./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 d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/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_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash fe8c4b1a27642c802f8c97577aadb7892fddcd015ae43c580aa1247dba190651 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 06:42:25,409 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 06:42:25,472 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-12-02 06:42:25,476 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 06:42:25,477 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 06:42:25,502 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 06:42:25,503 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 06:42:25,503 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 06:42:25,504 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 06:42:25,504 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 06:42:25,504 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 06:42:25,504 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 06:42:25,504 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 06:42:25,504 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 06:42:25,505 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 06:42:25,505 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 06:42:25,505 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 06:42:25,505 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 06:42:25,505 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 06:42:25,505 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 06:42:25,505 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 06:42:25,506 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 06:42:25,506 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 06:42:25,506 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 06:42:25,506 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 06:42:25,506 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 06:42:25,506 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:42:25,506 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 06:42:25,506 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:42:25,507 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:42:25,507 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 06:42:25,507 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:42:25,507 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 06:42:25,507 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:42:25,507 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:42:25,507 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 06:42:25,507 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 06:42:25,508 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 06:42:25,508 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 06:42:25,508 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 06:42:25,508 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 06:42:25,508 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 06:42:25,508 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 06:42:25,508 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 06:42:25,508 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 06:42:25,508 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_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe8c4b1a27642c802f8c97577aadb7892fddcd015ae43c580aa1247dba190651 [2024-12-02 06:42:25,750 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 06:42:25,758 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 06:42:25,761 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 06:42:25,762 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 06:42:25,762 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 06:42:25,764 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--watchdog--it87_wdt.ko-entry_point.cil.out.i [2024-12-02 06:42:28,669 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/data/ee71717bb/dfb613c1a7f34a48ba6388f5716eaa32/FLAG21acf1f68 [2024-12-02 06:42:29,061 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 06:42:29,062 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--watchdog--it87_wdt.ko-entry_point.cil.out.i [2024-12-02 06:42:29,088 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/data/ee71717bb/dfb613c1a7f34a48ba6388f5716eaa32/FLAG21acf1f68 [2024-12-02 06:42:29,104 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/data/ee71717bb/dfb613c1a7f34a48ba6388f5716eaa32 [2024-12-02 06:42:29,107 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 06:42:29,108 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 06:42:29,110 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 06:42:29,110 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 06:42:29,115 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 06:42:29,116 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:42:29" (1/1) ... [2024-12-02 06:42:29,117 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4289704a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:42:29, skipping insertion in model container [2024-12-02 06:42:29,117 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:42:29" (1/1) ... [2024-12-02 06:42:29,184 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 06:42:29,798 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_c9130b72-d521-4b0b-8a00-723fde485d72/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] [2024-12-02 06:42:29,834 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:42:29,852 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 06:42:29,964 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] [2024-12-02 06:42:29,966 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] [2024-12-02 06:42:29,967 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] [2024-12-02 06:42:29,968 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] [2024-12-02 06:42:29,970 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("outb %b0, %w1": : "a" (value), "Nd" (port)); [3164] [2024-12-02 06:42:29,970 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("inb %w1, %b0": "=a" (value): "Nd" (port)); [3172] [2024-12-02 06:42:29,998 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] [2024-12-02 06:42:30,003 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] [2024-12-02 06:42:30,004 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] [2024-12-02 06:42:30,004 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] [2024-12-02 06:42:30,004 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] [2024-12-02 06:42:30,004 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] [2024-12-02 06:42:30,005 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] [2024-12-02 06:42:30,006 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] [2024-12-02 06:42:30,006 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] [2024-12-02 06:42:30,006 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] [2024-12-02 06:42:30,007 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] [2024-12-02 06:42:30,007 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] [2024-12-02 06:42:30,010 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] [2024-12-02 06:42:30,011 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] [2024-12-02 06:42:30,012 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] [2024-12-02 06:42:30,012 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] [2024-12-02 06:42:30,012 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] [2024-12-02 06:42:30,012 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] [2024-12-02 06:42:30,041 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_c9130b72-d521-4b0b-8a00-723fde485d72/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] [2024-12-02 06:42:30,050 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:42:30,085 INFO L204 MainTranslator]: Completed translation [2024-12-02 06:42:30,086 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:42:30 WrapperNode [2024-12-02 06:42:30,086 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 06:42:30,087 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 06:42:30,087 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 06:42:30,087 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 06:42:30,092 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:42:30" (1/1) ... [2024-12-02 06:42:30,117 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:42:30" (1/1) ... [2024-12-02 06:42:30,168 INFO L138 Inliner]: procedures = 96, calls = 407, calls flagged for inlining = 31, calls inlined = 28, statements flattened = 1254 [2024-12-02 06:42:30,168 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 06:42:30,169 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 06:42:30,169 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 06:42:30,169 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 06:42:30,180 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:42:30" (1/1) ... [2024-12-02 06:42:30,180 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:42:30" (1/1) ... [2024-12-02 06:42:30,192 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:42:30" (1/1) ... [2024-12-02 06:42:30,239 INFO L175 MemorySlicer]: Split 104 memory accesses to 11 slices as follows [2, 2, 3, 1, 0, 34, 29, 3, 13, 8, 9]. 33 percent of accesses are in the largest equivalence class. The 40 initializations are split as follows [2, 0, 1, 0, 0, 34, 0, 3, 0, 0, 0]. The 50 writes are split as follows [0, 1, 1, 1, 0, 0, 29, 0, 12, 4, 2]. [2024-12-02 06:42:30,240 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:42:30" (1/1) ... [2024-12-02 06:42:30,240 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:42:30" (1/1) ... [2024-12-02 06:42:30,273 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:42:30" (1/1) ... [2024-12-02 06:42:30,276 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:42:30" (1/1) ... [2024-12-02 06:42:30,286 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:42:30" (1/1) ... [2024-12-02 06:42:30,295 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:42:30" (1/1) ... [2024-12-02 06:42:30,300 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:42:30" (1/1) ... [2024-12-02 06:42:30,313 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 06:42:30,313 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 06:42:30,314 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 06:42:30,314 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 06:42:30,315 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:42:30" (1/1) ... [2024-12-02 06:42:30,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:42:30,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:42:30,349 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 06:42:30,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 06:42:30,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 06:42:30,379 INFO L130 BoogieDeclarations]: Found specification of procedure superio_inw [2024-12-02 06:42:30,379 INFO L138 BoogieDeclarations]: Found implementation of procedure superio_inw [2024-12-02 06:42:30,379 INFO L130 BoogieDeclarations]: Found specification of procedure superio_outw [2024-12-02 06:42:30,379 INFO L138 BoogieDeclarations]: Found implementation of procedure superio_outw [2024-12-02 06:42:30,379 INFO L130 BoogieDeclarations]: Found specification of procedure wdt_stop [2024-12-02 06:42:30,379 INFO L138 BoogieDeclarations]: Found implementation of procedure wdt_stop [2024-12-02 06:42:30,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-12-02 06:42:30,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-12-02 06:42:30,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-12-02 06:42:30,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-12-02 06:42:30,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-12-02 06:42:30,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-12-02 06:42:30,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2024-12-02 06:42:30,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2024-12-02 06:42:30,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#8 [2024-12-02 06:42:30,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#9 [2024-12-02 06:42:30,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#10 [2024-12-02 06:42:30,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-12-02 06:42:30,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-12-02 06:42:30,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-12-02 06:42:30,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-12-02 06:42:30,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-12-02 06:42:30,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-12-02 06:42:30,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-12-02 06:42:30,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-12-02 06:42:30,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2024-12-02 06:42:30,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2024-12-02 06:42:30,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#10 [2024-12-02 06:42:30,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-02 06:42:30,381 INFO L130 BoogieDeclarations]: Found specification of procedure wdt_write [2024-12-02 06:42:30,381 INFO L138 BoogieDeclarations]: Found implementation of procedure wdt_write [2024-12-02 06:42:30,381 INFO L130 BoogieDeclarations]: Found specification of procedure wdt_update_timeout [2024-12-02 06:42:30,381 INFO L138 BoogieDeclarations]: Found implementation of procedure wdt_update_timeout [2024-12-02 06:42:30,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-12-02 06:42:30,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-12-02 06:42:30,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-12-02 06:42:30,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-12-02 06:42:30,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-12-02 06:42:30,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-12-02 06:42:30,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2024-12-02 06:42:30,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2024-12-02 06:42:30,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#8 [2024-12-02 06:42:30,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#9 [2024-12-02 06:42:30,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#10 [2024-12-02 06:42:30,382 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2024-12-02 06:42:30,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2024-12-02 06:42:30,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 06:42:30,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 06:42:30,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-12-02 06:42:30,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-12-02 06:42:30,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-12-02 06:42:30,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-12-02 06:42:30,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-12-02 06:42:30,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-12-02 06:42:30,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-12-02 06:42:30,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-12-02 06:42:30,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-12-02 06:42:30,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2024-12-02 06:42:30,383 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2024-12-02 06:42:30,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-12-02 06:42:30,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-12-02 06:42:30,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-12-02 06:42:30,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-12-02 06:42:30,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-12-02 06:42:30,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-12-02 06:42:30,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-12-02 06:42:30,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-12-02 06:42:30,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-12-02 06:42:30,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2024-12-02 06:42:30,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#10 [2024-12-02 06:42:30,383 INFO L130 BoogieDeclarations]: Found specification of procedure wdt_round_time [2024-12-02 06:42:30,383 INFO L138 BoogieDeclarations]: Found implementation of procedure wdt_round_time [2024-12-02 06:42:30,383 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_reboot_notifier [2024-12-02 06:42:30,383 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_reboot_notifier [2024-12-02 06:42:30,383 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2024-12-02 06:42:30,384 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2024-12-02 06:42:30,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 06:42:30,384 INFO L130 BoogieDeclarations]: Found specification of procedure superio_exit [2024-12-02 06:42:30,384 INFO L138 BoogieDeclarations]: Found implementation of procedure superio_exit [2024-12-02 06:42:30,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-12-02 06:42:30,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-12-02 06:42:30,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-12-02 06:42:30,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-12-02 06:42:30,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-12-02 06:42:30,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-12-02 06:42:30,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-12-02 06:42:30,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2024-12-02 06:42:30,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2024-12-02 06:42:30,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#9 [2024-12-02 06:42:30,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#10 [2024-12-02 06:42:30,384 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2024-12-02 06:42:30,384 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2024-12-02 06:42:30,384 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2024-12-02 06:42:30,385 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2024-12-02 06:42:30,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 06:42:30,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 06:42:30,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-12-02 06:42:30,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-12-02 06:42:30,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-12-02 06:42:30,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-12-02 06:42:30,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-12-02 06:42:30,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-12-02 06:42:30,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-12-02 06:42:30,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-12-02 06:42:30,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-12-02 06:42:30,385 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2024-12-02 06:42:30,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2024-12-02 06:42:30,385 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2024-12-02 06:42:30,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2024-12-02 06:42:30,385 INFO L130 BoogieDeclarations]: Found specification of procedure wdt_start [2024-12-02 06:42:30,386 INFO L138 BoogieDeclarations]: Found implementation of procedure wdt_start [2024-12-02 06:42:30,386 INFO L130 BoogieDeclarations]: Found specification of procedure superio_select [2024-12-02 06:42:30,386 INFO L138 BoogieDeclarations]: Found implementation of procedure superio_select [2024-12-02 06:42:30,386 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2024-12-02 06:42:30,386 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2024-12-02 06:42:30,386 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2024-12-02 06:42:30,386 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2024-12-02 06:42:30,386 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2024-12-02 06:42:30,386 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2024-12-02 06:42:30,386 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2024-12-02 06:42:30,386 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2024-12-02 06:42:30,386 INFO L130 BoogieDeclarations]: Found specification of procedure superio_enter [2024-12-02 06:42:30,386 INFO L138 BoogieDeclarations]: Found implementation of procedure superio_enter [2024-12-02 06:42:30,386 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2024-12-02 06:42:30,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2024-12-02 06:42:30,386 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 06:42:30,386 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 06:42:30,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 06:42:30,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 06:42:30,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 06:42:30,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 06:42:30,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-02 06:42:30,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-12-02 06:42:30,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-12-02 06:42:30,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-12-02 06:42:30,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-12-02 06:42:30,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-12-02 06:42:30,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-12-02 06:42:30,387 INFO L130 BoogieDeclarations]: Found specification of procedure wdt_keepalive [2024-12-02 06:42:30,387 INFO L138 BoogieDeclarations]: Found implementation of procedure wdt_keepalive [2024-12-02 06:42:30,387 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2024-12-02 06:42:30,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2024-12-02 06:42:30,387 INFO L130 BoogieDeclarations]: Found specification of procedure superio_inb [2024-12-02 06:42:30,387 INFO L138 BoogieDeclarations]: Found implementation of procedure superio_inb [2024-12-02 06:42:30,387 INFO L130 BoogieDeclarations]: Found specification of procedure superio_outb [2024-12-02 06:42:30,388 INFO L138 BoogieDeclarations]: Found implementation of procedure superio_outb [2024-12-02 06:42:30,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 06:42:30,388 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2024-12-02 06:42:30,388 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2024-12-02 06:42:30,388 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2024-12-02 06:42:30,388 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2024-12-02 06:42:30,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 06:42:30,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 06:42:30,388 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2024-12-02 06:42:30,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2024-12-02 06:42:30,697 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 06:42:30,699 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 06:42:30,849 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2024-12-02 06:42:36,202 INFO L? ?]: Removed 473 outVars from TransFormulas that were not future-live. [2024-12-02 06:42:36,202 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 06:42:36,229 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 06:42:36,230 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-12-02 06:42:36,230 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:42:36 BoogieIcfgContainer [2024-12-02 06:42:36,230 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 06:42:36,234 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 06:42:36,234 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 06:42:36,239 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 06:42:36,239 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:42:29" (1/3) ... [2024-12-02 06:42:36,240 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50b56e23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:42:36, skipping insertion in model container [2024-12-02 06:42:36,240 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:42:30" (2/3) ... [2024-12-02 06:42:36,240 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50b56e23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:42:36, skipping insertion in model container [2024-12-02 06:42:36,240 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:42:36" (3/3) ... [2024-12-02 06:42:36,242 INFO L128 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--watchdog--it87_wdt.ko-entry_point.cil.out.i [2024-12-02 06:42:36,256 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 06:42:36,257 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. [2024-12-02 06:42:36,334 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 06:42:36,346 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;@5b09c53b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 06:42:36,346 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 06:42:36,353 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) [2024-12-02 06:42:36,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-12-02 06:42:36,372 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:42:36,373 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] [2024-12-02 06:42:36,374 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:42:36,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:42:36,379 INFO L85 PathProgramCache]: Analyzing trace with hash -837221207, now seen corresponding path program 1 times [2024-12-02 06:42:36,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:42:36,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510734424] [2024-12-02 06:42:36,386 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:42:36,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:42:36,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:42:37,144 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-12-02 06:42:37,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:42:37,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510734424] [2024-12-02 06:42:37,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510734424] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:42:37,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588317113] [2024-12-02 06:42:37,146 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:42:37,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:42:37,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:42:37,149 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:42:37,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 06:42:37,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:42:37,994 INFO L256 TraceCheckSpWp]: Trace formula consists of 1357 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 06:42:38,004 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:42:38,026 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-12-02 06:42:38,026 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:42:38,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588317113] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:42:38,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:42:38,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 06:42:38,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368281374] [2024-12-02 06:42:38,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:42:38,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 06:42:38,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:42:38,053 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 06:42:38,054 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 06:42:38,057 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) [2024-12-02 06:42:38,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:42:38,145 INFO L93 Difference]: Finished difference Result 1223 states and 1880 transitions. [2024-12-02 06:42:38,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 06:42:38,147 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 [2024-12-02 06:42:38,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:42:38,163 INFO L225 Difference]: With dead ends: 1223 [2024-12-02 06:42:38,163 INFO L226 Difference]: Without dead ends: 603 [2024-12-02 06:42:38,171 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 [2024-12-02 06:42:38,174 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 [2024-12-02 06:42:38,175 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] [2024-12-02 06:42:38,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2024-12-02 06:42:38,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 603. [2024-12-02 06:42:38,259 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) [2024-12-02 06:42:38,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 904 transitions. [2024-12-02 06:42:38,273 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 904 transitions. Word has length 137 [2024-12-02 06:42:38,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:42:38,274 INFO L471 AbstractCegarLoop]: Abstraction has 603 states and 904 transitions. [2024-12-02 06:42:38,274 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) [2024-12-02 06:42:38,274 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 904 transitions. [2024-12-02 06:42:38,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-12-02 06:42:38,280 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:42:38,280 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] [2024-12-02 06:42:38,290 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 06:42:38,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 06:42:38,481 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:42:38,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:42:38,482 INFO L85 PathProgramCache]: Analyzing trace with hash 116795809, now seen corresponding path program 1 times [2024-12-02 06:42:38,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:42:38,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879125180] [2024-12-02 06:42:38,482 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:42:38,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:42:38,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:42:39,036 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2024-12-02 06:42:39,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:42:39,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879125180] [2024-12-02 06:42:39,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879125180] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:42:39,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:42:39,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:42:39,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678493518] [2024-12-02 06:42:39,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:42:39,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:42:39,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:42:39,039 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:42:39,039 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:42:39,039 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) [2024-12-02 06:42:39,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:42:39,122 INFO L93 Difference]: Finished difference Result 614 states and 914 transitions. [2024-12-02 06:42:39,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:42:39,123 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 [2024-12-02 06:42:39,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:42:39,129 INFO L225 Difference]: With dead ends: 614 [2024-12-02 06:42:39,129 INFO L226 Difference]: Without dead ends: 609 [2024-12-02 06:42:39,130 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:42:39,131 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 [2024-12-02 06:42:39,131 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] [2024-12-02 06:42:39,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2024-12-02 06:42:39,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 604. [2024-12-02 06:42:39,174 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) [2024-12-02 06:42:39,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 905 transitions. [2024-12-02 06:42:39,182 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 905 transitions. Word has length 137 [2024-12-02 06:42:39,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:42:39,184 INFO L471 AbstractCegarLoop]: Abstraction has 604 states and 905 transitions. [2024-12-02 06:42:39,185 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) [2024-12-02 06:42:39,185 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 905 transitions. [2024-12-02 06:42:39,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-12-02 06:42:39,188 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:42:39,188 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] [2024-12-02 06:42:39,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 06:42:39,189 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:42:39,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:42:39,189 INFO L85 PathProgramCache]: Analyzing trace with hash 174054111, now seen corresponding path program 1 times [2024-12-02 06:42:39,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:42:39,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281742761] [2024-12-02 06:42:39,190 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:42:39,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:42:39,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:42:39,725 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2024-12-02 06:42:39,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:42:39,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281742761] [2024-12-02 06:42:39,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281742761] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:42:39,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:42:39,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:42:39,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193089643] [2024-12-02 06:42:39,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:42:39,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:42:39,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:42:39,728 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:42:39,728 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:42:39,728 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) [2024-12-02 06:42:39,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:42:39,825 INFO L93 Difference]: Finished difference Result 1180 states and 1772 transitions. [2024-12-02 06:42:39,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:42:39,825 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 [2024-12-02 06:42:39,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:42:39,836 INFO L225 Difference]: With dead ends: 1180 [2024-12-02 06:42:39,836 INFO L226 Difference]: Without dead ends: 1141 [2024-12-02 06:42:39,837 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:42:39,838 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 [2024-12-02 06:42:39,839 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] [2024-12-02 06:42:39,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1141 states. [2024-12-02 06:42:39,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1141 to 1140. [2024-12-02 06:42:39,923 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) [2024-12-02 06:42:39,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1140 states to 1140 states and 1707 transitions. [2024-12-02 06:42:39,937 INFO L78 Accepts]: Start accepts. Automaton has 1140 states and 1707 transitions. Word has length 137 [2024-12-02 06:42:39,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:42:39,937 INFO L471 AbstractCegarLoop]: Abstraction has 1140 states and 1707 transitions. [2024-12-02 06:42:39,937 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) [2024-12-02 06:42:39,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states and 1707 transitions. [2024-12-02 06:42:39,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-12-02 06:42:39,944 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:42:39,944 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] [2024-12-02 06:42:39,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 06:42:39,945 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:42:39,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:42:39,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1746415035, now seen corresponding path program 1 times [2024-12-02 06:42:39,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:42:39,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146308840] [2024-12-02 06:42:39,946 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:42:39,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:42:40,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:42:40,427 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2024-12-02 06:42:40,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:42:40,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146308840] [2024-12-02 06:42:40,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146308840] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:42:40,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:42:40,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:42:40,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182498785] [2024-12-02 06:42:40,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:42:40,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:42:40,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:42:40,429 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:42:40,430 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:42:40,430 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) [2024-12-02 06:42:40,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:42:40,607 INFO L93 Difference]: Finished difference Result 2753 states and 4102 transitions. [2024-12-02 06:42:40,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:42:40,608 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 [2024-12-02 06:42:40,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:42:40,621 INFO L225 Difference]: With dead ends: 2753 [2024-12-02 06:42:40,621 INFO L226 Difference]: Without dead ends: 1641 [2024-12-02 06:42:40,626 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:42:40,627 INFO L435 NwaCegarLoop]: 909 mSDtfsCounter, 439 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2024-12-02 06:42:40,628 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] [2024-12-02 06:42:40,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1641 states. [2024-12-02 06:42:40,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1641 to 1632. [2024-12-02 06:42:40,757 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) [2024-12-02 06:42:40,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1632 states to 1632 states and 2423 transitions. [2024-12-02 06:42:40,776 INFO L78 Accepts]: Start accepts. Automaton has 1632 states and 2423 transitions. Word has length 188 [2024-12-02 06:42:40,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:42:40,777 INFO L471 AbstractCegarLoop]: Abstraction has 1632 states and 2423 transitions. [2024-12-02 06:42:40,777 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) [2024-12-02 06:42:40,777 INFO L276 IsEmpty]: Start isEmpty. Operand 1632 states and 2423 transitions. [2024-12-02 06:42:40,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2024-12-02 06:42:40,790 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:42:40,790 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] [2024-12-02 06:42:40,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 06:42:40,791 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:42:40,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:42:40,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1013489833, now seen corresponding path program 1 times [2024-12-02 06:42:40,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:42:40,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569679292] [2024-12-02 06:42:40,792 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:42:40,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:42:41,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:42:42,078 INFO L134 CoverageAnalysis]: Checked inductivity of 629 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 616 trivial. 0 not checked. [2024-12-02 06:42:42,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:42:42,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569679292] [2024-12-02 06:42:42,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569679292] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:42:42,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:42:42,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:42:42,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974742909] [2024-12-02 06:42:42,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:42:42,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:42:42,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:42:42,081 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:42:42,082 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:42:42,082 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) [2024-12-02 06:42:46,100 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 06:42:47,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:42:47,495 INFO L93 Difference]: Finished difference Result 3538 states and 5330 transitions. [2024-12-02 06:42:47,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:42:47,496 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 [2024-12-02 06:42:47,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:42:47,516 INFO L225 Difference]: With dead ends: 3538 [2024-12-02 06:42:47,516 INFO L226 Difference]: Without dead ends: 1944 [2024-12-02 06:42:47,525 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 [2024-12-02 06:42:47,526 INFO L435 NwaCegarLoop]: 978 mSDtfsCounter, 911 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s 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 [2024-12-02 06:42:47,527 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] [2024-12-02 06:42:47,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1944 states. [2024-12-02 06:42:47,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1944 to 1912. [2024-12-02 06:42:47,695 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) [2024-12-02 06:42:47,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1912 states to 1912 states and 2893 transitions. [2024-12-02 06:42:47,714 INFO L78 Accepts]: Start accepts. Automaton has 1912 states and 2893 transitions. Word has length 390 [2024-12-02 06:42:47,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:42:47,714 INFO L471 AbstractCegarLoop]: Abstraction has 1912 states and 2893 transitions. [2024-12-02 06:42:47,715 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) [2024-12-02 06:42:47,715 INFO L276 IsEmpty]: Start isEmpty. Operand 1912 states and 2893 transitions. [2024-12-02 06:42:47,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2024-12-02 06:42:47,728 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:42:47,728 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] [2024-12-02 06:42:47,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 06:42:47,728 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:42:47,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:42:47,729 INFO L85 PathProgramCache]: Analyzing trace with hash 599239605, now seen corresponding path program 1 times [2024-12-02 06:42:47,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:42:47,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847210360] [2024-12-02 06:42:47,729 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:42:47,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:42:48,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:42:48,517 INFO L134 CoverageAnalysis]: Checked inductivity of 629 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 616 trivial. 0 not checked. [2024-12-02 06:42:48,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:42:48,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847210360] [2024-12-02 06:42:48,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847210360] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:42:48,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:42:48,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:42:48,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966544011] [2024-12-02 06:42:48,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:42:48,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:42:48,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:42:48,519 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:42:48,519 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:42:48,520 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) [2024-12-02 06:42:48,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:42:48,727 INFO L93 Difference]: Finished difference Result 3822 states and 5794 transitions. [2024-12-02 06:42:48,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:42:48,728 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 [2024-12-02 06:42:48,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:42:48,744 INFO L225 Difference]: With dead ends: 3822 [2024-12-02 06:42:48,744 INFO L226 Difference]: Without dead ends: 1948 [2024-12-02 06:42:48,753 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 [2024-12-02 06:42:48,754 INFO L435 NwaCegarLoop]: 891 mSDtfsCounter, 3 mSDsluCounter, 871 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2024-12-02 06:42:48,754 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] [2024-12-02 06:42:48,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1948 states. [2024-12-02 06:42:48,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1948 to 1948. [2024-12-02 06:42:48,882 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) [2024-12-02 06:42:48,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1948 states to 1948 states and 2925 transitions. [2024-12-02 06:42:48,899 INFO L78 Accepts]: Start accepts. Automaton has 1948 states and 2925 transitions. Word has length 403 [2024-12-02 06:42:48,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:42:48,900 INFO L471 AbstractCegarLoop]: Abstraction has 1948 states and 2925 transitions. [2024-12-02 06:42:48,900 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) [2024-12-02 06:42:48,901 INFO L276 IsEmpty]: Start isEmpty. Operand 1948 states and 2925 transitions. [2024-12-02 06:42:48,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2024-12-02 06:42:48,914 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:42:48,914 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] [2024-12-02 06:42:48,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 06:42:48,915 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:42:48,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:42:48,915 INFO L85 PathProgramCache]: Analyzing trace with hash 542374259, now seen corresponding path program 1 times [2024-12-02 06:42:48,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:42:48,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108362740] [2024-12-02 06:42:48,915 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:42:48,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:42:49,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:42:49,454 INFO L134 CoverageAnalysis]: Checked inductivity of 629 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 616 trivial. 0 not checked. [2024-12-02 06:42:49,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:42:49,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108362740] [2024-12-02 06:42:49,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108362740] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:42:49,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:42:49,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:42:49,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114644423] [2024-12-02 06:42:49,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:42:49,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:42:49,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:42:49,456 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:42:49,456 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:42:49,456 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) [2024-12-02 06:42:49,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:42:49,595 INFO L93 Difference]: Finished difference Result 3858 states and 5802 transitions. [2024-12-02 06:42:49,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:42:49,596 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 [2024-12-02 06:42:49,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:42:49,613 INFO L225 Difference]: With dead ends: 3858 [2024-12-02 06:42:49,613 INFO L226 Difference]: Without dead ends: 1948 [2024-12-02 06:42:49,622 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:42:49,622 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 [2024-12-02 06:42:49,623 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] [2024-12-02 06:42:49,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1948 states. [2024-12-02 06:42:49,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1948 to 1948. [2024-12-02 06:42:49,763 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) [2024-12-02 06:42:49,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1948 states to 1948 states and 2917 transitions. [2024-12-02 06:42:49,773 INFO L78 Accepts]: Start accepts. Automaton has 1948 states and 2917 transitions. Word has length 403 [2024-12-02 06:42:49,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:42:49,774 INFO L471 AbstractCegarLoop]: Abstraction has 1948 states and 2917 transitions. [2024-12-02 06:42:49,774 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) [2024-12-02 06:42:49,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1948 states and 2917 transitions. [2024-12-02 06:42:49,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2024-12-02 06:42:49,780 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:42:49,780 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] [2024-12-02 06:42:49,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 06:42:49,780 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:42:49,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:42:49,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1343053909, now seen corresponding path program 1 times [2024-12-02 06:42:49,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:42:49,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282038087] [2024-12-02 06:42:49,781 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:42:49,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:42:49,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:42:50,383 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2024-12-02 06:42:50,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:42:50,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282038087] [2024-12-02 06:42:50,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282038087] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:42:50,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184350354] [2024-12-02 06:42:50,384 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:42:50,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:42:50,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:42:50,387 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:42:50,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 06:42:51,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:42:51,354 INFO L256 TraceCheckSpWp]: Trace formula consists of 2410 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 06:42:51,368 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:42:52,050 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2024-12-02 06:42:52,050 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:42:52,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184350354] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:42:52,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:42:52,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-12-02 06:42:52,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905969428] [2024-12-02 06:42:52,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:42:52,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:42:52,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:42:52,052 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:42:52,052 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:42:52,053 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) [2024-12-02 06:42:52,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:42:52,273 INFO L93 Difference]: Finished difference Result 3858 states and 5786 transitions. [2024-12-02 06:42:52,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:42:52,274 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 [2024-12-02 06:42:52,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:42:52,294 INFO L225 Difference]: With dead ends: 3858 [2024-12-02 06:42:52,294 INFO L226 Difference]: Without dead ends: 1948 [2024-12-02 06:42:52,305 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 [2024-12-02 06:42:52,306 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 [2024-12-02 06:42:52,306 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] [2024-12-02 06:42:52,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1948 states. [2024-12-02 06:42:52,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1948 to 1948. [2024-12-02 06:42:52,497 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) [2024-12-02 06:42:52,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1948 states to 1948 states and 2915 transitions. [2024-12-02 06:42:52,514 INFO L78 Accepts]: Start accepts. Automaton has 1948 states and 2915 transitions. Word has length 411 [2024-12-02 06:42:52,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:42:52,515 INFO L471 AbstractCegarLoop]: Abstraction has 1948 states and 2915 transitions. [2024-12-02 06:42:52,515 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) [2024-12-02 06:42:52,515 INFO L276 IsEmpty]: Start isEmpty. Operand 1948 states and 2915 transitions. [2024-12-02 06:42:52,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2024-12-02 06:42:52,523 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:42:52,524 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] [2024-12-02 06:42:52,538 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 06:42:52,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:42:52,724 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:42:52,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:42:52,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1087329767, now seen corresponding path program 1 times [2024-12-02 06:42:52,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:42:52,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175489397] [2024-12-02 06:42:52,725 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:42:52,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:42:53,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:42:53,392 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 624 trivial. 0 not checked. [2024-12-02 06:42:53,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:42:53,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175489397] [2024-12-02 06:42:53,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175489397] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:42:53,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:42:53,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:42:53,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15213333] [2024-12-02 06:42:53,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:42:53,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:42:53,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:42:53,395 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:42:53,395 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:42:53,395 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) [2024-12-02 06:42:57,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 06:42:57,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:42:57,615 INFO L93 Difference]: Finished difference Result 4774 states and 7096 transitions. [2024-12-02 06:42:57,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:42:57,616 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 [2024-12-02 06:42:57,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:42:57,638 INFO L225 Difference]: With dead ends: 4774 [2024-12-02 06:42:57,638 INFO L226 Difference]: Without dead ends: 2782 [2024-12-02 06:42:57,647 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:42:57,648 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 [2024-12-02 06:42:57,648 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] [2024-12-02 06:42:57,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2782 states. [2024-12-02 06:42:57,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2782 to 2782. [2024-12-02 06:42:57,838 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) [2024-12-02 06:42:57,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2782 states to 2782 states and 4112 transitions. [2024-12-02 06:42:57,858 INFO L78 Accepts]: Start accepts. Automaton has 2782 states and 4112 transitions. Word has length 417 [2024-12-02 06:42:57,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:42:57,859 INFO L471 AbstractCegarLoop]: Abstraction has 2782 states and 4112 transitions. [2024-12-02 06:42:57,860 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) [2024-12-02 06:42:57,860 INFO L276 IsEmpty]: Start isEmpty. Operand 2782 states and 4112 transitions. [2024-12-02 06:42:57,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2024-12-02 06:42:57,870 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:42:57,871 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] [2024-12-02 06:42:57,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 06:42:57,871 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:42:57,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:42:57,872 INFO L85 PathProgramCache]: Analyzing trace with hash 501053545, now seen corresponding path program 1 times [2024-12-02 06:42:57,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:42:57,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823016605] [2024-12-02 06:42:57,872 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:42:57,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:42:58,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:42:58,462 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 625 trivial. 0 not checked. [2024-12-02 06:42:58,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:42:58,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823016605] [2024-12-02 06:42:58,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823016605] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:42:58,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:42:58,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:42:58,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162125530] [2024-12-02 06:42:58,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:42:58,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:42:58,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:42:58,464 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:42:58,465 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:42:58,465 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) [2024-12-02 06:42:58,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:42:58,692 INFO L93 Difference]: Finished difference Result 5535 states and 8186 transitions. [2024-12-02 06:42:58,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:42:58,693 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 [2024-12-02 06:42:58,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:42:58,714 INFO L225 Difference]: With dead ends: 5535 [2024-12-02 06:42:58,715 INFO L226 Difference]: Without dead ends: 2791 [2024-12-02 06:42:58,725 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 [2024-12-02 06:42:58,726 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 [2024-12-02 06:42:58,726 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] [2024-12-02 06:42:58,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2791 states. [2024-12-02 06:42:58,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2791 to 2786. [2024-12-02 06:42:58,940 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) [2024-12-02 06:42:58,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2786 states to 2786 states and 4116 transitions. [2024-12-02 06:42:58,958 INFO L78 Accepts]: Start accepts. Automaton has 2786 states and 4116 transitions. Word has length 417 [2024-12-02 06:42:58,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:42:58,959 INFO L471 AbstractCegarLoop]: Abstraction has 2786 states and 4116 transitions. [2024-12-02 06:42:58,960 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) [2024-12-02 06:42:58,960 INFO L276 IsEmpty]: Start isEmpty. Operand 2786 states and 4116 transitions. [2024-12-02 06:42:58,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2024-12-02 06:42:58,971 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:42:58,972 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] [2024-12-02 06:42:58,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 06:42:58,972 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:42:58,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:42:58,973 INFO L85 PathProgramCache]: Analyzing trace with hash 514986807, now seen corresponding path program 1 times [2024-12-02 06:42:58,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:42:58,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667775721] [2024-12-02 06:42:58,973 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:42:58,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:42:59,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:42:59,451 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2024-12-02 06:42:59,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:42:59,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667775721] [2024-12-02 06:42:59,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667775721] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:42:59,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:42:59,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:42:59,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709246188] [2024-12-02 06:42:59,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:42:59,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:42:59,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:42:59,453 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:42:59,453 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:42:59,453 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) [2024-12-02 06:43:03,468 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 [] [2024-12-02 06:43:03,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:43:03,599 INFO L93 Difference]: Finished difference Result 4100 states and 6018 transitions. [2024-12-02 06:43:03,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:43:03,600 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 [2024-12-02 06:43:03,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:43:03,612 INFO L225 Difference]: With dead ends: 4100 [2024-12-02 06:43:03,612 INFO L226 Difference]: Without dead ends: 1297 [2024-12-02 06:43:03,621 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:43:03,622 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 [2024-12-02 06:43:03,622 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] [2024-12-02 06:43:03,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1297 states. [2024-12-02 06:43:03,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1297 to 1293. [2024-12-02 06:43:03,711 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) [2024-12-02 06:43:03,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1293 states to 1293 states and 1849 transitions. [2024-12-02 06:43:03,721 INFO L78 Accepts]: Start accepts. Automaton has 1293 states and 1849 transitions. Word has length 427 [2024-12-02 06:43:03,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:43:03,722 INFO L471 AbstractCegarLoop]: Abstraction has 1293 states and 1849 transitions. [2024-12-02 06:43:03,723 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) [2024-12-02 06:43:03,723 INFO L276 IsEmpty]: Start isEmpty. Operand 1293 states and 1849 transitions. [2024-12-02 06:43:03,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2024-12-02 06:43:03,731 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:43:03,731 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] [2024-12-02 06:43:03,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 06:43:03,731 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:43:03,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:43:03,732 INFO L85 PathProgramCache]: Analyzing trace with hash -750527298, now seen corresponding path program 1 times [2024-12-02 06:43:03,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:43:03,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135170926] [2024-12-02 06:43:03,732 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:43:03,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:43:04,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:43:04,437 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 640 trivial. 0 not checked. [2024-12-02 06:43:04,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:43:04,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135170926] [2024-12-02 06:43:04,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135170926] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:43:04,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:43:04,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 06:43:04,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965115534] [2024-12-02 06:43:04,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:43:04,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 06:43:04,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:43:04,439 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 06:43:04,439 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:43:04,439 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) [2024-12-02 06:43:04,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:43:04,545 INFO L93 Difference]: Finished difference Result 2196 states and 3159 transitions. [2024-12-02 06:43:04,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:43:04,546 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 [2024-12-02 06:43:04,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:43:04,554 INFO L225 Difference]: With dead ends: 2196 [2024-12-02 06:43:04,554 INFO L226 Difference]: Without dead ends: 1301 [2024-12-02 06:43:04,557 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 [2024-12-02 06:43:04,557 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 [2024-12-02 06:43:04,558 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] [2024-12-02 06:43:04,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1301 states. [2024-12-02 06:43:04,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1301 to 1301. [2024-12-02 06:43:04,612 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) [2024-12-02 06:43:04,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1301 states to 1301 states and 1859 transitions. [2024-12-02 06:43:04,618 INFO L78 Accepts]: Start accepts. Automaton has 1301 states and 1859 transitions. Word has length 434 [2024-12-02 06:43:04,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:43:04,619 INFO L471 AbstractCegarLoop]: Abstraction has 1301 states and 1859 transitions. [2024-12-02 06:43:04,619 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) [2024-12-02 06:43:04,620 INFO L276 IsEmpty]: Start isEmpty. Operand 1301 states and 1859 transitions. [2024-12-02 06:43:04,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2024-12-02 06:43:04,624 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:43:04,625 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] [2024-12-02 06:43:04,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 06:43:04,625 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:43:04,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:43:04,625 INFO L85 PathProgramCache]: Analyzing trace with hash -778948170, now seen corresponding path program 1 times [2024-12-02 06:43:04,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:43:04,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888471733] [2024-12-02 06:43:04,626 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:43:04,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:43:04,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:43:05,276 INFO L134 CoverageAnalysis]: Checked inductivity of 657 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 649 trivial. 0 not checked. [2024-12-02 06:43:05,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:43:05,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888471733] [2024-12-02 06:43:05,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888471733] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:43:05,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:43:05,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 06:43:05,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418323536] [2024-12-02 06:43:05,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:43:05,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 06:43:05,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:43:05,279 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 06:43:05,279 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:43:05,279 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) [2024-12-02 06:43:09,293 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 [] [2024-12-02 06:43:09,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:43:09,527 INFO L93 Difference]: Finished difference Result 3111 states and 4479 transitions. [2024-12-02 06:43:09,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 06:43:09,527 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 [2024-12-02 06:43:09,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:43:09,540 INFO L225 Difference]: With dead ends: 3111 [2024-12-02 06:43:09,540 INFO L226 Difference]: Without dead ends: 2208 [2024-12-02 06:43:09,543 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 [2024-12-02 06:43:09,544 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 [2024-12-02 06:43:09,544 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] [2024-12-02 06:43:09,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2208 states. [2024-12-02 06:43:09,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2208 to 1305. [2024-12-02 06:43:09,639 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) [2024-12-02 06:43:09,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1305 states to 1305 states and 1863 transitions. [2024-12-02 06:43:09,649 INFO L78 Accepts]: Start accepts. Automaton has 1305 states and 1863 transitions. Word has length 445 [2024-12-02 06:43:09,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:43:09,650 INFO L471 AbstractCegarLoop]: Abstraction has 1305 states and 1863 transitions. [2024-12-02 06:43:09,651 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) [2024-12-02 06:43:09,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1305 states and 1863 transitions. [2024-12-02 06:43:09,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2024-12-02 06:43:09,658 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:43:09,659 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] [2024-12-02 06:43:09,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 06:43:09,659 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:43:09,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:43:09,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1149324532, now seen corresponding path program 1 times [2024-12-02 06:43:09,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:43:09,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426415973] [2024-12-02 06:43:09,660 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:43:09,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:43:09,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:43:10,141 INFO L134 CoverageAnalysis]: Checked inductivity of 657 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 643 trivial. 0 not checked. [2024-12-02 06:43:10,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:43:10,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426415973] [2024-12-02 06:43:10,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426415973] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:43:10,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956653941] [2024-12-02 06:43:10,142 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:43:10,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:43:10,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:43:10,144 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:43:10,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 06:43:11,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:43:11,390 INFO L256 TraceCheckSpWp]: Trace formula consists of 2524 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 06:43:11,401 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:43:11,441 INFO L134 CoverageAnalysis]: Checked inductivity of 657 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 504 trivial. 0 not checked. [2024-12-02 06:43:11,442 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:43:11,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956653941] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:43:11,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:43:11,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2024-12-02 06:43:11,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294367638] [2024-12-02 06:43:11,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:43:11,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 06:43:11,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:43:11,444 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 06:43:11,444 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:43:11,444 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) [2024-12-02 06:43:11,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:43:11,578 INFO L93 Difference]: Finished difference Result 2541 states and 3639 transitions. [2024-12-02 06:43:11,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:43:11,579 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 [2024-12-02 06:43:11,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:43:11,590 INFO L225 Difference]: With dead ends: 2541 [2024-12-02 06:43:11,591 INFO L226 Difference]: Without dead ends: 1313 [2024-12-02 06:43:11,595 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 [2024-12-02 06:43:11,596 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 [2024-12-02 06:43:11,596 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] [2024-12-02 06:43:11,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2024-12-02 06:43:11,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 1307. [2024-12-02 06:43:11,732 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) [2024-12-02 06:43:11,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1307 states to 1307 states and 1867 transitions. [2024-12-02 06:43:11,742 INFO L78 Accepts]: Start accepts. Automaton has 1307 states and 1867 transitions. Word has length 445 [2024-12-02 06:43:11,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:43:11,742 INFO L471 AbstractCegarLoop]: Abstraction has 1307 states and 1867 transitions. [2024-12-02 06:43:11,742 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) [2024-12-02 06:43:11,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1307 states and 1867 transitions. [2024-12-02 06:43:11,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2024-12-02 06:43:11,750 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:43:11,750 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] [2024-12-02 06:43:11,767 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 06:43:11,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:43:11,951 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:43:11,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:43:11,951 INFO L85 PathProgramCache]: Analyzing trace with hash 69898396, now seen corresponding path program 1 times [2024-12-02 06:43:11,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:43:11,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324204704] [2024-12-02 06:43:11,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:43:11,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:43:12,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:43:12,454 INFO L134 CoverageAnalysis]: Checked inductivity of 831 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 817 trivial. 0 not checked. [2024-12-02 06:43:12,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:43:12,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324204704] [2024-12-02 06:43:12,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324204704] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:43:12,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855893084] [2024-12-02 06:43:12,455 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:43:12,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:43:12,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:43:12,457 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:43:12,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 06:43:13,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:43:13,538 INFO L256 TraceCheckSpWp]: Trace formula consists of 2571 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 06:43:13,546 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:43:13,602 INFO L134 CoverageAnalysis]: Checked inductivity of 831 backedges. 393 proven. 0 refuted. 0 times theorem prover too weak. 438 trivial. 0 not checked. [2024-12-02 06:43:13,602 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:43:13,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855893084] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:43:13,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:43:13,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2024-12-02 06:43:13,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197474446] [2024-12-02 06:43:13,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:43:13,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 06:43:13,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:43:13,604 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 06:43:13,604 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:43:13,604 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) [2024-12-02 06:43:13,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:43:13,731 INFO L93 Difference]: Finished difference Result 2490 states and 3568 transitions. [2024-12-02 06:43:13,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:43:13,731 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 [2024-12-02 06:43:13,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:43:13,744 INFO L225 Difference]: With dead ends: 2490 [2024-12-02 06:43:13,744 INFO L226 Difference]: Without dead ends: 1313 [2024-12-02 06:43:13,748 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 [2024-12-02 06:43:13,749 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 [2024-12-02 06:43:13,749 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] [2024-12-02 06:43:13,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2024-12-02 06:43:13,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 1307. [2024-12-02 06:43:13,851 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) [2024-12-02 06:43:13,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1307 states to 1307 states and 1865 transitions. [2024-12-02 06:43:13,861 INFO L78 Accepts]: Start accepts. Automaton has 1307 states and 1865 transitions. Word has length 462 [2024-12-02 06:43:13,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:43:13,862 INFO L471 AbstractCegarLoop]: Abstraction has 1307 states and 1865 transitions. [2024-12-02 06:43:13,862 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) [2024-12-02 06:43:13,862 INFO L276 IsEmpty]: Start isEmpty. Operand 1307 states and 1865 transitions. [2024-12-02 06:43:13,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2024-12-02 06:43:13,871 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:43:13,871 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] [2024-12-02 06:43:13,888 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 06:43:14,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-12-02 06:43:14,072 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:43:14,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:43:14,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1499015466, now seen corresponding path program 2 times [2024-12-02 06:43:14,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:43:14,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795158646] [2024-12-02 06:43:14,073 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 06:43:14,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:43:14,492 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 06:43:14,493 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:43:15,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 8 proven. 26 refuted. 0 times theorem prover too weak. 1024 trivial. 0 not checked. [2024-12-02 06:43:15,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:43:15,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795158646] [2024-12-02 06:43:15,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795158646] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:43:15,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251152817] [2024-12-02 06:43:15,457 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 06:43:15,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:43:15,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:43:15,459 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:43:15,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 06:49:33,023 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 06:49:33,023 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:49:33,048 INFO L256 TraceCheckSpWp]: Trace formula consists of 2618 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-12-02 06:49:33,057 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:49:33,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 553 proven. 0 refuted. 0 times theorem prover too weak. 505 trivial. 0 not checked. [2024-12-02 06:49:33,787 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:49:33,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251152817] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:49:33,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:49:33,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2024-12-02 06:49:33,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976593018] [2024-12-02 06:49:33,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:49:33,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 06:49:33,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:49:33,790 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 06:49:33,790 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-12-02 06:49:33,790 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) [2024-12-02 06:49:34,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:49:34,401 INFO L93 Difference]: Finished difference Result 2602 states and 3696 transitions. [2024-12-02 06:49:34,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 06:49:34,402 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 [2024-12-02 06:49:34,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:49:34,414 INFO L225 Difference]: With dead ends: 2602 [2024-12-02 06:49:34,414 INFO L226 Difference]: Without dead ends: 1370 [2024-12-02 06:49:34,419 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 474 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2024-12-02 06:49:34,419 INFO L435 NwaCegarLoop]: 876 mSDtfsCounter, 181 mSDsluCounter, 5153 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 06:49:34,420 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 6029 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 06:49:34,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1370 states. [2024-12-02 06:49:34,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1370 to 1366. [2024-12-02 06:49:34,541 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) [2024-12-02 06:49:34,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1366 states to 1366 states and 1933 transitions. [2024-12-02 06:49:34,552 INFO L78 Accepts]: Start accepts. Automaton has 1366 states and 1933 transitions. Word has length 479 [2024-12-02 06:49:34,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:49:34,553 INFO L471 AbstractCegarLoop]: Abstraction has 1366 states and 1933 transitions. [2024-12-02 06:49:34,553 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) [2024-12-02 06:49:34,553 INFO L276 IsEmpty]: Start isEmpty. Operand 1366 states and 1933 transitions. [2024-12-02 06:49:34,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2024-12-02 06:49:34,561 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:49:34,561 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] [2024-12-02 06:49:34,594 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 06:49:34,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:49:34,762 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:49:34,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:49:34,763 INFO L85 PathProgramCache]: Analyzing trace with hash 2016128618, now seen corresponding path program 1 times [2024-12-02 06:49:34,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:49:34,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513839366] [2024-12-02 06:49:34,763 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:49:34,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:49:34,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:49:35,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1050 trivial. 0 not checked. [2024-12-02 06:49:35,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:49:35,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513839366] [2024-12-02 06:49:35,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513839366] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:49:35,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:49:35,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 06:49:35,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422246776] [2024-12-02 06:49:35,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:49:35,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 06:49:35,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:49:35,708 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 06:49:35,708 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:49:35,708 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) [2024-12-02 06:49:36,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:49:36,137 INFO L93 Difference]: Finished difference Result 3730 states and 5318 transitions. [2024-12-02 06:49:36,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 06:49:36,138 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 [2024-12-02 06:49:36,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:49:36,156 INFO L225 Difference]: With dead ends: 3730 [2024-12-02 06:49:36,156 INFO L226 Difference]: Without dead ends: 2600 [2024-12-02 06:49:36,161 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 [2024-12-02 06:49:36,162 INFO L435 NwaCegarLoop]: 855 mSDtfsCounter, 869 mSDsluCounter, 4211 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2024-12-02 06:49:36,162 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] [2024-12-02 06:49:36,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2600 states. [2024-12-02 06:49:36,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2600 to 1547. [2024-12-02 06:49:36,329 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) [2024-12-02 06:49:36,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1547 states to 1547 states and 2187 transitions. [2024-12-02 06:49:36,341 INFO L78 Accepts]: Start accepts. Automaton has 1547 states and 2187 transitions. Word has length 480 [2024-12-02 06:49:36,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:49:36,341 INFO L471 AbstractCegarLoop]: Abstraction has 1547 states and 2187 transitions. [2024-12-02 06:49:36,341 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) [2024-12-02 06:49:36,342 INFO L276 IsEmpty]: Start isEmpty. Operand 1547 states and 2187 transitions. [2024-12-02 06:49:36,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2024-12-02 06:49:36,350 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:49:36,350 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] [2024-12-02 06:49:36,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 06:49:36,351 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:49:36,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:49:36,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1532733992, now seen corresponding path program 1 times [2024-12-02 06:49:36,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:49:36,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8141342] [2024-12-02 06:49:36,351 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:49:36,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:49:36,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:49:37,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1050 trivial. 0 not checked. [2024-12-02 06:49:37,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:49:37,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8141342] [2024-12-02 06:49:37,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8141342] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:49:37,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:49:37,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 06:49:37,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162348931] [2024-12-02 06:49:37,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:49:37,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 06:49:37,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:49:37,396 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 06:49:37,396 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 06:49:37,397 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) [2024-12-02 06:49:37,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:49:37,860 INFO L93 Difference]: Finished difference Result 3726 states and 5313 transitions. [2024-12-02 06:49:37,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 06:49:37,861 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 [2024-12-02 06:49:37,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:49:37,880 INFO L225 Difference]: With dead ends: 3726 [2024-12-02 06:49:37,880 INFO L226 Difference]: Without dead ends: 2598 [2024-12-02 06:49:37,885 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 [2024-12-02 06:49:37,886 INFO L435 NwaCegarLoop]: 856 mSDtfsCounter, 862 mSDsluCounter, 4215 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:49:37,886 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [863 Valid, 5071 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:49:37,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2598 states. [2024-12-02 06:49:38,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2598 to 1545. [2024-12-02 06:49:38,057 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) [2024-12-02 06:49:38,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1545 states to 1545 states and 2184 transitions. [2024-12-02 06:49:38,065 INFO L78 Accepts]: Start accepts. Automaton has 1545 states and 2184 transitions. Word has length 480 [2024-12-02 06:49:38,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:49:38,065 INFO L471 AbstractCegarLoop]: Abstraction has 1545 states and 2184 transitions. [2024-12-02 06:49:38,065 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) [2024-12-02 06:49:38,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1545 states and 2184 transitions. [2024-12-02 06:49:38,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2024-12-02 06:49:38,070 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:49:38,070 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] [2024-12-02 06:49:38,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 06:49:38,071 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:49:38,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:49:38,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1429437798, now seen corresponding path program 1 times [2024-12-02 06:49:38,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:49:38,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74016515] [2024-12-02 06:49:38,071 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:49:38,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:49:38,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:49:38,804 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1050 trivial. 0 not checked. [2024-12-02 06:49:38,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:49:38,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74016515] [2024-12-02 06:49:38,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74016515] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:49:38,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:49:38,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 06:49:38,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521352502] [2024-12-02 06:49:38,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:49:38,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 06:49:38,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:49:38,805 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 06:49:38,805 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 06:49:38,805 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) [2024-12-02 06:49:39,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:49:39,149 INFO L93 Difference]: Finished difference Result 3714 states and 5298 transitions. [2024-12-02 06:49:39,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 06:49:39,149 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 [2024-12-02 06:49:39,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:49:39,160 INFO L225 Difference]: With dead ends: 3714 [2024-12-02 06:49:39,160 INFO L226 Difference]: Without dead ends: 2588 [2024-12-02 06:49:39,163 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 [2024-12-02 06:49:39,163 INFO L435 NwaCegarLoop]: 855 mSDtfsCounter, 861 mSDsluCounter, 4206 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:49:39,163 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [862 Valid, 5061 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:49:39,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2588 states. [2024-12-02 06:49:39,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2588 to 1543. [2024-12-02 06:49:39,336 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) [2024-12-02 06:49:39,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 2181 transitions. [2024-12-02 06:49:39,343 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 2181 transitions. Word has length 480 [2024-12-02 06:49:39,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:49:39,344 INFO L471 AbstractCegarLoop]: Abstraction has 1543 states and 2181 transitions. [2024-12-02 06:49:39,344 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) [2024-12-02 06:49:39,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 2181 transitions. [2024-12-02 06:49:39,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2024-12-02 06:49:39,352 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:49:39,352 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] [2024-12-02 06:49:39,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 06:49:39,352 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:49:39,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:49:39,353 INFO L85 PathProgramCache]: Analyzing trace with hash -188544988, now seen corresponding path program 1 times [2024-12-02 06:49:39,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:49:39,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736259706] [2024-12-02 06:49:39,353 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:49:39,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:49:39,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:49:40,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1050 trivial. 0 not checked. [2024-12-02 06:49:40,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:49:40,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736259706] [2024-12-02 06:49:40,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736259706] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:49:40,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:49:40,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 06:49:40,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916555854] [2024-12-02 06:49:40,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:49:40,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 06:49:40,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:49:40,317 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 06:49:40,318 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 06:49:40,318 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) [2024-12-02 06:49:40,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:49:40,789 INFO L93 Difference]: Finished difference Result 3719 states and 5304 transitions. [2024-12-02 06:49:40,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 06:49:40,790 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 [2024-12-02 06:49:40,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:49:40,808 INFO L225 Difference]: With dead ends: 3719 [2024-12-02 06:49:40,809 INFO L226 Difference]: Without dead ends: 2595 [2024-12-02 06:49:40,814 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 [2024-12-02 06:49:40,815 INFO L435 NwaCegarLoop]: 855 mSDtfsCounter, 861 mSDsluCounter, 4211 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:49:40,815 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [862 Valid, 5066 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:49:40,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2595 states. [2024-12-02 06:49:41,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2595 to 1543. [2024-12-02 06:49:41,146 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) [2024-12-02 06:49:41,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 2180 transitions. [2024-12-02 06:49:41,158 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 2180 transitions. Word has length 480 [2024-12-02 06:49:41,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:49:41,158 INFO L471 AbstractCegarLoop]: Abstraction has 1543 states and 2180 transitions. [2024-12-02 06:49:41,159 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) [2024-12-02 06:49:41,159 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 2180 transitions. [2024-12-02 06:49:41,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2024-12-02 06:49:41,166 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:49:41,167 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] [2024-12-02 06:49:41,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 06:49:41,167 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:49:41,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:49:41,167 INFO L85 PathProgramCache]: Analyzing trace with hash 194128482, now seen corresponding path program 1 times [2024-12-02 06:49:41,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:49:41,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919777929] [2024-12-02 06:49:41,168 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:49:41,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:49:41,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:49:41,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1050 trivial. 0 not checked. [2024-12-02 06:49:41,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:49:41,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919777929] [2024-12-02 06:49:41,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919777929] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:49:41,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:49:41,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 06:49:41,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411550584] [2024-12-02 06:49:41,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:49:41,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 06:49:41,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:49:41,816 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 06:49:41,816 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 06:49:41,816 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) [2024-12-02 06:49:42,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:49:42,097 INFO L93 Difference]: Finished difference Result 2604 states and 3692 transitions. [2024-12-02 06:49:42,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 06:49:42,098 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 [2024-12-02 06:49:42,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:49:42,109 INFO L225 Difference]: With dead ends: 2604 [2024-12-02 06:49:42,109 INFO L226 Difference]: Without dead ends: 1370 [2024-12-02 06:49:42,113 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-12-02 06:49:42,114 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, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:49:42,114 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 5055 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:49:42,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1370 states. [2024-12-02 06:49:42,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1370 to 1366. [2024-12-02 06:49:42,231 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) [2024-12-02 06:49:42,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1366 states to 1366 states and 1932 transitions. [2024-12-02 06:49:42,237 INFO L78 Accepts]: Start accepts. Automaton has 1366 states and 1932 transitions. Word has length 480 [2024-12-02 06:49:42,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:49:42,238 INFO L471 AbstractCegarLoop]: Abstraction has 1366 states and 1932 transitions. [2024-12-02 06:49:42,238 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) [2024-12-02 06:49:42,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1366 states and 1932 transitions. [2024-12-02 06:49:42,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2024-12-02 06:49:42,242 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:49:42,242 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] [2024-12-02 06:49:42,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 06:49:42,242 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:49:42,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:49:42,243 INFO L85 PathProgramCache]: Analyzing trace with hash 2105485767, now seen corresponding path program 1 times [2024-12-02 06:49:42,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:49:42,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283254858] [2024-12-02 06:49:42,243 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:49:42,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:49:42,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:49:42,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 8 proven. 26 refuted. 0 times theorem prover too weak. 1024 trivial. 0 not checked. [2024-12-02 06:49:42,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:49:42,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283254858] [2024-12-02 06:49:42,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283254858] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:49:42,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661756173] [2024-12-02 06:49:42,988 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:49:42,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:49:42,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:49:42,989 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:49:42,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 06:49:44,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:49:44,092 INFO L256 TraceCheckSpWp]: Trace formula consists of 2623 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-12-02 06:49:44,099 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:49:44,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 911 trivial. 0 not checked. [2024-12-02 06:49:44,135 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:49:44,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661756173] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:49:44,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:49:44,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 6 [2024-12-02 06:49:44,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42654706] [2024-12-02 06:49:44,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:49:44,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 06:49:44,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:49:44,136 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 06:49:44,137 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:49:44,137 INFO L87 Difference]: Start difference. First operand 1366 states and 1932 transitions. Second operand has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 5 states have internal predecessors, (182), 2 states have call successors, (60), 2 states have call predecessors, (60), 3 states have return successors, (59), 3 states have call predecessors, (59), 2 states have call successors, (59) [2024-12-02 06:49:44,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:49:44,263 INFO L93 Difference]: Finished difference Result 2719 states and 3894 transitions. [2024-12-02 06:49:44,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 06:49:44,264 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 5 states have internal predecessors, (182), 2 states have call successors, (60), 2 states have call predecessors, (60), 3 states have return successors, (59), 3 states have call predecessors, (59), 2 states have call successors, (59) Word has length 481 [2024-12-02 06:49:44,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:49:44,273 INFO L225 Difference]: With dead ends: 2719 [2024-12-02 06:49:44,273 INFO L226 Difference]: Without dead ends: 1389 [2024-12-02 06:49:44,276 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 [2024-12-02 06:49:44,278 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 [2024-12-02 06:49:44,278 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] [2024-12-02 06:49:44,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2024-12-02 06:49:44,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 1389. [2024-12-02 06:49:44,381 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) [2024-12-02 06:49:44,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1389 states to 1389 states and 1958 transitions. [2024-12-02 06:49:44,389 INFO L78 Accepts]: Start accepts. Automaton has 1389 states and 1958 transitions. Word has length 481 [2024-12-02 06:49:44,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:49:44,389 INFO L471 AbstractCegarLoop]: Abstraction has 1389 states and 1958 transitions. [2024-12-02 06:49:44,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.333333333333332) internal successors, (182), 5 states have internal predecessors, (182), 2 states have call successors, (60), 2 states have call predecessors, (60), 3 states have return successors, (59), 3 states have call predecessors, (59), 2 states have call successors, (59) [2024-12-02 06:49:44,390 INFO L276 IsEmpty]: Start isEmpty. Operand 1389 states and 1958 transitions. [2024-12-02 06:49:44,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2024-12-02 06:49:44,394 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:49:44,394 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] [2024-12-02 06:49:44,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-12-02 06:49:44,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:49:44,595 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:49:44,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:49:44,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1261841611, now seen corresponding path program 1 times [2024-12-02 06:49:44,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:49:44,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596734421] [2024-12-02 06:49:44,596 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:49:44,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:49:44,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:49:45,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1112 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1092 trivial. 0 not checked. [2024-12-02 06:49:45,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:49:45,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596734421] [2024-12-02 06:49:45,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596734421] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:49:45,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660576728] [2024-12-02 06:49:45,417 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:49:45,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:49:45,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:49:45,419 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:49:45,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 06:49:47,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:49:47,036 INFO L256 TraceCheckSpWp]: Trace formula consists of 2675 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-12-02 06:49:47,041 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:49:47,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1112 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 943 trivial. 0 not checked. [2024-12-02 06:49:47,072 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:49:47,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660576728] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:49:47,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:49:47,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 06:49:47,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723588894] [2024-12-02 06:49:47,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:49:47,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:49:47,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:49:47,073 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:49:47,073 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:49:47,073 INFO L87 Difference]: Start difference. First operand 1389 states and 1958 transitions. Second operand has 4 states, 4 states have (on average 44.25) internal successors, (177), 4 states have internal predecessors, (177), 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) [2024-12-02 06:49:47,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:49:47,197 INFO L93 Difference]: Finished difference Result 2760 states and 3899 transitions. [2024-12-02 06:49:47,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:49:47,198 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.25) internal successors, (177), 4 states have internal predecessors, (177), 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 [2024-12-02 06:49:47,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:49:47,203 INFO L225 Difference]: With dead ends: 2760 [2024-12-02 06:49:47,204 INFO L226 Difference]: Without dead ends: 1390 [2024-12-02 06:49:47,206 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 [2024-12-02 06:49:47,206 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 [2024-12-02 06:49:47,206 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] [2024-12-02 06:49:47,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1390 states. [2024-12-02 06:49:47,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1390 to 1390. [2024-12-02 06:49:47,311 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) [2024-12-02 06:49:47,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 1959 transitions. [2024-12-02 06:49:47,318 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 1959 transitions. Word has length 493 [2024-12-02 06:49:47,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:49:47,318 INFO L471 AbstractCegarLoop]: Abstraction has 1390 states and 1959 transitions. [2024-12-02 06:49:47,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.25) internal successors, (177), 4 states have internal predecessors, (177), 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) [2024-12-02 06:49:47,318 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 1959 transitions. [2024-12-02 06:49:47,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2024-12-02 06:49:47,321 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:49:47,322 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] [2024-12-02 06:49:47,333 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 06:49:47,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:49:47,522 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:49:47,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:49:47,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1041355438, now seen corresponding path program 1 times [2024-12-02 06:49:47,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:49:47,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828340126] [2024-12-02 06:49:47,523 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:49:47,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:49:47,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:49:48,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1163 trivial. 0 not checked. [2024-12-02 06:49:48,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:49:48,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828340126] [2024-12-02 06:49:48,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828340126] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:49:48,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656565504] [2024-12-02 06:49:48,263 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:49:48,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:49:48,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:49:48,265 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:49:48,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 06:49:49,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:49:49,393 INFO L256 TraceCheckSpWp]: Trace formula consists of 2791 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-12-02 06:49:49,399 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:49:49,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 1134 trivial. 0 not checked. [2024-12-02 06:49:49,563 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:49:49,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656565504] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:49:49,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:49:49,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 13 [2024-12-02 06:49:49,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997592960] [2024-12-02 06:49:49,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:49:49,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 06:49:49,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:49:49,565 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 06:49:49,565 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-12-02 06:49:49,565 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) [2024-12-02 06:49:49,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:49:49,847 INFO L93 Difference]: Finished difference Result 2741 states and 3911 transitions. [2024-12-02 06:49:49,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 06:49:49,848 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 [2024-12-02 06:49:49,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:49:49,861 INFO L225 Difference]: With dead ends: 2741 [2024-12-02 06:49:49,861 INFO L226 Difference]: Without dead ends: 1390 [2024-12-02 06:49:49,865 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 498 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-12-02 06:49:49,866 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 [2024-12-02 06:49:49,866 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] [2024-12-02 06:49:49,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1390 states. [2024-12-02 06:49:50,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1390 to 1390. [2024-12-02 06:49:50,029 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) [2024-12-02 06:49:50,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 1955 transitions. [2024-12-02 06:49:50,039 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 1955 transitions. Word has length 505 [2024-12-02 06:49:50,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:49:50,040 INFO L471 AbstractCegarLoop]: Abstraction has 1390 states and 1955 transitions. [2024-12-02 06:49:50,040 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) [2024-12-02 06:49:50,040 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 1955 transitions. [2024-12-02 06:49:50,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2024-12-02 06:49:50,046 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:49:50,046 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] [2024-12-02 06:49:50,057 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 06:49:50,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:49:50,247 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:49:50,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:49:50,247 INFO L85 PathProgramCache]: Analyzing trace with hash 326245403, now seen corresponding path program 2 times [2024-12-02 06:49:50,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:49:50,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634824021] [2024-12-02 06:49:50,248 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 06:49:50,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:49:50,612 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 06:49:50,612 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:49:51,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1163 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1127 trivial. 0 not checked. [2024-12-02 06:49:51,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:49:51,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634824021] [2024-12-02 06:49:51,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634824021] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:49:51,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068247647] [2024-12-02 06:49:51,237 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 06:49:51,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:49:51,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:49:51,239 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:49:51,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 06:52:56,635 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 06:52:56,636 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:52:56,657 INFO L256 TraceCheckSpWp]: Trace formula consists of 2765 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-12-02 06:52:56,665 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:52:56,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1163 backedges. 184 proven. 1 refuted. 0 times theorem prover too weak. 978 trivial. 0 not checked. [2024-12-02 06:52:56,709 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:52:57,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1163 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1127 trivial. 0 not checked. [2024-12-02 06:52:57,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068247647] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:52:57,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:52:57,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-12-02 06:52:57,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302054037] [2024-12-02 06:52:57,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:52:57,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 06:52:57,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:52:57,142 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 06:52:57,142 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2024-12-02 06:52:57,142 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) [2024-12-02 06:52:57,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:52:57,407 INFO L93 Difference]: Finished difference Result 2772 states and 3911 transitions. [2024-12-02 06:52:57,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 06:52:57,407 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 [2024-12-02 06:52:57,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:52:57,418 INFO L225 Difference]: With dead ends: 2772 [2024-12-02 06:52:57,418 INFO L226 Difference]: Without dead ends: 1401 [2024-12-02 06:52:57,422 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1005 GetRequests, 993 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2024-12-02 06:52:57,423 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 [2024-12-02 06:52:57,423 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] [2024-12-02 06:52:57,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1401 states. [2024-12-02 06:52:57,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1401 to 1400. [2024-12-02 06:52:57,562 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) [2024-12-02 06:52:57,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 1967 transitions. [2024-12-02 06:52:57,569 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 1967 transitions. Word has length 499 [2024-12-02 06:52:57,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:52:57,569 INFO L471 AbstractCegarLoop]: Abstraction has 1400 states and 1967 transitions. [2024-12-02 06:52:57,570 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) [2024-12-02 06:52:57,570 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 1967 transitions. [2024-12-02 06:52:57,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2024-12-02 06:52:57,573 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:52:57,573 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] [2024-12-02 06:52:57,596 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 06:52:57,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-12-02 06:52:57,774 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:52:57,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:52:57,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1203356235, now seen corresponding path program 3 times [2024-12-02 06:52:57,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:52:57,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216395299] [2024-12-02 06:52:57,775 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 06:52:57,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:52:58,011 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-12-02 06:52:58,011 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:52:58,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1422 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1414 trivial. 0 not checked. [2024-12-02 06:52:58,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:52:58,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216395299] [2024-12-02 06:52:58,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216395299] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:52:58,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:52:58,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 06:52:58,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076600410] [2024-12-02 06:52:58,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:52:58,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 06:52:58,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:52:58,585 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 06:52:58,586 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:52:58,586 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) [2024-12-02 06:52:59,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:52:59,037 INFO L93 Difference]: Finished difference Result 1437 states and 2030 transitions. [2024-12-02 06:52:59,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 06:52:59,037 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 [2024-12-02 06:52:59,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:52:59,044 INFO L225 Difference]: With dead ends: 1437 [2024-12-02 06:52:59,044 INFO L226 Difference]: Without dead ends: 1427 [2024-12-02 06:52:59,045 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-12-02 06:52:59,045 INFO L435 NwaCegarLoop]: 847 mSDtfsCounter, 6 mSDsluCounter, 4177 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 06:52:59,046 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 5024 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 06:52:59,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1427 states. [2024-12-02 06:52:59,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1427 to 1405. [2024-12-02 06:52:59,212 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) [2024-12-02 06:52:59,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1405 states to 1405 states and 1975 transitions. [2024-12-02 06:52:59,222 INFO L78 Accepts]: Start accepts. Automaton has 1405 states and 1975 transitions. Word has length 513 [2024-12-02 06:52:59,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:52:59,223 INFO L471 AbstractCegarLoop]: Abstraction has 1405 states and 1975 transitions. [2024-12-02 06:52:59,223 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) [2024-12-02 06:52:59,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1405 states and 1975 transitions. [2024-12-02 06:52:59,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2024-12-02 06:52:59,229 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:52:59,230 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] [2024-12-02 06:52:59,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-12-02 06:52:59,230 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:52:59,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:52:59,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1758325728, now seen corresponding path program 1 times [2024-12-02 06:52:59,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:52:59,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293112257] [2024-12-02 06:52:59,231 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:52:59,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:52:59,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:53:00,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1422 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 1292 trivial. 0 not checked. [2024-12-02 06:53:00,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:53:00,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293112257] [2024-12-02 06:53:00,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293112257] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:53:00,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219920008] [2024-12-02 06:53:00,265 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:53:00,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:53:00,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:53:00,267 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:53:00,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 06:53:01,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:53:01,516 INFO L256 TraceCheckSpWp]: Trace formula consists of 2975 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-12-02 06:53:01,525 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:53:01,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1422 backedges. 373 proven. 50 refuted. 0 times theorem prover too weak. 999 trivial. 0 not checked. [2024-12-02 06:53:01,710 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:53:02,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1422 backedges. 36 proven. 51 refuted. 0 times theorem prover too weak. 1335 trivial. 0 not checked. [2024-12-02 06:53:02,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219920008] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:53:02,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:53:02,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 6] total 21 [2024-12-02 06:53:02,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373277293] [2024-12-02 06:53:02,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:53:02,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-12-02 06:53:02,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:53:02,249 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-12-02 06:53:02,249 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2024-12-02 06:53:02,249 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) [2024-12-02 06:53:02,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:53:02,855 INFO L93 Difference]: Finished difference Result 2801 states and 3945 transitions. [2024-12-02 06:53:02,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 06:53:02,856 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 [2024-12-02 06:53:02,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:53:02,863 INFO L225 Difference]: With dead ends: 2801 [2024-12-02 06:53:02,863 INFO L226 Difference]: Without dead ends: 1408 [2024-12-02 06:53:02,866 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1046 GetRequests, 1015 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=193, Invalid=863, Unknown=0, NotChecked=0, Total=1056 [2024-12-02 06:53:02,866 INFO L435 NwaCegarLoop]: 858 mSDtfsCounter, 16 mSDsluCounter, 10246 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 06:53:02,866 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 11104 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 06:53:02,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1408 states. [2024-12-02 06:53:02,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1408 to 1408. [2024-12-02 06:53:02,954 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) [2024-12-02 06:53:02,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1408 states to 1408 states and 1975 transitions. [2024-12-02 06:53:02,961 INFO L78 Accepts]: Start accepts. Automaton has 1408 states and 1975 transitions. Word has length 514 [2024-12-02 06:53:02,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:53:02,961 INFO L471 AbstractCegarLoop]: Abstraction has 1408 states and 1975 transitions. [2024-12-02 06:53:02,961 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) [2024-12-02 06:53:02,961 INFO L276 IsEmpty]: Start isEmpty. Operand 1408 states and 1975 transitions. [2024-12-02 06:53:02,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2024-12-02 06:53:02,965 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:53:02,965 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] [2024-12-02 06:53:02,980 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 06:53:03,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-12-02 06:53:03,165 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:53:03,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:53:03,166 INFO L85 PathProgramCache]: Analyzing trace with hash -635343750, now seen corresponding path program 2 times [2024-12-02 06:53:03,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:53:03,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208005663] [2024-12-02 06:53:03,166 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 06:53:03,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:53:03,461 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 06:53:03,461 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:53:04,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1658 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 1460 trivial. 0 not checked. [2024-12-02 06:53:04,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:53:04,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208005663] [2024-12-02 06:53:04,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208005663] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:53:04,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674459011] [2024-12-02 06:53:04,196 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 06:53:04,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:53:04,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:53:04,198 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:53:04,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9130b72-d521-4b0b-8a00-723fde485d72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process