/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 'cvc4 --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-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-04 18:49:11,114 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-04 18:49:11,183 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-04 18:49:11,190 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-04 18:49:11,190 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-04 18:49:11,211 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-04 18:49:11,212 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-04 18:49:11,212 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-04 18:49:11,213 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-04 18:49:11,213 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-04 18:49:11,213 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-04 18:49:11,214 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-04 18:49:11,214 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-04 18:49:11,215 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-04 18:49:11,215 INFO L153 SettingsManager]: * Use SBE=true [2024-11-04 18:49:11,215 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-04 18:49:11,216 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-04 18:49:11,216 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-04 18:49:11,216 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-04 18:49:11,216 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-04 18:49:11,217 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-04 18:49:11,220 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-04 18:49:11,220 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-04 18:49:11,220 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-04 18:49:11,221 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-04 18:49:11,221 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-04 18:49:11,221 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-04 18:49:11,221 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-04 18:49:11,222 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-04 18:49:11,222 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-04 18:49:11,222 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-04 18:49:11,222 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-04 18:49:11,223 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-04 18:49:11,223 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-04 18:49:11,226 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-04 18:49:11,226 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-04 18:49:11,226 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-04 18:49:11,226 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-04 18:49:11,226 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-04 18:49:11,227 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-04 18:49:11,227 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-04 18:49:11,228 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt [2024-11-04 18:49:11,453 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-04 18:49:11,485 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-04 18:49:11,487 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-04 18:49:11,488 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-04 18:49:11,489 INFO L274 PluginConnector]: CDTParser initialized [2024-11-04 18:49:11,490 INFO L431 ainManager$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-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i [2024-11-04 18:49:12,885 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-04 18:49:13,317 INFO L384 CDTParser]: Found 1 translation units. [2024-11-04 18:49:13,320 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i [2024-11-04 18:49:13,360 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8e0b2af9/61ab7922e83940b4b269eceee847c650/FLAG8d2768a71 [2024-11-04 18:49:13,497 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8e0b2af9/61ab7922e83940b4b269eceee847c650 [2024-11-04 18:49:13,499 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-04 18:49:13,500 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-04 18:49:13,501 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-04 18:49:13,502 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-04 18:49:13,506 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-04 18:49:13,506 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 06:49:13" (1/1) ... [2024-11-04 18:49:13,507 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f274c63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:49:13, skipping insertion in model container [2024-11-04 18:49:13,507 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 06:49:13" (1/1) ... [2024-11-04 18:49:13,632 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-04 18:49:14,419 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 18:49:14,424 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 18:49:14,425 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 18:49:14,425 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 18:49:14,425 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 18:49:14,426 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 18:49:14,427 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 18:49:14,427 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 18:49:14,450 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-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i[185252,185265] [2024-11-04 18:49:14,694 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 18:49:14,696 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-04 18:49:14,740 INFO L200 MainTranslator]: Completed pre-run [2024-11-04 18:49:14,928 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-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i[185252,185265] [2024-11-04 18:49:14,951 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-04 18:49:15,045 INFO L204 MainTranslator]: Completed translation [2024-11-04 18:49:15,047 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:49:15 WrapperNode [2024-11-04 18:49:15,048 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-04 18:49:15,049 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-04 18:49:15,049 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-04 18:49:15,049 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-04 18:49:15,055 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:49:15" (1/1) ... [2024-11-04 18:49:15,109 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:49:15" (1/1) ... [2024-11-04 18:49:15,182 INFO L138 Inliner]: procedures = 127, calls = 555, calls flagged for inlining = 30, calls inlined = 25, statements flattened = 1085 [2024-11-04 18:49:15,182 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-04 18:49:15,183 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-04 18:49:15,183 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-04 18:49:15,183 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-04 18:49:15,193 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:49:15" (1/1) ... [2024-11-04 18:49:15,194 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:49:15" (1/1) ... [2024-11-04 18:49:15,211 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:49:15" (1/1) ... [2024-11-04 18:49:15,288 INFO L175 MemorySlicer]: Split 409 memory accesses to 13 slices as follows [2, 3, 188, 21, 21, 21, 21, 21, 21, 21, 21, 45, 3]. 46 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 0, 5, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. The 399 writes are split as follows [0, 2, 183, 21, 21, 21, 21, 21, 21, 21, 21, 45, 1]. [2024-11-04 18:49:15,291 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:49:15" (1/1) ... [2024-11-04 18:49:15,292 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:49:15" (1/1) ... [2024-11-04 18:49:15,344 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:49:15" (1/1) ... [2024-11-04 18:49:15,358 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:49:15" (1/1) ... [2024-11-04 18:49:15,379 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:49:15" (1/1) ... [2024-11-04 18:49:15,387 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:49:15" (1/1) ... [2024-11-04 18:49:15,399 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-04 18:49:15,400 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-04 18:49:15,400 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-04 18:49:15,400 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-04 18:49:15,401 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:49:15" (1/1) ... [2024-11-04 18:49:15,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-04 18:49:15,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 18:49:15,431 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) [2024-11-04 18:49:15,433 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 [2024-11-04 18:49:15,458 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-04 18:49:15,459 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-04 18:49:15,459 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-11-04 18:49:15,459 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2024-11-04 18:49:15,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2024-11-04 18:49:15,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#5 [2024-11-04 18:49:15,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#6 [2024-11-04 18:49:15,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#7 [2024-11-04 18:49:15,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#8 [2024-11-04 18:49:15,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#9 [2024-11-04 18:49:15,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#10 [2024-11-04 18:49:15,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#11 [2024-11-04 18:49:15,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#12 [2024-11-04 18:49:15,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-04 18:49:15,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-04 18:49:15,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-04 18:49:15,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-04 18:49:15,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-04 18:49:15,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-11-04 18:49:15,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2024-11-04 18:49:15,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2024-11-04 18:49:15,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#8 [2024-11-04 18:49:15,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#9 [2024-11-04 18:49:15,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#10 [2024-11-04 18:49:15,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#11 [2024-11-04 18:49:15,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#12 [2024-11-04 18:49:15,464 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2024-11-04 18:49:15,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2024-11-04 18:49:15,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2024-11-04 18:49:15,465 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2024-11-04 18:49:15,465 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_negative [2024-11-04 18:49:15,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_negative [2024-11-04 18:49:15,466 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2024-11-04 18:49:15,466 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2024-11-04 18:49:15,467 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2024-11-04 18:49:15,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2024-11-04 18:49:15,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4#0 [2024-11-04 18:49:15,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4#1 [2024-11-04 18:49:15,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4#2 [2024-11-04 18:49:15,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4#3 [2024-11-04 18:49:15,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4#4 [2024-11-04 18:49:15,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4#5 [2024-11-04 18:49:15,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4#6 [2024-11-04 18:49:15,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4#7 [2024-11-04 18:49:15,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4#8 [2024-11-04 18:49:15,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4#9 [2024-11-04 18:49:15,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4#10 [2024-11-04 18:49:15,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4#11 [2024-11-04 18:49:15,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4#12 [2024-11-04 18:49:15,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2#0 [2024-11-04 18:49:15,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2#1 [2024-11-04 18:49:15,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2#2 [2024-11-04 18:49:15,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2#3 [2024-11-04 18:49:15,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2#4 [2024-11-04 18:49:15,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2#5 [2024-11-04 18:49:15,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2#6 [2024-11-04 18:49:15,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2#7 [2024-11-04 18:49:15,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2#8 [2024-11-04 18:49:15,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2#9 [2024-11-04 18:49:15,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2#10 [2024-11-04 18:49:15,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2#11 [2024-11-04 18:49:15,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2#12 [2024-11-04 18:49:15,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#0 [2024-11-04 18:49:15,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#1 [2024-11-04 18:49:15,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#2 [2024-11-04 18:49:15,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#3 [2024-11-04 18:49:15,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#4 [2024-11-04 18:49:15,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#5 [2024-11-04 18:49:15,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#6 [2024-11-04 18:49:15,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#7 [2024-11-04 18:49:15,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#8 [2024-11-04 18:49:15,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#9 [2024-11-04 18:49:15,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#10 [2024-11-04 18:49:15,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#11 [2024-11-04 18:49:15,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#12 [2024-11-04 18:49:15,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8#0 [2024-11-04 18:49:15,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8#1 [2024-11-04 18:49:15,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8#2 [2024-11-04 18:49:15,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8#3 [2024-11-04 18:49:15,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8#4 [2024-11-04 18:49:15,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8#5 [2024-11-04 18:49:15,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8#6 [2024-11-04 18:49:15,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8#7 [2024-11-04 18:49:15,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8#8 [2024-11-04 18:49:15,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8#9 [2024-11-04 18:49:15,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8#10 [2024-11-04 18:49:15,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8#11 [2024-11-04 18:49:15,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8#12 [2024-11-04 18:49:15,476 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2024-11-04 18:49:15,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2024-11-04 18:49:15,476 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-04 18:49:15,476 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-04 18:49:15,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-04 18:49:15,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-04 18:49:15,477 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_udev [2024-11-04 18:49:15,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_udev [2024-11-04 18:49:15,477 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2024-11-04 18:49:15,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2024-11-04 18:49:15,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-04 18:49:15,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-04 18:49:15,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-04 18:49:15,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-04 18:49:15,478 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-04 18:49:15,478 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-04 18:49:15,478 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-04 18:49:15,478 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-04 18:49:15,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-04 18:49:15,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-11-04 18:49:15,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2024-11-04 18:49:15,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#10 [2024-11-04 18:49:15,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#11 [2024-11-04 18:49:15,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#12 [2024-11-04 18:49:15,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-04 18:49:15,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-04 18:49:15,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-04 18:49:15,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-04 18:49:15,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2024-11-04 18:49:15,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2024-11-04 18:49:15,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#5 [2024-11-04 18:49:15,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#6 [2024-11-04 18:49:15,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#7 [2024-11-04 18:49:15,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#8 [2024-11-04 18:49:15,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#9 [2024-11-04 18:49:15,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#10 [2024-11-04 18:49:15,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#11 [2024-11-04 18:49:15,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#12 [2024-11-04 18:49:15,481 INFO L130 BoogieDeclarations]: Found specification of procedure always_connected [2024-11-04 18:49:15,481 INFO L138 BoogieDeclarations]: Found implementation of procedure always_connected [2024-11-04 18:49:15,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-04 18:49:15,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-04 18:49:15,809 INFO L238 CfgBuilder]: Building ICFG [2024-11-04 18:49:15,811 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-04 18:49:15,843 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2024-11-04 18:49:26,686 INFO L? ?]: Removed 200 outVars from TransFormulas that were not future-live. [2024-11-04 18:49:26,686 INFO L287 CfgBuilder]: Performing block encoding [2024-11-04 18:49:26,705 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-04 18:49:26,706 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-04 18:49:26,707 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 06:49:26 BoogieIcfgContainer [2024-11-04 18:49:26,707 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-04 18:49:26,709 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-04 18:49:26,710 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-04 18:49:26,713 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-04 18:49:26,713 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 06:49:13" (1/3) ... [2024-11-04 18:49:26,714 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@661b631a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 06:49:26, skipping insertion in model container [2024-11-04 18:49:26,714 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 06:49:15" (2/3) ... [2024-11-04 18:49:26,714 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@661b631a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 06:49:26, skipping insertion in model container [2024-11-04 18:49:26,715 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 06:49:26" (3/3) ... [2024-11-04 18:49:26,717 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i [2024-11-04 18:49:26,731 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-04 18:49:26,732 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-04 18:49:26,810 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-04 18:49:26,816 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;@189a36b8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-04 18:49:26,817 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-04 18:49:26,822 INFO L276 IsEmpty]: Start isEmpty. Operand has 186 states, 141 states have (on average 1.4539007092198581) internal successors, (205), 157 states have internal predecessors, (205), 34 states have call successors, (34), 10 states have call predecessors, (34), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-04 18:49:26,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-04 18:49:26,836 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 18:49:26,837 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 18:49:26,838 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 18:49:26,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 18:49:26,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1979045930, now seen corresponding path program 1 times [2024-11-04 18:49:26,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 18:49:26,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [161844086] [2024-11-04 18:49:26,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 18:49:26,855 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-04 18:49:26,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-04 18:49:26,860 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-04 18:49:26,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2024-11-04 18:49:55,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 18:49:55,313 INFO L255 TraceCheckSpWp]: Trace formula consists of 3089 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-04 18:49:55,324 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 18:49:55,602 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-04 18:49:55,603 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 18:49:58,555 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-04 18:49:58,556 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 18:49:58,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [161844086] [2024-11-04 18:49:58,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [161844086] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-04 18:49:58,557 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-04 18:49:58,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-04 18:49:58,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940201067] [2024-11-04 18:49:58,559 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-04 18:49:58,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-04 18:49:58,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 18:49:58,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-04 18:49:58,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-04 18:49:58,593 INFO L87 Difference]: Start difference. First operand has 186 states, 141 states have (on average 1.4539007092198581) internal successors, (205), 157 states have internal predecessors, (205), 34 states have call successors, (34), 10 states have call predecessors, (34), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-04 18:49:59,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 18:49:59,040 INFO L93 Difference]: Finished difference Result 492 states and 720 transitions. [2024-11-04 18:49:59,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-04 18:49:59,043 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 118 [2024-11-04 18:49:59,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 18:49:59,055 INFO L225 Difference]: With dead ends: 492 [2024-11-04 18:49:59,055 INFO L226 Difference]: Without dead ends: 283 [2024-11-04 18:49:59,059 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-04 18:49:59,062 INFO L432 NwaCegarLoop]: 254 mSDtfsCounter, 199 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-04 18:49:59,062 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 478 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-04 18:49:59,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2024-11-04 18:49:59,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 269. [2024-11-04 18:49:59,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 221 states have (on average 1.420814479638009) internal successors, (314), 226 states have internal predecessors, (314), 34 states have call successors, (34), 14 states have call predecessors, (34), 13 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-04 18:49:59,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 376 transitions. [2024-11-04 18:49:59,123 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 376 transitions. Word has length 118 [2024-11-04 18:49:59,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 18:49:59,124 INFO L471 AbstractCegarLoop]: Abstraction has 269 states and 376 transitions. [2024-11-04 18:49:59,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-04 18:49:59,124 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 376 transitions. [2024-11-04 18:49:59,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-04 18:49:59,127 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 18:49:59,127 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 18:49:59,144 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0 [2024-11-04 18:49:59,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-04 18:49:59,329 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 18:49:59,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 18:49:59,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1151509421, now seen corresponding path program 1 times [2024-11-04 18:49:59,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 18:49:59,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [757381804] [2024-11-04 18:49:59,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 18:49:59,331 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-04 18:49:59,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-04 18:49:59,333 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-04 18:49:59,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2024-11-04 18:50:27,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 18:50:27,437 INFO L255 TraceCheckSpWp]: Trace formula consists of 3078 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-04 18:50:27,444 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 18:50:32,748 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-04 18:50:32,748 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 18:50:36,704 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-04 18:50:36,705 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 18:50:36,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [757381804] [2024-11-04 18:50:36,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [757381804] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-04 18:50:36,705 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-04 18:50:36,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 3 [2024-11-04 18:50:36,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677455422] [2024-11-04 18:50:36,705 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-04 18:50:36,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-04 18:50:36,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 18:50:36,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-04 18:50:36,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-04 18:50:36,708 INFO L87 Difference]: Start difference. First operand 269 states and 376 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-04 18:50:36,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 18:50:36,753 INFO L93 Difference]: Finished difference Result 271 states and 377 transitions. [2024-11-04 18:50:36,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-04 18:50:36,754 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 117 [2024-11-04 18:50:36,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 18:50:36,757 INFO L225 Difference]: With dead ends: 271 [2024-11-04 18:50:36,757 INFO L226 Difference]: Without dead ends: 268 [2024-11-04 18:50:36,757 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-04 18:50:36,759 INFO L432 NwaCegarLoop]: 229 mSDtfsCounter, 181 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-04 18:50:36,759 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 229 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-04 18:50:36,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2024-11-04 18:50:36,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2024-11-04 18:50:36,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 221 states have (on average 1.416289592760181) internal successors, (313), 225 states have internal predecessors, (313), 33 states have call successors, (33), 14 states have call predecessors, (33), 13 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-04 18:50:36,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 374 transitions. [2024-11-04 18:50:36,798 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 374 transitions. Word has length 117 [2024-11-04 18:50:36,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 18:50:36,799 INFO L471 AbstractCegarLoop]: Abstraction has 268 states and 374 transitions. [2024-11-04 18:50:36,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-04 18:50:36,799 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 374 transitions. [2024-11-04 18:50:36,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-04 18:50:36,802 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 18:50:36,803 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 18:50:36,834 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Ended with exit code 0 [2024-11-04 18:50:37,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-04 18:50:37,004 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 18:50:37,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 18:50:37,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1337028027, now seen corresponding path program 1 times [2024-11-04 18:50:37,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 18:50:37,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1564506440] [2024-11-04 18:50:37,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 18:50:37,006 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-04 18:50:37,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-04 18:50:37,009 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-04 18:50:37,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process