/root/.sdkman/candidates/java/11.0.12-open/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-tmp.fs.smtinterpol-bv-eval-3dddfdf-m [2024-11-15 14:17:54,126 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-15 14:17:54,199 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-15 14:17:54,204 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-15 14:17:54,207 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-15 14:17:54,237 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-15 14:17:54,238 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-15 14:17:54,238 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-15 14:17:54,239 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-15 14:17:54,244 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-15 14:17:54,244 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-15 14:17:54,244 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-15 14:17:54,245 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-15 14:17:54,245 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-15 14:17:54,245 INFO L153 SettingsManager]: * Use SBE=true [2024-11-15 14:17:54,246 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-15 14:17:54,246 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-15 14:17:54,246 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-15 14:17:54,246 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-15 14:17:54,247 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-15 14:17:54,247 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-15 14:17:54,247 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-15 14:17:54,248 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-15 14:17:54,248 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-15 14:17:54,249 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-15 14:17:54,249 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-15 14:17:54,249 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-15 14:17:54,249 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-15 14:17:54,250 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-15 14:17:54,250 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-15 14:17:54,250 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-15 14:17:54,250 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-15 14:17:54,251 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-15 14:17:54,251 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-15 14:17:54,251 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-15 14:17:54,251 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-15 14:17:54,251 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-15 14:17:54,252 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-15 14:17:54,252 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-15 14:17:54,252 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-15 14:17:54,252 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-15 14:17:54,253 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FOX [2024-11-15 14:17:54,528 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-15 14:17:54,557 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-15 14:17:54,560 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-15 14:17:54,561 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-15 14:17:54,562 INFO L274 PluginConnector]: CDTParser initialized [2024-11-15 14:17:54,563 INFO L431 ainManager$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 [2024-11-15 14:17:56,074 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-15 14:17:56,465 INFO L384 CDTParser]: Found 1 translation units. [2024-11-15 14:17:56,466 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 [2024-11-15 14:17:56,508 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a4b65077/55c388c8b191438ba93f046e837833bd/FLAGc02c11fa4 [2024-11-15 14:17:56,522 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a4b65077/55c388c8b191438ba93f046e837833bd [2024-11-15 14:17:56,525 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-15 14:17:56,526 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-15 14:17:56,527 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-15 14:17:56,527 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-15 14:17:56,533 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-15 14:17:56,533 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 02:17:56" (1/1) ... [2024-11-15 14:17:56,534 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6094f48f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 02:17:56, skipping insertion in model container [2024-11-15 14:17:56,534 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 02:17:56" (1/1) ... [2024-11-15 14:17:56,626 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-15 14:17:57,364 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-15 14:17:57,364 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-15 14:17:57,364 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-15 14:17:57,366 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-15 14:17:57,376 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] [2024-11-15 14:17:57,423 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-15 14:17:57,424 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-15 14:17:57,463 INFO L200 MainTranslator]: Completed pre-run [2024-11-15 14:17:57,615 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] [2024-11-15 14:17:57,617 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] [2024-11-15 14:17:57,618 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] [2024-11-15 14:17:57,618 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] [2024-11-15 14:17:57,618 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] [2024-11-15 14:17:57,634 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] [2024-11-15 14:17:57,643 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-15 14:17:57,685 INFO L204 MainTranslator]: Completed translation [2024-11-15 14:17:57,687 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 02:17:57 WrapperNode [2024-11-15 14:17:57,687 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-15 14:17:57,688 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-15 14:17:57,688 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-15 14:17:57,688 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-15 14:17:57,695 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 02:17:57" (1/1) ... [2024-11-15 14:17:57,732 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 02:17:57" (1/1) ... [2024-11-15 14:17:57,777 INFO L138 Inliner]: procedures = 72, calls = 171, calls flagged for inlining = 23, calls inlined = 16, statements flattened = 353 [2024-11-15 14:17:57,781 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-15 14:17:57,782 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-15 14:17:57,782 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-15 14:17:57,782 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-15 14:17:57,794 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 02:17:57" (1/1) ... [2024-11-15 14:17:57,795 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 02:17:57" (1/1) ... [2024-11-15 14:17:57,810 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 02:17:57" (1/1) ... [2024-11-15 14:17:57,841 INFO L175 MemorySlicer]: Split 100 memory accesses to 7 slices as follows [2, 4, 3, 9, 78, 3, 1]. 78 percent of accesses are in the largest equivalence class. The 9 initializations are split as follows [2, 0, 0, 4, 0, 3, 0]. The 81 writes are split as follows [0, 2, 0, 0, 78, 0, 1]. [2024-11-15 14:17:57,841 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 02:17:57" (1/1) ... [2024-11-15 14:17:57,842 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 02:17:57" (1/1) ... [2024-11-15 14:17:57,870 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 02:17:57" (1/1) ... [2024-11-15 14:17:57,877 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 02:17:57" (1/1) ... [2024-11-15 14:17:57,886 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 02:17:57" (1/1) ... [2024-11-15 14:17:57,895 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 02:17:57" (1/1) ... [2024-11-15 14:17:57,908 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-15 14:17:57,909 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-15 14:17:57,909 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-15 14:17:57,909 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-15 14:17:57,912 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 02:17:57" (1/1) ... [2024-11-15 14:17:57,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-15 14:17:57,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-15 14:17:57,949 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) [2024-11-15 14:17:57,955 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 [2024-11-15 14:17:57,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-15 14:17:57,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-15 14:17:57,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-15 14:17:57,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-15 14:17:57,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-11-15 14:17:57,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2024-11-15 14:17:57,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2024-11-15 14:17:57,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#5 [2024-11-15 14:17:57,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#6 [2024-11-15 14:17:58,000 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2024-11-15 14:17:58,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2024-11-15 14:17:58,000 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2024-11-15 14:17:58,000 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2024-11-15 14:17:58,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-15 14:17:58,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-15 14:17:58,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-15 14:17:58,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-15 14:17:58,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-15 14:17:58,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-15 14:17:58,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-15 14:17:58,002 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2024-11-15 14:17:58,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2024-11-15 14:17:58,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-15 14:17:58,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-15 14:17:58,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-15 14:17:58,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-15 14:17:58,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-15 14:17:58,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-15 14:17:58,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-15 14:17:58,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-15 14:17:58,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-15 14:17:58,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-15 14:17:58,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-15 14:17:58,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2024-11-15 14:17:58,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2024-11-15 14:17:58,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#5 [2024-11-15 14:17:58,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#6 [2024-11-15 14:17:58,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2024-11-15 14:17:58,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2024-11-15 14:17:58,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2024-11-15 14:17:58,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2024-11-15 14:17:58,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#4 [2024-11-15 14:17:58,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#5 [2024-11-15 14:17:58,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#6 [2024-11-15 14:17:58,006 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2024-11-15 14:17:58,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2024-11-15 14:17:58,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#0 [2024-11-15 14:17:58,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#1 [2024-11-15 14:17:58,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#2 [2024-11-15 14:17:58,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#3 [2024-11-15 14:17:58,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#4 [2024-11-15 14:17:58,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#5 [2024-11-15 14:17:58,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#6 [2024-11-15 14:17:58,006 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2024-11-15 14:17:58,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2024-11-15 14:17:58,006 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-15 14:17:58,007 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-15 14:17:58,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-15 14:17:58,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-15 14:17:58,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-15 14:17:58,007 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2024-11-15 14:17:58,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2024-11-15 14:17:58,334 INFO L238 CfgBuilder]: Building ICFG [2024-11-15 14:17:58,337 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-15 14:17:58,404 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2024-11-15 14:18:07,076 INFO L? ?]: Removed 130 outVars from TransFormulas that were not future-live. [2024-11-15 14:18:07,076 INFO L287 CfgBuilder]: Performing block encoding [2024-11-15 14:18:07,091 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-15 14:18:07,092 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-15 14:18:07,092 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 02:18:07 BoogieIcfgContainer [2024-11-15 14:18:07,092 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-15 14:18:07,094 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-15 14:18:07,094 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-15 14:18:07,097 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-15 14:18:07,097 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 02:17:56" (1/3) ... [2024-11-15 14:18:07,098 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@214ae41f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 02:18:07, skipping insertion in model container [2024-11-15 14:18:07,098 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 02:17:57" (2/3) ... [2024-11-15 14:18:07,098 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@214ae41f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 02:18:07, skipping insertion in model container [2024-11-15 14:18:07,098 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 02:18:07" (3/3) ... [2024-11-15 14:18:07,099 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--net--ppp--pppox.ko-entry_point.cil.out.i [2024-11-15 14:18:07,114 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-15 14:18:07,114 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-15 14:18:07,170 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-15 14:18:07,177 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;@5aeda11c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-15 14:18:07,178 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-15 14:18:07,181 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) [2024-11-15 14:18:07,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-15 14:18:07,192 INFO L207 NwaCegarLoop]: Found error trace [2024-11-15 14:18:07,193 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] [2024-11-15 14:18:07,193 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-15 14:18:07,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-15 14:18:07,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1136517471, now seen corresponding path program 1 times [2024-11-15 14:18:07,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-15 14:18:07,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144630197] [2024-11-15 14:18:07,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-15 14:18:07,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-15 14:18:08,304 ERROR L246 FreeRefinementEngine]: Caught known exception: Const is only supported for infinite index sort [2024-11-15 14:18:08,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1279182483] [2024-11-15 14:18:08,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-15 14:18:08,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-15 14:18:08,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-15 14:18:08,308 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) [2024-11-15 14:18:08,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-15 14:18:09,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-15 14:18:09,260 INFO L255 TraceCheckSpWp]: Trace formula consists of 781 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-15 14:18:09,271 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-15 14:18:09,290 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-15 14:18:09,290 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-15 14:18:09,290 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-15 14:18:09,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144630197] [2024-11-15 14:18:09,291 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-15 14:18:09,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279182483] [2024-11-15 14:18:09,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279182483] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-15 14:18:09,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-15 14:18:09,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-15 14:18:09,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001381439] [2024-11-15 14:18:09,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-15 14:18:09,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-15 14:18:09,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-15 14:18:09,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-15 14:18:09,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-15 14:18:09,325 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) [2024-11-15 14:18:09,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-15 14:18:09,355 INFO L93 Difference]: Finished difference Result 179 states and 241 transitions. [2024-11-15 14:18:09,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-15 14:18:09,358 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 [2024-11-15 14:18:09,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-15 14:18:09,364 INFO L225 Difference]: With dead ends: 179 [2024-11-15 14:18:09,364 INFO L226 Difference]: Without dead ends: 82 [2024-11-15 14:18:09,367 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 [2024-11-15 14:18:09,370 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 [2024-11-15 14:18:09,370 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] [2024-11-15 14:18:09,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-15 14:18:09,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2024-11-15 14:18:09,410 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) [2024-11-15 14:18:09,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 105 transitions. [2024-11-15 14:18:09,417 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 105 transitions. Word has length 61 [2024-11-15 14:18:09,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-15 14:18:09,417 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 105 transitions. [2024-11-15 14:18:09,418 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) [2024-11-15 14:18:09,418 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 105 transitions. [2024-11-15 14:18:09,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-15 14:18:09,423 INFO L207 NwaCegarLoop]: Found error trace [2024-11-15 14:18:09,423 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] [2024-11-15 14:18:09,447 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-15 14:18:09,624 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,SelfDestructingSolverStorable0 [2024-11-15 14:18:09,625 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-15 14:18:09,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-15 14:18:09,625 INFO L85 PathProgramCache]: Analyzing trace with hash 433386269, now seen corresponding path program 1 times [2024-11-15 14:18:09,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-15 14:18:09,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413773935] [2024-11-15 14:18:09,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-15 14:18:09,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-15 14:18:10,270 ERROR L246 FreeRefinementEngine]: Caught known exception: Const is only supported for infinite index sort [2024-11-15 14:18:10,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1515697090] [2024-11-15 14:18:10,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-15 14:18:10,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-15 14:18:10,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-15 14:18:10,274 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) [2024-11-15 14:18:10,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-15 14:18:11,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-15 14:18:11,230 INFO L255 TraceCheckSpWp]: Trace formula consists of 781 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-15 14:18:11,235 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-15 14:18:16,874 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-15 14:18:16,875 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-15 14:18:16,875 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-15 14:18:16,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413773935] [2024-11-15 14:18:16,875 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-15 14:18:16,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515697090] [2024-11-15 14:18:16,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515697090] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-15 14:18:16,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-15 14:18:16,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-15 14:18:16,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577218741] [2024-11-15 14:18:16,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-15 14:18:16,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-15 14:18:16,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-15 14:18:16,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-15 14:18:16,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-15 14:18:16,882 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) [2024-11-15 14:18:17,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-15 14:18:17,204 INFO L93 Difference]: Finished difference Result 184 states and 248 transitions. [2024-11-15 14:18:17,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-15 14:18:17,205 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 [2024-11-15 14:18:17,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-15 14:18:17,207 INFO L225 Difference]: With dead ends: 184 [2024-11-15 14:18:17,207 INFO L226 Difference]: Without dead ends: 128 [2024-11-15 14:18:17,207 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 [2024-11-15 14:18:17,209 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 59 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2024-11-15 14:18:17,210 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 170 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-15 14:18:17,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-15 14:18:17,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 125. [2024-11-15 14:18:17,222 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) [2024-11-15 14:18:17,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 166 transitions. [2024-11-15 14:18:17,227 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 166 transitions. Word has length 61 [2024-11-15 14:18:17,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-15 14:18:17,228 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 166 transitions. [2024-11-15 14:18:17,229 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) [2024-11-15 14:18:17,229 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 166 transitions. [2024-11-15 14:18:17,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-15 14:18:17,231 INFO L207 NwaCegarLoop]: Found error trace [2024-11-15 14:18:17,231 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] [2024-11-15 14:18:17,251 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-15 14:18:17,432 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,SelfDestructingSolverStorable1 [2024-11-15 14:18:17,433 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-15 14:18:17,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-15 14:18:17,433 INFO L85 PathProgramCache]: Analyzing trace with hash 124332871, now seen corresponding path program 1 times [2024-11-15 14:18:17,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-15 14:18:17,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222148520] [2024-11-15 14:18:17,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-15 14:18:17,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-15 14:18:17,998 ERROR L246 FreeRefinementEngine]: Caught known exception: Const is only supported for infinite index sort [2024-11-15 14:18:17,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [276732081] [2024-11-15 14:18:17,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-15 14:18:17,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-15 14:18:17,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-15 14:18:18,002 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) [2024-11-15 14:18:18,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-15 14:18:18,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-15 14:18:18,971 INFO L255 TraceCheckSpWp]: Trace formula consists of 849 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-15 14:18:18,975 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-15 14:18:19,406 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-15 14:18:19,406 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-15 14:18:19,406 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-15 14:18:19,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222148520] [2024-11-15 14:18:19,406 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-15 14:18:19,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276732081] [2024-11-15 14:18:19,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276732081] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-15 14:18:19,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-15 14:18:19,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-15 14:18:19,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291677750] [2024-11-15 14:18:19,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-15 14:18:19,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-15 14:18:19,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-15 14:18:19,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-15 14:18:19,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-15 14:18:19,409 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) [2024-11-15 14:18:19,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-15 14:18:19,738 INFO L93 Difference]: Finished difference Result 261 states and 357 transitions. [2024-11-15 14:18:19,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-15 14:18:19,739 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 [2024-11-15 14:18:19,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-15 14:18:19,741 INFO L225 Difference]: With dead ends: 261 [2024-11-15 14:18:19,741 INFO L226 Difference]: Without dead ends: 166 [2024-11-15 14:18:19,741 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 [2024-11-15 14:18:19,743 INFO L432 NwaCegarLoop]: 113 mSDtfsCounter, 60 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2024-11-15 14:18:19,743 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 179 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-15 14:18:19,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-11-15 14:18:19,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 159. [2024-11-15 14:18:19,755 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) [2024-11-15 14:18:19,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 216 transitions. [2024-11-15 14:18:19,756 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 216 transitions. Word has length 70 [2024-11-15 14:18:19,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-15 14:18:19,757 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 216 transitions. [2024-11-15 14:18:19,757 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) [2024-11-15 14:18:19,757 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 216 transitions. [2024-11-15 14:18:19,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-15 14:18:19,758 INFO L207 NwaCegarLoop]: Found error trace [2024-11-15 14:18:19,759 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] [2024-11-15 14:18:19,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-15 14:18:19,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-15 14:18:19,960 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-15 14:18:19,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-15 14:18:19,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1221872481, now seen corresponding path program 1 times [2024-11-15 14:18:19,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-15 14:18:19,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844626650] [2024-11-15 14:18:19,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-15 14:18:19,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-15 14:18:20,390 ERROR L246 FreeRefinementEngine]: Caught known exception: Const is only supported for infinite index sort [2024-11-15 14:18:20,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1706297577] [2024-11-15 14:18:20,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-15 14:18:20,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-15 14:18:20,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-15 14:18:20,393 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) [2024-11-15 14:18:20,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-15 14:18:21,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-15 14:18:21,288 INFO L255 TraceCheckSpWp]: Trace formula consists of 871 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-15 14:18:21,292 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-15 14:18:22,409 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-15 14:18:22,409 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-15 14:18:22,409 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-15 14:18:22,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844626650] [2024-11-15 14:18:22,410 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-15 14:18:22,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706297577] [2024-11-15 14:18:22,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706297577] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-15 14:18:22,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-15 14:18:22,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-15 14:18:22,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142482321] [2024-11-15 14:18:22,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-15 14:18:22,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-15 14:18:22,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-15 14:18:22,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-15 14:18:22,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-15 14:18:22,412 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) [2024-11-15 14:18:23,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-15 14:18:23,003 INFO L93 Difference]: Finished difference Result 300 states and 414 transitions. [2024-11-15 14:18:23,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-15 14:18:23,005 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 [2024-11-15 14:18:23,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-15 14:18:23,007 INFO L225 Difference]: With dead ends: 300 [2024-11-15 14:18:23,007 INFO L226 Difference]: Without dead ends: 160 [2024-11-15 14:18:23,008 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-15 14:18:23,008 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 0 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-15 14:18:23,009 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 303 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-15 14:18:23,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-11-15 14:18:23,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2024-11-15 14:18:23,019 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) [2024-11-15 14:18:23,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 217 transitions. [2024-11-15 14:18:23,020 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 217 transitions. Word has length 81 [2024-11-15 14:18:23,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-15 14:18:23,020 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 217 transitions. [2024-11-15 14:18:23,021 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) [2024-11-15 14:18:23,021 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 217 transitions. [2024-11-15 14:18:23,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-15 14:18:23,022 INFO L207 NwaCegarLoop]: Found error trace [2024-11-15 14:18:23,022 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] [2024-11-15 14:18:23,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-15 14:18:23,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-15 14:18:23,223 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-15 14:18:23,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-15 14:18:23,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1173369075, now seen corresponding path program 1 times [2024-11-15 14:18:23,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-15 14:18:23,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543146669] [2024-11-15 14:18:23,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-15 14:18:23,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-15 14:18:23,710 ERROR L246 FreeRefinementEngine]: Caught known exception: Const is only supported for infinite index sort [2024-11-15 14:18:23,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2085221231] [2024-11-15 14:18:23,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-15 14:18:23,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-15 14:18:23,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-15 14:18:23,713 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) [2024-11-15 14:18:23,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-15 14:18:24,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-15 14:18:24,598 INFO L255 TraceCheckSpWp]: Trace formula consists of 893 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-15 14:18:24,601 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-15 14:18:26,303 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-15 14:18:26,304 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-15 14:18:31,329 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-15 14:18:31,330 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-15 14:18:31,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543146669] [2024-11-15 14:18:31,330 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-15 14:18:31,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085221231] [2024-11-15 14:18:31,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085221231] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-15 14:18:31,331 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-15 14:18:31,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-15 14:18:31,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81580814] [2024-11-15 14:18:31,331 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-15 14:18:31,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-15 14:18:31,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-15 14:18:31,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-15 14:18:31,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-15 14:18:31,333 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) [2024-11-15 14:18:33,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-15 14:18:33,509 INFO L93 Difference]: Finished difference Result 307 states and 424 transitions. [2024-11-15 14:18:33,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-15 14:18:33,510 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 [2024-11-15 14:18:33,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-15 14:18:33,511 INFO L225 Difference]: With dead ends: 307 [2024-11-15 14:18:33,511 INFO L226 Difference]: Without dead ends: 163 [2024-11-15 14:18:33,512 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-11-15 14:18:33,512 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 0 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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, 1.3s IncrementalHoareTripleChecker+Time [2024-11-15 14:18:33,513 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 305 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-15 14:18:33,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-11-15 14:18:33,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2024-11-15 14:18:33,521 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) [2024-11-15 14:18:33,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 220 transitions. [2024-11-15 14:18:33,522 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 220 transitions. Word has length 83 [2024-11-15 14:18:33,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-15 14:18:33,522 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 220 transitions. [2024-11-15 14:18:33,523 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) [2024-11-15 14:18:33,523 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 220 transitions. [2024-11-15 14:18:33,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-15 14:18:33,524 INFO L207 NwaCegarLoop]: Found error trace [2024-11-15 14:18:33,524 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] [2024-11-15 14:18:33,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-15 14:18:33,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-15 14:18:33,725 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-15 14:18:33,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-15 14:18:33,726 INFO L85 PathProgramCache]: Analyzing trace with hash -691684449, now seen corresponding path program 2 times [2024-11-15 14:18:33,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-15 14:18:33,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290425786] [2024-11-15 14:18:33,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-15 14:18:33,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-15 14:18:34,125 ERROR L246 FreeRefinementEngine]: Caught known exception: Const is only supported for infinite index sort [2024-11-15 14:18:34,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1507027758] [2024-11-15 14:18:34,126 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-15 14:18:34,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-15 14:18:34,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-15 14:18:34,128 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) [2024-11-15 14:18:34,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-15 14:18:35,065 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-15 14:18:35,065 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-15 14:18:35,089 INFO L255 TraceCheckSpWp]: Trace formula consists of 773 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-15 14:18:35,093 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-15 14:18:36,315 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-15 14:18:36,316 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-15 14:18:36,316 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-15 14:18:36,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290425786] [2024-11-15 14:18:36,316 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-15 14:18:36,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507027758] [2024-11-15 14:18:36,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507027758] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-15 14:18:36,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-15 14:18:36,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-15 14:18:36,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039082051] [2024-11-15 14:18:36,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-15 14:18:36,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-15 14:18:36,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-15 14:18:36,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-15 14:18:36,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-15 14:18:36,323 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) [2024-11-15 14:18:37,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-15 14:18:37,240 INFO L93 Difference]: Finished difference Result 295 states and 407 transitions. [2024-11-15 14:18:37,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-15 14:18:37,241 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 [2024-11-15 14:18:37,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-15 14:18:37,242 INFO L225 Difference]: With dead ends: 295 [2024-11-15 14:18:37,242 INFO L226 Difference]: Without dead ends: 166 [2024-11-15 14:18:37,243 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-15 14:18:37,244 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 0 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 0.9s IncrementalHoareTripleChecker+Time [2024-11-15 14:18:37,244 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 400 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-15 14:18:37,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-11-15 14:18:37,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2024-11-15 14:18:37,253 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) [2024-11-15 14:18:37,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 222 transitions. [2024-11-15 14:18:37,254 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 222 transitions. Word has length 89 [2024-11-15 14:18:37,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-15 14:18:37,255 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 222 transitions. [2024-11-15 14:18:37,255 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) [2024-11-15 14:18:37,255 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 222 transitions. [2024-11-15 14:18:37,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-15 14:18:37,256 INFO L207 NwaCegarLoop]: Found error trace [2024-11-15 14:18:37,256 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] [2024-11-15 14:18:37,281 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-15 14:18:37,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-15 14:18:37,457 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-15 14:18:37,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-15 14:18:37,458 INFO L85 PathProgramCache]: Analyzing trace with hash -11626079, now seen corresponding path program 1 times [2024-11-15 14:18:37,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-15 14:18:37,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248270594] [2024-11-15 14:18:37,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-15 14:18:37,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-15 14:18:37,955 ERROR L246 FreeRefinementEngine]: Caught known exception: Const is only supported for infinite index sort [2024-11-15 14:18:37,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [670356191] [2024-11-15 14:18:37,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-15 14:18:37,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-15 14:18:37,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-15 14:18:37,959 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) [2024-11-15 14:18:37,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-15 14:18:38,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-15 14:18:39,009 INFO L255 TraceCheckSpWp]: Trace formula consists of 959 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-15 14:18:39,012 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-15 14:18:39,311 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-15 14:18:39,311 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-15 14:18:39,312 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-15 14:18:39,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248270594] [2024-11-15 14:18:39,312 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-15 14:18:39,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670356191] [2024-11-15 14:18:39,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670356191] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-15 14:18:39,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-15 14:18:39,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-15 14:18:39,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458487991] [2024-11-15 14:18:39,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-15 14:18:39,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-15 14:18:39,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-15 14:18:39,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-15 14:18:39,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-15 14:18:39,314 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) [2024-11-15 14:18:39,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-15 14:18:39,643 INFO L93 Difference]: Finished difference Result 291 states and 400 transitions. [2024-11-15 14:18:39,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-15 14:18:39,645 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 [2024-11-15 14:18:39,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-15 14:18:39,646 INFO L225 Difference]: With dead ends: 291 [2024-11-15 14:18:39,646 INFO L226 Difference]: Without dead ends: 159 [2024-11-15 14:18:39,647 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 [2024-11-15 14:18:39,647 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 0 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2024-11-15 14:18:39,648 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 203 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-15 14:18:39,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-11-15 14:18:39,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2024-11-15 14:18:39,664 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) [2024-11-15 14:18:39,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 213 transitions. [2024-11-15 14:18:39,665 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 213 transitions. Word has length 89 [2024-11-15 14:18:39,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-15 14:18:39,665 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 213 transitions. [2024-11-15 14:18:39,666 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) [2024-11-15 14:18:39,666 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 213 transitions. [2024-11-15 14:18:39,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-15 14:18:39,667 INFO L207 NwaCegarLoop]: Found error trace [2024-11-15 14:18:39,667 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] [2024-11-15 14:18:39,692 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-15 14:18:39,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-15 14:18:39,868 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-15 14:18:39,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-15 14:18:39,868 INFO L85 PathProgramCache]: Analyzing trace with hash -83424347, now seen corresponding path program 1 times [2024-11-15 14:18:39,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-15 14:18:39,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519414097] [2024-11-15 14:18:39,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-15 14:18:39,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-15 14:18:40,422 ERROR L246 FreeRefinementEngine]: Caught known exception: Const is only supported for infinite index sort [2024-11-15 14:18:40,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1964243786] [2024-11-15 14:18:40,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-15 14:18:40,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-15 14:18:40,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-15 14:18:40,431 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) [2024-11-15 14:18:40,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-15 14:18:41,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-15 14:18:41,532 INFO L255 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-15 14:18:41,535 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-15 14:18:50,306 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-15 14:18:50,307 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-15 14:18:50,307 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-15 14:18:50,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519414097] [2024-11-15 14:18:50,307 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-15 14:18:50,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964243786] [2024-11-15 14:18:50,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964243786] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-15 14:18:50,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-15 14:18:50,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-15 14:18:50,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145064525] [2024-11-15 14:18:50,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-15 14:18:50,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-15 14:18:50,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-15 14:18:50,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-15 14:18:50,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-15 14:18:50,309 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) [2024-11-15 14:18:54,352 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-15 14:18:55,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-15 14:18:58,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-15 14:18:58,733 INFO L93 Difference]: Finished difference Result 294 states and 402 transitions. [2024-11-15 14:18:58,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-15 14:18:58,734 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 [2024-11-15 14:18:58,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-15 14:18:58,736 INFO L225 Difference]: With dead ends: 294 [2024-11-15 14:18:58,736 INFO L226 Difference]: Without dead ends: 286 [2024-11-15 14:18:58,736 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 [2024-11-15 14:18:58,737 INFO L432 NwaCegarLoop]: 158 mSDtfsCounter, 96 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s 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, 8.4s IncrementalHoareTripleChecker+Time [2024-11-15 14:18:58,737 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 308 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 1 Unknown, 0 Unchecked, 8.4s Time] [2024-11-15 14:18:58,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2024-11-15 14:18:58,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 174. [2024-11-15 14:18:58,745 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) [2024-11-15 14:18:58,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 231 transitions. [2024-11-15 14:18:58,746 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 231 transitions. Word has length 91 [2024-11-15 14:18:58,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-15 14:18:58,746 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 231 transitions. [2024-11-15 14:18:58,747 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) [2024-11-15 14:18:58,747 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 231 transitions. [2024-11-15 14:18:58,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-15 14:18:58,748 INFO L207 NwaCegarLoop]: Found error trace [2024-11-15 14:18:58,748 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] [2024-11-15 14:18:58,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-15 14:18:58,948 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,SelfDestructingSolverStorable7 [2024-11-15 14:18:58,949 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-15 14:18:58,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-15 14:18:58,949 INFO L85 PathProgramCache]: Analyzing trace with hash 709073474, now seen corresponding path program 1 times [2024-11-15 14:18:58,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-15 14:18:58,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826627557] [2024-11-15 14:18:58,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-15 14:18:58,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-15 14:18:59,345 ERROR L246 FreeRefinementEngine]: Caught known exception: Const is only supported for infinite index sort [2024-11-15 14:18:59,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1150778007] [2024-11-15 14:18:59,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-15 14:18:59,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-15 14:18:59,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-15 14:18:59,349 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) [2024-11-15 14:18:59,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-15 14:19:00,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-15 14:19:00,513 INFO L255 TraceCheckSpWp]: Trace formula consists of 948 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-15 14:19:00,516 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-15 14:19:01,071 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-15 14:19:01,071 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-15 14:19:01,071 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-15 14:19:01,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826627557] [2024-11-15 14:19:01,072 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-15 14:19:01,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150778007] [2024-11-15 14:19:01,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150778007] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-15 14:19:01,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-15 14:19:01,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-15 14:19:01,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269474110] [2024-11-15 14:19:01,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-15 14:19:01,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-15 14:19:01,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-15 14:19:01,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-15 14:19:01,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-15 14:19:01,074 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) [2024-11-15 14:19:01,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-15 14:19:01,659 INFO L93 Difference]: Finished difference Result 247 states and 333 transitions. [2024-11-15 14:19:01,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-15 14:19:01,661 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 [2024-11-15 14:19:01,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-15 14:19:01,663 INFO L225 Difference]: With dead ends: 247 [2024-11-15 14:19:01,663 INFO L226 Difference]: Without dead ends: 174 [2024-11-15 14:19:01,664 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 [2024-11-15 14:19:01,664 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 [2024-11-15 14:19:01,665 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] [2024-11-15 14:19:01,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2024-11-15 14:19:01,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2024-11-15 14:19:01,671 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) [2024-11-15 14:19:01,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 229 transitions. [2024-11-15 14:19:01,672 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 229 transitions. Word has length 98 [2024-11-15 14:19:01,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-15 14:19:01,672 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 229 transitions. [2024-11-15 14:19:01,672 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) [2024-11-15 14:19:01,672 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 229 transitions. [2024-11-15 14:19:01,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-15 14:19:01,673 INFO L207 NwaCegarLoop]: Found error trace [2024-11-15 14:19:01,673 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] [2024-11-15 14:19:01,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-15 14:19:01,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-15 14:19:01,874 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-15 14:19:01,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-15 14:19:01,875 INFO L85 PathProgramCache]: Analyzing trace with hash -311994880, now seen corresponding path program 1 times [2024-11-15 14:19:01,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-15 14:19:01,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174921733] [2024-11-15 14:19:01,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-15 14:19:01,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-15 14:19:02,261 ERROR L246 FreeRefinementEngine]: Caught known exception: Const is only supported for infinite index sort [2024-11-15 14:19:02,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [679473009] [2024-11-15 14:19:02,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-15 14:19:02,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-15 14:19:02,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-15 14:19:02,263 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) [2024-11-15 14:19:02,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-15 14:19:03,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-15 14:19:03,420 INFO L255 TraceCheckSpWp]: Trace formula consists of 948 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-15 14:19:03,426 INFO L278 TraceCheckSpWp]: Computing forward predicates...