/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 --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.trace.refinement.strategy FOX -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-17387ad-m [2024-11-06 12:11:47,091 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 12:11:47,167 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-06 12:11:47,173 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 12:11:47,173 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 12:11:47,199 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 12:11:47,199 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 12:11:47,200 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 12:11:47,202 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 12:11:47,203 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 12:11:47,203 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 12:11:47,204 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 12:11:47,204 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 12:11:47,204 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 12:11:47,205 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 12:11:47,205 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 12:11:47,205 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 12:11:47,205 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 12:11:47,206 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 12:11:47,206 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 12:11:47,209 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 12:11:47,210 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-06 12:11:47,210 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-06 12:11:47,210 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 12:11:47,210 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-06 12:11:47,211 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 12:11:47,211 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 12:11:47,211 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 12:11:47,211 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 12:11:47,211 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 12:11:47,212 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 12:11:47,212 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 12:11:47,212 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 12:11:47,212 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 12:11:47,212 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 12:11:47,213 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-06 12:11:47,213 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-06 12:11:47,213 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 12:11:47,214 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 12:11:47,214 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 12:11:47,214 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 12:11:47,215 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FOX [2024-11-06 12:11:47,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 12:11:47,477 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 12:11:47,480 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 12:11:47,481 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 12:11:47,481 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 12:11:47,483 INFO L431 ainManager$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 [2024-11-06 12:11:49,133 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 12:11:49,462 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 12:11:49,463 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 [2024-11-06 12:11:49,496 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2374a103/28eb31fa6f7f4d939242b1032191b389/FLAG07d8201ea [2024-11-06 12:11:49,701 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2374a103/28eb31fa6f7f4d939242b1032191b389 [2024-11-06 12:11:49,703 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 12:11:49,704 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-06 12:11:49,705 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 12:11:49,705 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 12:11:49,710 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 12:11:49,711 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 12:11:49" (1/1) ... [2024-11-06 12:11:49,712 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c77759e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:11:49, skipping insertion in model container [2024-11-06 12:11:49,712 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 12:11:49" (1/1) ... [2024-11-06 12:11:49,790 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 12:11:50,394 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-06 12:11:50,394 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-06 12:11:50,395 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-06 12:11:50,396 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-06 12:11:50,409 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] [2024-11-06 12:11:50,449 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-06 12:11:50,450 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 12:11:50,479 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 12:11:50,608 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] [2024-11-06 12:11:50,612 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] [2024-11-06 12:11:50,612 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] [2024-11-06 12:11:50,612 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] [2024-11-06 12:11:50,612 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] [2024-11-06 12:11:50,625 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] [2024-11-06 12:11:50,635 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 12:11:50,684 INFO L204 MainTranslator]: Completed translation [2024-11-06 12:11:50,688 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:11:50 WrapperNode [2024-11-06 12:11:50,688 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 12:11:50,689 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 12:11:50,690 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 12:11:50,690 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 12:11:50,701 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:11:50" (1/1) ... [2024-11-06 12:11:50,734 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:11:50" (1/1) ... [2024-11-06 12:11:50,776 INFO L138 Inliner]: procedures = 72, calls = 171, calls flagged for inlining = 23, calls inlined = 16, statements flattened = 353 [2024-11-06 12:11:50,776 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 12:11:50,777 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 12:11:50,777 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 12:11:50,777 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 12:11:50,787 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:11:50" (1/1) ... [2024-11-06 12:11:50,787 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:11:50" (1/1) ... [2024-11-06 12:11:50,798 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:11:50" (1/1) ... [2024-11-06 12:11:50,833 INFO L175 MemorySlicer]: Split 100 memory accesses to 7 slices as follows [2, 9, 78, 4, 3, 3, 1]. 78 percent of accesses are in the largest equivalence class. The 9 initializations are split as follows [2, 4, 0, 0, 3, 0, 0]. The 81 writes are split as follows [0, 0, 78, 2, 0, 0, 1]. [2024-11-06 12:11:50,833 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:11:50" (1/1) ... [2024-11-06 12:11:50,833 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:11:50" (1/1) ... [2024-11-06 12:11:50,854 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:11:50" (1/1) ... [2024-11-06 12:11:50,859 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:11:50" (1/1) ... [2024-11-06 12:11:50,864 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:11:50" (1/1) ... [2024-11-06 12:11:50,896 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:11:50" (1/1) ... [2024-11-06 12:11:50,906 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 12:11:50,909 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 12:11:50,909 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 12:11:50,909 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 12:11:50,913 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:11:50" (1/1) ... [2024-11-06 12:11:50,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 12:11:50,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 12:11:50,943 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) [2024-11-06 12:11:50,945 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 [2024-11-06 12:11:50,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 12:11:50,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-06 12:11:50,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-06 12:11:50,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-06 12:11:50,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-11-06 12:11:50,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2024-11-06 12:11:50,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2024-11-06 12:11:50,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#5 [2024-11-06 12:11:50,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#6 [2024-11-06 12:11:50,965 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2024-11-06 12:11:50,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2024-11-06 12:11:50,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2024-11-06 12:11:50,965 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2024-11-06 12:11:50,966 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-06 12:11:50,966 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-06 12:11:50,966 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-06 12:11:50,966 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-06 12:11:50,966 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-06 12:11:50,966 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-06 12:11:50,966 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-06 12:11:50,966 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2024-11-06 12:11:50,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2024-11-06 12:11:50,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-06 12:11:50,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-06 12:11:50,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-06 12:11:50,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-06 12:11:50,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-06 12:11:50,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-06 12:11:50,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-06 12:11:50,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-06 12:11:50,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-06 12:11:50,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-06 12:11:50,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-06 12:11:50,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2024-11-06 12:11:50,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2024-11-06 12:11:50,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#5 [2024-11-06 12:11:50,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#6 [2024-11-06 12:11:50,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2024-11-06 12:11:50,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2024-11-06 12:11:50,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2024-11-06 12:11:50,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2024-11-06 12:11:50,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#4 [2024-11-06 12:11:50,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#5 [2024-11-06 12:11:50,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#6 [2024-11-06 12:11:50,968 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2024-11-06 12:11:50,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2024-11-06 12:11:50,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#0 [2024-11-06 12:11:50,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#1 [2024-11-06 12:11:50,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#2 [2024-11-06 12:11:50,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#3 [2024-11-06 12:11:50,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#4 [2024-11-06 12:11:50,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#5 [2024-11-06 12:11:50,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#6 [2024-11-06 12:11:50,969 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2024-11-06 12:11:50,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2024-11-06 12:11:50,969 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-06 12:11:50,969 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-06 12:11:50,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-06 12:11:50,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 12:11:50,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 12:11:50,969 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2024-11-06 12:11:50,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2024-11-06 12:11:51,211 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 12:11:51,214 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 12:11:51,233 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2024-11-06 12:12:01,499 INFO L? ?]: Removed 130 outVars from TransFormulas that were not future-live. [2024-11-06 12:12:01,499 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 12:12:01,515 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 12:12:01,515 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-06 12:12:01,516 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 12:12:01 BoogieIcfgContainer [2024-11-06 12:12:01,516 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 12:12:01,518 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 12:12:01,518 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 12:12:01,521 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 12:12:01,521 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 12:11:49" (1/3) ... [2024-11-06 12:12:01,521 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5186468a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 12:12:01, skipping insertion in model container [2024-11-06 12:12:01,521 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 12:11:50" (2/3) ... [2024-11-06 12:12:01,522 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5186468a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 12:12:01, skipping insertion in model container [2024-11-06 12:12:01,523 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 12:12:01" (3/3) ... [2024-11-06 12:12:01,524 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--net--ppp--pppox.ko-entry_point.cil.out.i [2024-11-06 12:12:01,536 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 12:12:01,537 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 12:12:01,605 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 12:12:01,613 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;@5fc862da, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 12:12:01,613 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 12:12:01,618 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) [2024-11-06 12:12:01,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-06 12:12:01,631 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 12:12:01,631 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] [2024-11-06 12:12:01,632 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 12:12:01,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 12:12:01,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1136517471, now seen corresponding path program 1 times [2024-11-06 12:12:01,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 12:12:01,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [75407515] [2024-11-06 12:12:01,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 12:12:01,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 12:12:01,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 12:12:01,690 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 12:12:01,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-06 12:12:02,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 12:12:02,853 INFO L255 TraceCheckSpWp]: Trace formula consists of 781 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-06 12:12:02,860 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 12:12:02,896 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-06 12:12:02,896 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 12:12:02,897 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-06 12:12:02,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75407515] [2024-11-06 12:12:02,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75407515] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 12:12:02,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 12:12:02,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 12:12:02,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280091077] [2024-11-06 12:12:02,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 12:12:02,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-06 12:12:02,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-06 12:12:02,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-06 12:12:02,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-06 12:12:02,920 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 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-06 12:12:02,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 12:12:02,939 INFO L93 Difference]: Finished difference Result 179 states and 241 transitions. [2024-11-06 12:12:02,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-06 12:12:02,945 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 61 [2024-11-06 12:12:02,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 12:12:02,961 INFO L225 Difference]: With dead ends: 179 [2024-11-06 12:12:02,962 INFO L226 Difference]: Without dead ends: 82 [2024-11-06 12:12:02,969 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-06 12:12:02,971 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 [2024-11-06 12:12:02,972 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] [2024-11-06 12:12:02,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-06 12:12:03,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2024-11-06 12:12:03,008 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) [2024-11-06 12:12:03,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 105 transitions. [2024-11-06 12:12:03,013 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 105 transitions. Word has length 61 [2024-11-06 12:12:03,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 12:12:03,013 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 105 transitions. [2024-11-06 12:12:03,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-06 12:12:03,013 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 105 transitions. [2024-11-06 12:12:03,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-06 12:12:03,015 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 12:12:03,015 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] [2024-11-06 12:12:03,037 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-06 12:12:03,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 12:12:03,220 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 12:12:03,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 12:12:03,220 INFO L85 PathProgramCache]: Analyzing trace with hash 433386269, now seen corresponding path program 1 times [2024-11-06 12:12:03,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 12:12:03,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [780195956] [2024-11-06 12:12:03,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 12:12:03,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 12:12:03,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 12:12:03,225 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 12:12:03,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-06 12:12:03,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 12:12:03,933 INFO L255 TraceCheckSpWp]: Trace formula consists of 781 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-06 12:12:03,937 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 12:12:10,370 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-06 12:12:10,370 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 12:12:10,370 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-06 12:12:10,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780195956] [2024-11-06 12:12:10,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780195956] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 12:12:10,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 12:12:10,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 12:12:10,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123714724] [2024-11-06 12:12:10,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 12:12:10,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 12:12:10,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-06 12:12:10,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 12:12:10,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 12:12:10,373 INFO L87 Difference]: Start difference. First operand 82 states and 105 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 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) [2024-11-06 12:12:10,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 12:12:10,778 INFO L93 Difference]: Finished difference Result 184 states and 248 transitions. [2024-11-06 12:12:10,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 12:12:10,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 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 61 [2024-11-06 12:12:10,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 12:12:10,785 INFO L225 Difference]: With dead ends: 184 [2024-11-06 12:12:10,785 INFO L226 Difference]: Without dead ends: 128 [2024-11-06 12:12:10,786 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 12:12:10,787 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 59 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 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, 0.4s IncrementalHoareTripleChecker+Time [2024-11-06 12:12:10,792 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 170 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-06 12:12:10,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-06 12:12:10,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 125. [2024-11-06 12:12:10,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 108 states have (on average 1.3703703703703705) internal successors, (148), 109 states have internal predecessors, (148), 10 states have call successors, (10), 7 states have call predecessors, (10), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-06 12:12:10,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 166 transitions. [2024-11-06 12:12:10,815 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 166 transitions. Word has length 61 [2024-11-06 12:12:10,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 12:12:10,816 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 166 transitions. [2024-11-06 12:12:10,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 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) [2024-11-06 12:12:10,819 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 166 transitions. [2024-11-06 12:12:10,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-06 12:12:10,823 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 12:12:10,824 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 12:12:10,847 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-06 12:12:11,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 12:12:11,026 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 12:12:11,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 12:12:11,026 INFO L85 PathProgramCache]: Analyzing trace with hash 124332871, now seen corresponding path program 1 times [2024-11-06 12:12:11,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 12:12:11,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1833497704] [2024-11-06 12:12:11,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 12:12:11,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 12:12:11,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 12:12:11,038 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 12:12:11,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-06 12:12:11,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 12:12:11,812 INFO L255 TraceCheckSpWp]: Trace formula consists of 849 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-06 12:12:11,820 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 12:12:12,353 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-06 12:12:12,353 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 12:12:12,353 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-06 12:12:12,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833497704] [2024-11-06 12:12:12,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833497704] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 12:12:12,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 12:12:12,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 12:12:12,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059183529] [2024-11-06 12:12:12,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 12:12:12,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 12:12:12,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-06 12:12:12,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 12:12:12,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 12:12:12,357 INFO L87 Difference]: Start difference. First operand 125 states and 166 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2024-11-06 12:12:12,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 12:12:12,792 INFO L93 Difference]: Finished difference Result 261 states and 357 transitions. [2024-11-06 12:12:12,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 12:12:12,793 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 70 [2024-11-06 12:12:12,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 12:12:12,794 INFO L225 Difference]: With dead ends: 261 [2024-11-06 12:12:12,794 INFO L226 Difference]: Without dead ends: 166 [2024-11-06 12:12:12,795 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 12:12:12,796 INFO L432 NwaCegarLoop]: 113 mSDtfsCounter, 60 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-06 12:12:12,796 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 179 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-06 12:12:12,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-11-06 12:12:12,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 159. [2024-11-06 12:12:12,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 142 states have (on average 1.3943661971830985) internal successors, (198), 143 states have internal predecessors, (198), 10 states have call successors, (10), 7 states have call predecessors, (10), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-06 12:12:12,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 216 transitions. [2024-11-06 12:12:12,807 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 216 transitions. Word has length 70 [2024-11-06 12:12:12,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 12:12:12,807 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 216 transitions. [2024-11-06 12:12:12,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2024-11-06 12:12:12,808 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 216 transitions. [2024-11-06 12:12:12,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-06 12:12:12,809 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 12:12:12,809 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 12:12:12,834 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-06 12:12:13,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 12:12:13,010 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 12:12:13,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 12:12:13,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1221872481, now seen corresponding path program 1 times [2024-11-06 12:12:13,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 12:12:13,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [921943009] [2024-11-06 12:12:13,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 12:12:13,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 12:12:13,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 12:12:13,013 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 12:12:13,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-06 12:12:13,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 12:12:13,917 INFO L255 TraceCheckSpWp]: Trace formula consists of 871 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-06 12:12:13,922 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 12:12:15,356 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-06 12:12:15,356 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 12:12:15,357 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-06 12:12:15,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921943009] [2024-11-06 12:12:15,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921943009] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 12:12:15,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 12:12:15,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-06 12:12:15,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311903060] [2024-11-06 12:12:15,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 12:12:15,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 12:12:15,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-06 12:12:15,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 12:12:15,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-06 12:12:15,362 INFO L87 Difference]: Start difference. First operand 159 states and 216 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-06 12:12:16,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 12:12:16,084 INFO L93 Difference]: Finished difference Result 300 states and 414 transitions. [2024-11-06 12:12:16,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 12:12:16,085 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 81 [2024-11-06 12:12:16,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 12:12:16,086 INFO L225 Difference]: With dead ends: 300 [2024-11-06 12:12:16,086 INFO L226 Difference]: Without dead ends: 160 [2024-11-06 12:12:16,087 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-06 12:12:16,092 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 0 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.7s IncrementalHoareTripleChecker+Time [2024-11-06 12:12:16,092 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 303 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-06 12:12:16,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-11-06 12:12:16,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2024-11-06 12:12:16,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 143 states have (on average 1.3916083916083917) internal successors, (199), 144 states have internal predecessors, (199), 10 states have call successors, (10), 7 states have call predecessors, (10), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-06 12:12:16,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 217 transitions. [2024-11-06 12:12:16,112 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 217 transitions. Word has length 81 [2024-11-06 12:12:16,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 12:12:16,116 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 217 transitions. [2024-11-06 12:12:16,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-06 12:12:16,116 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 217 transitions. [2024-11-06 12:12:16,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-06 12:12:16,117 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 12:12:16,117 INFO L215 NwaCegarLoop]: trace histogram [2, 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] [2024-11-06 12:12:16,172 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-06 12:12:16,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 12:12:16,318 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 12:12:16,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 12:12:16,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1173369075, now seen corresponding path program 1 times [2024-11-06 12:12:16,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 12:12:16,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1372790840] [2024-11-06 12:12:16,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 12:12:16,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 12:12:16,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 12:12:16,322 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 12:12:16,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-06 12:12:17,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 12:12:17,181 INFO L255 TraceCheckSpWp]: Trace formula consists of 893 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-06 12:12:17,184 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 12:12:19,336 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-06 12:12:19,337 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 12:12:25,064 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-06 12:12:25,064 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-06 12:12:25,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372790840] [2024-11-06 12:12:25,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372790840] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 12:12:25,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 12:12:25,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-06 12:12:25,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701727191] [2024-11-06 12:12:25,067 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 12:12:25,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-06 12:12:25,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-06 12:12:25,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-06 12:12:25,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-06 12:12:25,069 INFO L87 Difference]: Start difference. First operand 160 states and 217 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-06 12:12:27,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 12:12:27,530 INFO L93 Difference]: Finished difference Result 307 states and 424 transitions. [2024-11-06 12:12:27,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-06 12:12:27,531 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 83 [2024-11-06 12:12:27,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 12:12:27,532 INFO L225 Difference]: With dead ends: 307 [2024-11-06 12:12:27,532 INFO L226 Difference]: Without dead ends: 163 [2024-11-06 12:12:27,533 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-11-06 12:12:27,533 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 0 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-06 12:12:27,534 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 305 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-06 12:12:27,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-11-06 12:12:27,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2024-11-06 12:12:27,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 146 states have (on average 1.3835616438356164) internal successors, (202), 147 states have internal predecessors, (202), 10 states have call successors, (10), 7 states have call predecessors, (10), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-06 12:12:27,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 220 transitions. [2024-11-06 12:12:27,547 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 220 transitions. Word has length 83 [2024-11-06 12:12:27,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 12:12:27,548 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 220 transitions. [2024-11-06 12:12:27,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-06 12:12:27,548 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 220 transitions. [2024-11-06 12:12:27,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-06 12:12:27,549 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 12:12:27,549 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] [2024-11-06 12:12:27,578 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-06 12:12:27,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 12:12:27,750 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 12:12:27,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 12:12:27,751 INFO L85 PathProgramCache]: Analyzing trace with hash -691684449, now seen corresponding path program 2 times [2024-11-06 12:12:27,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 12:12:27,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1378437355] [2024-11-06 12:12:27,751 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 12:12:27,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 12:12:27,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 12:12:27,755 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 12:12:27,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-06 12:12:28,689 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-06 12:12:28,689 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 12:12:28,713 INFO L255 TraceCheckSpWp]: Trace formula consists of 773 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-06 12:12:28,726 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 12:12:30,133 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-06 12:12:30,133 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 12:12:30,133 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-06 12:12:30,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378437355] [2024-11-06 12:12:30,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378437355] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 12:12:30,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 12:12:30,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-06 12:12:30,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541569301] [2024-11-06 12:12:30,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 12:12:30,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 12:12:30,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-06 12:12:30,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 12:12:30,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 12:12:30,135 INFO L87 Difference]: Start difference. First operand 163 states and 220 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) [2024-11-06 12:12:31,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 12:12:31,126 INFO L93 Difference]: Finished difference Result 295 states and 407 transitions. [2024-11-06 12:12:31,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 12:12:31,126 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 [2024-11-06 12:12:31,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 12:12:31,128 INFO L225 Difference]: With dead ends: 295 [2024-11-06 12:12:31,128 INFO L226 Difference]: Without dead ends: 166 [2024-11-06 12:12:31,128 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 12:12:31,129 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 0 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.0s IncrementalHoareTripleChecker+Time [2024-11-06 12:12:31,129 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 400 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-06 12:12:31,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-11-06 12:12:31,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2024-11-06 12:12:31,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 149 states have (on average 1.3691275167785235) internal successors, (204), 150 states have internal predecessors, (204), 10 states have call successors, (10), 7 states have call predecessors, (10), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-06 12:12:31,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 222 transitions. [2024-11-06 12:12:31,137 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 222 transitions. Word has length 89 [2024-11-06 12:12:31,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 12:12:31,137 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 222 transitions. [2024-11-06 12:12:31,137 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) [2024-11-06 12:12:31,137 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 222 transitions. [2024-11-06 12:12:31,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-06 12:12:31,138 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 12:12:31,138 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] [2024-11-06 12:12:31,162 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-06 12:12:31,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 12:12:31,339 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 12:12:31,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 12:12:31,340 INFO L85 PathProgramCache]: Analyzing trace with hash -11626079, now seen corresponding path program 1 times [2024-11-06 12:12:31,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 12:12:31,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2072189640] [2024-11-06 12:12:31,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 12:12:31,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 12:12:31,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 12:12:31,343 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 12:12:31,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-06 12:12:32,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 12:12:32,333 INFO L255 TraceCheckSpWp]: Trace formula consists of 959 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-06 12:12:32,336 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 12:12:32,668 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-06 12:12:32,669 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 12:12:32,669 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-06 12:12:32,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072189640] [2024-11-06 12:12:32,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072189640] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 12:12:32,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 12:12:32,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 12:12:32,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544544161] [2024-11-06 12:12:32,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 12:12:32,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 12:12:32,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-06 12:12:32,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 12:12:32,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 12:12:32,670 INFO L87 Difference]: Start difference. First operand 166 states and 222 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 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) [2024-11-06 12:12:33,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 12:12:33,046 INFO L93 Difference]: Finished difference Result 291 states and 400 transitions. [2024-11-06 12:12:33,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 12:12:33,050 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 [2024-11-06 12:12:33,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 12:12:33,051 INFO L225 Difference]: With dead ends: 291 [2024-11-06 12:12:33,051 INFO L226 Difference]: Without dead ends: 159 [2024-11-06 12:12:33,051 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 12:12:33,056 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 0 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-06 12:12:33,059 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 203 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-06 12:12:33,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-11-06 12:12:33,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2024-11-06 12:12:33,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 144 states have (on average 1.3680555555555556) internal successors, (197), 145 states have internal predecessors, (197), 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) [2024-11-06 12:12:33,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 213 transitions. [2024-11-06 12:12:33,083 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 213 transitions. Word has length 89 [2024-11-06 12:12:33,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 12:12:33,083 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 213 transitions. [2024-11-06 12:12:33,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2024-11-06 12:12:33,083 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 213 transitions. [2024-11-06 12:12:33,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-06 12:12:33,084 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 12:12:33,084 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] [2024-11-06 12:12:33,120 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-06 12:12:33,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 12:12:33,291 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 12:12:33,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 12:12:33,291 INFO L85 PathProgramCache]: Analyzing trace with hash -83424347, now seen corresponding path program 1 times [2024-11-06 12:12:33,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 12:12:33,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [604411569] [2024-11-06 12:12:33,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 12:12:33,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 12:12:33,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 12:12:33,298 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 12:12:33,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-06 12:12:34,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 12:12:34,167 INFO L255 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-06 12:12:34,170 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 12:12:44,534 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-06 12:12:44,535 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 12:12:44,535 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-06 12:12:44,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604411569] [2024-11-06 12:12:44,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604411569] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 12:12:44,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 12:12:44,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 12:12:44,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833041929] [2024-11-06 12:12:44,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 12:12:44,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 12:12:44,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-06 12:12:44,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 12:12:44,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-06 12:12:44,537 INFO L87 Difference]: Start difference. First operand 159 states and 213 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-06 12:12:48,598 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-06 12:12:50,082 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-06 12:12:53,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 12:12:53,146 INFO L93 Difference]: Finished difference Result 294 states and 402 transitions. [2024-11-06 12:12:53,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 12:12:53,146 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (8), 3 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 91 [2024-11-06 12:12:53,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 12:12:53,148 INFO L225 Difference]: With dead ends: 294 [2024-11-06 12:12:53,148 INFO L226 Difference]: Without dead ends: 286 [2024-11-06 12:12:53,148 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-06 12:12:53,148 INFO L432 NwaCegarLoop]: 158 mSDtfsCounter, 96 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2024-11-06 12:12:53,148 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 308 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 1 Unknown, 0 Unchecked, 8.6s Time] [2024-11-06 12:12:53,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2024-11-06 12:12:53,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 174. [2024-11-06 12:12:53,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 156 states have (on average 1.358974358974359) internal successors, (212), 158 states have internal predecessors, (212), 10 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2024-11-06 12:12:53,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 231 transitions. [2024-11-06 12:12:53,156 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 231 transitions. Word has length 91 [2024-11-06 12:12:53,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 12:12:53,156 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 231 transitions. [2024-11-06 12:12:53,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-06 12:12:53,156 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 231 transitions. [2024-11-06 12:12:53,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-06 12:12:53,157 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 12:12:53,157 INFO L215 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 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] [2024-11-06 12:12:53,182 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-06 12:12:53,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 12:12:53,358 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 12:12:53,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 12:12:53,359 INFO L85 PathProgramCache]: Analyzing trace with hash 709073474, now seen corresponding path program 1 times [2024-11-06 12:12:53,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 12:12:53,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1549911345] [2024-11-06 12:12:53,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 12:12:53,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 12:12:53,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 12:12:53,361 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 12:12:53,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-06 12:12:54,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 12:12:54,247 INFO L255 TraceCheckSpWp]: Trace formula consists of 948 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-06 12:12:54,250 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 12:12:54,868 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-06 12:12:54,868 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 12:12:54,868 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-06 12:12:54,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549911345] [2024-11-06 12:12:54,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549911345] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 12:12:54,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 12:12:54,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 12:12:54,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339919788] [2024-11-06 12:12:54,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 12:12:54,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 12:12:54,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-06 12:12:54,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 12:12:54,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 12:12:54,870 INFO L87 Difference]: Start difference. First operand 174 states and 231 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2024-11-06 12:12:55,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 12:12:55,485 INFO L93 Difference]: Finished difference Result 247 states and 333 transitions. [2024-11-06 12:12:55,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 12:12:55,486 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 98 [2024-11-06 12:12:55,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 12:12:55,493 INFO L225 Difference]: With dead ends: 247 [2024-11-06 12:12:55,493 INFO L226 Difference]: Without dead ends: 174 [2024-11-06 12:12:55,493 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 12:12:55,494 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 0 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-06 12:12:55,494 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 203 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-06 12:12:55,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2024-11-06 12:12:55,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2024-11-06 12:12:55,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 156 states have (on average 1.3461538461538463) internal successors, (210), 158 states have internal predecessors, (210), 10 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2024-11-06 12:12:55,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 229 transitions. [2024-11-06 12:12:55,499 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 229 transitions. Word has length 98 [2024-11-06 12:12:55,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 12:12:55,500 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 229 transitions. [2024-11-06 12:12:55,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2024-11-06 12:12:55,500 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 229 transitions. [2024-11-06 12:12:55,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-06 12:12:55,501 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 12:12:55,501 INFO L215 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 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] [2024-11-06 12:12:55,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-06 12:12:55,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 12:12:55,702 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 12:12:55,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 12:12:55,702 INFO L85 PathProgramCache]: Analyzing trace with hash -311994880, now seen corresponding path program 1 times [2024-11-06 12:12:55,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 12:12:55,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1569665589] [2024-11-06 12:12:55,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 12:12:55,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 12:12:55,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 12:12:55,705 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 12:12:55,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-06 12:12:56,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 12:12:56,649 INFO L255 TraceCheckSpWp]: Trace formula consists of 948 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-06 12:12:56,654 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 12:13:31,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9