/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-b75d321-m [2024-11-05 00:14:48,935 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-05 00:14:49,002 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-05 00:14:49,011 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-05 00:14:49,011 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-05 00:14:49,042 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-05 00:14:49,042 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-05 00:14:49,043 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-05 00:14:49,043 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-05 00:14:49,044 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-05 00:14:49,044 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-05 00:14:49,044 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-05 00:14:49,045 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-05 00:14:49,049 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-05 00:14:49,049 INFO L153 SettingsManager]: * Use SBE=true [2024-11-05 00:14:49,050 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-05 00:14:49,050 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-05 00:14:49,050 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-05 00:14:49,050 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-05 00:14:49,051 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-05 00:14:49,051 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-05 00:14:49,051 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-05 00:14:49,052 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-05 00:14:49,052 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-05 00:14:49,052 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-05 00:14:49,052 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-05 00:14:49,053 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-05 00:14:49,053 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-05 00:14:49,053 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-05 00:14:49,053 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-05 00:14:49,054 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-05 00:14:49,054 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-05 00:14:49,054 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-05 00:14:49,054 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-05 00:14:49,055 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-05 00:14:49,055 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-05 00:14:49,055 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-05 00:14:49,059 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-05 00:14:49,059 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-05 00:14:49,059 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-05 00:14:49,059 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-05 00:14:49,059 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc5 --incremental --print-success --lang smt [2024-11-05 00:14:49,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-05 00:14:49,338 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-05 00:14:49,344 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-05 00:14:49,345 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-05 00:14:49,346 INFO L274 PluginConnector]: CDTParser initialized [2024-11-05 00:14:49,348 INFO L431 ainManager$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 [2024-11-05 00:14:50,948 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-05 00:14:51,349 INFO L384 CDTParser]: Found 1 translation units. [2024-11-05 00:14:51,350 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 [2024-11-05 00:14:51,391 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8598b00da/1f7dcdfaeddb45da90486c2abb87a3da/FLAGa840ea8ce [2024-11-05 00:14:51,410 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8598b00da/1f7dcdfaeddb45da90486c2abb87a3da [2024-11-05 00:14:51,413 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-05 00:14:51,415 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-05 00:14:51,416 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-05 00:14:51,417 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-05 00:14:51,422 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-05 00:14:51,423 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 12:14:51" (1/1) ... [2024-11-05 00:14:51,425 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6aa634a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:14:51, skipping insertion in model container [2024-11-05 00:14:51,425 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 12:14:51" (1/1) ... [2024-11-05 00:14:51,512 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-05 00:14:52,183 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 00:14:52,263 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 00:14:52,281 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 00:14:52,282 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 00:14:52,283 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 00:14:52,287 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 00:14:52,288 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 00:14:52,288 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 00:14:52,292 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 00:14:52,293 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 00:14:52,294 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 00:14:52,294 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 00:14:52,329 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 00:14:52,344 WARN L250 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] [2024-11-05 00:14:52,388 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 00:14:52,390 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 00:14:52,419 INFO L200 MainTranslator]: Completed pre-run [2024-11-05 00:14:52,572 WARN L250 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] [2024-11-05 00:14:52,585 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 00:14:52,628 INFO L204 MainTranslator]: Completed translation [2024-11-05 00:14:52,630 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:14:52 WrapperNode [2024-11-05 00:14:52,630 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-05 00:14:52,631 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-05 00:14:52,632 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-05 00:14:52,632 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-05 00:14:52,639 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:14:52" (1/1) ... [2024-11-05 00:14:52,671 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:14:52" (1/1) ... [2024-11-05 00:14:52,728 INFO L138 Inliner]: procedures = 95, calls = 129, calls flagged for inlining = 41, calls inlined = 36, statements flattened = 557 [2024-11-05 00:14:52,729 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-05 00:14:52,730 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-05 00:14:52,730 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-05 00:14:52,730 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-05 00:14:52,745 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:14:52" (1/1) ... [2024-11-05 00:14:52,746 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:14:52" (1/1) ... [2024-11-05 00:14:52,755 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:14:52" (1/1) ... [2024-11-05 00:14:52,826 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]. [2024-11-05 00:14:52,826 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:14:52" (1/1) ... [2024-11-05 00:14:52,826 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:14:52" (1/1) ... [2024-11-05 00:14:52,847 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:14:52" (1/1) ... [2024-11-05 00:14:52,853 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:14:52" (1/1) ... [2024-11-05 00:14:52,868 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:14:52" (1/1) ... [2024-11-05 00:14:52,879 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:14:52" (1/1) ... [2024-11-05 00:14:52,889 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-05 00:14:52,890 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-05 00:14:52,891 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-05 00:14:52,891 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-05 00:14:52,896 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:14:52" (1/1) ... [2024-11-05 00:14:52,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-05 00:14:52,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-05 00:14:52,936 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) [2024-11-05 00:14:52,938 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 [2024-11-05 00:14:52,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-05 00:14:52,963 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2024-11-05 00:14:52,963 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2024-11-05 00:14:52,963 INFO L130 BoogieDeclarations]: Found specification of procedure iio_interrupt_trigger_probe [2024-11-05 00:14:52,964 INFO L138 BoogieDeclarations]: Found implementation of procedure iio_interrupt_trigger_probe [2024-11-05 00:14:52,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-05 00:14:52,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-05 00:14:52,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-05 00:14:52,964 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8#0 [2024-11-05 00:14:52,964 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8#1 [2024-11-05 00:14:52,964 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8#2 [2024-11-05 00:14:52,965 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2024-11-05 00:14:52,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2024-11-05 00:14:52,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-05 00:14:52,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-05 00:14:52,966 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-11-05 00:14:52,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-05 00:14:52,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-05 00:14:52,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-05 00:14:52,966 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2024-11-05 00:14:52,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2024-11-05 00:14:52,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2024-11-05 00:14:52,966 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2024-11-05 00:14:52,967 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-05 00:14:52,967 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-05 00:14:52,967 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-05 00:14:52,967 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2024-11-05 00:14:52,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2024-11-05 00:14:52,967 INFO L130 BoogieDeclarations]: Found specification of procedure iio_trigger_put [2024-11-05 00:14:52,967 INFO L138 BoogieDeclarations]: Found implementation of procedure iio_trigger_put [2024-11-05 00:14:52,967 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2024-11-05 00:14:52,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2024-11-05 00:14:52,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-05 00:14:52,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-05 00:14:52,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-05 00:14:52,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-11-05 00:14:52,968 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2024-11-05 00:14:52,968 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2024-11-05 00:14:52,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-05 00:14:52,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-05 00:14:52,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-05 00:14:52,969 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2024-11-05 00:14:52,969 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2024-11-05 00:14:52,969 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2024-11-05 00:14:52,974 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2024-11-05 00:14:52,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-05 00:14:52,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-05 00:14:52,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-05 00:14:52,975 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2024-11-05 00:14:52,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2024-11-05 00:14:52,975 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2024-11-05 00:14:52,975 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2024-11-05 00:14:52,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4#0 [2024-11-05 00:14:52,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4#1 [2024-11-05 00:14:52,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4#2 [2024-11-05 00:14:52,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#0 [2024-11-05 00:14:52,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#1 [2024-11-05 00:14:52,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#2 [2024-11-05 00:14:52,976 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-05 00:14:52,976 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-05 00:14:52,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-05 00:14:52,976 INFO L130 BoogieDeclarations]: Found specification of procedure iio_interrupt_trigger_remove [2024-11-05 00:14:52,977 INFO L138 BoogieDeclarations]: Found implementation of procedure iio_interrupt_trigger_remove [2024-11-05 00:14:52,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-05 00:14:52,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-05 00:14:53,280 INFO L238 CfgBuilder]: Building ICFG [2024-11-05 00:14:53,283 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-05 00:14:53,677 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2024-11-05 00:14:58,175 INFO L? ?]: Removed 335 outVars from TransFormulas that were not future-live. [2024-11-05 00:14:58,175 INFO L287 CfgBuilder]: Performing block encoding [2024-11-05 00:14:58,189 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-05 00:14:58,189 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-05 00:14:58,190 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 12:14:58 BoogieIcfgContainer [2024-11-05 00:14:58,190 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-05 00:14:58,192 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-05 00:14:58,192 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-05 00:14:58,194 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-05 00:14:58,195 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 12:14:51" (1/3) ... [2024-11-05 00:14:58,195 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2087c482 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 12:14:58, skipping insertion in model container [2024-11-05 00:14:58,195 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:14:52" (2/3) ... [2024-11-05 00:14:58,195 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2087c482 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 12:14:58, skipping insertion in model container [2024-11-05 00:14:58,196 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 12:14:58" (3/3) ... [2024-11-05 00:14:58,197 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 [2024-11-05 00:14:58,209 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-05 00:14:58,209 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-05 00:14:58,263 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-05 00:14:58,268 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;@5501270f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-05 00:14:58,268 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-05 00:14:58,272 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) [2024-11-05 00:14:58,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-05 00:14:58,280 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 00:14:58,281 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 00:14:58,281 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 00:14:58,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 00:14:58,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1261264738, now seen corresponding path program 1 times [2024-11-05 00:14:58,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 00:14:58,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [497569609] [2024-11-05 00:14:58,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 00:14:58,294 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 00:14:58,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 00:14:58,298 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) [2024-11-05 00:14:58,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2024-11-05 00:14:58,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 00:14:58,673 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-05 00:14:58,678 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 00:14:58,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-05 00:14:58,855 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 00:14:58,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-05 00:14:58,990 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 00:14:58,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [497569609] [2024-11-05 00:14:58,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [497569609] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 00:14:58,991 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 00:14:58,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-05 00:14:58,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071915054] [2024-11-05 00:14:58,996 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 00:14:59,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-05 00:14:59,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 00:14:59,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-05 00:14:59,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-05 00:14:59,026 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) [2024-11-05 00:14:59,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 00:14:59,107 INFO L93 Difference]: Finished difference Result 385 states and 526 transitions. [2024-11-05 00:14:59,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-05 00:14:59,112 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 [2024-11-05 00:14:59,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 00:14:59,123 INFO L225 Difference]: With dead ends: 385 [2024-11-05 00:14:59,123 INFO L226 Difference]: Without dead ends: 177 [2024-11-05 00:14:59,127 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 [2024-11-05 00:14:59,130 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 [2024-11-05 00:14:59,131 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] [2024-11-05 00:14:59,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2024-11-05 00:14:59,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2024-11-05 00:14:59,185 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) [2024-11-05 00:14:59,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 231 transitions. [2024-11-05 00:14:59,195 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 231 transitions. Word has length 16 [2024-11-05 00:14:59,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 00:14:59,195 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 231 transitions. [2024-11-05 00:14:59,195 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) [2024-11-05 00:14:59,196 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 231 transitions. [2024-11-05 00:14:59,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-05 00:14:59,199 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 00:14:59,199 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] [2024-11-05 00:14:59,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0 [2024-11-05 00:14:59,404 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 [2024-11-05 00:14:59,405 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 00:14:59,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 00:14:59,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1058202050, now seen corresponding path program 1 times [2024-11-05 00:14:59,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 00:14:59,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1598809997] [2024-11-05 00:14:59,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 00:14:59,406 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 00:14:59,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 00:14:59,409 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) [2024-11-05 00:14:59,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2024-11-05 00:14:59,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 00:14:59,727 INFO L255 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-05 00:14:59,730 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 00:14:59,771 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-05 00:14:59,772 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 00:14:59,845 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-05 00:14:59,846 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 00:14:59,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1598809997] [2024-11-05 00:14:59,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1598809997] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 00:14:59,846 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 00:14:59,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-05 00:14:59,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106197892] [2024-11-05 00:14:59,847 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 00:14:59,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-05 00:14:59,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 00:14:59,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-05 00:14:59,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-05 00:14:59,849 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) [2024-11-05 00:14:59,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 00:14:59,955 INFO L93 Difference]: Finished difference Result 393 states and 520 transitions. [2024-11-05 00:14:59,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-05 00:14:59,956 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 [2024-11-05 00:14:59,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 00:14:59,958 INFO L225 Difference]: With dead ends: 393 [2024-11-05 00:14:59,958 INFO L226 Difference]: Without dead ends: 219 [2024-11-05 00:14:59,960 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 [2024-11-05 00:14:59,961 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 [2024-11-05 00:14:59,961 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] [2024-11-05 00:14:59,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2024-11-05 00:14:59,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 218. [2024-11-05 00:14:59,981 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) [2024-11-05 00:14:59,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 290 transitions. [2024-11-05 00:14:59,983 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 290 transitions. Word has length 46 [2024-11-05 00:14:59,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 00:14:59,983 INFO L471 AbstractCegarLoop]: Abstraction has 218 states and 290 transitions. [2024-11-05 00:14:59,983 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) [2024-11-05 00:14:59,983 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 290 transitions. [2024-11-05 00:14:59,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-05 00:14:59,990 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 00:14:59,993 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] [2024-11-05 00:14:59,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (3)] Forceful destruction successful, exit code 0 [2024-11-05 00:15:00,194 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 [2024-11-05 00:15:00,194 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 00:15:00,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 00:15:00,195 INFO L85 PathProgramCache]: Analyzing trace with hash -961530910, now seen corresponding path program 1 times [2024-11-05 00:15:00,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 00:15:00,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127167215] [2024-11-05 00:15:00,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 00:15:00,196 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 00:15:00,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 00:15:00,199 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) [2024-11-05 00:15:00,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-11-05 00:15:00,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 00:15:00,567 WARN L253 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 347 conjuncts are in the unsatisfiable core [2024-11-05 00:15:00,650 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 00:15:01,550 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 [2024-11-05 00:15:01,562 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 [2024-11-05 00:15:01,829 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 [2024-11-05 00:15:03,510 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-05 00:15:03,510 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 [2024-11-05 00:15:04,680 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-05 00:15:04,681 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 00:15:05,711 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-05 00:15:05,711 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 00:15:05,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127167215] [2024-11-05 00:15:05,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1127167215] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 00:15:05,712 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 00:15:05,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 6] total 21 [2024-11-05 00:15:05,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755206646] [2024-11-05 00:15:05,712 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 00:15:05,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-05 00:15:05,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 00:15:05,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-05 00:15:05,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2024-11-05 00:15:05,714 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) [2024-11-05 00:15:09,733 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] [2024-11-05 00:15:13,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-05 00:15:17,750 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-05 00:15:21,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-05 00:15:25,766 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-05 00:15:29,774 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-05 00:15:33,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-05 00:15:37,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-05 00:15:41,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-05 00:15:45,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-05 00:15:49,823 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-05 00:15:53,833 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] [2024-11-05 00:16:22,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 00:16:22,608 INFO L93 Difference]: Finished difference Result 984 states and 1313 transitions. [2024-11-05 00:16:22,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-05 00:16:22,610 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 [2024-11-05 00:16:22,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 00:16:22,624 INFO L225 Difference]: With dead ends: 984 [2024-11-05 00:16:22,624 INFO L226 Difference]: Without dead ends: 769 [2024-11-05 00:16:22,629 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 125 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 843 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=407, Invalid=3133, Unknown=0, NotChecked=0, Total=3540 [2024-11-05 00:16:22,630 INFO L432 NwaCegarLoop]: 228 mSDtfsCounter, 936 mSDsluCounter, 2747 mSDsCounter, 0 mSdLazyCounter, 1963 mSolverCounterSat, 253 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 65.3s 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, 66.3s IncrementalHoareTripleChecker+Time [2024-11-05 00:16:22,631 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [947 Valid, 2975 Invalid, 2228 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [253 Valid, 1963 Invalid, 12 Unknown, 0 Unchecked, 66.3s Time] [2024-11-05 00:16:22,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2024-11-05 00:16:22,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 639. [2024-11-05 00:16:22,742 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) [2024-11-05 00:16:22,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 850 transitions. [2024-11-05 00:16:22,749 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 850 transitions. Word has length 71 [2024-11-05 00:16:22,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 00:16:22,750 INFO L471 AbstractCegarLoop]: Abstraction has 639 states and 850 transitions. [2024-11-05 00:16:22,750 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) [2024-11-05 00:16:22,751 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 850 transitions. [2024-11-05 00:16:22,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-05 00:16:22,754 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 00:16:22,754 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] [2024-11-05 00:16:22,761 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2024-11-05 00:16:22,958 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 [2024-11-05 00:16:22,959 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 00:16:22,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 00:16:22,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1474244522, now seen corresponding path program 1 times [2024-11-05 00:16:22,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 00:16:22,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [112938318] [2024-11-05 00:16:22,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 00:16:22,961 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 00:16:22,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 00:16:22,965 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) [2024-11-05 00:16:22,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2024-11-05 00:16:23,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 00:16:23,257 INFO L255 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-05 00:16:23,261 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 00:16:23,677 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-05 00:16:23,678 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 00:16:24,118 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-05 00:16:24,118 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 00:16:24,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [112938318] [2024-11-05 00:16:24,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [112938318] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 00:16:24,119 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 00:16:24,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2024-11-05 00:16:24,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817328563] [2024-11-05 00:16:24,119 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 00:16:24,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-05 00:16:24,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 00:16:24,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-05 00:16:24,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-05 00:16:24,121 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)