/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver 'cvc5 --incremental --print-success --lang smt' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--iio--trigger--iio-trig-interrupt.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-356b6ba-m [2024-11-01 11:01:13,826 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-01 11:01:13,929 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-01 11:01:13,937 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-01 11:01:13,938 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-01 11:01:13,974 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-01 11:01:13,981 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-01 11:01:13,981 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-01 11:01:13,982 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-01 11:01:13,982 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-01 11:01:13,982 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-01 11:01:13,983 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-01 11:01:13,983 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-01 11:01:13,983 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-01 11:01:13,983 INFO L153 SettingsManager]: * Use SBE=true [2024-11-01 11:01:13,984 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-01 11:01:13,984 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-01 11:01:13,989 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-01 11:01:13,989 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-01 11:01:13,990 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-01 11:01:13,990 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-01 11:01:13,992 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-01 11:01:13,992 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-01 11:01:13,992 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-01 11:01:13,992 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-01 11:01:13,992 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-01 11:01:13,993 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-01 11:01:13,993 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-01 11:01:13,993 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-01 11:01:13,993 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-01 11:01:13,993 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-01 11:01:13,993 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-01 11:01:13,994 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-01 11:01:13,994 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-01 11:01:13,994 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-01 11:01:13,994 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-01 11:01:13,994 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-01 11:01:13,995 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-01 11:01:13,995 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-01 11:01:13,995 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-01 11:01:13,999 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-01 11:01:13,999 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-11-01 11:01:13,999 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc5 --incremental --print-success --lang smt [2024-11-01 11:01:14,372 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-01 11:01:14,396 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-01 11:01:14,403 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-01 11:01:14,404 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-01 11:01:14,407 INFO L274 PluginConnector]: CDTParser initialized [2024-11-01 11:01:14,408 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--iio--trigger--iio-trig-interrupt.ko-entry_point.cil.out.i [2024-11-01 11:01:15,831 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-01 11:01:16,141 INFO L384 CDTParser]: Found 1 translation units. [2024-11-01 11:01:16,142 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--iio--trigger--iio-trig-interrupt.ko-entry_point.cil.out.i [2024-11-01 11:01:16,166 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7161bd619/9d6fecbf61f147e1a260e73210c5d572/FLAG4fbb7e0bb [2024-11-01 11:01:16,178 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7161bd619/9d6fecbf61f147e1a260e73210c5d572 [2024-11-01 11:01:16,181 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-01 11:01:16,182 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-01 11:01:16,183 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-01 11:01:16,183 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-01 11:01:16,187 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-01 11:01:16,188 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 11:01:16" (1/1) ... [2024-11-01 11:01:16,188 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dd24f91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 11:01:16, skipping insertion in model container [2024-11-01 11:01:16,188 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 11:01:16" (1/1) ... [2024-11-01 11:01:16,252 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-01 11:01:16,750 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-01 11:01:16,788 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-01 11:01:16,794 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-01 11:01:16,794 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-01 11:01:16,797 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-01 11:01:16,798 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-01 11:01:16,799 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-01 11:01:16,799 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-01 11:01:16,804 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-01 11:01:16,805 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-01 11:01:16,805 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-01 11:01:16,805 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-01 11:01:16,831 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-01 11:01:16,853 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--iio--trigger--iio-trig-interrupt.ko-entry_point.cil.out.i[90555,90568] [2024-11-01 11:01:16,883 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-01 11:01:16,884 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-01 11:01:16,904 INFO L200 MainTranslator]: Completed pre-run [2024-11-01 11:01:17,104 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--iio--trigger--iio-trig-interrupt.ko-entry_point.cil.out.i[90555,90568] [2024-11-01 11:01:17,116 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-01 11:01:17,160 INFO L204 MainTranslator]: Completed translation [2024-11-01 11:01:17,162 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 11:01:17 WrapperNode [2024-11-01 11:01:17,162 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-01 11:01:17,163 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-01 11:01:17,163 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-01 11:01:17,163 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-01 11:01:17,169 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 11:01:17" (1/1) ... [2024-11-01 11:01:17,202 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 11:01:17" (1/1) ... [2024-11-01 11:01:17,246 INFO L138 Inliner]: procedures = 95, calls = 129, calls flagged for inlining = 41, calls inlined = 36, statements flattened = 557 [2024-11-01 11:01:17,246 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-01 11:01:17,247 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-01 11:01:17,247 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-01 11:01:17,247 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-01 11:01:17,258 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 11:01:17" (1/1) ... [2024-11-01 11:01:17,259 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 11:01:17" (1/1) ... [2024-11-01 11:01:17,270 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 11:01:17" (1/1) ... [2024-11-01 11:01:17,343 INFO L175 MemorySlicer]: Split 42 memory accesses to 3 slices as follows [2, 15, 25]. 60 percent of accesses are in the largest equivalence class. The 6 initializations are split as follows [2, 4, 0]. The 29 writes are split as follows [0, 4, 25]. [2024-11-01 11:01:17,343 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 11:01:17" (1/1) ... [2024-11-01 11:01:17,344 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 11:01:17" (1/1) ... [2024-11-01 11:01:17,366 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 11:01:17" (1/1) ... [2024-11-01 11:01:17,373 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 11:01:17" (1/1) ... [2024-11-01 11:01:17,383 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 11:01:17" (1/1) ... [2024-11-01 11:01:17,387 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 11:01:17" (1/1) ... [2024-11-01 11:01:17,393 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-01 11:01:17,394 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-01 11:01:17,394 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-01 11:01:17,394 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-01 11:01:17,395 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 11:01:17" (1/1) ... [2024-11-01 11:01:17,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-01 11:01:17,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 11:01:17,424 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) [2024-11-01 11:01:17,426 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 [2024-11-01 11:01:17,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-01 11:01:17,445 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2024-11-01 11:01:17,446 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2024-11-01 11:01:17,446 INFO L130 BoogieDeclarations]: Found specification of procedure iio_interrupt_trigger_probe [2024-11-01 11:01:17,447 INFO L138 BoogieDeclarations]: Found implementation of procedure iio_interrupt_trigger_probe [2024-11-01 11:01:17,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-01 11:01:17,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-01 11:01:17,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-01 11:01:17,448 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8#0 [2024-11-01 11:01:17,448 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8#1 [2024-11-01 11:01:17,448 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8#2 [2024-11-01 11:01:17,448 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2024-11-01 11:01:17,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2024-11-01 11:01:17,449 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-01 11:01:17,449 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-01 11:01:17,449 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-11-01 11:01:17,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-01 11:01:17,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-01 11:01:17,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-01 11:01:17,450 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2024-11-01 11:01:17,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2024-11-01 11:01:17,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2024-11-01 11:01:17,450 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2024-11-01 11:01:17,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-01 11:01:17,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-01 11:01:17,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-01 11:01:17,450 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2024-11-01 11:01:17,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2024-11-01 11:01:17,451 INFO L130 BoogieDeclarations]: Found specification of procedure iio_trigger_put [2024-11-01 11:01:17,451 INFO L138 BoogieDeclarations]: Found implementation of procedure iio_trigger_put [2024-11-01 11:01:17,451 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2024-11-01 11:01:17,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2024-11-01 11:01:17,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-01 11:01:17,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-01 11:01:17,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-01 11:01:17,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-11-01 11:01:17,453 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2024-11-01 11:01:17,453 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2024-11-01 11:01:17,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-01 11:01:17,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-01 11:01:17,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-01 11:01:17,453 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2024-11-01 11:01:17,454 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2024-11-01 11:01:17,454 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2024-11-01 11:01:17,454 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2024-11-01 11:01:17,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-01 11:01:17,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-01 11:01:17,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-01 11:01:17,454 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2024-11-01 11:01:17,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2024-11-01 11:01:17,454 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2024-11-01 11:01:17,455 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2024-11-01 11:01:17,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4#0 [2024-11-01 11:01:17,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4#1 [2024-11-01 11:01:17,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4#2 [2024-11-01 11:01:17,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#0 [2024-11-01 11:01:17,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#1 [2024-11-01 11:01:17,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#2 [2024-11-01 11:01:17,455 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-01 11:01:17,455 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-01 11:01:17,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-01 11:01:17,456 INFO L130 BoogieDeclarations]: Found specification of procedure iio_interrupt_trigger_remove [2024-11-01 11:01:17,456 INFO L138 BoogieDeclarations]: Found implementation of procedure iio_interrupt_trigger_remove [2024-11-01 11:01:17,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-01 11:01:17,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-01 11:01:17,778 INFO L238 CfgBuilder]: Building ICFG [2024-11-01 11:01:17,781 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-01 11:01:18,062 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2024-11-01 11:01:22,515 INFO L? ?]: Removed 335 outVars from TransFormulas that were not future-live. [2024-11-01 11:01:22,515 INFO L287 CfgBuilder]: Performing block encoding [2024-11-01 11:01:22,544 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-01 11:01:22,546 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-01 11:01:22,546 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 11:01:22 BoogieIcfgContainer [2024-11-01 11:01:22,547 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-01 11:01:22,550 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-01 11:01:22,550 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-01 11:01:22,553 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-01 11:01:22,553 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.11 11:01:16" (1/3) ... [2024-11-01 11:01:22,554 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79b8c2a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 11:01:22, skipping insertion in model container [2024-11-01 11:01:22,554 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 11:01:17" (2/3) ... [2024-11-01 11:01:22,554 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79b8c2a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 11:01:22, skipping insertion in model container [2024-11-01 11:01:22,555 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 11:01:22" (3/3) ... [2024-11-01 11:01:22,556 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--iio--trigger--iio-trig-interrupt.ko-entry_point.cil.out.i [2024-11-01 11:01:22,568 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-01 11:01:22,569 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-01 11:01:22,629 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-01 11:01:22,635 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;@16c12f91, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-01 11:01:22,635 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-01 11:01:22,639 INFO L276 IsEmpty]: Start isEmpty. Operand has 196 states, 147 states have (on average 1.3605442176870748) internal successors, (200), 157 states have internal predecessors, (200), 33 states have call successors, (33), 15 states have call predecessors, (33), 14 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-01 11:01:22,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-01 11:01:22,648 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 11:01:22,649 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 11:01:22,649 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 11:01:22,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 11:01:22,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1261264738, now seen corresponding path program 1 times [2024-11-01 11:01:22,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 11:01:22,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1027385121] [2024-11-01 11:01:22,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 11:01:22,672 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-01 11:01:22,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-01 11:01:22,694 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-01 11:01:22,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2024-11-01 11:01:23,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 11:01:23,068 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-01 11:01:23,072 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 11:01:23,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-01 11:01:23,186 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 11:01:23,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-01 11:01:23,240 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 11:01:23,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1027385121] [2024-11-01 11:01:23,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1027385121] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 11:01:23,241 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 11:01:23,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-01 11:01:23,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080922555] [2024-11-01 11:01:23,243 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 11:01:23,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-01 11:01:23,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 11:01:23,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-01 11:01:23,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-01 11:01:23,282 INFO L87 Difference]: Start difference. First operand has 196 states, 147 states have (on average 1.3605442176870748) internal successors, (200), 157 states have internal predecessors, (200), 33 states have call successors, (33), 15 states have call predecessors, (33), 14 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-01 11:01:23,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 11:01:23,357 INFO L93 Difference]: Finished difference Result 385 states and 526 transitions. [2024-11-01 11:01:23,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-01 11:01:23,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-01 11:01:23,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 11:01:23,369 INFO L225 Difference]: With dead ends: 385 [2024-11-01 11:01:23,370 INFO L226 Difference]: Without dead ends: 177 [2024-11-01 11:01:23,375 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-01 11:01:23,380 INFO L432 NwaCegarLoop]: 250 mSDtfsCounter, 239 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 11:01:23,381 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 250 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 11:01:23,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2024-11-01 11:01:23,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2024-11-01 11:01:23,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 136 states have (on average 1.3088235294117647) internal successors, (178), 138 states have internal predecessors, (178), 27 states have call successors, (27), 14 states have call predecessors, (27), 13 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-01 11:01:23,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 231 transitions. [2024-11-01 11:01:23,450 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 231 transitions. Word has length 16 [2024-11-01 11:01:23,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 11:01:23,450 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 231 transitions. [2024-11-01 11:01:23,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-01 11:01:23,451 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 231 transitions. [2024-11-01 11:01:23,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-01 11:01:23,455 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 11:01:23,455 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 11:01:23,461 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (2)] Ended with exit code 0 [2024-11-01 11:01:23,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-01 11:01:23,657 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 11:01:23,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 11:01:23,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1058202050, now seen corresponding path program 1 times [2024-11-01 11:01:23,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 11:01:23,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1328075749] [2024-11-01 11:01:23,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 11:01:23,658 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-01 11:01:23,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-01 11:01:23,662 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-01 11:01:23,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2024-11-01 11:01:23,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 11:01:23,947 INFO L255 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-01 11:01:23,949 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 11:01:23,989 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-01 11:01:23,989 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 11:01:24,078 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-01 11:01:24,078 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 11:01:24,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1328075749] [2024-11-01 11:01:24,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1328075749] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 11:01:24,079 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 11:01:24,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-01 11:01:24,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981545329] [2024-11-01 11:01:24,079 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 11:01:24,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-01 11:01:24,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 11:01:24,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-01 11:01:24,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-01 11:01:24,081 INFO L87 Difference]: Start difference. First operand 177 states and 231 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-01 11:01:24,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 11:01:24,212 INFO L93 Difference]: Finished difference Result 393 states and 520 transitions. [2024-11-01 11:01:24,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-01 11:01:24,213 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 46 [2024-11-01 11:01:24,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 11:01:24,215 INFO L225 Difference]: With dead ends: 393 [2024-11-01 11:01:24,215 INFO L226 Difference]: Without dead ends: 219 [2024-11-01 11:01:24,216 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-01 11:01:24,220 INFO L432 NwaCegarLoop]: 230 mSDtfsCounter, 56 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-01 11:01:24,221 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 446 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-01 11:01:24,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2024-11-01 11:01:24,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 218. [2024-11-01 11:01:24,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 172 states have (on average 1.3313953488372092) internal successors, (229), 174 states have internal predecessors, (229), 31 states have call successors, (31), 15 states have call predecessors, (31), 14 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-01 11:01:24,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 290 transitions. [2024-11-01 11:01:24,249 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 290 transitions. Word has length 46 [2024-11-01 11:01:24,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 11:01:24,250 INFO L471 AbstractCegarLoop]: Abstraction has 218 states and 290 transitions. [2024-11-01 11:01:24,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-01 11:01:24,250 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 290 transitions. [2024-11-01 11:01:24,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-01 11:01:24,253 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 11:01:24,253 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 11:01:24,260 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (3)] Ended with exit code 0 [2024-11-01 11:01:24,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-01 11:01:24,458 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 11:01:24,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 11:01:24,459 INFO L85 PathProgramCache]: Analyzing trace with hash -961530910, now seen corresponding path program 1 times [2024-11-01 11:01:24,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 11:01:24,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1995824824] [2024-11-01 11:01:24,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 11:01:24,460 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-01 11:01:24,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-01 11:01:24,461 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-01 11:01:24,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-11-01 11:01:24,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 11:01:24,951 WARN L253 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 347 conjuncts are in the unsatisfiable core [2024-11-01 11:01:24,977 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 11:01:25,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-01 11:01:25,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-01 11:01:25,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2024-11-01 11:01:26,814 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-01 11:01:26,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2024-11-01 11:01:27,446 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-01 11:01:27,446 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 11:01:28,492 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-01 11:01:28,492 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 11:01:28,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1995824824] [2024-11-01 11:01:28,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1995824824] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 11:01:28,493 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 11:01:28,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 6] total 21 [2024-11-01 11:01:28,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572880881] [2024-11-01 11:01:28,493 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 11:01:28,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-01 11:01:28,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 11:01:28,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-01 11:01:28,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2024-11-01 11:01:28,501 INFO L87 Difference]: Start difference. First operand 218 states and 290 transitions. Second operand has 21 states, 20 states have (on average 4.6) internal successors, (92), 16 states have internal predecessors, (92), 6 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2024-11-01 11:01:32,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-01 11:01:36,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-01 11:01:40,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-01 11:01:44,544 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-01 11:01:48,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-01 11:01:52,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-01 11:01:56,576 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-01 11:02:00,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-01 11:02:04,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-01 11:02:08,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-01 11:02:12,622 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-01 11:02:16,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-01 11:02:45,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 11:02:45,291 INFO L93 Difference]: Finished difference Result 984 states and 1313 transitions. [2024-11-01 11:02:45,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-01 11:02:45,293 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 4.6) internal successors, (92), 16 states have internal predecessors, (92), 6 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) Word has length 71 [2024-11-01 11:02:45,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 11:02:45,301 INFO L225 Difference]: With dead ends: 984 [2024-11-01 11:02:45,302 INFO L226 Difference]: Without dead ends: 769 [2024-11-01 11:02:45,308 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 125 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 843 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=407, Invalid=3133, Unknown=0, NotChecked=0, Total=3540 [2024-11-01 11:02:45,310 INFO L432 NwaCegarLoop]: 228 mSDtfsCounter, 936 mSDsluCounter, 2747 mSDsCounter, 0 mSdLazyCounter, 1963 mSolverCounterSat, 253 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 65.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 947 SdHoareTripleChecker+Valid, 2975 SdHoareTripleChecker+Invalid, 2228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 1963 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 66.5s IncrementalHoareTripleChecker+Time [2024-11-01 11:02:45,310 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [947 Valid, 2975 Invalid, 2228 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [253 Valid, 1963 Invalid, 12 Unknown, 0 Unchecked, 66.5s Time] [2024-11-01 11:02:45,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2024-11-01 11:02:45,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 639. [2024-11-01 11:02:45,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 501 states have (on average 1.3313373253493015) internal successors, (667), 504 states have internal predecessors, (667), 86 states have call successors, (86), 50 states have call predecessors, (86), 51 states have return successors, (97), 87 states have call predecessors, (97), 85 states have call successors, (97) [2024-11-01 11:02:45,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 850 transitions. [2024-11-01 11:02:45,401 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 850 transitions. Word has length 71 [2024-11-01 11:02:45,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 11:02:45,401 INFO L471 AbstractCegarLoop]: Abstraction has 639 states and 850 transitions. [2024-11-01 11:02:45,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 4.6) internal successors, (92), 16 states have internal predecessors, (92), 6 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2024-11-01 11:02:45,402 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 850 transitions. [2024-11-01 11:02:45,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-01 11:02:45,405 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 11:02:45,406 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-01 11:02:45,410 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2024-11-01 11:02:45,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-01 11:02:45,607 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 11:02:45,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 11:02:45,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1474244522, now seen corresponding path program 1 times [2024-11-01 11:02:45,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 11:02:45,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [648837211] [2024-11-01 11:02:45,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 11:02:45,608 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-01 11:02:45,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-01 11:02:45,612 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-01 11:02:45,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2024-11-01 11:02:45,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 11:02:45,887 INFO L255 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-01 11:02:45,889 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 11:02:46,071 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-01 11:02:46,071 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 11:02:46,289 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-01 11:02:46,289 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 11:02:46,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [648837211] [2024-11-01 11:02:46,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [648837211] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 11:02:46,290 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 11:02:46,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2024-11-01 11:02:46,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354646045] [2024-11-01 11:02:46,290 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 11:02:46,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-01 11:02:46,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 11:02:46,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-01 11:02:46,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-01 11:02:46,291 INFO L87 Difference]: Start difference. First operand 639 states and 850 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-01 11:02:50,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-01 11:02:50,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 11:02:50,787 INFO L93 Difference]: Finished difference Result 2078 states and 2773 transitions. [2024-11-01 11:02:50,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-01 11:02:50,790 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 74 [2024-11-01 11:02:50,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 11:02:50,810 INFO L225 Difference]: With dead ends: 2078 [2024-11-01 11:02:50,811 INFO L226 Difference]: Without dead ends: 1442 [2024-11-01 11:02:50,822 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-01 11:02:50,823 INFO L432 NwaCegarLoop]: 313 mSDtfsCounter, 462 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 72 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-01 11:02:50,827 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [462 Valid, 718 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 22 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2024-11-01 11:02:50,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1442 states. [2024-11-01 11:02:51,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1442 to 1431. [2024-11-01 11:02:51,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1431 states, 1141 states have (on average 1.3251533742331287) internal successors, (1512), 1147 states have internal predecessors, (1512), 177 states have call successors, (177), 109 states have call predecessors, (177), 112 states have return successors, (200), 180 states have call predecessors, (200), 176 states have call successors, (200) [2024-11-01 11:02:51,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1431 states to 1431 states and 1889 transitions. [2024-11-01 11:02:51,042 INFO L78 Accepts]: Start accepts. Automaton has 1431 states and 1889 transitions. Word has length 74 [2024-11-01 11:02:51,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 11:02:51,042 INFO L471 AbstractCegarLoop]: Abstraction has 1431 states and 1889 transitions. [2024-11-01 11:02:51,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-01 11:02:51,043 INFO L276 IsEmpty]: Start isEmpty. Operand 1431 states and 1889 transitions. [2024-11-01 11:02:51,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-01 11:02:51,050 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 11:02:51,050 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 11:02:51,057 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2024-11-01 11:02:51,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-01 11:02:51,253 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 11:02:51,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 11:02:51,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1835113710, now seen corresponding path program 1 times [2024-11-01 11:02:51,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 11:02:51,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [36562460] [2024-11-01 11:02:51,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 11:02:51,254 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-01 11:02:51,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-01 11:02:51,256 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-01 11:02:51,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2024-11-01 11:02:51,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 11:02:51,536 WARN L253 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 356 conjuncts are in the unsatisfiable core [2024-11-01 11:02:51,555 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 11:02:52,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-01 11:02:52,092 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-01 11:02:52,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2024-11-01 11:02:54,601 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-01 11:02:54,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2024-11-01 11:02:55,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-01 11:02:55,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-01 11:02:55,773 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-01 11:02:55,867 INFO L349 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2024-11-01 11:02:55,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 30 [2024-11-01 11:02:56,978 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-01 11:02:56,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 44 [2024-11-01 11:02:58,637 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-01 11:02:58,637 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 11:03:00,828 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-01 11:03:00,828 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 11:03:00,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [36562460] [2024-11-01 11:03:00,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [36562460] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 11:03:00,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 11:03:00,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 6] total 30 [2024-11-01 11:03:00,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400907375] [2024-11-01 11:03:00,829 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 11:03:00,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-01 11:03:00,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 11:03:00,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-01 11:03:00,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=780, Unknown=0, NotChecked=0, Total=870 [2024-11-01 11:03:00,831 INFO L87 Difference]: Start difference. First operand 1431 states and 1889 transitions. Second operand has 30 states, 28 states have (on average 3.7142857142857144) internal successors, (104), 23 states have internal predecessors, (104), 8 states have call successors, (17), 8 states have call predecessors, (17), 8 states have return successors, (12), 8 states have call predecessors, (12), 7 states have call successors, (12)