./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-32_7a-drivers--input--serio--serio_raw.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--input--serio--serio_raw.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 93c428ff6f0565c9de954639ae23000ff5693477bac9f291339fc811e0689668 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 19:35:27,688 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 19:35:27,741 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-03-08 19:35:27,749 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 19:35:27,750 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 19:35:27,770 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 19:35:27,771 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 19:35:27,771 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 19:35:27,771 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 19:35:27,771 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 19:35:27,771 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 19:35:27,771 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 19:35:27,772 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 19:35:27,773 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 19:35:27,773 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 19:35:27,774 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 19:35:27,774 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 19:35:27,774 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 19:35:27,774 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 19:35:27,774 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 19:35:27,774 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 19:35:27,774 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 19:35:27,774 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 19:35:27,775 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 19:35:27,775 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 19:35:27,775 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 19:35:27,775 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 19:35:27,775 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 19:35:27,775 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 19:35:27,775 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 19:35:27,776 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 19:35:27,776 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 19:35:27,776 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 19:35:27,776 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 19:35:27,776 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 19:35:27,776 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 19:35:27,776 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 19:35:27,776 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 19:35:27,776 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 19:35:27,777 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 19:35:27,777 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> 93c428ff6f0565c9de954639ae23000ff5693477bac9f291339fc811e0689668 [2025-03-08 19:35:28,052 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 19:35:28,060 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 19:35:28,062 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 19:35:28,064 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 19:35:28,064 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 19:35:28,065 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--input--serio--serio_raw.ko-entry_point.cil.out.i [2025-03-08 19:35:29,212 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/040e7b7f6/c429f95755b7458dabd5bd6d10fd41da/FLAG6aab1b39f [2025-03-08 19:35:29,606 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 19:35:29,607 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--input--serio--serio_raw.ko-entry_point.cil.out.i [2025-03-08 19:35:29,631 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/040e7b7f6/c429f95755b7458dabd5bd6d10fd41da/FLAG6aab1b39f [2025-03-08 19:35:29,795 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/040e7b7f6/c429f95755b7458dabd5bd6d10fd41da [2025-03-08 19:35:29,797 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 19:35:29,798 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 19:35:29,799 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 19:35:29,799 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 19:35:29,802 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 19:35:29,803 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 07:35:29" (1/1) ... [2025-03-08 19:35:29,806 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7605917f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:35:29, skipping insertion in model container [2025-03-08 19:35:29,806 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 07:35:29" (1/1) ... [2025-03-08 19:35:29,867 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 19:35:30,624 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--input--serio--serio_raw.ko-entry_point.cil.out.i[129978,129991] [2025-03-08 19:35:30,716 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 19:35:30,737 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 19:35:30,800 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; subl %2, %0; sete %1": "+m" (v->counter), "=qm" (c): "er" (i): "memory"); [3226-3227] [2025-03-08 19:35:30,802 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; xaddb %b0, %1\n": "+q" (__ret), "+m" (v->counter): : "memory", "cc"); [3238-3239] [2025-03-08 19:35:30,803 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; xaddw %w0, %1\n": "+r" (__ret), "+m" (v->counter): : "memory", "cc"); [3242-3243] [2025-03-08 19:35:30,803 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; xaddl %0, %1\n": "+r" (__ret), "+m" (v->counter): : "memory", "cc"); [3246-3247] [2025-03-08 19:35:30,803 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; xaddq %q0, %1\n": "+r" (__ret), "+m" (v->counter): : "memory", "cc"); [3250-3251] [2025-03-08 19:35:30,862 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_1": "=a" (__ret_pu): "0" (__pu_val), "c" (tmp): "ebx"); [3767] [2025-03-08 19:35:30,866 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_2": "=a" (__ret_pu): "0" (__pu_val), "c" (tmp___0): "ebx"); [3772] [2025-03-08 19:35:30,866 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_4": "=a" (__ret_pu): "0" (__pu_val), "c" (tmp___1): "ebx"); [3777] [2025-03-08 19:35:30,867 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_8": "=a" (__ret_pu): "0" (__pu_val), "c" (tmp___2): "ebx"); [3782] [2025-03-08 19:35:30,867 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_X": "=a" (__ret_pu): "0" (__pu_val), "c" (tmp___3): "ebx"); [3787] [2025-03-08 19:35:30,872 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __get_user_%P3": "=a" (__ret_gu), "=r" (__val_gu): "0" (tmp), "i" (1UL)); [3886-3887] [2025-03-08 19:35:30,909 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--input--serio--serio_raw.ko-entry_point.cil.out.i[129978,129991] [2025-03-08 19:35:30,929 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 19:35:30,976 INFO L204 MainTranslator]: Completed translation [2025-03-08 19:35:30,978 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:35:30 WrapperNode [2025-03-08 19:35:30,978 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 19:35:30,979 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 19:35:30,979 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 19:35:30,979 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 19:35:30,984 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:35:30" (1/1) ... [2025-03-08 19:35:31,015 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:35:30" (1/1) ... [2025-03-08 19:35:31,067 INFO L138 Inliner]: procedures = 190, calls = 552, calls flagged for inlining = 74, calls inlined = 69, statements flattened = 1678 [2025-03-08 19:35:31,068 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 19:35:31,069 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 19:35:31,069 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 19:35:31,069 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 19:35:31,076 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:35:30" (1/1) ... [2025-03-08 19:35:31,076 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:35:30" (1/1) ... [2025-03-08 19:35:31,085 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:35:30" (1/1) ... [2025-03-08 19:35:31,213 INFO L175 MemorySlicer]: Split 205 memory accesses to 7 slices as follows [2, 122, 23, 13, 14, 4, 27]. 60 percent of accesses are in the largest equivalence class. The 4 initializations are split as follows [2, 2, 0, 0, 0, 0, 0]. The 128 writes are split as follows [0, 62, 23, 2, 12, 2, 27]. [2025-03-08 19:35:31,213 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:35:30" (1/1) ... [2025-03-08 19:35:31,214 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:35:30" (1/1) ... [2025-03-08 19:35:31,238 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:35:30" (1/1) ... [2025-03-08 19:35:31,241 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:35:30" (1/1) ... [2025-03-08 19:35:31,247 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:35:30" (1/1) ... [2025-03-08 19:35:31,252 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:35:30" (1/1) ... [2025-03-08 19:35:31,261 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 19:35:31,262 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 19:35:31,262 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 19:35:31,262 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 19:35:31,263 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:35:30" (1/1) ... [2025-03-08 19:35:31,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 19:35:31,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 19:35:31,288 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 19:35:31,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 19:35:31,309 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_serio_raw_mutex [2025-03-08 19:35:31,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_serio_raw_mutex [2025-03-08 19:35:31,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2025-03-08 19:35:31,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2025-03-08 19:35:31,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2025-03-08 19:35:31,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2025-03-08 19:35:31,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2025-03-08 19:35:31,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2025-03-08 19:35:31,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2025-03-08 19:35:31,310 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2025-03-08 19:35:31,311 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2025-03-08 19:35:31,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2025-03-08 19:35:31,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2025-03-08 19:35:31,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2025-03-08 19:35:31,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2025-03-08 19:35:31,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2025-03-08 19:35:31,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2025-03-08 19:35:31,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2025-03-08 19:35:31,311 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2025-03-08 19:35:31,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2025-03-08 19:35:31,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-08 19:35:31,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-08 19:35:31,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-08 19:35:31,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-08 19:35:31,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-08 19:35:31,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-03-08 19:35:31,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2025-03-08 19:35:31,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2025-03-08 19:35:31,312 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2025-03-08 19:35:31,312 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2025-03-08 19:35:31,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2025-03-08 19:35:31,312 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2025-03-08 19:35:31,312 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2025-03-08 19:35:31,312 INFO L130 BoogieDeclarations]: Found specification of procedure kill_fasync [2025-03-08 19:35:31,312 INFO L138 BoogieDeclarations]: Found implementation of procedure kill_fasync [2025-03-08 19:35:31,312 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2025-03-08 19:35:31,312 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2025-03-08 19:35:31,312 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2025-03-08 19:35:31,312 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2025-03-08 19:35:31,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-08 19:35:31,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-08 19:35:31,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-08 19:35:31,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-08 19:35:31,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-08 19:35:31,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-03-08 19:35:31,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2025-03-08 19:35:31,313 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2025-03-08 19:35:31,313 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2025-03-08 19:35:31,313 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2025-03-08 19:35:31,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2025-03-08 19:35:31,313 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2025-03-08 19:35:31,313 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2025-03-08 19:35:31,313 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2025-03-08 19:35:31,313 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2025-03-08 19:35:31,313 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2025-03-08 19:35:31,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2025-03-08 19:35:31,313 INFO L130 BoogieDeclarations]: Found specification of procedure serio_raw_disconnect [2025-03-08 19:35:31,313 INFO L138 BoogieDeclarations]: Found implementation of procedure serio_raw_disconnect [2025-03-08 19:35:31,313 INFO L130 BoogieDeclarations]: Found specification of procedure serio_continue_rx [2025-03-08 19:35:31,313 INFO L138 BoogieDeclarations]: Found implementation of procedure serio_continue_rx [2025-03-08 19:35:31,313 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2025-03-08 19:35:31,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2025-03-08 19:35:31,313 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-08 19:35:31,313 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-08 19:35:31,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-08 19:35:31,313 INFO L130 BoogieDeclarations]: Found specification of procedure serio_raw_poll [2025-03-08 19:35:31,313 INFO L138 BoogieDeclarations]: Found implementation of procedure serio_raw_poll [2025-03-08 19:35:31,313 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2025-03-08 19:35:31,315 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2025-03-08 19:35:31,315 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2025-03-08 19:35:31,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2025-03-08 19:35:31,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 19:35:31,315 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2025-03-08 19:35:31,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2025-03-08 19:35:31,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-08 19:35:31,316 INFO L130 BoogieDeclarations]: Found specification of procedure serio_set_drvdata [2025-03-08 19:35:31,316 INFO L138 BoogieDeclarations]: Found implementation of procedure serio_set_drvdata [2025-03-08 19:35:31,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-08 19:35:31,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-08 19:35:31,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-08 19:35:31,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-03-08 19:35:31,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2025-03-08 19:35:31,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2025-03-08 19:35:31,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2025-03-08 19:35:31,316 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2025-03-08 19:35:31,316 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2025-03-08 19:35:31,316 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2025-03-08 19:35:31,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2025-03-08 19:35:31,316 INFO L130 BoogieDeclarations]: Found specification of procedure misc_register [2025-03-08 19:35:31,316 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_register [2025-03-08 19:35:31,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-08 19:35:31,317 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-08 19:35:31,317 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-08 19:35:31,317 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-03-08 19:35:31,317 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-03-08 19:35:31,317 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2025-03-08 19:35:31,317 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2025-03-08 19:35:31,317 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2025-03-08 19:35:31,317 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2025-03-08 19:35:31,317 INFO L130 BoogieDeclarations]: Found specification of procedure serio_pause_rx [2025-03-08 19:35:31,317 INFO L138 BoogieDeclarations]: Found implementation of procedure serio_pause_rx [2025-03-08 19:35:31,317 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2025-03-08 19:35:31,317 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2025-03-08 19:35:31,317 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_add_return [2025-03-08 19:35:31,317 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_add_return [2025-03-08 19:35:31,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-08 19:35:31,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-03-08 19:35:31,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-03-08 19:35:31,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-03-08 19:35:31,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-03-08 19:35:31,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2025-03-08 19:35:31,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2025-03-08 19:35:31,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2025-03-08 19:35:31,317 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_file_operations_2 [2025-03-08 19:35:31,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_file_operations_2 [2025-03-08 19:35:31,317 INFO L130 BoogieDeclarations]: Found specification of procedure serio_get_drvdata [2025-03-08 19:35:31,317 INFO L138 BoogieDeclarations]: Found implementation of procedure serio_get_drvdata [2025-03-08 19:35:31,318 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2025-03-08 19:35:31,318 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2025-03-08 19:35:31,318 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_serio_raw_mutex [2025-03-08 19:35:31,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_serio_raw_mutex [2025-03-08 19:35:31,318 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2025-03-08 19:35:31,318 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2025-03-08 19:35:31,318 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2025-03-08 19:35:31,318 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2025-03-08 19:35:31,318 INFO L130 BoogieDeclarations]: Found specification of procedure serio_close [2025-03-08 19:35:31,319 INFO L138 BoogieDeclarations]: Found implementation of procedure serio_close [2025-03-08 19:35:31,319 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_serio_raw_mutex [2025-03-08 19:35:31,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_serio_raw_mutex [2025-03-08 19:35:31,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 19:35:31,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-08 19:35:31,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-08 19:35:31,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-08 19:35:31,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-08 19:35:31,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-08 19:35:31,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-08 19:35:31,319 INFO L130 BoogieDeclarations]: Found specification of procedure serio_raw_write [2025-03-08 19:35:31,319 INFO L138 BoogieDeclarations]: Found implementation of procedure serio_raw_write [2025-03-08 19:35:31,319 INFO L130 BoogieDeclarations]: Found specification of procedure serio_raw_fasync [2025-03-08 19:35:31,319 INFO L138 BoogieDeclarations]: Found implementation of procedure serio_raw_fasync [2025-03-08 19:35:31,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 19:35:31,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 19:35:31,588 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 19:35:31,589 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 19:35:31,654 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2025-03-08 19:35:31,758 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L5308: havoc misc_deregister_#t~nondet302#1; [2025-03-08 19:35:31,871 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L5312: havoc #t~nondet303; [2025-03-08 19:35:31,879 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L5319: havoc #t~nondet304; [2025-03-08 19:35:31,900 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L3529: havoc dev_get_drvdata_#t~mem88#1.base, dev_get_drvdata_#t~mem88#1.offset; [2025-03-08 19:35:31,926 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L3406: havoc __kmalloc_#t~ret56#1.base, __kmalloc_#t~ret56#1.offset; [2025-03-08 19:35:32,003 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L4488-1: ldv_mutex_lock_interruptible_14_#res#1 := ldv_mutex_lock_interruptible_14_~ldv_func_res~2#1; [2025-03-08 19:35:32,015 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L5289: havoc fasync_helper_#t~nondet300#1; [2025-03-08 19:35:36,643 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L5323: havoc mutex_lock_killable_#t~nondet305#1; [2025-03-08 19:35:36,643 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L3507: havoc iminor_#t~mem70#1; [2025-03-08 19:35:36,643 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L4467-1: ldv_mutex_lock_interruptible_12_#res#1 := ldv_mutex_lock_interruptible_12_~ldv_func_res~1#1; [2025-03-08 19:35:36,644 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L5295: havoc get_device_#t~ret301#1.base, get_device_#t~ret301#1.offset; [2025-03-08 19:35:36,644 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L3976: call ULTIMATE.dealloc(serio_raw_connect_~#serio_raw_no~0#1.base, serio_raw_connect_~#serio_raw_no~0#1.offset);havoc serio_raw_connect_~#serio_raw_no~0#1.base, serio_raw_connect_~#serio_raw_no~0#1.offset;call ULTIMATE.dealloc(serio_raw_connect_~#descriptor~0#1.base, serio_raw_connect_~#descriptor~0#1.offset);havoc serio_raw_connect_~#descriptor~0#1.base, serio_raw_connect_~#descriptor~0#1.offset;call ULTIMATE.dealloc(serio_raw_connect_~#__key~0#1.base, serio_raw_connect_~#__key~0#1.offset);havoc serio_raw_connect_~#__key~0#1.base, serio_raw_connect_~#__key~0#1.offset; [2025-03-08 19:35:36,644 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L4175: call ULTIMATE.dealloc(main_~#ldvarg1~0#1.base, main_~#ldvarg1~0#1.offset);havoc main_~#ldvarg1~0#1.base, main_~#ldvarg1~0#1.offset;call ULTIMATE.dealloc(main_~#ldvarg0~0#1.base, main_~#ldvarg0~0#1.offset);havoc main_~#ldvarg0~0#1.base, main_~#ldvarg0~0#1.offset;call ULTIMATE.dealloc(main_~#ldvarg3~0#1.base, main_~#ldvarg3~0#1.offset);havoc main_~#ldvarg3~0#1.base, main_~#ldvarg3~0#1.offset;call ULTIMATE.dealloc(main_~#ldvarg12~0#1.base, main_~#ldvarg12~0#1.offset);havoc main_~#ldvarg12~0#1.base, main_~#ldvarg12~0#1.offset;call ULTIMATE.dealloc(main_~#ldvarg5~0#1.base, main_~#ldvarg5~0#1.offset);havoc main_~#ldvarg5~0#1.base, main_~#ldvarg5~0#1.offset;call ULTIMATE.dealloc(main_~#ldvarg6~0#1.base, main_~#ldvarg6~0#1.offset);havoc main_~#ldvarg6~0#1.base, main_~#ldvarg6~0#1.offset;call ULTIMATE.dealloc(main_~#ldvarg4~0#1.base, main_~#ldvarg4~0#1.offset);havoc main_~#ldvarg4~0#1.base, main_~#ldvarg4~0#1.offset;call ULTIMATE.dealloc(main_~#ldvarg9~0#1.base, main_~#ldvarg9~0#1.offset);havoc main_~#ldvarg9~0#1.base, main_~#ldvarg9~0#1.offset; [2025-03-08 19:35:36,644 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L5334: havoc noop_llseek_#t~nondet307#1; [2025-03-08 19:35:36,644 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L4509-1: ldv_mutex_lock_killable_16_#res#1 := ldv_mutex_lock_killable_16_~ldv_func_res~3#1; [2025-03-08 19:35:36,644 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L5270: havoc __serio_register_driver_#t~nondet299#1; [2025-03-08 19:35:36,644 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L5338: havoc prepare_to_wait_event_#t~nondet308#1; [2025-03-08 19:35:36,644 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L3724: call ULTIMATE.dealloc(serio_raw_read_~#c~1#1.base, serio_raw_read_~#c~1#1.offset);havoc serio_raw_read_~#c~1#1.base, serio_raw_read_~#c~1#1.offset;call ULTIMATE.dealloc(serio_raw_read_~#__wait~0#1.base, serio_raw_read_~#__wait~0#1.offset);havoc serio_raw_read_~#__wait~0#1.base, serio_raw_read_~#__wait~0#1.offset; [2025-03-08 19:35:36,644 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L4057: call ULTIMATE.dealloc(serio_raw_reconnect_~#descriptor~1#1.base, serio_raw_reconnect_~#descriptor~1#1.offset);havoc serio_raw_reconnect_~#descriptor~1#1.base, serio_raw_reconnect_~#descriptor~1#1.offset; [2025-03-08 19:35:36,644 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L5351: havoc serio_open_#t~nondet309#1; [2025-03-08 19:35:36,843 INFO L? ?]: Removed 756 outVars from TransFormulas that were not future-live. [2025-03-08 19:35:36,843 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 19:35:36,876 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 19:35:36,876 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 19:35:36,876 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 07:35:36 BoogieIcfgContainer [2025-03-08 19:35:36,880 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 19:35:36,883 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 19:35:36,883 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 19:35:36,886 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 19:35:36,886 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 07:35:29" (1/3) ... [2025-03-08 19:35:36,887 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@355e04f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 07:35:36, skipping insertion in model container [2025-03-08 19:35:36,887 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:35:30" (2/3) ... [2025-03-08 19:35:36,887 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@355e04f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 07:35:36, skipping insertion in model container [2025-03-08 19:35:36,887 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 07:35:36" (3/3) ... [2025-03-08 19:35:36,888 INFO L128 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--input--serio--serio_raw.ko-entry_point.cil.out.i [2025-03-08 19:35:36,904 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 19:35:36,906 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--input--serio--serio_raw.ko-entry_point.cil.out.i that has 41 procedures, 544 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2025-03-08 19:35:36,960 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 19:35:36,968 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;@7303f0cd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 19:35:36,969 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 19:35:36,973 INFO L276 IsEmpty]: Start isEmpty. Operand has 543 states, 387 states have (on average 1.3281653746770026) internal successors, (514), 408 states have internal predecessors, (514), 115 states have call successors, (115), 40 states have call predecessors, (115), 39 states have return successors, (111), 111 states have call predecessors, (111), 111 states have call successors, (111) [2025-03-08 19:35:36,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2025-03-08 19:35:36,983 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 19:35:36,984 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 19:35:36,984 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 19:35:36,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 19:35:36,988 INFO L85 PathProgramCache]: Analyzing trace with hash -630741122, now seen corresponding path program 1 times [2025-03-08 19:35:36,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 19:35:36,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624119752] [2025-03-08 19:35:36,994 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 19:35:36,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 19:35:37,588 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 168 statements into 1 equivalence classes. [2025-03-08 19:35:37,762 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 168 of 168 statements. [2025-03-08 19:35:37,762 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 19:35:37,762 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 19:35:38,072 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2025-03-08 19:35:38,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 19:35:38,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624119752] [2025-03-08 19:35:38,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624119752] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 19:35:38,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998394534] [2025-03-08 19:35:38,074 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 19:35:38,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 19:35:38,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 19:35:38,078 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 19:35:38,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 19:35:38,836 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 168 statements into 1 equivalence classes. [2025-03-08 19:35:39,054 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 168 of 168 statements. [2025-03-08 19:35:39,054 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 19:35:39,054 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 19:35:39,064 INFO L256 TraceCheckSpWp]: Trace formula consists of 1915 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-08 19:35:39,074 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 19:35:39,097 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2025-03-08 19:35:39,098 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 19:35:39,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998394534] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 19:35:39,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 19:35:39,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-08 19:35:39,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147021077] [2025-03-08 19:35:39,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 19:35:39,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 19:35:39,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 19:35:39,120 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 19:35:39,121 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 19:35:39,125 INFO L87 Difference]: Start difference. First operand has 543 states, 387 states have (on average 1.3281653746770026) internal successors, (514), 408 states have internal predecessors, (514), 115 states have call successors, (115), 40 states have call predecessors, (115), 39 states have return successors, (111), 111 states have call predecessors, (111), 111 states have call successors, (111) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2025-03-08 19:35:39,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 19:35:39,214 INFO L93 Difference]: Finished difference Result 1081 states and 1510 transitions. [2025-03-08 19:35:39,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 19:35:39,218 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 168 [2025-03-08 19:35:39,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 19:35:39,227 INFO L225 Difference]: With dead ends: 1081 [2025-03-08 19:35:39,227 INFO L226 Difference]: Without dead ends: 532 [2025-03-08 19:35:39,234 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 19:35:39,236 INFO L435 NwaCegarLoop]: 723 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 19:35:39,237 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 723 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 19:35:39,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2025-03-08 19:35:39,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 532. [2025-03-08 19:35:39,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 382 states have (on average 1.3089005235602094) internal successors, (500), 397 states have internal predecessors, (500), 111 states have call successors, (111), 39 states have call predecessors, (111), 38 states have return successors, (103), 103 states have call predecessors, (103), 103 states have call successors, (103) [2025-03-08 19:35:39,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 714 transitions. [2025-03-08 19:35:39,322 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 714 transitions. Word has length 168 [2025-03-08 19:35:39,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 19:35:39,324 INFO L471 AbstractCegarLoop]: Abstraction has 532 states and 714 transitions. [2025-03-08 19:35:39,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2025-03-08 19:35:39,324 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 714 transitions. [2025-03-08 19:35:39,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2025-03-08 19:35:39,328 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 19:35:39,329 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 19:35:39,339 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-08 19:35:39,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-08 19:35:39,530 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 19:35:39,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 19:35:39,531 INFO L85 PathProgramCache]: Analyzing trace with hash 310354052, now seen corresponding path program 1 times [2025-03-08 19:35:39,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 19:35:39,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029151490] [2025-03-08 19:35:39,531 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 19:35:39,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 19:35:39,985 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 168 statements into 1 equivalence classes. [2025-03-08 19:35:40,062 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 168 of 168 statements. [2025-03-08 19:35:40,062 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 19:35:40,062 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 19:35:40,417 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2025-03-08 19:35:40,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 19:35:40,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029151490] [2025-03-08 19:35:40,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029151490] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 19:35:40,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 19:35:40,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 19:35:40,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855603925] [2025-03-08 19:35:40,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 19:35:40,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 19:35:40,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 19:35:40,423 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 19:35:40,423 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 19:35:40,423 INFO L87 Difference]: Start difference. First operand 532 states and 714 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-03-08 19:35:44,442 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 [] [2025-03-08 19:35:44,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 19:35:44,702 INFO L93 Difference]: Finished difference Result 1503 states and 2015 transitions. [2025-03-08 19:35:44,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 19:35:44,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 168 [2025-03-08 19:35:44,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 19:35:44,714 INFO L225 Difference]: With dead ends: 1503 [2025-03-08 19:35:44,714 INFO L226 Difference]: Without dead ends: 1007 [2025-03-08 19:35:44,716 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 [2025-03-08 19:35:44,719 INFO L435 NwaCegarLoop]: 723 mSDtfsCounter, 639 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 1411 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2025-03-08 19:35:44,719 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [639 Valid, 1411 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2025-03-08 19:35:44,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1007 states. [2025-03-08 19:35:44,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1007 to 1001. [2025-03-08 19:35:44,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1001 states, 726 states have (on average 1.31267217630854) internal successors, (953), 749 states have internal predecessors, (953), 199 states have call successors, (199), 76 states have call predecessors, (199), 75 states have return successors, (191), 191 states have call predecessors, (191), 191 states have call successors, (191) [2025-03-08 19:35:44,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1343 transitions. [2025-03-08 19:35:44,800 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1343 transitions. Word has length 168 [2025-03-08 19:35:44,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 19:35:44,801 INFO L471 AbstractCegarLoop]: Abstraction has 1001 states and 1343 transitions. [2025-03-08 19:35:44,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-03-08 19:35:44,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1343 transitions. [2025-03-08 19:35:44,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2025-03-08 19:35:44,806 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 19:35:44,806 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 19:35:44,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 19:35:44,807 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 19:35:44,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 19:35:44,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1228862533, now seen corresponding path program 1 times [2025-03-08 19:35:44,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 19:35:44,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461075832] [2025-03-08 19:35:44,808 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 19:35:44,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 19:35:45,385 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 175 statements into 1 equivalence classes. [2025-03-08 19:35:45,431 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 175 of 175 statements. [2025-03-08 19:35:45,431 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 19:35:45,431 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 19:35:45,579 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2025-03-08 19:35:45,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 19:35:45,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461075832] [2025-03-08 19:35:45,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461075832] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 19:35:45,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 19:35:45,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 19:35:45,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534908681] [2025-03-08 19:35:45,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 19:35:45,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 19:35:45,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 19:35:45,581 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 19:35:45,581 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 19:35:45,581 INFO L87 Difference]: Start difference. First operand 1001 states and 1343 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-08 19:35:45,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 19:35:45,864 INFO L93 Difference]: Finished difference Result 2451 states and 3233 transitions. [2025-03-08 19:35:45,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 19:35:45,864 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 175 [2025-03-08 19:35:45,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 19:35:45,873 INFO L225 Difference]: With dead ends: 2451 [2025-03-08 19:35:45,874 INFO L226 Difference]: Without dead ends: 1486 [2025-03-08 19:35:45,878 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 [2025-03-08 19:35:45,878 INFO L435 NwaCegarLoop]: 722 mSDtfsCounter, 402 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 1300 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 19:35:45,878 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 1300 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 19:35:45,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1486 states. [2025-03-08 19:35:45,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1486 to 1460. [2025-03-08 19:35:45,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1460 states, 1058 states have (on average 1.2911153119092627) internal successors, (1366), 1097 states have internal predecessors, (1366), 272 states have call successors, (272), 132 states have call predecessors, (272), 129 states have return successors, (272), 256 states have call predecessors, (272), 264 states have call successors, (272) [2025-03-08 19:35:45,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 1910 transitions. [2025-03-08 19:35:45,966 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 1910 transitions. Word has length 175 [2025-03-08 19:35:45,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 19:35:45,967 INFO L471 AbstractCegarLoop]: Abstraction has 1460 states and 1910 transitions. [2025-03-08 19:35:45,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-08 19:35:45,968 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 1910 transitions. [2025-03-08 19:35:45,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2025-03-08 19:35:45,994 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 19:35:45,994 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 19:35:45,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 19:35:45,994 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 19:35:45,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 19:35:45,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1288743675, now seen corresponding path program 1 times [2025-03-08 19:35:45,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 19:35:45,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819079156] [2025-03-08 19:35:45,995 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 19:35:45,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 19:35:46,395 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 173 statements into 1 equivalence classes. [2025-03-08 19:35:46,447 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 173 of 173 statements. [2025-03-08 19:35:46,447 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 19:35:46,447 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 19:35:46,591 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2025-03-08 19:35:46,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 19:35:46,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819079156] [2025-03-08 19:35:46,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819079156] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 19:35:46,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 19:35:46,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 19:35:46,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330317201] [2025-03-08 19:35:46,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 19:35:46,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 19:35:46,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 19:35:46,593 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 19:35:46,593 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 19:35:46,593 INFO L87 Difference]: Start difference. First operand 1460 states and 1910 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-03-08 19:35:46,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 19:35:46,673 INFO L93 Difference]: Finished difference Result 1482 states and 1936 transitions. [2025-03-08 19:35:46,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 19:35:46,674 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 173 [2025-03-08 19:35:46,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 19:35:46,681 INFO L225 Difference]: With dead ends: 1482 [2025-03-08 19:35:46,681 INFO L226 Difference]: Without dead ends: 1471 [2025-03-08 19:35:46,682 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 [2025-03-08 19:35:46,683 INFO L435 NwaCegarLoop]: 722 mSDtfsCounter, 709 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 735 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 19:35:46,683 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [709 Valid, 735 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 19:35:46,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1471 states. [2025-03-08 19:35:46,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1471 to 1460. [2025-03-08 19:35:46,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1460 states, 1058 states have (on average 1.289224952741021) internal successors, (1364), 1097 states have internal predecessors, (1364), 272 states have call successors, (272), 132 states have call predecessors, (272), 129 states have return successors, (272), 256 states have call predecessors, (272), 264 states have call successors, (272) [2025-03-08 19:35:46,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 1908 transitions. [2025-03-08 19:35:46,735 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 1908 transitions. Word has length 173 [2025-03-08 19:35:46,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 19:35:46,736 INFO L471 AbstractCegarLoop]: Abstraction has 1460 states and 1908 transitions. [2025-03-08 19:35:46,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2025-03-08 19:35:46,736 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 1908 transitions. [2025-03-08 19:35:46,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2025-03-08 19:35:46,737 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 19:35:46,738 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 19:35:46,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 19:35:46,738 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 19:35:46,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 19:35:46,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1260114524, now seen corresponding path program 1 times [2025-03-08 19:35:46,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 19:35:46,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570254820] [2025-03-08 19:35:46,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 19:35:46,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 19:35:47,129 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 173 statements into 1 equivalence classes. [2025-03-08 19:35:47,172 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 173 of 173 statements. [2025-03-08 19:35:47,172 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 19:35:47,172 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 19:35:47,338 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2025-03-08 19:35:47,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 19:35:47,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570254820] [2025-03-08 19:35:47,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570254820] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 19:35:47,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 19:35:47,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 19:35:47,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455146885] [2025-03-08 19:35:47,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 19:35:47,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 19:35:47,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 19:35:47,340 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 19:35:47,340 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 19:35:47,341 INFO L87 Difference]: Start difference. First operand 1460 states and 1908 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-08 19:35:47,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 19:35:47,404 INFO L93 Difference]: Finished difference Result 1462 states and 1909 transitions. [2025-03-08 19:35:47,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 19:35:47,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 173 [2025-03-08 19:35:47,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 19:35:47,412 INFO L225 Difference]: With dead ends: 1462 [2025-03-08 19:35:47,413 INFO L226 Difference]: Without dead ends: 1459 [2025-03-08 19:35:47,414 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 [2025-03-08 19:35:47,414 INFO L435 NwaCegarLoop]: 707 mSDtfsCounter, 666 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 666 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 19:35:47,414 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [666 Valid, 707 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 19:35:47,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1459 states. [2025-03-08 19:35:47,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1459 to 1459. [2025-03-08 19:35:47,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1459 states, 1058 states have (on average 1.2882797731568998) internal successors, (1363), 1096 states have internal predecessors, (1363), 271 states have call successors, (271), 132 states have call predecessors, (271), 129 states have return successors, (272), 256 states have call predecessors, (272), 264 states have call successors, (272) [2025-03-08 19:35:47,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1459 states to 1459 states and 1906 transitions. [2025-03-08 19:35:47,474 INFO L78 Accepts]: Start accepts. Automaton has 1459 states and 1906 transitions. Word has length 173 [2025-03-08 19:35:47,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 19:35:47,474 INFO L471 AbstractCegarLoop]: Abstraction has 1459 states and 1906 transitions. [2025-03-08 19:35:47,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-08 19:35:47,475 INFO L276 IsEmpty]: Start isEmpty. Operand 1459 states and 1906 transitions. [2025-03-08 19:35:47,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2025-03-08 19:35:47,476 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 19:35:47,476 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 19:35:47,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 19:35:47,476 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 19:35:47,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 19:35:47,477 INFO L85 PathProgramCache]: Analyzing trace with hash -409396268, now seen corresponding path program 1 times [2025-03-08 19:35:47,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 19:35:47,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044375312] [2025-03-08 19:35:47,477 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 19:35:47,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 19:35:47,893 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 174 statements into 1 equivalence classes. [2025-03-08 19:35:47,940 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 174 of 174 statements. [2025-03-08 19:35:47,940 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 19:35:47,940 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 19:35:48,102 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2025-03-08 19:35:48,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 19:35:48,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044375312] [2025-03-08 19:35:48,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044375312] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 19:35:48,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 19:35:48,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 19:35:48,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783388606] [2025-03-08 19:35:48,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 19:35:48,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 19:35:48,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 19:35:48,103 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 19:35:48,103 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 19:35:48,104 INFO L87 Difference]: Start difference. First operand 1459 states and 1906 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-08 19:35:48,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 19:35:48,183 INFO L93 Difference]: Finished difference Result 1461 states and 1907 transitions. [2025-03-08 19:35:48,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 19:35:48,183 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 174 [2025-03-08 19:35:48,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 19:35:48,192 INFO L225 Difference]: With dead ends: 1461 [2025-03-08 19:35:48,192 INFO L226 Difference]: Without dead ends: 1458 [2025-03-08 19:35:48,193 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 [2025-03-08 19:35:48,195 INFO L435 NwaCegarLoop]: 705 mSDtfsCounter, 663 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 19:35:48,196 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [663 Valid, 705 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 19:35:48,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1458 states. [2025-03-08 19:35:48,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458 to 1458. [2025-03-08 19:35:48,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1458 states, 1058 states have (on average 1.287334593572779) internal successors, (1362), 1095 states have internal predecessors, (1362), 270 states have call successors, (270), 132 states have call predecessors, (270), 129 states have return successors, (272), 256 states have call predecessors, (272), 264 states have call successors, (272) [2025-03-08 19:35:48,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 1904 transitions. [2025-03-08 19:35:48,281 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 1904 transitions. Word has length 174 [2025-03-08 19:35:48,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 19:35:48,281 INFO L471 AbstractCegarLoop]: Abstraction has 1458 states and 1904 transitions. [2025-03-08 19:35:48,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-08 19:35:48,282 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 1904 transitions. [2025-03-08 19:35:48,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2025-03-08 19:35:48,284 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 19:35:48,284 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 19:35:48,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 19:35:48,284 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 19:35:48,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 19:35:48,285 INFO L85 PathProgramCache]: Analyzing trace with hash 298758193, now seen corresponding path program 1 times [2025-03-08 19:35:48,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 19:35:48,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117840504] [2025-03-08 19:35:48,285 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 19:35:48,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 19:35:48,703 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 178 statements into 1 equivalence classes. [2025-03-08 19:35:48,740 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 178 of 178 statements. [2025-03-08 19:35:48,741 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 19:35:48,741 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 19:35:48,851 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2025-03-08 19:35:48,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 19:35:48,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117840504] [2025-03-08 19:35:48,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117840504] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 19:35:48,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 19:35:48,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 19:35:48,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010856666] [2025-03-08 19:35:48,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 19:35:48,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 19:35:48,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 19:35:48,853 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 19:35:48,853 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 19:35:48,853 INFO L87 Difference]: Start difference. First operand 1458 states and 1904 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-08 19:35:49,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 19:35:49,060 INFO L93 Difference]: Finished difference Result 3769 states and 4898 transitions. [2025-03-08 19:35:49,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 19:35:49,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 178 [2025-03-08 19:35:49,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 19:35:49,073 INFO L225 Difference]: With dead ends: 3769 [2025-03-08 19:35:49,073 INFO L226 Difference]: Without dead ends: 2357 [2025-03-08 19:35:49,078 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 [2025-03-08 19:35:49,079 INFO L435 NwaCegarLoop]: 1069 mSDtfsCounter, 548 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 548 SdHoareTripleChecker+Valid, 1707 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 19:35:49,079 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [548 Valid, 1707 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 19:35:49,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2357 states. [2025-03-08 19:35:49,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2357 to 2330. [2025-03-08 19:35:49,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2330 states, 1717 states have (on average 1.2935352358765289) internal successors, (2221), 1762 states have internal predecessors, (2221), 396 states have call successors, (396), 219 states have call predecessors, (396), 216 states have return successors, (404), 382 states have call predecessors, (404), 390 states have call successors, (404) [2025-03-08 19:35:49,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2330 states to 2330 states and 3021 transitions. [2025-03-08 19:35:49,182 INFO L78 Accepts]: Start accepts. Automaton has 2330 states and 3021 transitions. Word has length 178 [2025-03-08 19:35:49,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 19:35:49,183 INFO L471 AbstractCegarLoop]: Abstraction has 2330 states and 3021 transitions. [2025-03-08 19:35:49,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-08 19:35:49,183 INFO L276 IsEmpty]: Start isEmpty. Operand 2330 states and 3021 transitions. [2025-03-08 19:35:49,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2025-03-08 19:35:49,184 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 19:35:49,184 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 19:35:49,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 19:35:49,185 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 19:35:49,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 19:35:49,185 INFO L85 PathProgramCache]: Analyzing trace with hash 193064869, now seen corresponding path program 1 times [2025-03-08 19:35:49,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 19:35:49,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996366105] [2025-03-08 19:35:49,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 19:35:49,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 19:35:49,584 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 175 statements into 1 equivalence classes. [2025-03-08 19:35:49,619 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 175 of 175 statements. [2025-03-08 19:35:49,619 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 19:35:49,619 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 19:35:49,745 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2025-03-08 19:35:49,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 19:35:49,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996366105] [2025-03-08 19:35:49,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996366105] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 19:35:49,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 19:35:49,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 19:35:49,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164007508] [2025-03-08 19:35:49,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 19:35:49,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 19:35:49,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 19:35:49,747 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 19:35:49,748 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 19:35:49,748 INFO L87 Difference]: Start difference. First operand 2330 states and 3021 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-08 19:35:49,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 19:35:49,851 INFO L93 Difference]: Finished difference Result 2332 states and 3022 transitions. [2025-03-08 19:35:49,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 19:35:49,852 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 175 [2025-03-08 19:35:49,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 19:35:49,865 INFO L225 Difference]: With dead ends: 2332 [2025-03-08 19:35:49,865 INFO L226 Difference]: Without dead ends: 2329 [2025-03-08 19:35:49,867 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 [2025-03-08 19:35:49,867 INFO L435 NwaCegarLoop]: 703 mSDtfsCounter, 660 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 660 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 19:35:49,867 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [660 Valid, 703 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 19:35:49,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2329 states. [2025-03-08 19:35:49,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2329 to 2329. [2025-03-08 19:35:49,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2329 states, 1717 states have (on average 1.2929528246942341) internal successors, (2220), 1761 states have internal predecessors, (2220), 395 states have call successors, (395), 219 states have call predecessors, (395), 216 states have return successors, (404), 382 states have call predecessors, (404), 390 states have call successors, (404) [2025-03-08 19:35:49,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2329 states to 2329 states and 3019 transitions. [2025-03-08 19:35:49,986 INFO L78 Accepts]: Start accepts. Automaton has 2329 states and 3019 transitions. Word has length 175 [2025-03-08 19:35:49,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 19:35:49,987 INFO L471 AbstractCegarLoop]: Abstraction has 2329 states and 3019 transitions. [2025-03-08 19:35:49,987 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-08 19:35:49,988 INFO L276 IsEmpty]: Start isEmpty. Operand 2329 states and 3019 transitions. [2025-03-08 19:35:49,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2025-03-08 19:35:49,991 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 19:35:49,991 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 19:35:49,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-08 19:35:49,991 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 19:35:49,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 19:35:49,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1689489909, now seen corresponding path program 1 times [2025-03-08 19:35:49,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 19:35:49,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169179042] [2025-03-08 19:35:49,992 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 19:35:49,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 19:35:50,373 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 176 statements into 1 equivalence classes. [2025-03-08 19:35:50,408 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 176 of 176 statements. [2025-03-08 19:35:50,408 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 19:35:50,408 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 19:35:50,532 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2025-03-08 19:35:50,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 19:35:50,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169179042] [2025-03-08 19:35:50,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169179042] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 19:35:50,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 19:35:50,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 19:35:50,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905570451] [2025-03-08 19:35:50,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 19:35:50,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 19:35:50,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 19:35:50,534 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 19:35:50,534 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 19:35:50,534 INFO L87 Difference]: Start difference. First operand 2329 states and 3019 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-08 19:35:50,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 19:35:50,801 INFO L93 Difference]: Finished difference Result 6413 states and 8465 transitions. [2025-03-08 19:35:50,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 19:35:50,802 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 176 [2025-03-08 19:35:50,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 19:35:50,824 INFO L225 Difference]: With dead ends: 6413 [2025-03-08 19:35:50,824 INFO L226 Difference]: Without dead ends: 4126 [2025-03-08 19:35:50,830 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 [2025-03-08 19:35:50,832 INFO L435 NwaCegarLoop]: 860 mSDtfsCounter, 644 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 1416 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 19:35:50,833 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [644 Valid, 1416 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 19:35:50,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4126 states. [2025-03-08 19:35:51,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4126 to 4084. [2025-03-08 19:35:51,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4084 states, 3075 states have (on average 1.3095934959349593) internal successors, (4027), 3158 states have internal predecessors, (4027), 659 states have call successors, (659), 363 states have call predecessors, (659), 349 states have return successors, (717), 622 states have call predecessors, (717), 651 states have call successors, (717) [2025-03-08 19:35:51,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4084 states to 4084 states and 5403 transitions. [2025-03-08 19:35:51,120 INFO L78 Accepts]: Start accepts. Automaton has 4084 states and 5403 transitions. Word has length 176 [2025-03-08 19:35:51,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 19:35:51,122 INFO L471 AbstractCegarLoop]: Abstraction has 4084 states and 5403 transitions. [2025-03-08 19:35:51,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-08 19:35:51,122 INFO L276 IsEmpty]: Start isEmpty. Operand 4084 states and 5403 transitions. [2025-03-08 19:35:51,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2025-03-08 19:35:51,125 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 19:35:51,126 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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] [2025-03-08 19:35:51,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-08 19:35:51,126 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 19:35:51,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 19:35:51,126 INFO L85 PathProgramCache]: Analyzing trace with hash 299055092, now seen corresponding path program 1 times [2025-03-08 19:35:51,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 19:35:51,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845103459] [2025-03-08 19:35:51,128 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 19:35:51,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 19:35:51,661 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 230 statements into 1 equivalence classes. [2025-03-08 19:35:51,694 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 230 of 230 statements. [2025-03-08 19:35:51,694 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 19:35:51,694 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 19:35:51,898 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 434 trivial. 0 not checked. [2025-03-08 19:35:51,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 19:35:51,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845103459] [2025-03-08 19:35:51,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845103459] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 19:35:51,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 19:35:51,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 19:35:51,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400169088] [2025-03-08 19:35:51,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 19:35:51,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 19:35:51,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 19:35:51,900 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 19:35:51,901 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 19:35:51,902 INFO L87 Difference]: Start difference. First operand 4084 states and 5403 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2025-03-08 19:35:55,918 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 [] [2025-03-08 19:35:56,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 19:35:56,353 INFO L93 Difference]: Finished difference Result 9760 states and 12931 transitions. [2025-03-08 19:35:56,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 19:35:56,353 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 230 [2025-03-08 19:35:56,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 19:35:56,383 INFO L225 Difference]: With dead ends: 9760 [2025-03-08 19:35:56,384 INFO L226 Difference]: Without dead ends: 5726 [2025-03-08 19:35:56,396 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 [2025-03-08 19:35:56,397 INFO L435 NwaCegarLoop]: 1106 mSDtfsCounter, 599 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 1692 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2025-03-08 19:35:56,398 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [599 Valid, 1692 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 31 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2025-03-08 19:35:56,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5726 states. [2025-03-08 19:35:56,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5726 to 5678. [2025-03-08 19:35:56,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5678 states, 4327 states have (on average 1.3143055234573608) internal successors, (5687), 4422 states have internal predecessors, (5687), 863 states have call successors, (863), 505 states have call predecessors, (863), 487 states have return successors, (949), 822 states have call predecessors, (949), 855 states have call successors, (949) [2025-03-08 19:35:56,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5678 states to 5678 states and 7499 transitions. [2025-03-08 19:35:56,658 INFO L78 Accepts]: Start accepts. Automaton has 5678 states and 7499 transitions. Word has length 230 [2025-03-08 19:35:56,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 19:35:56,659 INFO L471 AbstractCegarLoop]: Abstraction has 5678 states and 7499 transitions. [2025-03-08 19:35:56,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2025-03-08 19:35:56,663 INFO L276 IsEmpty]: Start isEmpty. Operand 5678 states and 7499 transitions. [2025-03-08 19:35:56,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2025-03-08 19:35:56,668 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 19:35:56,669 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 19:35:56,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-08 19:35:56,669 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 19:35:56,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 19:35:56,669 INFO L85 PathProgramCache]: Analyzing trace with hash 640899518, now seen corresponding path program 1 times [2025-03-08 19:35:56,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 19:35:56,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295010673] [2025-03-08 19:35:56,670 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 19:35:56,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 19:35:57,079 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 260 statements into 1 equivalence classes. [2025-03-08 19:35:57,118 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 260 of 260 statements. [2025-03-08 19:35:57,118 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 19:35:57,118 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 19:35:57,403 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2025-03-08 19:35:57,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 19:35:57,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295010673] [2025-03-08 19:35:57,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295010673] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 19:35:57,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 19:35:57,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 19:35:57,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706619620] [2025-03-08 19:35:57,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 19:35:57,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 19:35:57,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 19:35:57,406 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 19:35:57,406 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 19:35:57,406 INFO L87 Difference]: Start difference. First operand 5678 states and 7499 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2025-03-08 19:36:01,421 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 [] [2025-03-08 19:36:01,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 19:36:01,900 INFO L93 Difference]: Finished difference Result 13636 states and 17961 transitions. [2025-03-08 19:36:01,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 19:36:01,901 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 260 [2025-03-08 19:36:01,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 19:36:01,950 INFO L225 Difference]: With dead ends: 13636 [2025-03-08 19:36:01,951 INFO L226 Difference]: Without dead ends: 8008 [2025-03-08 19:36:01,968 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-08 19:36:01,969 INFO L435 NwaCegarLoop]: 1314 mSDtfsCounter, 617 mSDsluCounter, 2006 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 3320 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2025-03-08 19:36:01,969 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [617 Valid, 3320 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2025-03-08 19:36:01,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8008 states. [2025-03-08 19:36:02,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8008 to 5694. [2025-03-08 19:36:02,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5694 states, 4343 states have (on average 1.3131475938291504) internal successors, (5703), 4438 states have internal predecessors, (5703), 863 states have call successors, (863), 505 states have call predecessors, (863), 487 states have return successors, (949), 822 states have call predecessors, (949), 855 states have call successors, (949) [2025-03-08 19:36:02,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5694 states to 5694 states and 7515 transitions. [2025-03-08 19:36:02,209 INFO L78 Accepts]: Start accepts. Automaton has 5694 states and 7515 transitions. Word has length 260 [2025-03-08 19:36:02,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 19:36:02,210 INFO L471 AbstractCegarLoop]: Abstraction has 5694 states and 7515 transitions. [2025-03-08 19:36:02,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2025-03-08 19:36:02,211 INFO L276 IsEmpty]: Start isEmpty. Operand 5694 states and 7515 transitions. [2025-03-08 19:36:02,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2025-03-08 19:36:02,214 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 19:36:02,215 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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] [2025-03-08 19:36:02,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-08 19:36:02,215 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 19:36:02,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 19:36:02,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1517634192, now seen corresponding path program 1 times [2025-03-08 19:36:02,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 19:36:02,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289465956] [2025-03-08 19:36:02,216 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 19:36:02,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 19:36:02,620 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 260 statements into 1 equivalence classes. [2025-03-08 19:36:02,651 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 260 of 260 statements. [2025-03-08 19:36:02,652 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 19:36:02,652 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 19:36:02,771 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2025-03-08 19:36:02,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 19:36:02,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289465956] [2025-03-08 19:36:02,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289465956] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 19:36:02,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 19:36:02,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 19:36:02,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293424492] [2025-03-08 19:36:02,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 19:36:02,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 19:36:02,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 19:36:02,772 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 19:36:02,772 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 19:36:02,773 INFO L87 Difference]: Start difference. First operand 5694 states and 7515 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2025-03-08 19:36:03,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 19:36:03,004 INFO L93 Difference]: Finished difference Result 11338 states and 14987 transitions. [2025-03-08 19:36:03,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 19:36:03,005 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 260 [2025-03-08 19:36:03,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 19:36:03,030 INFO L225 Difference]: With dead ends: 11338 [2025-03-08 19:36:03,030 INFO L226 Difference]: Without dead ends: 5694 [2025-03-08 19:36:03,046 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 [2025-03-08 19:36:03,046 INFO L435 NwaCegarLoop]: 698 mSDtfsCounter, 0 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1390 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 19:36:03,046 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1390 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 19:36:03,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5694 states. [2025-03-08 19:36:03,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5694 to 5694. [2025-03-08 19:36:03,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5694 states, 4343 states have (on average 1.302095325811651) internal successors, (5655), 4438 states have internal predecessors, (5655), 863 states have call successors, (863), 505 states have call predecessors, (863), 487 states have return successors, (949), 822 states have call predecessors, (949), 855 states have call successors, (949) [2025-03-08 19:36:03,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5694 states to 5694 states and 7467 transitions. [2025-03-08 19:36:03,346 INFO L78 Accepts]: Start accepts. Automaton has 5694 states and 7467 transitions. Word has length 260 [2025-03-08 19:36:03,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 19:36:03,347 INFO L471 AbstractCegarLoop]: Abstraction has 5694 states and 7467 transitions. [2025-03-08 19:36:03,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2025-03-08 19:36:03,347 INFO L276 IsEmpty]: Start isEmpty. Operand 5694 states and 7467 transitions. [2025-03-08 19:36:03,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2025-03-08 19:36:03,349 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 19:36:03,350 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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] [2025-03-08 19:36:03,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-08 19:36:03,350 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 19:36:03,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 19:36:03,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1457035947, now seen corresponding path program 1 times [2025-03-08 19:36:03,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 19:36:03,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896853476] [2025-03-08 19:36:03,351 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 19:36:03,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 19:36:03,729 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 262 statements into 1 equivalence classes. [2025-03-08 19:36:03,772 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 262 of 262 statements. [2025-03-08 19:36:03,772 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 19:36:03,772 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 19:36:04,018 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2025-03-08 19:36:04,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 19:36:04,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896853476] [2025-03-08 19:36:04,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896853476] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 19:36:04,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 19:36:04,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 19:36:04,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528301433] [2025-03-08 19:36:04,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 19:36:04,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 19:36:04,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 19:36:04,020 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 19:36:04,020 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 19:36:04,021 INFO L87 Difference]: Start difference. First operand 5694 states and 7467 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2025-03-08 19:36:08,036 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 [] [2025-03-08 19:36:08,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 19:36:08,353 INFO L93 Difference]: Finished difference Result 11340 states and 14872 transitions. [2025-03-08 19:36:08,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 19:36:08,353 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 262 [2025-03-08 19:36:08,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 19:36:08,374 INFO L225 Difference]: With dead ends: 11340 [2025-03-08 19:36:08,375 INFO L226 Difference]: Without dead ends: 5696 [2025-03-08 19:36:08,388 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 [2025-03-08 19:36:08,389 INFO L435 NwaCegarLoop]: 1021 mSDtfsCounter, 553 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 1684 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2025-03-08 19:36:08,389 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [553 Valid, 1684 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 22 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2025-03-08 19:36:08,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5696 states. [2025-03-08 19:36:08,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5696 to 5567. [2025-03-08 19:36:08,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5567 states, 4265 states have (on average 1.3010550996483001) internal successors, (5549), 4352 states have internal predecessors, (5549), 822 states have call successors, (822), 479 states have call predecessors, (822), 479 states have return successors, (846), 807 states have call predecessors, (846), 802 states have call successors, (846) [2025-03-08 19:36:08,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5567 states to 5567 states and 7217 transitions. [2025-03-08 19:36:08,585 INFO L78 Accepts]: Start accepts. Automaton has 5567 states and 7217 transitions. Word has length 262 [2025-03-08 19:36:08,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 19:36:08,585 INFO L471 AbstractCegarLoop]: Abstraction has 5567 states and 7217 transitions. [2025-03-08 19:36:08,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2025-03-08 19:36:08,586 INFO L276 IsEmpty]: Start isEmpty. Operand 5567 states and 7217 transitions. [2025-03-08 19:36:08,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2025-03-08 19:36:08,588 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 19:36:08,588 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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] [2025-03-08 19:36:08,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-08 19:36:08,589 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 19:36:08,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 19:36:08,589 INFO L85 PathProgramCache]: Analyzing trace with hash 177172269, now seen corresponding path program 1 times [2025-03-08 19:36:08,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 19:36:08,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171140090] [2025-03-08 19:36:08,589 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 19:36:08,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 19:36:08,983 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 262 statements into 1 equivalence classes. [2025-03-08 19:36:09,050 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 262 of 262 statements. [2025-03-08 19:36:09,050 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 19:36:09,050 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 19:36:09,296 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2025-03-08 19:36:09,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 19:36:09,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171140090] [2025-03-08 19:36:09,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171140090] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 19:36:09,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 19:36:09,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 19:36:09,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359201638] [2025-03-08 19:36:09,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 19:36:09,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 19:36:09,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 19:36:09,297 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 19:36:09,297 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 19:36:09,298 INFO L87 Difference]: Start difference. First operand 5567 states and 7217 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2025-03-08 19:36:09,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 19:36:09,557 INFO L93 Difference]: Finished difference Result 5594 states and 7253 transitions. [2025-03-08 19:36:09,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 19:36:09,557 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 262 [2025-03-08 19:36:09,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 19:36:09,576 INFO L225 Difference]: With dead ends: 5594 [2025-03-08 19:36:09,577 INFO L226 Difference]: Without dead ends: 5572 [2025-03-08 19:36:09,579 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 [2025-03-08 19:36:09,579 INFO L435 NwaCegarLoop]: 707 mSDtfsCounter, 1 mSDsluCounter, 2096 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2803 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 19:36:09,580 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2803 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 19:36:09,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5572 states. [2025-03-08 19:36:09,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5572 to 5558. [2025-03-08 19:36:09,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5558 states, 4261 states have (on average 1.3003989673785497) internal successors, (5541), 4345 states have internal predecessors, (5541), 818 states have call successors, (818), 478 states have call predecessors, (818), 478 states have return successors, (843), 806 states have call predecessors, (843), 799 states have call successors, (843) [2025-03-08 19:36:09,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5558 states to 5558 states and 7202 transitions. [2025-03-08 19:36:09,775 INFO L78 Accepts]: Start accepts. Automaton has 5558 states and 7202 transitions. Word has length 262 [2025-03-08 19:36:09,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 19:36:09,776 INFO L471 AbstractCegarLoop]: Abstraction has 5558 states and 7202 transitions. [2025-03-08 19:36:09,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2025-03-08 19:36:09,776 INFO L276 IsEmpty]: Start isEmpty. Operand 5558 states and 7202 transitions. [2025-03-08 19:36:09,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2025-03-08 19:36:09,779 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 19:36:09,779 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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] [2025-03-08 19:36:09,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-08 19:36:09,779 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 19:36:09,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 19:36:09,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1095820269, now seen corresponding path program 1 times [2025-03-08 19:36:09,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 19:36:09,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979265793] [2025-03-08 19:36:09,780 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 19:36:09,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 19:36:10,361 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 295 statements into 1 equivalence classes. [2025-03-08 19:36:10,414 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 295 of 295 statements. [2025-03-08 19:36:10,415 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 19:36:10,415 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 19:36:10,746 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2025-03-08 19:36:10,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 19:36:10,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979265793] [2025-03-08 19:36:10,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979265793] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 19:36:10,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 19:36:10,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 19:36:10,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783074615] [2025-03-08 19:36:10,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 19:36:10,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 19:36:10,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 19:36:10,748 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 19:36:10,748 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 19:36:10,748 INFO L87 Difference]: Start difference. First operand 5558 states and 7202 transitions. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2025-03-08 19:36:11,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 19:36:11,144 INFO L93 Difference]: Finished difference Result 11052 states and 14329 transitions. [2025-03-08 19:36:11,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 19:36:11,145 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 295 [2025-03-08 19:36:11,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 19:36:11,167 INFO L225 Difference]: With dead ends: 11052 [2025-03-08 19:36:11,167 INFO L226 Difference]: Without dead ends: 5544 [2025-03-08 19:36:11,180 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 [2025-03-08 19:36:11,180 INFO L435 NwaCegarLoop]: 697 mSDtfsCounter, 0 mSDsluCounter, 2075 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2772 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 19:36:11,180 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2772 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 19:36:11,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5544 states. [2025-03-08 19:36:11,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5544 to 5544. [2025-03-08 19:36:11,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5544 states, 4255 states have (on average 1.299882491186839) internal successors, (5531), 4335 states have internal predecessors, (5531), 814 states have call successors, (814), 474 states have call predecessors, (814), 474 states have return successors, (839), 802 states have call predecessors, (839), 795 states have call successors, (839) [2025-03-08 19:36:11,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5544 states to 5544 states and 7184 transitions. [2025-03-08 19:36:11,356 INFO L78 Accepts]: Start accepts. Automaton has 5544 states and 7184 transitions. Word has length 295 [2025-03-08 19:36:11,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 19:36:11,357 INFO L471 AbstractCegarLoop]: Abstraction has 5544 states and 7184 transitions. [2025-03-08 19:36:11,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2025-03-08 19:36:11,357 INFO L276 IsEmpty]: Start isEmpty. Operand 5544 states and 7184 transitions. [2025-03-08 19:36:11,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2025-03-08 19:36:11,364 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 19:36:11,364 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 3, 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] [2025-03-08 19:36:11,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-08 19:36:11,365 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 19:36:11,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 19:36:11,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1151127208, now seen corresponding path program 1 times [2025-03-08 19:36:11,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 19:36:11,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689213698] [2025-03-08 19:36:11,366 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 19:36:11,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 19:36:11,756 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 352 statements into 1 equivalence classes. [2025-03-08 19:36:11,794 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 352 of 352 statements. [2025-03-08 19:36:11,794 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 19:36:11,794 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 19:36:11,926 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 653 trivial. 0 not checked. [2025-03-08 19:36:11,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 19:36:11,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689213698] [2025-03-08 19:36:11,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689213698] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 19:36:11,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 19:36:11,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 19:36:11,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698861509] [2025-03-08 19:36:11,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 19:36:11,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 19:36:11,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 19:36:11,928 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 19:36:11,928 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 19:36:11,928 INFO L87 Difference]: Start difference. First operand 5544 states and 7184 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2025-03-08 19:36:15,943 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 [] [2025-03-08 19:36:16,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 19:36:16,421 INFO L93 Difference]: Finished difference Result 13079 states and 16888 transitions. [2025-03-08 19:36:16,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 19:36:16,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 352 [2025-03-08 19:36:16,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 19:36:16,466 INFO L225 Difference]: With dead ends: 13079 [2025-03-08 19:36:16,466 INFO L226 Difference]: Without dead ends: 7585 [2025-03-08 19:36:16,476 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 [2025-03-08 19:36:16,477 INFO L435 NwaCegarLoop]: 924 mSDtfsCounter, 475 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 1494 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2025-03-08 19:36:16,477 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [475 Valid, 1494 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 47 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2025-03-08 19:36:16,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7585 states. [2025-03-08 19:36:16,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7585 to 7271. [2025-03-08 19:36:16,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7271 states, 5673 states have (on average 1.2943768729067513) internal successors, (7343), 5781 states have internal predecessors, (7343), 948 states have call successors, (948), 642 states have call predecessors, (948), 649 states have return successors, (983), 932 states have call predecessors, (983), 927 states have call successors, (983) [2025-03-08 19:36:16,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7271 states to 7271 states and 9274 transitions. [2025-03-08 19:36:16,859 INFO L78 Accepts]: Start accepts. Automaton has 7271 states and 9274 transitions. Word has length 352 [2025-03-08 19:36:16,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 19:36:16,860 INFO L471 AbstractCegarLoop]: Abstraction has 7271 states and 9274 transitions. [2025-03-08 19:36:16,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2025-03-08 19:36:16,861 INFO L276 IsEmpty]: Start isEmpty. Operand 7271 states and 9274 transitions. [2025-03-08 19:36:16,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2025-03-08 19:36:16,871 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 19:36:16,871 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 3, 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] [2025-03-08 19:36:16,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-08 19:36:16,872 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 19:36:16,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 19:36:16,872 INFO L85 PathProgramCache]: Analyzing trace with hash 478801032, now seen corresponding path program 1 times [2025-03-08 19:36:16,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 19:36:16,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906885217] [2025-03-08 19:36:16,872 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 19:36:16,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 19:36:17,512 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 351 statements into 1 equivalence classes. [2025-03-08 19:36:17,597 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 351 of 351 statements. [2025-03-08 19:36:17,598 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 19:36:17,598 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 19:36:18,023 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 658 trivial. 0 not checked. [2025-03-08 19:36:18,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 19:36:18,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906885217] [2025-03-08 19:36:18,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906885217] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 19:36:18,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 19:36:18,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 19:36:18,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910412467] [2025-03-08 19:36:18,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 19:36:18,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 19:36:18,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 19:36:18,024 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 19:36:18,024 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 19:36:18,025 INFO L87 Difference]: Start difference. First operand 7271 states and 9274 transitions. Second operand has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (34), 2 states have call predecessors, (34), 1 states have call successors, (34) [2025-03-08 19:36:18,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 19:36:18,308 INFO L93 Difference]: Finished difference Result 7342 states and 9362 transitions. [2025-03-08 19:36:18,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 19:36:18,309 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (34), 2 states have call predecessors, (34), 1 states have call successors, (34) Word has length 351 [2025-03-08 19:36:18,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 19:36:18,330 INFO L225 Difference]: With dead ends: 7342 [2025-03-08 19:36:18,330 INFO L226 Difference]: Without dead ends: 7236 [2025-03-08 19:36:18,332 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 19:36:18,333 INFO L435 NwaCegarLoop]: 703 mSDtfsCounter, 1 mSDsluCounter, 2794 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3497 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 19:36:18,333 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 3497 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 19:36:18,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7236 states. [2025-03-08 19:36:18,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7236 to 7188. [2025-03-08 19:36:18,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7188 states, 5599 states have (on average 1.2884443650651902) internal successors, (7214), 5706 states have internal predecessors, (7214), 940 states have call successors, (940), 641 states have call predecessors, (940), 648 states have return successors, (976), 925 states have call predecessors, (976), 920 states have call successors, (976) [2025-03-08 19:36:18,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7188 states to 7188 states and 9130 transitions. [2025-03-08 19:36:18,722 INFO L78 Accepts]: Start accepts. Automaton has 7188 states and 9130 transitions. Word has length 351 [2025-03-08 19:36:18,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 19:36:18,723 INFO L471 AbstractCegarLoop]: Abstraction has 7188 states and 9130 transitions. [2025-03-08 19:36:18,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (34), 2 states have call predecessors, (34), 1 states have call successors, (34) [2025-03-08 19:36:18,723 INFO L276 IsEmpty]: Start isEmpty. Operand 7188 states and 9130 transitions. [2025-03-08 19:36:18,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2025-03-08 19:36:18,738 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 19:36:18,738 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 3, 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] [2025-03-08 19:36:18,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-08 19:36:18,738 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 19:36:18,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 19:36:18,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1667630284, now seen corresponding path program 1 times [2025-03-08 19:36:18,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 19:36:18,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109618872] [2025-03-08 19:36:18,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 19:36:18,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 19:36:19,209 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 358 statements into 1 equivalence classes. [2025-03-08 19:36:19,324 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 358 of 358 statements. [2025-03-08 19:36:19,324 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 19:36:19,324 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 19:36:19,856 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 658 trivial. 0 not checked. [2025-03-08 19:36:19,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 19:36:19,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109618872] [2025-03-08 19:36:19,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109618872] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 19:36:19,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 19:36:19,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 19:36:19,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130647952] [2025-03-08 19:36:19,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 19:36:19,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 19:36:19,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 19:36:19,859 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 19:36:19,859 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 19:36:19,860 INFO L87 Difference]: Start difference. First operand 7188 states and 9130 transitions. Second operand has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 5 states have internal predecessors, (148), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (34), 2 states have call predecessors, (34), 1 states have call successors, (34) [2025-03-08 19:36:20,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 19:36:20,164 INFO L93 Difference]: Finished difference Result 7296 states and 9247 transitions. [2025-03-08 19:36:20,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 19:36:20,165 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 5 states have internal predecessors, (148), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (34), 2 states have call predecessors, (34), 1 states have call successors, (34) Word has length 358 [2025-03-08 19:36:20,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 19:36:20,187 INFO L225 Difference]: With dead ends: 7296 [2025-03-08 19:36:20,187 INFO L226 Difference]: Without dead ends: 6962 [2025-03-08 19:36:20,190 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 19:36:20,191 INFO L435 NwaCegarLoop]: 701 mSDtfsCounter, 1 mSDsluCounter, 2786 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3487 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 19:36:20,191 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 3487 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 19:36:20,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6962 states. [2025-03-08 19:36:20,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6962 to 6938. [2025-03-08 19:36:20,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6938 states, 5414 states have (on average 1.287587735500554) internal successors, (6971), 5511 states have internal predecessors, (6971), 894 states have call successors, (894), 621 states have call predecessors, (894), 629 states have return successors, (932), 885 states have call predecessors, (932), 876 states have call successors, (932) [2025-03-08 19:36:20,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6938 states to 6938 states and 8797 transitions. [2025-03-08 19:36:20,418 INFO L78 Accepts]: Start accepts. Automaton has 6938 states and 8797 transitions. Word has length 358 [2025-03-08 19:36:20,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 19:36:20,420 INFO L471 AbstractCegarLoop]: Abstraction has 6938 states and 8797 transitions. [2025-03-08 19:36:20,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 5 states have internal predecessors, (148), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (34), 2 states have call predecessors, (34), 1 states have call successors, (34) [2025-03-08 19:36:20,421 INFO L276 IsEmpty]: Start isEmpty. Operand 6938 states and 8797 transitions. [2025-03-08 19:36:20,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2025-03-08 19:36:20,430 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 19:36:20,430 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 4, 3, 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] [2025-03-08 19:36:20,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-08 19:36:20,430 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 19:36:20,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 19:36:20,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1918763431, now seen corresponding path program 1 times [2025-03-08 19:36:20,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 19:36:20,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124131699] [2025-03-08 19:36:20,431 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 19:36:20,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 19:36:20,858 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 364 statements into 1 equivalence classes. [2025-03-08 19:36:20,903 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 364 of 364 statements. [2025-03-08 19:36:20,904 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 19:36:20,904 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 19:36:21,339 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 658 trivial. 0 not checked. [2025-03-08 19:36:21,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 19:36:21,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124131699] [2025-03-08 19:36:21,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124131699] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 19:36:21,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 19:36:21,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 19:36:21,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33695566] [2025-03-08 19:36:21,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 19:36:21,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 19:36:21,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 19:36:21,342 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 19:36:21,342 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 19:36:21,343 INFO L87 Difference]: Start difference. First operand 6938 states and 8797 transitions. Second operand has 6 states, 6 states have (on average 25.5) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (35), 3 states have call predecessors, (35), 1 states have call successors, (35) [2025-03-08 19:36:21,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 19:36:21,826 INFO L93 Difference]: Finished difference Result 13952 states and 17777 transitions. [2025-03-08 19:36:21,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 19:36:21,827 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (35), 3 states have call predecessors, (35), 1 states have call successors, (35) Word has length 364 [2025-03-08 19:36:21,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 19:36:21,849 INFO L225 Difference]: With dead ends: 13952 [2025-03-08 19:36:21,849 INFO L226 Difference]: Without dead ends: 7064 [2025-03-08 19:36:21,859 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 19:36:21,860 INFO L435 NwaCegarLoop]: 699 mSDtfsCounter, 15 mSDsluCounter, 2781 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 3480 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 19:36:21,860 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 3480 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 19:36:21,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7064 states. [2025-03-08 19:36:22,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7064 to 7016. [2025-03-08 19:36:22,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7016 states, 5492 states have (on average 1.2900582665695557) internal successors, (7085), 5589 states have internal predecessors, (7085), 906 states have call successors, (906), 621 states have call predecessors, (906), 617 states have return successors, (932), 885 states have call predecessors, (932), 888 states have call successors, (932) [2025-03-08 19:36:22,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7016 states to 7016 states and 8923 transitions. [2025-03-08 19:36:22,076 INFO L78 Accepts]: Start accepts. Automaton has 7016 states and 8923 transitions. Word has length 364 [2025-03-08 19:36:22,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 19:36:22,076 INFO L471 AbstractCegarLoop]: Abstraction has 7016 states and 8923 transitions. [2025-03-08 19:36:22,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (35), 3 states have call predecessors, (35), 1 states have call successors, (35) [2025-03-08 19:36:22,077 INFO L276 IsEmpty]: Start isEmpty. Operand 7016 states and 8923 transitions. [2025-03-08 19:36:22,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2025-03-08 19:36:22,089 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 19:36:22,089 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 4, 3, 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] [2025-03-08 19:36:22,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-08 19:36:22,089 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 19:36:22,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 19:36:22,090 INFO L85 PathProgramCache]: Analyzing trace with hash 44758167, now seen corresponding path program 1 times [2025-03-08 19:36:22,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 19:36:22,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666808820] [2025-03-08 19:36:22,090 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 19:36:22,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 19:36:22,541 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 366 statements into 1 equivalence classes. [2025-03-08 19:36:22,573 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 366 of 366 statements. [2025-03-08 19:36:22,574 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 19:36:22,575 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 19:36:22,951 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 658 trivial. 0 not checked. [2025-03-08 19:36:22,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 19:36:22,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666808820] [2025-03-08 19:36:22,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666808820] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 19:36:22,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 19:36:22,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 19:36:22,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264929720] [2025-03-08 19:36:22,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 19:36:22,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 19:36:22,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 19:36:22,953 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 19:36:22,953 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 19:36:22,953 INFO L87 Difference]: Start difference. First operand 7016 states and 8923 transitions. Second operand has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (34), 2 states have call predecessors, (34), 1 states have call successors, (34) [2025-03-08 19:36:23,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 19:36:23,208 INFO L93 Difference]: Finished difference Result 7146 states and 9055 transitions. [2025-03-08 19:36:23,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 19:36:23,209 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (34), 2 states have call predecessors, (34), 1 states have call successors, (34) Word has length 366 [2025-03-08 19:36:23,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 19:36:23,217 INFO L225 Difference]: With dead ends: 7146 [2025-03-08 19:36:23,218 INFO L226 Difference]: Without dead ends: 0 [2025-03-08 19:36:23,225 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 19:36:23,225 INFO L435 NwaCegarLoop]: 683 mSDtfsCounter, 28 mSDsluCounter, 2682 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 3365 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 19:36:23,226 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 3365 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 19:36:23,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-03-08 19:36:23,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-03-08 19:36:23,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 19:36:23,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-03-08 19:36:23,234 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 366 [2025-03-08 19:36:23,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 19:36:23,234 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-03-08 19:36:23,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (34), 2 states have call predecessors, (34), 1 states have call successors, (34) [2025-03-08 19:36:23,235 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-03-08 19:36:23,235 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-03-08 19:36:23,242 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-03-08 19:36:23,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-08 19:36:23,250 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 19:36:23,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.