) [2024-11-24 00:45:28,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1912 states to 1912 states and 2893 transitions. [2024-11-24 00:45:28,974 INFO L78 Accepts]: Start accepts. Automaton has 1912 states and 2893 transitions. Word has length 390 [2024-11-24 00:45:28,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:45:28,975 INFO L471 AbstractCegarLoop]: Abstraction has 1912 states and 2893 transitions. [2024-11-24 00:45:28,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 4 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (44), 4 states have call predecessors, (44), 4 states have call successors, (44) [2024-11-24 00:45:28,976 INFO L276 IsEmpty]: Start isEmpty. Operand 1912 states and 2893 transitions. [2024-11-24 00:45:28,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2024-11-24 00:45:28,987 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:45:28,987 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:45:28,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 00:45:28,988 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:45:28,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:45:28,989 INFO L85 PathProgramCache]: Analyzing trace with hash 599239605, now seen corresponding path program 1 times [2024-11-24 00:45:28,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:45:28,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734545560] [2024-11-24 00:45:28,989 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:45:28,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:45:29,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:45:29,757 INFO L134 CoverageAnalysis]: Checked inductivity of 629 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 616 trivial. 0 not checked. [2024-11-24 00:45:29,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:45:29,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734545560] [2024-11-24 00:45:29,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734545560] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:45:29,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:45:29,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:45:29,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902411648] [2024-11-24 00:45:29,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:45:29,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:45:29,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:45:29,759 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:45:29,759 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:45:29,759 INFO L87 Difference]: Start difference. First operand 1912 states and 2893 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2024-11-24 00:45:29,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:45:29,958 INFO L93 Difference]: Finished difference Result 3822 states and 5794 transitions. [2024-11-24 00:45:29,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:45:29,958 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) Word has length 403 [2024-11-24 00:45:29,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:45:29,976 INFO L225 Difference]: With dead ends: 3822 [2024-11-24 00:45:29,977 INFO L226 Difference]: Without dead ends: 1948 [2024-11-24 00:45:29,985 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:45:29,986 INFO L435 NwaCegarLoop]: 891 mSDtfsCounter, 3 mSDsluCounter, 871 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1762 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:45:29,986 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1762 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:45:29,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1948 states. [2024-11-24 00:45:30,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1948 to 1948. [2024-11-24 00:45:30,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1948 states, 1211 states have (on average 1.3559042113955408) internal successors, (1642), 1301 states have internal predecessors, (1642), 642 states have call successors, (642), 95 states have call predecessors, (642), 94 states have return successors, (641), 625 states have call predecessors, (641), 641 states have call successors, (641) [2024-11-24 00:45:30,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1948 states to 1948 states and 2925 transitions. [2024-11-24 00:45:30,172 INFO L78 Accepts]: Start accepts. Automaton has 1948 states and 2925 transitions. Word has length 403 [2024-11-24 00:45:30,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:45:30,174 INFO L471 AbstractCegarLoop]: Abstraction has 1948 states and 2925 transitions. [2024-11-24 00:45:30,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2024-11-24 00:45:30,174 INFO L276 IsEmpty]: Start isEmpty. Operand 1948 states and 2925 transitions. [2024-11-24 00:45:30,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2024-11-24 00:45:30,187 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:45:30,187 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:45:30,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 00:45:30,187 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:45:30,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:45:30,188 INFO L85 PathProgramCache]: Analyzing trace with hash 542374259, now seen corresponding path program 1 times [2024-11-24 00:45:30,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:45:30,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010230163] [2024-11-24 00:45:30,188 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:45:30,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:45:30,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:45:30,860 INFO L134 CoverageAnalysis]: Checked inductivity of 629 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 616 trivial. 0 not checked. [2024-11-24 00:45:30,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:45:30,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010230163] [2024-11-24 00:45:30,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010230163] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:45:30,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:45:30,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:45:30,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014699031] [2024-11-24 00:45:30,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:45:30,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:45:30,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:45:30,864 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:45:30,864 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:45:30,864 INFO L87 Difference]: Start difference. First operand 1948 states and 2925 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 3 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2024-11-24 00:45:30,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:45:30,988 INFO L93 Difference]: Finished difference Result 3858 states and 5802 transitions. [2024-11-24 00:45:30,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:45:30,988 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 3 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) Word has length 403 [2024-11-24 00:45:30,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:45:31,037 INFO L225 Difference]: With dead ends: 3858 [2024-11-24 00:45:31,038 INFO L226 Difference]: Without dead ends: 1948 [2024-11-24 00:45:31,044 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:45:31,046 INFO L435 NwaCegarLoop]: 900 mSDtfsCounter, 841 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:45:31,046 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 900 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:45:31,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1948 states. [2024-11-24 00:45:31,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1948 to 1948. [2024-11-24 00:45:31,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1948 states, 1211 states have (on average 1.3492981007431875) internal successors, (1634), 1301 states have internal predecessors, (1634), 642 states have call successors, (642), 95 states have call predecessors, (642), 94 states have return successors, (641), 625 states have call predecessors, (641), 641 states have call successors, (641) [2024-11-24 00:45:31,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1948 states to 1948 states and 2917 transitions. [2024-11-24 00:45:31,194 INFO L78 Accepts]: Start accepts. Automaton has 1948 states and 2917 transitions. Word has length 403 [2024-11-24 00:45:31,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:45:31,196 INFO L471 AbstractCegarLoop]: Abstraction has 1948 states and 2917 transitions. [2024-11-24 00:45:31,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 3 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2024-11-24 00:45:31,196 INFO L276 IsEmpty]: Start isEmpty. Operand 1948 states and 2917 transitions. [2024-11-24 00:45:31,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2024-11-24 00:45:31,210 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:45:31,210 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:45:31,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 00:45:31,212 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:45:31,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:45:31,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1343053909, now seen corresponding path program 1 times [2024-11-24 00:45:31,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:45:31,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754723548] [2024-11-24 00:45:31,214 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:45:31,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:45:31,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:45:32,112 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2024-11-24 00:45:32,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:45:32,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754723548] [2024-11-24 00:45:32,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754723548] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:45:32,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293989105] [2024-11-24 00:45:32,113 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:45:32,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:45:32,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:45:32,115 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:45:32,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 00:45:33,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:45:33,168 INFO L256 TraceCheckSpWp]: Trace formula consists of 2410 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-24 00:45:33,182 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:45:33,946 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2024-11-24 00:45:33,946 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:45:33,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293989105] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:45:33,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:45:33,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-24 00:45:33,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401013531] [2024-11-24 00:45:33,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:45:33,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:45:33,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:45:33,948 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:45:33,948 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:45:33,948 INFO L87 Difference]: Start difference. First operand 1948 states and 2917 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 2 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2024-11-24 00:45:34,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:45:34,079 INFO L93 Difference]: Finished difference Result 3858 states and 5786 transitions. [2024-11-24 00:45:34,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:45:34,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 2 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) Word has length 411 [2024-11-24 00:45:34,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:45:34,094 INFO L225 Difference]: With dead ends: 3858 [2024-11-24 00:45:34,094 INFO L226 Difference]: Without dead ends: 1948 [2024-11-24 00:45:34,102 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 411 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:45:34,103 INFO L435 NwaCegarLoop]: 899 mSDtfsCounter, 702 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:45:34,103 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 899 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:45:34,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1948 states. [2024-11-24 00:45:34,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1948 to 1948. [2024-11-24 00:45:34,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1948 states, 1211 states have (on average 1.347646573080099) internal successors, (1632), 1301 states have internal predecessors, (1632), 642 states have call successors, (642), 95 states have call predecessors, (642), 94 states have return successors, (641), 625 states have call predecessors, (641), 641 states have call successors, (641) [2024-11-24 00:45:34,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1948 states to 1948 states and 2915 transitions. [2024-11-24 00:45:34,247 INFO L78 Accepts]: Start accepts. Automaton has 1948 states and 2915 transitions. Word has length 411 [2024-11-24 00:45:34,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:45:34,248 INFO L471 AbstractCegarLoop]: Abstraction has 1948 states and 2915 transitions. [2024-11-24 00:45:34,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 2 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2024-11-24 00:45:34,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1948 states and 2915 transitions. [2024-11-24 00:45:34,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2024-11-24 00:45:34,260 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:45:34,260 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:45:34,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-24 00:45:34,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-24 00:45:34,461 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:45:34,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:45:34,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1087329767, now seen corresponding path program 1 times [2024-11-24 00:45:34,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:45:34,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931465618] [2024-11-24 00:45:34,462 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:45:34,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:45:34,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:45:35,223 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 624 trivial. 0 not checked. [2024-11-24 00:45:35,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:45:35,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931465618] [2024-11-24 00:45:35,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931465618] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:45:35,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:45:35,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:45:35,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80404845] [2024-11-24 00:45:35,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:45:35,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:45:35,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:45:35,225 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:45:35,225 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:45:35,225 INFO L87 Difference]: Start difference. First operand 1948 states and 2915 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2024-11-24 00:45:39,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 00:45:39,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:45:39,503 INFO L93 Difference]: Finished difference Result 4774 states and 7096 transitions. [2024-11-24 00:45:39,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:45:39,503 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) Word has length 417 [2024-11-24 00:45:39,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:45:39,524 INFO L225 Difference]: With dead ends: 4774 [2024-11-24 00:45:39,524 INFO L226 Difference]: Without dead ends: 2782 [2024-11-24 00:45:39,532 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:45:39,534 INFO L435 NwaCegarLoop]: 1062 mSDtfsCounter, 567 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 1894 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:45:39,535 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [567 Valid, 1894 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2024-11-24 00:45:39,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2782 states. [2024-11-24 00:45:39,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2782 to 2782. [2024-11-24 00:45:39,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2782 states, 1784 states have (on average 1.3559417040358743) internal successors, (2419), 1899 states have internal predecessors, (2419), 847 states have call successors, (847), 151 states have call predecessors, (847), 150 states have return successors, (846), 826 states have call predecessors, (846), 846 states have call successors, (846) [2024-11-24 00:45:39,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2782 states to 2782 states and 4112 transitions. [2024-11-24 00:45:39,735 INFO L78 Accepts]: Start accepts. Automaton has 2782 states and 4112 transitions. Word has length 417 [2024-11-24 00:45:39,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:45:39,739 INFO L471 AbstractCegarLoop]: Abstraction has 2782 states and 4112 transitions. [2024-11-24 00:45:39,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2024-11-24 00:45:39,740 INFO L276 IsEmpty]: Start isEmpty. Operand 2782 states and 4112 transitions. [2024-11-24 00:45:39,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2024-11-24 00:45:39,754 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:45:39,755 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:45:39,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-24 00:45:39,755 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:45:39,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:45:39,756 INFO L85 PathProgramCache]: Analyzing trace with hash 501053545, now seen corresponding path program 1 times [2024-11-24 00:45:39,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:45:39,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751419010] [2024-11-24 00:45:39,756 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:45:39,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:45:40,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:45:40,361 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 625 trivial. 0 not checked. [2024-11-24 00:45:40,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:45:40,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751419010] [2024-11-24 00:45:40,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751419010] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:45:40,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:45:40,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:45:40,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730013140] [2024-11-24 00:45:40,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:45:40,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:45:40,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:45:40,364 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:45:40,364 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:45:40,365 INFO L87 Difference]: Start difference. First operand 2782 states and 4112 transitions. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 2 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2024-11-24 00:45:40,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:45:40,587 INFO L93 Difference]: Finished difference Result 5535 states and 8186 transitions. [2024-11-24 00:45:40,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:45:40,588 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 2 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) Word has length 417 [2024-11-24 00:45:40,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:45:40,614 INFO L225 Difference]: With dead ends: 5535 [2024-11-24 00:45:40,614 INFO L226 Difference]: Without dead ends: 2791 [2024-11-24 00:45:40,626 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:45:40,627 INFO L435 NwaCegarLoop]: 899 mSDtfsCounter, 895 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 1793 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:45:40,627 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [895 Valid, 1793 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:45:40,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2791 states. [2024-11-24 00:45:40,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2791 to 2786. [2024-11-24 00:45:40,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2786 states, 1788 states have (on average 1.3551454138702461) internal successors, (2423), 1903 states have internal predecessors, (2423), 847 states have call successors, (847), 151 states have call predecessors, (847), 150 states have return successors, (846), 826 states have call predecessors, (846), 846 states have call successors, (846) [2024-11-24 00:45:40,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2786 states to 2786 states and 4116 transitions. [2024-11-24 00:45:40,908 INFO L78 Accepts]: Start accepts. Automaton has 2786 states and 4116 transitions. Word has length 417 [2024-11-24 00:45:40,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:45:40,908 INFO L471 AbstractCegarLoop]: Abstraction has 2786 states and 4116 transitions. [2024-11-24 00:45:40,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 2 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2024-11-24 00:45:40,910 INFO L276 IsEmpty]: Start isEmpty. Operand 2786 states and 4116 transitions. [2024-11-24 00:45:40,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2024-11-24 00:45:40,920 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:45:40,920 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:45:40,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-24 00:45:40,920 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:45:40,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:45:40,921 INFO L85 PathProgramCache]: Analyzing trace with hash 514986807, now seen corresponding path program 1 times [2024-11-24 00:45:40,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:45:40,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164626316] [2024-11-24 00:45:40,921 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:45:40,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:45:41,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:45:41,398 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2024-11-24 00:45:41,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:45:41,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164626316] [2024-11-24 00:45:41,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164626316] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:45:41,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:45:41,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:45:41,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950944074] [2024-11-24 00:45:41,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:45:41,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:45:41,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:45:41,400 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:45:41,400 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:45:41,400 INFO L87 Difference]: Start difference. First operand 2786 states and 4116 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 2 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2024-11-24 00:45:45,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 00:45:45,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:45:45,535 INFO L93 Difference]: Finished difference Result 4100 states and 6018 transitions. [2024-11-24 00:45:45,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:45:45,536 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 2 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 427 [2024-11-24 00:45:45,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:45:45,549 INFO L225 Difference]: With dead ends: 4100 [2024-11-24 00:45:45,549 INFO L226 Difference]: Without dead ends: 1297 [2024-11-24 00:45:45,559 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:45:45,560 INFO L435 NwaCegarLoop]: 899 mSDtfsCounter, 0 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1793 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:45:45,560 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1793 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2024-11-24 00:45:45,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1297 states. [2024-11-24 00:45:45,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1297 to 1293. [2024-11-24 00:45:45,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1293 states, 832 states have (on average 1.3293269230769231) internal successors, (1106), 882 states have internal predecessors, (1106), 372 states have call successors, (372), 89 states have call predecessors, (372), 88 states have return successors, (371), 361 states have call predecessors, (371), 371 states have call successors, (371) [2024-11-24 00:45:45,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1293 states to 1293 states and 1849 transitions. [2024-11-24 00:45:45,656 INFO L78 Accepts]: Start accepts. Automaton has 1293 states and 1849 transitions. Word has length 427 [2024-11-24 00:45:45,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:45:45,657 INFO L471 AbstractCegarLoop]: Abstraction has 1293 states and 1849 transitions. [2024-11-24 00:45:45,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 2 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2024-11-24 00:45:45,657 INFO L276 IsEmpty]: Start isEmpty. Operand 1293 states and 1849 transitions. [2024-11-24 00:45:45,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2024-11-24 00:45:45,665 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:45:45,666 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:45:45,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-24 00:45:45,666 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:45:45,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:45:45,667 INFO L85 PathProgramCache]: Analyzing trace with hash -750527298, now seen corresponding path program 1 times [2024-11-24 00:45:45,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:45:45,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900386373] [2024-11-24 00:45:45,668 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:45:45,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:45:45,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:45:46,371 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 640 trivial. 0 not checked. [2024-11-24 00:45:46,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:45:46,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900386373] [2024-11-24 00:45:46,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900386373] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:45:46,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:45:46,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:45:46,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151051812] [2024-11-24 00:45:46,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:45:46,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:45:46,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:45:46,374 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:45:46,374 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:45:46,375 INFO L87 Difference]: Start difference. First operand 1293 states and 1849 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (49), 3 states have call predecessors, (49), 2 states have call successors, (49) [2024-11-24 00:45:46,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:45:46,482 INFO L93 Difference]: Finished difference Result 2196 states and 3159 transitions. [2024-11-24 00:45:46,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:45:46,483 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (49), 3 states have call predecessors, (49), 2 states have call successors, (49) Word has length 434 [2024-11-24 00:45:46,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:45:46,494 INFO L225 Difference]: With dead ends: 2196 [2024-11-24 00:45:46,494 INFO L226 Difference]: Without dead ends: 1301 [2024-11-24 00:45:46,498 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:45:46,498 INFO L435 NwaCegarLoop]: 864 mSDtfsCounter, 1 mSDsluCounter, 2582 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 3446 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:45:46,499 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 3446 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:45:46,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1301 states. [2024-11-24 00:45:46,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1301 to 1301. [2024-11-24 00:45:46,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1301 states, 838 states have (on average 1.3269689737470167) internal successors, (1112), 888 states have internal predecessors, (1112), 372 states have call successors, (372), 89 states have call predecessors, (372), 90 states have return successors, (375), 363 states have call predecessors, (375), 371 states have call successors, (375) [2024-11-24 00:45:46,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1301 states to 1301 states and 1859 transitions. [2024-11-24 00:45:46,591 INFO L78 Accepts]: Start accepts. Automaton has 1301 states and 1859 transitions. Word has length 434 [2024-11-24 00:45:46,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:45:46,593 INFO L471 AbstractCegarLoop]: Abstraction has 1301 states and 1859 transitions. [2024-11-24 00:45:46,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (49), 3 states have call predecessors, (49), 2 states have call successors, (49) [2024-11-24 00:45:46,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1301 states and 1859 transitions. [2024-11-24 00:45:46,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2024-11-24 00:45:46,600 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:45:46,601 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:45:46,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-24 00:45:46,601 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:45:46,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:45:46,602 INFO L85 PathProgramCache]: Analyzing trace with hash -778948170, now seen corresponding path program 1 times [2024-11-24 00:45:46,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:45:46,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291018960] [2024-11-24 00:45:46,602 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:45:46,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:45:46,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:45:47,443 INFO L134 CoverageAnalysis]: Checked inductivity of 657 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 649 trivial. 0 not checked. [2024-11-24 00:45:47,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:45:47,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291018960] [2024-11-24 00:45:47,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291018960] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:45:47,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:45:47,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:45:47,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151216746] [2024-11-24 00:45:47,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:45:47,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:45:47,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:45:47,445 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:45:47,445 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:45:47,446 INFO L87 Difference]: Start difference. First operand 1301 states and 1859 transitions. Second operand has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 6 states have internal predecessors, (162), 3 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) [2024-11-24 00:45:51,459 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 00:45:51,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:45:51,840 INFO L93 Difference]: Finished difference Result 3111 states and 4479 transitions. [2024-11-24 00:45:51,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 00:45:51,841 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 6 states have internal predecessors, (162), 3 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) Word has length 445 [2024-11-24 00:45:51,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:45:51,857 INFO L225 Difference]: With dead ends: 3111 [2024-11-24 00:45:51,858 INFO L226 Difference]: Without dead ends: 2208 [2024-11-24 00:45:51,862 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:45:51,863 INFO L435 NwaCegarLoop]: 1397 mSDtfsCounter, 605 mSDsluCounter, 6429 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 607 SdHoareTripleChecker+Valid, 7826 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:45:51,863 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [607 Valid, 7826 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 71 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2024-11-24 00:45:51,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2208 states. [2024-11-24 00:45:52,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2208 to 1305. [2024-11-24 00:45:52,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1305 states, 842 states have (on average 1.32541567695962) internal successors, (1116), 892 states have internal predecessors, (1116), 372 states have call successors, (372), 89 states have call predecessors, (372), 90 states have return successors, (375), 363 states have call predecessors, (375), 371 states have call successors, (375) [2024-11-24 00:45:52,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1305 states to 1305 states and 1863 transitions. [2024-11-24 00:45:52,035 INFO L78 Accepts]: Start accepts. Automaton has 1305 states and 1863 transitions. Word has length 445 [2024-11-24 00:45:52,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:45:52,037 INFO L471 AbstractCegarLoop]: Abstraction has 1305 states and 1863 transitions. [2024-11-24 00:45:52,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 6 states have internal predecessors, (162), 3 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (52), 4 states have call predecessors, (52), 3 states have call successors, (52) [2024-11-24 00:45:52,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1305 states and 1863 transitions. [2024-11-24 00:45:52,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2024-11-24 00:45:52,045 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:45:52,046 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:45:52,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-24 00:45:52,046 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:45:52,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:45:52,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1149324532, now seen corresponding path program 1 times [2024-11-24 00:45:52,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:45:52,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168151459] [2024-11-24 00:45:52,047 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:45:52,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:45:52,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:45:52,722 INFO L134 CoverageAnalysis]: Checked inductivity of 657 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 643 trivial. 0 not checked. [2024-11-24 00:45:52,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:45:52,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168151459] [2024-11-24 00:45:52,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168151459] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:45:52,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472310054] [2024-11-24 00:45:52,722 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:45:52,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:45:52,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:45:52,725 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:45:52,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 00:45:53,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:45:53,902 INFO L256 TraceCheckSpWp]: Trace formula consists of 2524 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 00:45:53,920 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:45:53,970 INFO L134 CoverageAnalysis]: Checked inductivity of 657 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 504 trivial. 0 not checked. [2024-11-24 00:45:53,971 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:45:53,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472310054] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:45:53,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:45:53,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2024-11-24 00:45:53,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678114171] [2024-11-24 00:45:53,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:45:53,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:45:53,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:45:53,974 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:45:53,974 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:45:53,974 INFO L87 Difference]: Start difference. First operand 1305 states and 1863 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (56), 2 states have call predecessors, (56), 3 states have return successors, (55), 3 states have call predecessors, (55), 2 states have call successors, (55) [2024-11-24 00:45:54,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:45:54,112 INFO L93 Difference]: Finished difference Result 2541 states and 3639 transitions. [2024-11-24 00:45:54,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:45:54,113 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (56), 2 states have call predecessors, (56), 3 states have return successors, (55), 3 states have call predecessors, (55), 2 states have call successors, (55) Word has length 445 [2024-11-24 00:45:54,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:45:54,124 INFO L225 Difference]: With dead ends: 2541 [2024-11-24 00:45:54,124 INFO L226 Difference]: Without dead ends: 1313 [2024-11-24 00:45:54,129 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 446 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:45:54,129 INFO L435 NwaCegarLoop]: 866 mSDtfsCounter, 0 mSDsluCounter, 2584 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3450 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:45:54,130 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3450 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:45:54,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2024-11-24 00:45:54,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 1307. [2024-11-24 00:45:54,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1307 states, 843 states have (on average 1.3250296559905101) internal successors, (1117), 894 states have internal predecessors, (1117), 372 states have call successors, (372), 89 states have call predecessors, (372), 91 states have return successors, (378), 363 states have call predecessors, (378), 371 states have call successors, (378) [2024-11-24 00:45:54,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1307 states to 1307 states and 1867 transitions. [2024-11-24 00:45:54,237 INFO L78 Accepts]: Start accepts. Automaton has 1307 states and 1867 transitions. Word has length 445 [2024-11-24 00:45:54,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:45:54,238 INFO L471 AbstractCegarLoop]: Abstraction has 1307 states and 1867 transitions. [2024-11-24 00:45:54,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (56), 2 states have call predecessors, (56), 3 states have return successors, (55), 3 states have call predecessors, (55), 2 states have call successors, (55) [2024-11-24 00:45:54,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1307 states and 1867 transitions. [2024-11-24 00:45:54,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2024-11-24 00:45:54,246 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:45:54,247 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:45:54,262 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-24 00:45:54,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:45:54,448 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:45:54,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:45:54,449 INFO L85 PathProgramCache]: Analyzing trace with hash 69898396, now seen corresponding path program 1 times [2024-11-24 00:45:54,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:45:54,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471454848] [2024-11-24 00:45:54,449 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:45:54,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:45:54,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:45:55,255 INFO L134 CoverageAnalysis]: Checked inductivity of 831 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 817 trivial. 0 not checked. [2024-11-24 00:45:55,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:45:55,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471454848] [2024-11-24 00:45:55,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471454848] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:45:55,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152423462] [2024-11-24 00:45:55,256 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:45:55,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:45:55,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:45:55,258 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:45:55,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 00:45:56,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:45:56,602 INFO L256 TraceCheckSpWp]: Trace formula consists of 2571 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 00:45:56,612 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:45:56,642 INFO L134 CoverageAnalysis]: Checked inductivity of 831 backedges. 393 proven. 0 refuted. 0 times theorem prover too weak. 438 trivial. 0 not checked. [2024-11-24 00:45:56,643 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:45:56,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152423462] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:45:56,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:45:56,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2024-11-24 00:45:56,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654911078] [2024-11-24 00:45:56,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:45:56,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:45:56,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:45:56,645 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:45:56,645 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:45:56,645 INFO L87 Difference]: Start difference. First operand 1307 states and 1867 transitions. Second operand has 5 states, 5 states have (on average 37.4) internal successors, (187), 4 states have internal predecessors, (187), 2 states have call successors, (63), 2 states have call predecessors, (63), 3 states have return successors, (62), 3 states have call predecessors, (62), 2 states have call successors, (62) [2024-11-24 00:45:56,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:45:56,782 INFO L93 Difference]: Finished difference Result 2490 states and 3568 transitions. [2024-11-24 00:45:56,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:45:56,783 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.4) internal successors, (187), 4 states have internal predecessors, (187), 2 states have call successors, (63), 2 states have call predecessors, (63), 3 states have return successors, (62), 3 states have call predecessors, (62), 2 states have call successors, (62) Word has length 462 [2024-11-24 00:45:56,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:45:56,802 INFO L225 Difference]: With dead ends: 2490 [2024-11-24 00:45:56,802 INFO L226 Difference]: Without dead ends: 1313 [2024-11-24 00:45:56,809 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 463 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:45:56,810 INFO L435 NwaCegarLoop]: 866 mSDtfsCounter, 0 mSDsluCounter, 2584 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3450 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:45:56,810 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3450 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:45:56,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2024-11-24 00:45:56,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 1307. [2024-11-24 00:45:56,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1307 states, 843 states have (on average 1.3250296559905101) internal successors, (1117), 894 states have internal predecessors, (1117), 372 states have call successors, (372), 89 states have call predecessors, (372), 91 states have return successors, (376), 363 states have call predecessors, (376), 371 states have call successors, (376) [2024-11-24 00:45:56,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1307 states to 1307 states and 1865 transitions. [2024-11-24 00:45:56,919 INFO L78 Accepts]: Start accepts. Automaton has 1307 states and 1865 transitions. Word has length 462 [2024-11-24 00:45:56,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:45:56,919 INFO L471 AbstractCegarLoop]: Abstraction has 1307 states and 1865 transitions. [2024-11-24 00:45:56,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.4) internal successors, (187), 4 states have internal predecessors, (187), 2 states have call successors, (63), 2 states have call predecessors, (63), 3 states have return successors, (62), 3 states have call predecessors, (62), 2 states have call successors, (62) [2024-11-24 00:45:56,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1307 states and 1865 transitions. [2024-11-24 00:45:56,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2024-11-24 00:45:56,928 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:45:56,929 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:45:56,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-24 00:45:57,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:45:57,130 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:45:57,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:45:57,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1499015466, now seen corresponding path program 2 times [2024-11-24 00:45:57,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:45:57,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801373056] [2024-11-24 00:45:57,131 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:45:57,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:45:57,693 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 00:45:57,693 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:45:58,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 8 proven. 26 refuted. 0 times theorem prover too weak. 1024 trivial. 0 not checked. [2024-11-24 00:45:58,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:45:58,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801373056] [2024-11-24 00:45:58,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801373056] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:45:58,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499105598] [2024-11-24 00:45:58,731 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:45:58,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:45:58,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:45:58,733 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:45:58,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 00:51:12,570 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 00:51:12,570 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:51:12,596 INFO L256 TraceCheckSpWp]: Trace formula consists of 2618 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-24 00:51:12,608 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:51:13,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 553 proven. 0 refuted. 0 times theorem prover too weak. 505 trivial. 0 not checked. [2024-11-24 00:51:13,774 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:51:13,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499105598] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:51:13,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:51:13,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2024-11-24 00:51:13,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924243007] [2024-11-24 00:51:13,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:51:13,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 00:51:13,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:51:13,777 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 00:51:13,777 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-24 00:51:13,778 INFO L87 Difference]: Start difference. First operand 1307 states and 1865 transitions. Second operand has 8 states, 8 states have (on average 23.875) internal successors, (191), 7 states have internal predecessors, (191), 4 states have call successors, (67), 3 states have call predecessors, (67), 4 states have return successors, (66), 5 states have call predecessors, (66), 4 states have call successors, (66) [2024-11-24 00:51:14,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:51:14,571 INFO L93 Difference]: Finished difference Result 2602 states and 3696 transitions. [2024-11-24 00:51:14,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-24 00:51:14,572 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 23.875) internal successors, (191), 7 states have internal predecessors, (191), 4 states have call successors, (67), 3 states have call predecessors, (67), 4 states have return successors, (66), 5 states have call predecessors, (66), 4 states have call successors, (66) Word has length 479 [2024-11-24 00:51:14,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:51:14,594 INFO L225 Difference]: With dead ends: 2602 [2024-11-24 00:51:14,594 INFO L226 Difference]: Without dead ends: 1370 [2024-11-24 00:51:14,598 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 474 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2024-11-24 00:51:14,598 INFO L435 NwaCegarLoop]: 876 mSDtfsCounter, 181 mSDsluCounter, 5153 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 6029 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:51:14,599 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 6029 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 00:51:14,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1370 states. [2024-11-24 00:51:14,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1370 to 1366. [2024-11-24 00:51:14,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1366 states, 875 states have (on average 1.3154285714285714) internal successors, (1151), 926 states have internal predecessors, (1151), 389 states have call successors, (389), 99 states have call predecessors, (389), 101 states have return successors, (393), 380 states have call predecessors, (393), 388 states have call successors, (393) [2024-11-24 00:51:14,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1366 states to 1366 states and 1933 transitions. [2024-11-24 00:51:14,746 INFO L78 Accepts]: Start accepts. Automaton has 1366 states and 1933 transitions. Word has length 479 [2024-11-24 00:51:14,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:51:14,746 INFO L471 AbstractCegarLoop]: Abstraction has 1366 states and 1933 transitions. [2024-11-24 00:51:14,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.875) internal successors, (191), 7 states have internal predecessors, (191), 4 states have call successors, (67), 3 states have call predecessors, (67), 4 states have return successors, (66), 5 states have call predecessors, (66), 4 states have call successors, (66) [2024-11-24 00:51:14,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1366 states and 1933 transitions. [2024-11-24 00:51:14,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2024-11-24 00:51:14,756 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:51:14,756 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:51:14,788 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-24 00:51:14,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-24 00:51:14,958 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:51:14,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:51:14,961 INFO L85 PathProgramCache]: Analyzing trace with hash 2016128618, now seen corresponding path program 1 times [2024-11-24 00:51:14,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:51:14,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445353866] [2024-11-24 00:51:14,961 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:51:14,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:51:15,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:51:16,309 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1050 trivial. 0 not checked. [2024-11-24 00:51:16,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:51:16,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445353866] [2024-11-24 00:51:16,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445353866] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:51:16,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:51:16,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:51:16,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886556999] [2024-11-24 00:51:16,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:51:16,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:51:16,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:51:16,312 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:51:16,313 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:51:16,313 INFO L87 Difference]: Start difference. First operand 1366 states and 1933 transitions. Second operand has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 6 states have internal predecessors, (165), 3 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) [2024-11-24 00:51:16,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:51:16,842 INFO L93 Difference]: Finished difference Result 3730 states and 5318 transitions. [2024-11-24 00:51:16,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 00:51:16,843 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 6 states have internal predecessors, (165), 3 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) Word has length 480 [2024-11-24 00:51:16,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:51:16,874 INFO L225 Difference]: With dead ends: 3730 [2024-11-24 00:51:16,875 INFO L226 Difference]: Without dead ends: 2600 [2024-11-24 00:51:16,879 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:51:16,880 INFO L435 NwaCegarLoop]: 855 mSDtfsCounter, 869 mSDsluCounter, 4211 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 5066 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:51:16,881 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [870 Valid, 5066 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 00:51:16,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2600 states. [2024-11-24 00:51:17,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2600 to 1547. [2024-11-24 00:51:17,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1547 states, 974 states have (on average 1.3039014373716633) internal successors, (1270), 1033 states have internal predecessors, (1270), 456 states have call successors, (456), 113 states have call predecessors, (456), 116 states have return successors, (461), 446 states have call predecessors, (461), 455 states have call successors, (461) [2024-11-24 00:51:17,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1547 states to 1547 states and 2187 transitions. [2024-11-24 00:51:17,082 INFO L78 Accepts]: Start accepts. Automaton has 1547 states and 2187 transitions. Word has length 480 [2024-11-24 00:51:17,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:51:17,083 INFO L471 AbstractCegarLoop]: Abstraction has 1547 states and 2187 transitions. [2024-11-24 00:51:17,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 6 states have internal predecessors, (165), 3 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) [2024-11-24 00:51:17,083 INFO L276 IsEmpty]: Start isEmpty. Operand 1547 states and 2187 transitions. [2024-11-24 00:51:17,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2024-11-24 00:51:17,095 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:51:17,095 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:51:17,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-24 00:51:17,096 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:51:17,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:51:17,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1532733992, now seen corresponding path program 1 times [2024-11-24 00:51:17,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:51:17,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614841316] [2024-11-24 00:51:17,096 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:51:17,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:51:17,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:51:18,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1050 trivial. 0 not checked. [2024-11-24 00:51:18,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:51:18,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614841316] [2024-11-24 00:51:18,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614841316] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:51:18,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:51:18,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 00:51:18,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704631828] [2024-11-24 00:51:18,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:51:18,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 00:51:18,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:51:18,462 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 00:51:18,462 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:51:18,463 INFO L87 Difference]: Start difference. First operand 1547 states and 2187 transitions. Second operand has 8 states, 8 states have (on average 20.625) internal successors, (165), 7 states have internal predecessors, (165), 3 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) [2024-11-24 00:51:19,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:51:19,029 INFO L93 Difference]: Finished difference Result 3726 states and 5313 transitions. [2024-11-24 00:51:19,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 00:51:19,030 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 7 states have internal predecessors, (165), 3 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) Word has length 480 [2024-11-24 00:51:19,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:51:19,049 INFO L225 Difference]: With dead ends: 3726 [2024-11-24 00:51:19,049 INFO L226 Difference]: Without dead ends: 2598 [2024-11-24 00:51:19,053 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:51:19,054 INFO L435 NwaCegarLoop]: 856 mSDtfsCounter, 862 mSDsluCounter, 4215 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 5071 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:51:19,054 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [863 Valid, 5071 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 00:51:19,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2598 states. [2024-11-24 00:51:19,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2598 to 1545. [2024-11-24 00:51:19,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1545 states, 972 states have (on average 1.3034979423868314) internal successors, (1267), 1031 states have internal predecessors, (1267), 456 states have call successors, (456), 113 states have call predecessors, (456), 116 states have return successors, (461), 446 states have call predecessors, (461), 455 states have call successors, (461) [2024-11-24 00:51:19,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1545 states to 1545 states and 2184 transitions. [2024-11-24 00:51:19,250 INFO L78 Accepts]: Start accepts. Automaton has 1545 states and 2184 transitions. Word has length 480 [2024-11-24 00:51:19,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:51:19,251 INFO L471 AbstractCegarLoop]: Abstraction has 1545 states and 2184 transitions. [2024-11-24 00:51:19,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 7 states have internal predecessors, (165), 3 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) [2024-11-24 00:51:19,251 INFO L276 IsEmpty]: Start isEmpty. Operand 1545 states and 2184 transitions. [2024-11-24 00:51:19,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2024-11-24 00:51:19,260 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:51:19,260 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:51:19,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-24 00:51:19,261 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:51:19,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:51:19,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1429437798, now seen corresponding path program 1 times [2024-11-24 00:51:19,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:51:19,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269187067] [2024-11-24 00:51:19,262 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:51:19,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:51:19,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:51:20,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1050 trivial. 0 not checked. [2024-11-24 00:51:20,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:51:20,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269187067] [2024-11-24 00:51:20,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269187067] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:51:20,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:51:20,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 00:51:20,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972108720] [2024-11-24 00:51:20,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:51:20,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 00:51:20,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:51:20,424 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 00:51:20,425 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:51:20,425 INFO L87 Difference]: Start difference. First operand 1545 states and 2184 transitions. Second operand has 8 states, 8 states have (on average 20.625) internal successors, (165), 7 states have internal predecessors, (165), 3 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) [2024-11-24 00:51:20,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:51:20,991 INFO L93 Difference]: Finished difference Result 3714 states and 5298 transitions. [2024-11-24 00:51:20,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 00:51:20,992 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 7 states have internal predecessors, (165), 3 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) Word has length 480 [2024-11-24 00:51:20,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:51:21,012 INFO L225 Difference]: With dead ends: 3714 [2024-11-24 00:51:21,012 INFO L226 Difference]: Without dead ends: 2588 [2024-11-24 00:51:21,017 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:51:21,018 INFO L435 NwaCegarLoop]: 855 mSDtfsCounter, 861 mSDsluCounter, 4206 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 5061 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:51:21,018 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [862 Valid, 5061 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 00:51:21,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2588 states. [2024-11-24 00:51:21,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2588 to 1543. [2024-11-24 00:51:21,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1543 states, 970 states have (on average 1.3030927835051547) internal successors, (1264), 1029 states have internal predecessors, (1264), 456 states have call successors, (456), 113 states have call predecessors, (456), 116 states have return successors, (461), 446 states have call predecessors, (461), 455 states have call successors, (461) [2024-11-24 00:51:21,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 2181 transitions. [2024-11-24 00:51:21,235 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 2181 transitions. Word has length 480 [2024-11-24 00:51:21,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:51:21,236 INFO L471 AbstractCegarLoop]: Abstraction has 1543 states and 2181 transitions. [2024-11-24 00:51:21,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 7 states have internal predecessors, (165), 3 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) [2024-11-24 00:51:21,237 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 2181 transitions. [2024-11-24 00:51:21,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2024-11-24 00:51:21,245 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:51:21,245 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:51:21,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-24 00:51:21,245 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:51:21,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:51:21,247 INFO L85 PathProgramCache]: Analyzing trace with hash -188544988, now seen corresponding path program 1 times [2024-11-24 00:51:21,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:51:21,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482303988] [2024-11-24 00:51:21,247 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:51:21,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:51:21,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:51:22,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1050 trivial. 0 not checked. [2024-11-24 00:51:22,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:51:22,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482303988] [2024-11-24 00:51:22,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482303988] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:51:22,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:51:22,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 00:51:22,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094731376] [2024-11-24 00:51:22,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:51:22,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 00:51:22,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:51:22,708 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 00:51:22,708 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:51:22,708 INFO L87 Difference]: Start difference. First operand 1543 states and 2181 transitions. Second operand has 8 states, 8 states have (on average 20.625) internal successors, (165), 7 states have internal predecessors, (165), 3 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) [2024-11-24 00:51:23,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:51:23,297 INFO L93 Difference]: Finished difference Result 3719 states and 5304 transitions. [2024-11-24 00:51:23,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 00:51:23,297 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 7 states have internal predecessors, (165), 3 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) Word has length 480 [2024-11-24 00:51:23,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:51:23,317 INFO L225 Difference]: With dead ends: 3719 [2024-11-24 00:51:23,318 INFO L226 Difference]: Without dead ends: 2595 [2024-11-24 00:51:23,326 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:51:23,326 INFO L435 NwaCegarLoop]: 855 mSDtfsCounter, 861 mSDsluCounter, 4211 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 5066 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:51:23,329 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [862 Valid, 5066 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 00:51:23,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2595 states. [2024-11-24 00:51:23,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2595 to 1543. [2024-11-24 00:51:23,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1543 states, 970 states have (on average 1.3020618556701031) internal successors, (1263), 1029 states have internal predecessors, (1263), 456 states have call successors, (456), 113 states have call predecessors, (456), 116 states have return successors, (461), 446 states have call predecessors, (461), 455 states have call successors, (461) [2024-11-24 00:51:23,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 2180 transitions. [2024-11-24 00:51:23,584 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 2180 transitions. Word has length 480 [2024-11-24 00:51:23,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:51:23,585 INFO L471 AbstractCegarLoop]: Abstraction has 1543 states and 2180 transitions. [2024-11-24 00:51:23,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 7 states have internal predecessors, (165), 3 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) [2024-11-24 00:51:23,586 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 2180 transitions. [2024-11-24 00:51:23,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2024-11-24 00:51:23,593 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:51:23,594 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:51:23,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-24 00:51:23,594 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:51:23,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:51:23,595 INFO L85 PathProgramCache]: Analyzing trace with hash 194128482, now seen corresponding path program 1 times [2024-11-24 00:51:23,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:51:23,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737181503] [2024-11-24 00:51:23,595 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:51:23,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:51:23,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:51:24,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1050 trivial. 0 not checked. [2024-11-24 00:51:24,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:51:24,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737181503] [2024-11-24 00:51:24,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737181503] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:51:24,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:51:24,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 00:51:24,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630631695] [2024-11-24 00:51:24,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:51:24,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 00:51:24,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:51:24,682 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 00:51:24,682 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:51:24,683 INFO L87 Difference]: Start difference. First operand 1543 states and 2180 transitions. Second operand has 8 states, 8 states have (on average 20.625) internal successors, (165), 7 states have internal predecessors, (165), 3 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) [2024-11-24 00:51:25,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:51:25,119 INFO L93 Difference]: Finished difference Result 2604 states and 3692 transitions. [2024-11-24 00:51:25,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 00:51:25,119 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 7 states have internal predecessors, (165), 3 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) Word has length 480 [2024-11-24 00:51:25,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:51:25,130 INFO L225 Difference]: With dead ends: 2604 [2024-11-24 00:51:25,130 INFO L226 Difference]: Without dead ends: 1370 [2024-11-24 00:51:25,133 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:51:25,135 INFO L435 NwaCegarLoop]: 852 mSDtfsCounter, 200 mSDsluCounter, 4203 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 5055 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:51:25,136 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 5055 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 00:51:25,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1370 states. [2024-11-24 00:51:25,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1370 to 1366. [2024-11-24 00:51:25,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1366 states, 875 states have (on average 1.3142857142857143) internal successors, (1150), 926 states have internal predecessors, (1150), 389 states have call successors, (389), 99 states have call predecessors, (389), 101 states have return successors, (393), 380 states have call predecessors, (393), 388 states have call successors, (393) [2024-11-24 00:51:25,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1366 states to 1366 states and 1932 transitions. [2024-11-24 00:51:25,310 INFO L78 Accepts]: Start accepts. Automaton has 1366 states and 1932 transitions. Word has length 480 [2024-11-24 00:51:25,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:51:25,310 INFO L471 AbstractCegarLoop]: Abstraction has 1366 states and 1932 transitions. [2024-11-24 00:51:25,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 7 states have internal predecessors, (165), 3 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (56), 4 states have call predecessors, (56), 3 states have call successors, (56) [2024-11-24 00:51:25,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1366 states and 1932 transitions. [2024-11-24 00:51:25,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2024-11-24 00:51:25,317 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:51:25,317 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:51:25,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-24 00:51:25,318 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:51:25,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:51:25,319 INFO L85 PathProgramCache]: Analyzing trace with hash 2105485767, now seen corresponding path program 1 times [2024-11-24 00:51:25,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:51:25,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931455066] [2024-11-24 00:51:25,319 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:51:25,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:51:25,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:51:26,594 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 8 proven. 26 refuted. 0 times theorem prover too weak. 1024 trivial. 0 not checked. [2024-11-24 00:51:26,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:51:26,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931455066] [2024-11-24 00:51:26,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931455066] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:51:26,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944545596] [2024-11-24 00:51:26,595 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:51:26,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:51:26,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:51:26,597 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:51:26,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-24 00:51:27,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:51:28,007 INFO L256 TraceCheckSpWp]: Trace formula consists of 2623 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-24 00:51:28,018 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:51:28,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 507 proven. 0 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2024-11-24 00:51:28,068 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:51:28,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944545596] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:51:28,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:51:28,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 6 [2024-11-24 00:51:28,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262393276] [2024-11-24 00:51:28,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:51:28,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:51:28,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:51:28,070 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:51:28,071 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:51:28,071 INFO L87 Difference]: Start difference. First operand 1366 states and 1932 transitions. Second operand has 6 states, 6 states have (on average 32.166666666666664) internal successors, (193), 5 states have internal predecessors, (193), 2 states have call successors, (67), 2 states have call predecessors, (67), 3 states have return successors, (67), 3 states have call predecessors, (67), 2 states have call successors, (67) [2024-11-24 00:51:28,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:51:28,332 INFO L93 Difference]: Finished difference Result 2719 states and 3894 transitions. [2024-11-24 00:51:28,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:51:28,333 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 32.166666666666664) internal successors, (193), 5 states have internal predecessors, (193), 2 states have call successors, (67), 2 states have call predecessors, (67), 3 states have return successors, (67), 3 states have call predecessors, (67), 2 states have call successors, (67) Word has length 481 [2024-11-24 00:51:28,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:51:28,348 INFO L225 Difference]: With dead ends: 2719 [2024-11-24 00:51:28,348 INFO L226 Difference]: Without dead ends: 1389 [2024-11-24 00:51:28,353 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:51:28,356 INFO L435 NwaCegarLoop]: 864 mSDtfsCounter, 0 mSDsluCounter, 3451 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4315 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:51:28,356 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4315 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:51:28,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2024-11-24 00:51:28,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 1389. [2024-11-24 00:51:28,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1389 states, 893 states have (on average 1.3079507278835387) internal successors, (1168), 945 states have internal predecessors, (1168), 389 states have call successors, (389), 99 states have call predecessors, (389), 106 states have return successors, (401), 384 states have call predecessors, (401), 388 states have call successors, (401) [2024-11-24 00:51:28,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1389 states to 1389 states and 1958 transitions. [2024-11-24 00:51:28,545 INFO L78 Accepts]: Start accepts. Automaton has 1389 states and 1958 transitions. Word has length 481 [2024-11-24 00:51:28,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:51:28,546 INFO L471 AbstractCegarLoop]: Abstraction has 1389 states and 1958 transitions. [2024-11-24 00:51:28,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.166666666666664) internal successors, (193), 5 states have internal predecessors, (193), 2 states have call successors, (67), 2 states have call predecessors, (67), 3 states have return successors, (67), 3 states have call predecessors, (67), 2 states have call successors, (67) [2024-11-24 00:51:28,546 INFO L276 IsEmpty]: Start isEmpty. Operand 1389 states and 1958 transitions. [2024-11-24 00:51:28,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2024-11-24 00:51:28,553 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:51:28,554 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:51:28,570 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-24 00:51:28,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:51:28,754 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:51:28,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:51:28,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1261841611, now seen corresponding path program 1 times [2024-11-24 00:51:28,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:51:28,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217280395] [2024-11-24 00:51:28,755 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:51:28,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:51:29,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:51:29,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1112 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1092 trivial. 0 not checked. [2024-11-24 00:51:29,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:51:29,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217280395] [2024-11-24 00:51:29,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217280395] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:51:29,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17520201] [2024-11-24 00:51:29,843 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:51:29,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:51:29,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:51:29,847 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:51:29,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-24 00:51:32,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:51:32,422 INFO L256 TraceCheckSpWp]: Trace formula consists of 2675 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-24 00:51:32,430 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:51:32,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1112 backedges. 197 proven. 0 refuted. 0 times theorem prover too weak. 915 trivial. 0 not checked. [2024-11-24 00:51:32,502 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:51:32,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17520201] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:51:32,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:51:32,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-24 00:51:32,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235079016] [2024-11-24 00:51:32,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:51:32,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:51:32,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:51:32,504 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:51:32,504 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:51:32,505 INFO L87 Difference]: Start difference. First operand 1389 states and 1958 transitions. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 2 states have call successors, (60), 2 states have call predecessors, (60), 3 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2024-11-24 00:51:32,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:51:32,724 INFO L93 Difference]: Finished difference Result 2760 states and 3899 transitions. [2024-11-24 00:51:32,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:51:32,725 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 2 states have call successors, (60), 2 states have call predecessors, (60), 3 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) Word has length 493 [2024-11-24 00:51:32,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:51:32,738 INFO L225 Difference]: With dead ends: 2760 [2024-11-24 00:51:32,738 INFO L226 Difference]: Without dead ends: 1390 [2024-11-24 00:51:32,743 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 492 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:51:32,743 INFO L435 NwaCegarLoop]: 865 mSDtfsCounter, 0 mSDsluCounter, 1716 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2581 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:51:32,744 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2581 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:51:32,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1390 states. [2024-11-24 00:51:32,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1390 to 1390. [2024-11-24 00:51:32,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1390 states, 894 states have (on average 1.307606263982103) internal successors, (1169), 946 states have internal predecessors, (1169), 389 states have call successors, (389), 99 states have call predecessors, (389), 106 states have return successors, (401), 384 states have call predecessors, (401), 388 states have call successors, (401) [2024-11-24 00:51:32,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 1959 transitions. [2024-11-24 00:51:32,932 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 1959 transitions. Word has length 493 [2024-11-24 00:51:32,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:51:32,933 INFO L471 AbstractCegarLoop]: Abstraction has 1390 states and 1959 transitions. [2024-11-24 00:51:32,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 2 states have call successors, (60), 2 states have call predecessors, (60), 3 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2024-11-24 00:51:32,933 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 1959 transitions. [2024-11-24 00:51:32,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2024-11-24 00:51:32,991 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:51:32,994 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:51:33,015 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-24 00:51:33,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:51:33,195 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:51:33,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:51:33,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1041355438, now seen corresponding path program 1 times [2024-11-24 00:51:33,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:51:33,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51429507] [2024-11-24 00:51:33,197 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:51:33,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:51:33,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:51:34,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1163 trivial. 0 not checked. [2024-11-24 00:51:34,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:51:34,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51429507] [2024-11-24 00:51:34,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51429507] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:51:34,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769530501] [2024-11-24 00:51:34,485 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:51:34,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:51:34,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:51:34,488 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:51:34,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-24 00:51:36,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:51:36,248 INFO L256 TraceCheckSpWp]: Trace formula consists of 2791 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-24 00:51:36,259 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:51:36,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 1134 trivial. 0 not checked. [2024-11-24 00:51:36,528 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:51:36,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769530501] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:51:36,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:51:36,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 13 [2024-11-24 00:51:36,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372738782] [2024-11-24 00:51:36,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:51:36,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 00:51:36,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:51:36,530 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 00:51:36,531 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-24 00:51:36,531 INFO L87 Difference]: Start difference. First operand 1390 states and 1959 transitions. Second operand has 10 states, 9 states have (on average 20.11111111111111) internal successors, (181), 8 states have internal predecessors, (181), 3 states have call successors, (59), 2 states have call predecessors, (59), 4 states have return successors, (59), 4 states have call predecessors, (59), 3 states have call successors, (59) [2024-11-24 00:51:36,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:51:36,852 INFO L93 Difference]: Finished difference Result 2741 states and 3911 transitions. [2024-11-24 00:51:36,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 00:51:36,853 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 20.11111111111111) internal successors, (181), 8 states have internal predecessors, (181), 3 states have call successors, (59), 2 states have call predecessors, (59), 4 states have return successors, (59), 4 states have call predecessors, (59), 3 states have call successors, (59) Word has length 505 [2024-11-24 00:51:36,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:51:36,865 INFO L225 Difference]: With dead ends: 2741 [2024-11-24 00:51:36,866 INFO L226 Difference]: Without dead ends: 1390 [2024-11-24 00:51:36,871 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 498 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-24 00:51:36,872 INFO L435 NwaCegarLoop]: 866 mSDtfsCounter, 0 mSDsluCounter, 6905 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7771 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:51:36,872 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 7771 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:51:36,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1390 states. [2024-11-24 00:51:37,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1390 to 1390. [2024-11-24 00:51:37,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1390 states, 894 states have (on average 1.303131991051454) internal successors, (1165), 946 states have internal predecessors, (1165), 389 states have call successors, (389), 99 states have call predecessors, (389), 106 states have return successors, (401), 384 states have call predecessors, (401), 388 states have call successors, (401) [2024-11-24 00:51:37,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 1955 transitions. [2024-11-24 00:51:37,079 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 1955 transitions. Word has length 505 [2024-11-24 00:51:37,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:51:37,080 INFO L471 AbstractCegarLoop]: Abstraction has 1390 states and 1955 transitions. [2024-11-24 00:51:37,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 20.11111111111111) internal successors, (181), 8 states have internal predecessors, (181), 3 states have call successors, (59), 2 states have call predecessors, (59), 4 states have return successors, (59), 4 states have call predecessors, (59), 3 states have call successors, (59) [2024-11-24 00:51:37,082 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 1955 transitions. [2024-11-24 00:51:37,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2024-11-24 00:51:37,089 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:51:37,090 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:51:37,109 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-24 00:51:37,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-24 00:51:37,291 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:51:37,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:51:37,291 INFO L85 PathProgramCache]: Analyzing trace with hash 326245403, now seen corresponding path program 2 times [2024-11-24 00:51:37,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:51:37,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253202112] [2024-11-24 00:51:37,292 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:51:37,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:51:37,746 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 00:51:37,746 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:51:38,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1163 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1127 trivial. 0 not checked. [2024-11-24 00:51:38,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:51:38,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253202112] [2024-11-24 00:51:38,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253202112] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:51:38,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116794167] [2024-11-24 00:51:38,640 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:51:38,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:51:38,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:51:38,644 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:51:38,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-24 00:53:28,019 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 00:53:28,019 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:53:28,042 INFO L256 TraceCheckSpWp]: Trace formula consists of 2765 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-24 00:53:28,049 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:53:28,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1163 backedges. 184 proven. 1 refuted. 0 times theorem prover too weak. 978 trivial. 0 not checked. [2024-11-24 00:53:28,148 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:53:29,042 INFO L134 CoverageAnalysis]: Checked inductivity of 1163 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1127 trivial. 0 not checked. [2024-11-24 00:53:29,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116794167] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:53:29,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:53:29,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-24 00:53:29,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514337294] [2024-11-24 00:53:29,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:53:29,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 00:53:29,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:53:29,046 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 00:53:29,046 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:53:29,046 INFO L87 Difference]: Start difference. First operand 1390 states and 1955 transitions. Second operand has 10 states, 10 states have (on average 24.2) internal successors, (242), 10 states have internal predecessors, (242), 2 states have call successors, (110), 2 states have call predecessors, (110), 4 states have return successors, (110), 2 states have call predecessors, (110), 2 states have call successors, (110) [2024-11-24 00:53:29,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:53:29,413 INFO L93 Difference]: Finished difference Result 2772 states and 3911 transitions. [2024-11-24 00:53:29,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 00:53:29,414 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 24.2) internal successors, (242), 10 states have internal predecessors, (242), 2 states have call successors, (110), 2 states have call predecessors, (110), 4 states have return successors, (110), 2 states have call predecessors, (110), 2 states have call successors, (110) Word has length 499 [2024-11-24 00:53:29,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:53:29,426 INFO L225 Difference]: With dead ends: 2772 [2024-11-24 00:53:29,426 INFO L226 Difference]: Without dead ends: 1401 [2024-11-24 00:53:29,431 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1005 GetRequests, 993 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2024-11-24 00:53:29,432 INFO L435 NwaCegarLoop]: 863 mSDtfsCounter, 6 mSDsluCounter, 2568 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3431 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:53:29,432 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 3431 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:53:29,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1401 states. [2024-11-24 00:53:29,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1401 to 1400. [2024-11-24 00:53:29,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1400 states, 903 states have (on average 1.3034330011074198) internal successors, (1177), 955 states have internal predecessors, (1177), 389 states have call successors, (389), 100 states have call predecessors, (389), 107 states have return successors, (401), 384 states have call predecessors, (401), 388 states have call successors, (401) [2024-11-24 00:53:29,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 1967 transitions. [2024-11-24 00:53:29,641 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 1967 transitions. Word has length 499 [2024-11-24 00:53:29,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:53:29,641 INFO L471 AbstractCegarLoop]: Abstraction has 1400 states and 1967 transitions. [2024-11-24 00:53:29,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.2) internal successors, (242), 10 states have internal predecessors, (242), 2 states have call successors, (110), 2 states have call predecessors, (110), 4 states have return successors, (110), 2 states have call predecessors, (110), 2 states have call successors, (110) [2024-11-24 00:53:29,642 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 1967 transitions. [2024-11-24 00:53:29,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2024-11-24 00:53:29,652 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:53:29,652 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 20, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:53:29,684 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-24 00:53:29,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-24 00:53:29,854 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:53:29,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:53:29,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1203356235, now seen corresponding path program 3 times [2024-11-24 00:53:29,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:53:29,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385945357] [2024-11-24 00:53:29,855 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 00:53:29,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:53:30,319 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-24 00:53:30,319 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:53:31,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1422 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1414 trivial. 0 not checked. [2024-11-24 00:53:31,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:53:31,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385945357] [2024-11-24 00:53:31,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385945357] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:53:31,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:53:31,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:53:31,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612087004] [2024-11-24 00:53:31,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:53:31,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:53:31,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:53:31,157 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:53:31,158 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:53:31,158 INFO L87 Difference]: Start difference. First operand 1400 states and 1967 transitions. Second operand has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 6 states have internal predecessors, (169), 2 states have call successors, (58), 2 states have call predecessors, (58), 2 states have return successors, (57), 3 states have call predecessors, (57), 2 states have call successors, (57) [2024-11-24 00:53:31,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:53:31,854 INFO L93 Difference]: Finished difference Result 1437 states and 2030 transitions. [2024-11-24 00:53:31,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 00:53:31,855 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 6 states have internal predecessors, (169), 2 states have call successors, (58), 2 states have call predecessors, (58), 2 states have return successors, (57), 3 states have call predecessors, (57), 2 states have call successors, (57) Word has length 513 [2024-11-24 00:53:31,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:53:31,870 INFO L225 Difference]: With dead ends: 1437 [2024-11-24 00:53:31,871 INFO L226 Difference]: Without dead ends: 1427 [2024-11-24 00:53:31,872 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:53:31,872 INFO L435 NwaCegarLoop]: 847 mSDtfsCounter, 6 mSDsluCounter, 4177 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 5024 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 00:53:31,874 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 5024 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 00:53:31,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1427 states. [2024-11-24 00:53:32,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1427 to 1405. [2024-11-24 00:53:32,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1405 states, 907 states have (on average 1.3020948180815877) internal successors, (1181), 959 states have internal predecessors, (1181), 389 states have call successors, (389), 100 states have call predecessors, (389), 108 states have return successors, (405), 385 states have call predecessors, (405), 388 states have call successors, (405) [2024-11-24 00:53:32,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1405 states to 1405 states and 1975 transitions. [2024-11-24 00:53:32,089 INFO L78 Accepts]: Start accepts. Automaton has 1405 states and 1975 transitions. Word has length 513 [2024-11-24 00:53:32,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:53:32,090 INFO L471 AbstractCegarLoop]: Abstraction has 1405 states and 1975 transitions. [2024-11-24 00:53:32,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 6 states have internal predecessors, (169), 2 states have call successors, (58), 2 states have call predecessors, (58), 2 states have return successors, (57), 3 states have call predecessors, (57), 2 states have call successors, (57) [2024-11-24 00:53:32,091 INFO L276 IsEmpty]: Start isEmpty. Operand 1405 states and 1975 transitions. [2024-11-24 00:53:32,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2024-11-24 00:53:32,098 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:53:32,098 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 20, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:53:32,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-24 00:53:32,100 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:53:32,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:53:32,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1758325728, now seen corresponding path program 1 times [2024-11-24 00:53:32,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:53:32,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117388620] [2024-11-24 00:53:32,102 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:53:32,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:53:32,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:53:33,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1422 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 1292 trivial. 0 not checked. [2024-11-24 00:53:33,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:53:33,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117388620] [2024-11-24 00:53:33,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117388620] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:53:33,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883350209] [2024-11-24 00:53:33,965 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:53:33,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:53:33,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:53:33,967 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:53:33,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-24 00:53:35,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:53:35,713 INFO L256 TraceCheckSpWp]: Trace formula consists of 2975 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-24 00:53:35,723 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:53:36,041 INFO L134 CoverageAnalysis]: Checked inductivity of 1422 backedges. 373 proven. 50 refuted. 0 times theorem prover too weak. 999 trivial. 0 not checked. [2024-11-24 00:53:36,041 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:53:37,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1422 backedges. 36 proven. 51 refuted. 0 times theorem prover too weak. 1335 trivial. 0 not checked. [2024-11-24 00:53:37,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883350209] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:53:37,035 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:53:37,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 6] total 21 [2024-11-24 00:53:37,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512374640] [2024-11-24 00:53:37,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:53:37,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-24 00:53:37,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:53:37,039 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-24 00:53:37,039 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2024-11-24 00:53:37,040 INFO L87 Difference]: Start difference. First operand 1405 states and 1975 transitions. Second operand has 21 states, 21 states have (on average 12.428571428571429) internal successors, (261), 21 states have internal predecessors, (261), 2 states have call successors, (110), 2 states have call predecessors, (110), 5 states have return successors, (111), 2 states have call predecessors, (111), 2 states have call successors, (111) [2024-11-24 00:53:38,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:53:38,097 INFO L93 Difference]: Finished difference Result 2801 states and 3945 transitions. [2024-11-24 00:53:38,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-24 00:53:38,098 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 12.428571428571429) internal successors, (261), 21 states have internal predecessors, (261), 2 states have call successors, (110), 2 states have call predecessors, (110), 5 states have return successors, (111), 2 states have call predecessors, (111), 2 states have call successors, (111) Word has length 514 [2024-11-24 00:53:38,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:53:38,111 INFO L225 Difference]: With dead ends: 2801 [2024-11-24 00:53:38,111 INFO L226 Difference]: Without dead ends: 1408 [2024-11-24 00:53:38,117 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1046 GetRequests, 1015 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=193, Invalid=863, Unknown=0, NotChecked=0, Total=1056 [2024-11-24 00:53:38,118 INFO L435 NwaCegarLoop]: 858 mSDtfsCounter, 16 mSDsluCounter, 10246 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 11104 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:53:38,118 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 11104 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 00:53:38,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1408 states. [2024-11-24 00:53:38,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1408 to 1408. [2024-11-24 00:53:38,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1408 states, 910 states have (on average 1.2978021978021979) internal successors, (1181), 962 states have internal predecessors, (1181), 389 states have call successors, (389), 100 states have call predecessors, (389), 108 states have return successors, (405), 385 states have call predecessors, (405), 388 states have call successors, (405) [2024-11-24 00:53:38,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1408 states to 1408 states and 1975 transitions. [2024-11-24 00:53:38,379 INFO L78 Accepts]: Start accepts. Automaton has 1408 states and 1975 transitions. Word has length 514 [2024-11-24 00:53:38,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:53:38,379 INFO L471 AbstractCegarLoop]: Abstraction has 1408 states and 1975 transitions. [2024-11-24 00:53:38,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 12.428571428571429) internal successors, (261), 21 states have internal predecessors, (261), 2 states have call successors, (110), 2 states have call predecessors, (110), 5 states have return successors, (111), 2 states have call predecessors, (111), 2 states have call successors, (111) [2024-11-24 00:53:38,380 INFO L276 IsEmpty]: Start isEmpty. Operand 1408 states and 1975 transitions. [2024-11-24 00:53:38,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2024-11-24 00:53:38,387 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:53:38,387 INFO L218 NwaCegarLoop]: trace histogram [28, 21, 21, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:53:38,406 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-24 00:53:38,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-24 00:53:38,592 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:53:38,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:53:38,592 INFO L85 PathProgramCache]: Analyzing trace with hash -635343750, now seen corresponding path program 2 times [2024-11-24 00:53:38,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:53:38,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938433291] [2024-11-24 00:53:38,593 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:53:38,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:53:39,113 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 00:53:39,113 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:53:40,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1658 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 1460 trivial. 0 not checked. [2024-11-24 00:53:40,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:53:40,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938433291] [2024-11-24 00:53:40,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938433291] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:53:40,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969617327] [2024-11-24 00:53:40,592 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:53:40,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:53:40,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:53:40,597 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:53:40,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6adfe70-2fea-4c74-a55a-03b516404e59/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process