/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 bitwuzla -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--net--ppp--pppox.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-05 11:50:04,986 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-05 11:50:05,041 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 11:50:05,044 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-05 11:50:05,045 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-05 11:50:05,067 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-05 11:50:05,068 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-05 11:50:05,068 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-05 11:50:05,069 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-05 11:50:05,071 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-05 11:50:05,071 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-05 11:50:05,072 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-05 11:50:05,072 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-05 11:50:05,072 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-05 11:50:05,072 INFO L153 SettingsManager]: * Use SBE=true [2024-11-05 11:50:05,073 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-05 11:50:05,073 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-05 11:50:05,073 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-05 11:50:05,073 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-05 11:50:05,073 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-05 11:50:05,074 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-05 11:50:05,075 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-05 11:50:05,075 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-05 11:50:05,075 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-05 11:50:05,075 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-05 11:50:05,075 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-05 11:50:05,076 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-05 11:50:05,076 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-05 11:50:05,076 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-05 11:50:05,076 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-05 11:50:05,077 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-05 11:50:05,077 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-05 11:50:05,077 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-05 11:50:05,077 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-05 11:50:05,077 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-05 11:50:05,078 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-05 11:50:05,078 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-05 11:50:05,078 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-05 11:50:05,078 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-05 11:50:05,078 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-05 11:50:05,079 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-05 11:50:05,079 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> bitwuzla [2024-11-05 11:50:05,258 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-05 11:50:05,273 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-05 11:50:05,277 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-05 11:50:05,278 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-05 11:50:05,278 INFO L274 PluginConnector]: CDTParser initialized [2024-11-05 11:50:05,279 INFO L431 ainManager$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--net--ppp--pppox.ko-entry_point.cil.out.i [2024-11-05 11:50:06,452 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-05 11:50:06,753 INFO L384 CDTParser]: Found 1 translation units. [2024-11-05 11:50:06,754 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--ppp--pppox.ko-entry_point.cil.out.i [2024-11-05 11:50:06,784 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e3c5691f/ffb99bf0c9634842bd0028b58a4fc233/FLAGb31750a74 [2024-11-05 11:50:07,009 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e3c5691f/ffb99bf0c9634842bd0028b58a4fc233 [2024-11-05 11:50:07,010 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-05 11:50:07,011 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-05 11:50:07,012 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-05 11:50:07,013 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-05 11:50:07,016 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-05 11:50:07,017 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 11:50:07" (1/1) ... [2024-11-05 11:50:07,017 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f77d96a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:50:07, skipping insertion in model container [2024-11-05 11:50:07,017 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 11:50:07" (1/1) ... [2024-11-05 11:50:07,085 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-05 11:50:07,602 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 11:50:07,603 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 11:50:07,603 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 11:50:07,604 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 11:50:07,614 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--net--ppp--pppox.ko-entry_point.cil.out.i[183784,183797] [2024-11-05 11:50:07,637 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 11:50:07,638 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 11:50:07,661 INFO L200 MainTranslator]: Completed pre-run [2024-11-05 11:50:07,758 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_1": "=a" (__ret_pu): "0" (__pu_val), "c" ((int *)arg): "ebx"); [6057] [2024-11-05 11:50:07,760 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_2": "=a" (__ret_pu): "0" (__pu_val), "c" ((int *)arg): "ebx"); [6060] [2024-11-05 11:50:07,761 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_4": "=a" (__ret_pu): "0" (__pu_val), "c" ((int *)arg): "ebx"); [6063] [2024-11-05 11:50:07,761 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_8": "=a" (__ret_pu): "0" (__pu_val), "c" ((int *)arg): "ebx"); [6066] [2024-11-05 11:50:07,761 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_X": "=a" (__ret_pu): "0" (__pu_val), "c" ((int *)arg): "ebx"); [6069] [2024-11-05 11:50:07,773 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--net--ppp--pppox.ko-entry_point.cil.out.i[183784,183797] [2024-11-05 11:50:07,778 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 11:50:07,807 INFO L204 MainTranslator]: Completed translation [2024-11-05 11:50:07,808 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:50:07 WrapperNode [2024-11-05 11:50:07,808 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-05 11:50:07,809 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-05 11:50:07,809 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-05 11:50:07,809 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-05 11:50:07,814 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:50:07" (1/1) ... [2024-11-05 11:50:07,836 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:50:07" (1/1) ... [2024-11-05 11:50:07,865 INFO L138 Inliner]: procedures = 72, calls = 171, calls flagged for inlining = 23, calls inlined = 16, statements flattened = 353 [2024-11-05 11:50:07,865 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-05 11:50:07,866 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-05 11:50:07,866 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-05 11:50:07,866 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-05 11:50:07,877 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:50:07" (1/1) ... [2024-11-05 11:50:07,877 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:50:07" (1/1) ... [2024-11-05 11:50:07,886 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:50:07" (1/1) ... [2024-11-05 11:50:07,920 INFO L175 MemorySlicer]: Split 100 memory accesses to 7 slices as follows [2, 3, 4, 1, 9, 78, 3]. 78 percent of accesses are in the largest equivalence class. The 9 initializations are split as follows [2, 0, 0, 0, 4, 0, 3]. The 81 writes are split as follows [0, 0, 2, 1, 0, 78, 0]. [2024-11-05 11:50:07,921 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:50:07" (1/1) ... [2024-11-05 11:50:07,921 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:50:07" (1/1) ... [2024-11-05 11:50:07,939 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:50:07" (1/1) ... [2024-11-05 11:50:07,941 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:50:07" (1/1) ... [2024-11-05 11:50:07,945 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:50:07" (1/1) ... [2024-11-05 11:50:07,947 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:50:07" (1/1) ... [2024-11-05 11:50:07,951 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-05 11:50:07,952 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-05 11:50:07,952 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-05 11:50:07,952 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-05 11:50:07,953 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:50:07" (1/1) ... [2024-11-05 11:50:07,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-05 11:50:07,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-05 11:50:07,981 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 11:50:07,982 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 11:50:07,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-05 11:50:07,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-05 11:50:07,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-05 11:50:07,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-05 11:50:07,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-11-05 11:50:07,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2024-11-05 11:50:07,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2024-11-05 11:50:07,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#5 [2024-11-05 11:50:07,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#6 [2024-11-05 11:50:07,999 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2024-11-05 11:50:07,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2024-11-05 11:50:07,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2024-11-05 11:50:07,999 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2024-11-05 11:50:07,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-05 11:50:07,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-05 11:50:07,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-05 11:50:08,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-05 11:50:08,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-05 11:50:08,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-05 11:50:08,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-05 11:50:08,000 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2024-11-05 11:50:08,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2024-11-05 11:50:08,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-05 11:50:08,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-05 11:50:08,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-05 11:50:08,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-05 11:50:08,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-05 11:50:08,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-05 11:50:08,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-05 11:50:08,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-05 11:50:08,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-05 11:50:08,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-05 11:50:08,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-05 11:50:08,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2024-11-05 11:50:08,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2024-11-05 11:50:08,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#5 [2024-11-05 11:50:08,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#6 [2024-11-05 11:50:08,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2024-11-05 11:50:08,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2024-11-05 11:50:08,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2024-11-05 11:50:08,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2024-11-05 11:50:08,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#4 [2024-11-05 11:50:08,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#5 [2024-11-05 11:50:08,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#6 [2024-11-05 11:50:08,004 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2024-11-05 11:50:08,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2024-11-05 11:50:08,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#0 [2024-11-05 11:50:08,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#1 [2024-11-05 11:50:08,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#2 [2024-11-05 11:50:08,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#3 [2024-11-05 11:50:08,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#4 [2024-11-05 11:50:08,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#5 [2024-11-05 11:50:08,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#6 [2024-11-05 11:50:08,005 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2024-11-05 11:50:08,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2024-11-05 11:50:08,005 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-05 11:50:08,005 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-05 11:50:08,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-05 11:50:08,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-05 11:50:08,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-05 11:50:08,005 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2024-11-05 11:50:08,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2024-11-05 11:50:08,202 INFO L238 CfgBuilder]: Building ICFG [2024-11-05 11:50:08,204 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-05 11:50:08,222 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2024-11-05 11:50:16,935 INFO L? ?]: Removed 130 outVars from TransFormulas that were not future-live. [2024-11-05 11:50:16,935 INFO L287 CfgBuilder]: Performing block encoding [2024-11-05 11:50:16,948 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-05 11:50:16,948 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-05 11:50:16,949 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 11:50:16 BoogieIcfgContainer [2024-11-05 11:50:16,949 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-05 11:50:16,951 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-05 11:50:16,951 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-05 11:50:16,953 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-05 11:50:16,953 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 11:50:07" (1/3) ... [2024-11-05 11:50:16,954 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9d658e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 11:50:16, skipping insertion in model container [2024-11-05 11:50:16,954 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:50:07" (2/3) ... [2024-11-05 11:50:16,954 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9d658e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 11:50:16, skipping insertion in model container [2024-11-05 11:50:16,954 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 11:50:16" (3/3) ... [2024-11-05 11:50:16,955 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--net--ppp--pppox.ko-entry_point.cil.out.i [2024-11-05 11:50:16,966 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-05 11:50:16,966 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-05 11:50:17,016 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-05 11:50:17,020 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;@130ae5c6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-05 11:50:17,020 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-05 11:50:17,023 INFO L276 IsEmpty]: Start isEmpty. Operand has 92 states, 72 states have (on average 1.3888888888888888) internal successors, (100), 78 states have internal predecessors, (100), 12 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-05 11:50:17,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-05 11:50:17,030 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 11:50:17,030 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 11:50:17,031 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 11:50:17,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 11:50:17,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1136517471, now seen corresponding path program 1 times [2024-11-05 11:50:17,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 11:50:17,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1954786587] [2024-11-05 11:50:17,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 11:50:17,045 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 11:50:17,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 11:50:17,047 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 11:50:17,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Waiting until timeout for monitored process [2024-11-05 11:50:17,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 11:50:17,760 INFO L255 TraceCheckSpWp]: Trace formula consists of 781 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-05 11:50:17,765 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 11:50:17,775 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-05 11:50:17,775 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 11:50:19,521 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-05 11:50:19,521 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 11:50:19,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1954786587] [2024-11-05 11:50:19,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1954786587] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 11:50:19,524 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 11:50:19,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-05 11:50:19,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116890239] [2024-11-05 11:50:19,526 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 11:50:19,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-05 11:50:19,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 11:50:19,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-05 11:50:19,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-05 11:50:19,548 INFO L87 Difference]: Start difference. First operand has 92 states, 72 states have (on average 1.3888888888888888) internal successors, (100), 78 states have internal predecessors, (100), 12 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-05 11:50:19,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 11:50:19,570 INFO L93 Difference]: Finished difference Result 179 states and 241 transitions. [2024-11-05 11:50:19,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-05 11:50:19,572 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 61 [2024-11-05 11:50:19,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 11:50:19,577 INFO L225 Difference]: With dead ends: 179 [2024-11-05 11:50:19,578 INFO L226 Difference]: Without dead ends: 82 [2024-11-05 11:50:19,580 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-05 11:50:19,584 INFO L432 NwaCegarLoop]: 116 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-05 11:50:19,585 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 11:50:19,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-05 11:50:19,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2024-11-05 11:50:19,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 67 states have (on average 1.328358208955224) internal successors, (89), 68 states have internal predecessors, (89), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-05 11:50:19,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 105 transitions. [2024-11-05 11:50:19,618 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 105 transitions. Word has length 61 [2024-11-05 11:50:19,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 11:50:19,619 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 105 transitions. [2024-11-05 11:50:19,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-05 11:50:19,619 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 105 transitions. [2024-11-05 11:50:19,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-05 11:50:19,621 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 11:50:19,621 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 11:50:19,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Forceful destruction successful, exit code 0 [2024-11-05 11:50:19,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 11:50:19,823 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 11:50:19,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 11:50:19,823 INFO L85 PathProgramCache]: Analyzing trace with hash 433386269, now seen corresponding path program 1 times [2024-11-05 11:50:19,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 11:50:19,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1532003740] [2024-11-05 11:50:19,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 11:50:19,824 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 11:50:19,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 11:50:19,825 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 11:50:19,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Waiting until timeout for monitored process [2024-11-05 11:50:20,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 11:50:20,405 INFO L255 TraceCheckSpWp]: Trace formula consists of 781 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-05 11:50:20,409 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 11:50:21,504 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-05 11:50:21,504 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 11:50:25,542 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-05 11:50:25,543 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 11:50:25,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1532003740] [2024-11-05 11:50:25,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1532003740] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 11:50:25,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 11:50:25,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-05 11:50:25,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440065896] [2024-11-05 11:50:25,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 11:50:25,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-05 11:50:25,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 11:50:25,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-05 11:50:25,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-05 11:50:25,546 INFO L87 Difference]: Start difference. First operand 82 states and 105 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-05 11:50:26,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 11:50:26,137 INFO L93 Difference]: Finished difference Result 146 states and 192 transitions. [2024-11-05 11:50:26,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-05 11:50:26,138 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 61 [2024-11-05 11:50:26,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 11:50:26,139 INFO L225 Difference]: With dead ends: 146 [2024-11-05 11:50:26,139 INFO L226 Difference]: Without dead ends: 83 [2024-11-05 11:50:26,139 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-05 11:50:26,140 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 0 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-05 11:50:26,140 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 303 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-05 11:50:26,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-05 11:50:26,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2024-11-05 11:50:26,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 68 states have (on average 1.3235294117647058) internal successors, (90), 69 states have internal predecessors, (90), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-05 11:50:26,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 106 transitions. [2024-11-05 11:50:26,146 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 106 transitions. Word has length 61 [2024-11-05 11:50:26,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 11:50:26,147 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 106 transitions. [2024-11-05 11:50:26,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-05 11:50:26,147 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 106 transitions. [2024-11-05 11:50:26,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-05 11:50:26,148 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 11:50:26,148 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 11:50:26,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Forceful destruction successful, exit code 0 [2024-11-05 11:50:26,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 11:50:26,349 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 11:50:26,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 11:50:26,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1496047985, now seen corresponding path program 1 times [2024-11-05 11:50:26,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 11:50:26,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1795140412] [2024-11-05 11:50:26,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 11:50:26,350 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 11:50:26,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 11:50:26,351 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 11:50:26,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Waiting until timeout for monitored process [2024-11-05 11:50:26,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 11:50:26,933 INFO L255 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-05 11:50:26,936 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 11:50:28,808 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-05 11:50:28,809 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 11:50:34,150 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-05 11:50:34,150 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 11:50:34,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1795140412] [2024-11-05 11:50:34,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1795140412] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 11:50:34,151 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 11:50:34,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-05 11:50:34,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914682486] [2024-11-05 11:50:34,151 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 11:50:34,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-05 11:50:34,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 11:50:34,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-05 11:50:34,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-05 11:50:34,152 INFO L87 Difference]: Start difference. First operand 83 states and 106 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-05 11:50:37,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 11:50:37,054 INFO L93 Difference]: Finished difference Result 153 states and 202 transitions. [2024-11-05 11:50:37,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-05 11:50:37,055 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 63 [2024-11-05 11:50:37,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 11:50:37,058 INFO L225 Difference]: With dead ends: 153 [2024-11-05 11:50:37,058 INFO L226 Difference]: Without dead ends: 86 [2024-11-05 11:50:37,059 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-11-05 11:50:37,060 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 0 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-05 11:50:37,060 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 700 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-05 11:50:37,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-05 11:50:37,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2024-11-05 11:50:37,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 71 states have (on average 1.3098591549295775) internal successors, (93), 72 states have internal predecessors, (93), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-05 11:50:37,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 109 transitions. [2024-11-05 11:50:37,070 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 109 transitions. Word has length 63 [2024-11-05 11:50:37,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 11:50:37,070 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 109 transitions. [2024-11-05 11:50:37,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-05 11:50:37,071 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 109 transitions. [2024-11-05 11:50:37,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-05 11:50:37,072 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 11:50:37,072 INFO L215 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 11:50:37,078 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Ended with exit code 0 [2024-11-05 11:50:37,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 11:50:37,274 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 11:50:37,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 11:50:37,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1082623459, now seen corresponding path program 2 times [2024-11-05 11:50:37,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 11:50:37,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [753162818] [2024-11-05 11:50:37,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 11:50:37,275 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 11:50:37,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 11:50:37,276 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 11:50:37,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Waiting until timeout for monitored process [2024-11-05 11:50:37,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 11:50:37,853 INFO L255 TraceCheckSpWp]: Trace formula consists of 869 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-05 11:50:37,855 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 11:50:38,712 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-05 11:50:38,713 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 11:50:42,038 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-05 11:50:42,039 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 11:50:42,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [753162818] [2024-11-05 11:50:42,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [753162818] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 11:50:42,039 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 11:50:42,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-05 11:50:42,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254217853] [2024-11-05 11:50:42,039 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 11:50:42,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-05 11:50:42,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 11:50:42,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-05 11:50:42,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-05 11:50:42,040 INFO L87 Difference]: Start difference. First operand 86 states and 109 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-05 11:50:46,082 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-05 11:50:49,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 11:50:49,520 INFO L93 Difference]: Finished difference Result 225 states and 305 transitions. [2024-11-05 11:50:49,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-05 11:50:49,521 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 69 [2024-11-05 11:50:49,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 11:50:49,522 INFO L225 Difference]: With dead ends: 225 [2024-11-05 11:50:49,522 INFO L226 Difference]: Without dead ends: 173 [2024-11-05 11:50:49,523 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-05 11:50:49,524 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 144 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2024-11-05 11:50:49,524 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 291 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 39 Invalid, 1 Unknown, 0 Unchecked, 7.5s Time] [2024-11-05 11:50:49,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-11-05 11:50:49,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 167. [2024-11-05 11:50:49,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 148 states have (on average 1.385135135135135) internal successors, (205), 149 states have internal predecessors, (205), 11 states have call successors, (11), 8 states have call predecessors, (11), 7 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-05 11:50:49,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 225 transitions. [2024-11-05 11:50:49,535 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 225 transitions. Word has length 69 [2024-11-05 11:50:49,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 11:50:49,535 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 225 transitions. [2024-11-05 11:50:49,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-05 11:50:49,535 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 225 transitions. [2024-11-05 11:50:49,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-05 11:50:49,536 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 11:50:49,536 INFO L215 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 11:50:49,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Forceful destruction successful, exit code 0 [2024-11-05 11:50:49,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 11:50:49,741 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 11:50:49,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 11:50:49,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1727087195, now seen corresponding path program 1 times [2024-11-05 11:50:49,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 11:50:49,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [131647940] [2024-11-05 11:50:49,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 11:50:49,741 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 11:50:49,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 11:50:49,742 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 11:50:49,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Waiting until timeout for monitored process [2024-11-05 11:50:50,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 11:50:50,323 INFO L255 TraceCheckSpWp]: Trace formula consists of 878 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-05 11:50:50,325 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 11:51:02,798 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-05 11:51:02,799 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 11:51:11,211 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-05 11:51:11,211 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 11:51:11,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [131647940] [2024-11-05 11:51:11,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [131647940] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 11:51:11,212 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 11:51:11,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 3 [2024-11-05 11:51:11,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541584050] [2024-11-05 11:51:11,212 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 11:51:11,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-05 11:51:11,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 11:51:11,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-05 11:51:11,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-05 11:51:11,213 INFO L87 Difference]: Start difference. First operand 167 states and 225 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-05 11:51:11,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 11:51:11,838 INFO L93 Difference]: Finished difference Result 429 states and 600 transitions. [2024-11-05 11:51:11,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-05 11:51:11,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 72 [2024-11-05 11:51:11,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 11:51:11,842 INFO L225 Difference]: With dead ends: 429 [2024-11-05 11:51:11,842 INFO L226 Difference]: Without dead ends: 292 [2024-11-05 11:51:11,842 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-05 11:51:11,843 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 55 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-05 11:51:11,843 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 170 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-05 11:51:11,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2024-11-05 11:51:11,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 287. [2024-11-05 11:51:11,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 262 states have (on average 1.4083969465648856) internal successors, (369), 263 states have internal predecessors, (369), 14 states have call successors, (14), 11 states have call predecessors, (14), 10 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-05 11:51:11,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 395 transitions. [2024-11-05 11:51:11,866 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 395 transitions. Word has length 72 [2024-11-05 11:51:11,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 11:51:11,866 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 395 transitions. [2024-11-05 11:51:11,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-05 11:51:11,867 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 395 transitions. [2024-11-05 11:51:11,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-05 11:51:11,871 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 11:51:11,871 INFO L215 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 11:51:11,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Forceful destruction successful, exit code 0 [2024-11-05 11:51:12,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 11:51:12,072 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 11:51:12,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 11:51:12,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1009941433, now seen corresponding path program 1 times [2024-11-05 11:51:12,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 11:51:12,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2131852367] [2024-11-05 11:51:12,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 11:51:12,073 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 11:51:12,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 11:51:12,074 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 11:51:12,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Waiting until timeout for monitored process [2024-11-05 11:51:12,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 11:51:12,692 INFO L255 TraceCheckSpWp]: Trace formula consists of 937 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-05 11:51:12,694 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 11:51:13,603 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-05 11:51:13,603 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 11:51:18,381 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-05 11:51:18,382 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 11:51:18,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2131852367] [2024-11-05 11:51:18,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2131852367] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 11:51:18,382 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 11:51:18,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-05 11:51:18,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532620019] [2024-11-05 11:51:18,382 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 11:51:18,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-05 11:51:18,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 11:51:18,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-05 11:51:18,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-05 11:51:18,383 INFO L87 Difference]: Start difference. First operand 287 states and 395 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-05 11:51:18,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 11:51:18,986 INFO L93 Difference]: Finished difference Result 633 states and 887 transitions. [2024-11-05 11:51:18,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-05 11:51:18,987 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 78 [2024-11-05 11:51:18,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 11:51:18,989 INFO L225 Difference]: With dead ends: 633 [2024-11-05 11:51:18,989 INFO L226 Difference]: Without dead ends: 380 [2024-11-05 11:51:18,989 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-05 11:51:18,990 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 60 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-05 11:51:18,990 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 181 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-05 11:51:18,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2024-11-05 11:51:19,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 360. [2024-11-05 11:51:19,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 335 states have (on average 1.408955223880597) internal successors, (472), 336 states have internal predecessors, (472), 14 states have call successors, (14), 11 states have call predecessors, (14), 10 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-05 11:51:19,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 498 transitions. [2024-11-05 11:51:19,011 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 498 transitions. Word has length 78 [2024-11-05 11:51:19,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 11:51:19,012 INFO L471 AbstractCegarLoop]: Abstraction has 360 states and 498 transitions. [2024-11-05 11:51:19,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-05 11:51:19,012 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 498 transitions. [2024-11-05 11:51:19,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-05 11:51:19,014 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 11:51:19,014 INFO L215 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 11:51:19,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Forceful destruction successful, exit code 0 [2024-11-05 11:51:19,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 11:51:19,214 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 11:51:19,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 11:51:19,215 INFO L85 PathProgramCache]: Analyzing trace with hash -691684449, now seen corresponding path program 1 times [2024-11-05 11:51:19,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 11:51:19,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [186345292] [2024-11-05 11:51:19,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 11:51:19,215 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 11:51:19,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 11:51:19,217 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 11:51:19,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (8)] Waiting until timeout for monitored process [2024-11-05 11:51:19,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 11:51:19,828 INFO L255 TraceCheckSpWp]: Trace formula consists of 959 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-05 11:51:19,830 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 11:51:21,973 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-05 11:51:21,973 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 11:51:26,625 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-05 11:51:26,625 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 11:51:26,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [186345292] [2024-11-05 11:51:26,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [186345292] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 11:51:26,626 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 11:51:26,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2024-11-05 11:51:26,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717463326] [2024-11-05 11:51:26,626 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 11:51:26,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-05 11:51:26,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 11:51:26,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-05 11:51:26,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-05 11:51:26,627 INFO L87 Difference]: Start difference. First operand 360 states and 498 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-05 11:51:28,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 11:51:28,290 INFO L93 Difference]: Finished difference Result 695 states and 971 transitions. [2024-11-05 11:51:28,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-05 11:51:28,290 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 89 [2024-11-05 11:51:28,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 11:51:28,292 INFO L225 Difference]: With dead ends: 695 [2024-11-05 11:51:28,292 INFO L226 Difference]: Without dead ends: 369 [2024-11-05 11:51:28,293 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-05 11:51:28,294 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 0 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-05 11:51:28,295 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 400 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-05 11:51:28,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2024-11-05 11:51:28,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 369. [2024-11-05 11:51:28,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 344 states have (on average 1.3895348837209303) internal successors, (478), 345 states have internal predecessors, (478), 14 states have call successors, (14), 11 states have call predecessors, (14), 10 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-05 11:51:28,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 504 transitions. [2024-11-05 11:51:28,308 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 504 transitions. Word has length 89 [2024-11-05 11:51:28,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 11:51:28,309 INFO L471 AbstractCegarLoop]: Abstraction has 369 states and 504 transitions. [2024-11-05 11:51:28,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-05 11:51:28,309 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 504 transitions. [2024-11-05 11:51:28,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-05 11:51:28,310 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 11:51:28,310 INFO L215 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 11:51:28,320 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (8)] Ended with exit code 0 [2024-11-05 11:51:28,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 11:51:28,511 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 11:51:28,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 11:51:28,512 INFO L85 PathProgramCache]: Analyzing trace with hash -11626079, now seen corresponding path program 1 times [2024-11-05 11:51:28,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 11:51:28,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1651948053] [2024-11-05 11:51:28,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 11:51:28,512 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 11:51:28,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 11:51:28,513 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 11:51:28,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (9)] Waiting until timeout for monitored process [2024-11-05 11:51:29,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 11:51:29,149 INFO L255 TraceCheckSpWp]: Trace formula consists of 959 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-05 11:51:29,150 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 11:51:29,657 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-05 11:51:29,657 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 11:51:34,312 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-05 11:51:34,313 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 11:51:34,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1651948053] [2024-11-05 11:51:34,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1651948053] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 11:51:34,313 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 11:51:34,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-05 11:51:34,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076528414] [2024-11-05 11:51:34,313 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 11:51:34,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-05 11:51:34,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 11:51:34,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-05 11:51:34,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-05 11:51:34,314 INFO L87 Difference]: Start difference. First operand 369 states and 504 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-05 11:51:35,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 11:51:35,212 INFO L93 Difference]: Finished difference Result 685 states and 952 transitions. [2024-11-05 11:51:35,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-05 11:51:35,213 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 89 [2024-11-05 11:51:35,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 11:51:35,216 INFO L225 Difference]: With dead ends: 685 [2024-11-05 11:51:35,216 INFO L226 Difference]: Without dead ends: 350 [2024-11-05 11:51:35,217 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-05 11:51:35,217 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 0 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-05 11:51:35,217 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 302 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-05 11:51:35,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2024-11-05 11:51:35,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 350. [2024-11-05 11:51:35,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 331 states have (on average 1.3867069486404835) internal successors, (459), 332 states have internal predecessors, (459), 11 states have call successors, (11), 8 states have call predecessors, (11), 7 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-05 11:51:35,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 479 transitions. [2024-11-05 11:51:35,228 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 479 transitions. Word has length 89 [2024-11-05 11:51:35,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 11:51:35,228 INFO L471 AbstractCegarLoop]: Abstraction has 350 states and 479 transitions. [2024-11-05 11:51:35,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-05 11:51:35,228 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 479 transitions. [2024-11-05 11:51:35,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-05 11:51:35,229 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 11:51:35,229 INFO L215 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 11:51:35,237 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (9)] Ended with exit code 0 [2024-11-05 11:51:35,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 11:51:35,430 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 11:51:35,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 11:51:35,430 INFO L85 PathProgramCache]: Analyzing trace with hash -83424347, now seen corresponding path program 1 times [2024-11-05 11:51:35,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 11:51:35,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [773706705] [2024-11-05 11:51:35,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 11:51:35,431 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-05 11:51:35,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-05 11:51:35,432 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-05 11:51:35,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (10)] Waiting until timeout for monitored process [2024-11-05 11:51:36,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 11:51:36,071 INFO L255 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-05 11:51:36,073 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 11:51:51,684 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-05 11:51:51,684 INFO L311 TraceCheckSpWp]: Computing backward predicates...