java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/rule60_list2.c_1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 01:33:42,397 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 01:33:42,399 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 01:33:42,410 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-08 01:33:42,411 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-08 01:33:42,412 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-08 01:33:42,413 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-08 01:33:42,415 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-08 01:33:42,417 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-08 01:33:42,418 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-08 01:33:42,419 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-08 01:33:42,420 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-08 01:33:42,420 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 01:33:42,421 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 01:33:42,422 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 01:33:42,423 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 01:33:42,424 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 01:33:42,425 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 01:33:42,427 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 01:33:42,429 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 01:33:42,430 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 01:33:42,431 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 01:33:42,432 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 01:33:42,433 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 01:33:42,435 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-08 01:33:42,436 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-08 01:33:42,436 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-08 01:33:42,437 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-08 01:33:42,437 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-08 01:33:42,438 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-08 01:33:42,438 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-08 01:33:42,439 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-08 01:33:42,440 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-08 01:33:42,441 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-08 01:33:42,442 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-08 01:33:42,442 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-08 01:33:42,442 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-08 01:33:42,443 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-08 01:33:42,443 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 01:33:42,444 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 01:33:42,445 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 01:33:42,445 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-08 01:33:42,460 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 01:33:42,460 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 01:33:42,461 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 01:33:42,461 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 01:33:42,461 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 01:33:42,462 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 01:33:42,462 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 01:33:42,462 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 01:33:42,462 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 01:33:42,463 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 01:33:42,463 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 01:33:42,463 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 01:33:42,463 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 01:33:42,463 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 01:33:42,464 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 01:33:42,464 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 01:33:42,464 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 01:33:42,464 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 01:33:42,464 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 01:33:42,465 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 01:33:42,465 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 01:33:42,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 01:33:42,465 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 01:33:42,465 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 01:33:42,466 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 01:33:42,466 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 01:33:42,466 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 01:33:42,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 01:33:42,466 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 01:33:42,504 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 01:33:42,522 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 01:33:42,529 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 01:33:42,531 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 01:33:42,531 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 01:33:42,532 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/rule60_list2.c_1.i [2019-09-08 01:33:42,605 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b1e0d89d/3e28d600247d4feea740a60eeae841c7/FLAG75ada57b7 [2019-09-08 01:33:43,146 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 01:33:43,147 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/rule60_list2.c_1.i [2019-09-08 01:33:43,164 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b1e0d89d/3e28d600247d4feea740a60eeae841c7/FLAG75ada57b7 [2019-09-08 01:33:43,456 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b1e0d89d/3e28d600247d4feea740a60eeae841c7 [2019-09-08 01:33:43,468 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 01:33:43,469 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 01:33:43,470 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 01:33:43,470 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 01:33:43,474 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 01:33:43,475 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 01:33:43" (1/1) ... [2019-09-08 01:33:43,478 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53a59530 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:33:43, skipping insertion in model container [2019-09-08 01:33:43,478 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 01:33:43" (1/1) ... [2019-09-08 01:33:43,484 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 01:33:43,526 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 01:33:43,931 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 01:33:43,937 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 01:33:43,986 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 01:33:44,064 INFO L192 MainTranslator]: Completed translation [2019-09-08 01:33:44,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:33:44 WrapperNode [2019-09-08 01:33:44,066 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 01:33:44,067 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 01:33:44,067 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 01:33:44,067 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 01:33:44,081 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:33:44" (1/1) ... [2019-09-08 01:33:44,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:33:44" (1/1) ... [2019-09-08 01:33:44,105 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:33:44" (1/1) ... [2019-09-08 01:33:44,106 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:33:44" (1/1) ... [2019-09-08 01:33:44,120 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:33:44" (1/1) ... [2019-09-08 01:33:44,122 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:33:44" (1/1) ... [2019-09-08 01:33:44,126 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:33:44" (1/1) ... [2019-09-08 01:33:44,133 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 01:33:44,134 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 01:33:44,136 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 01:33:44,136 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 01:33:44,137 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:33:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 01:33:44,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 01:33:44,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 01:33:44,200 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2019-09-08 01:33:44,200 INFO L138 BoogieDeclarations]: Found implementation of procedure __getMemory [2019-09-08 01:33:44,201 INFO L138 BoogieDeclarations]: Found implementation of procedure my_malloc [2019-09-08 01:33:44,201 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2019-09-08 01:33:44,201 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2019-09-08 01:33:44,201 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 01:33:44,201 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 01:33:44,202 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2019-09-08 01:33:44,202 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2019-09-08 01:33:44,202 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2019-09-08 01:33:44,203 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2019-09-08 01:33:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2019-09-08 01:33:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2019-09-08 01:33:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2019-09-08 01:33:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2019-09-08 01:33:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2019-09-08 01:33:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2019-09-08 01:33:44,206 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2019-09-08 01:33:44,206 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2019-09-08 01:33:44,206 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2019-09-08 01:33:44,207 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2019-09-08 01:33:44,207 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2019-09-08 01:33:44,208 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2019-09-08 01:33:44,208 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2019-09-08 01:33:44,208 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2019-09-08 01:33:44,209 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2019-09-08 01:33:44,209 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2019-09-08 01:33:44,209 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2019-09-08 01:33:44,209 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2019-09-08 01:33:44,209 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2019-09-08 01:33:44,209 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2019-09-08 01:33:44,210 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2019-09-08 01:33:44,210 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2019-09-08 01:33:44,210 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2019-09-08 01:33:44,210 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2019-09-08 01:33:44,210 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2019-09-08 01:33:44,210 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2019-09-08 01:33:44,211 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2019-09-08 01:33:44,211 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2019-09-08 01:33:44,211 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2019-09-08 01:33:44,211 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2019-09-08 01:33:44,211 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2019-09-08 01:33:44,211 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2019-09-08 01:33:44,211 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2019-09-08 01:33:44,211 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2019-09-08 01:33:44,212 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2019-09-08 01:33:44,212 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-08 01:33:44,212 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2019-09-08 01:33:44,212 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2019-09-08 01:33:44,212 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2019-09-08 01:33:44,212 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2019-09-08 01:33:44,212 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2019-09-08 01:33:44,212 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2019-09-08 01:33:44,213 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2019-09-08 01:33:44,213 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2019-09-08 01:33:44,213 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2019-09-08 01:33:44,213 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2019-09-08 01:33:44,213 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2019-09-08 01:33:44,213 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2019-09-08 01:33:44,214 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2019-09-08 01:33:44,214 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2019-09-08 01:33:44,214 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2019-09-08 01:33:44,214 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2019-09-08 01:33:44,214 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2019-09-08 01:33:44,214 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2019-09-08 01:33:44,215 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2019-09-08 01:33:44,215 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2019-09-08 01:33:44,215 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2019-09-08 01:33:44,215 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2019-09-08 01:33:44,215 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2019-09-08 01:33:44,215 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2019-09-08 01:33:44,216 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2019-09-08 01:33:44,216 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2019-09-08 01:33:44,216 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2019-09-08 01:33:44,216 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2019-09-08 01:33:44,216 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2019-09-08 01:33:44,216 INFO L130 BoogieDeclarations]: Found specification of procedure gets [2019-09-08 01:33:44,216 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2019-09-08 01:33:44,217 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2019-09-08 01:33:44,217 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2019-09-08 01:33:44,217 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2019-09-08 01:33:44,217 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-09-08 01:33:44,217 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2019-09-08 01:33:44,217 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2019-09-08 01:33:44,218 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2019-09-08 01:33:44,218 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2019-09-08 01:33:44,218 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2019-09-08 01:33:44,218 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2019-09-08 01:33:44,218 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2019-09-08 01:33:44,218 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2019-09-08 01:33:44,219 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2019-09-08 01:33:44,219 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2019-09-08 01:33:44,219 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2019-09-08 01:33:44,219 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2019-09-08 01:33:44,219 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2019-09-08 01:33:44,219 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2019-09-08 01:33:44,219 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2019-09-08 01:33:44,220 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2019-09-08 01:33:44,220 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2019-09-08 01:33:44,220 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2019-09-08 01:33:44,220 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2019-09-08 01:33:44,220 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2019-09-08 01:33:44,220 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2019-09-08 01:33:44,221 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2019-09-08 01:33:44,221 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2019-09-08 01:33:44,221 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2019-09-08 01:33:44,221 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2019-09-08 01:33:44,221 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2019-09-08 01:33:44,221 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2019-09-08 01:33:44,221 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-08 01:33:44,222 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-09-08 01:33:44,222 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-09-08 01:33:44,222 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-08 01:33:44,222 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-09-08 01:33:44,222 INFO L130 BoogieDeclarations]: Found specification of procedure memalign [2019-09-08 01:33:44,222 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-09-08 01:33:44,222 INFO L130 BoogieDeclarations]: Found specification of procedure pvalloc [2019-09-08 01:33:44,223 INFO L130 BoogieDeclarations]: Found specification of procedure __default_morecore [2019-09-08 01:33:44,223 INFO L130 BoogieDeclarations]: Found specification of procedure mallinfo [2019-09-08 01:33:44,223 INFO L130 BoogieDeclarations]: Found specification of procedure mallopt [2019-09-08 01:33:44,223 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_trim [2019-09-08 01:33:44,225 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_usable_size [2019-09-08 01:33:44,226 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_stats [2019-09-08 01:33:44,226 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_info [2019-09-08 01:33:44,226 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_get_state [2019-09-08 01:33:44,226 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_set_state [2019-09-08 01:33:44,226 INFO L130 BoogieDeclarations]: Found specification of procedure __malloc_check_init [2019-09-08 01:33:44,226 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-08 01:33:44,227 INFO L130 BoogieDeclarations]: Found specification of procedure __getMemory [2019-09-08 01:33:44,227 INFO L130 BoogieDeclarations]: Found specification of procedure my_malloc [2019-09-08 01:33:44,227 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2019-09-08 01:33:44,227 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2019-09-08 01:33:44,228 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 01:33:44,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 01:33:44,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-08 01:33:44,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-09-08 01:33:44,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 01:33:44,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-08 01:33:44,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-08 01:33:44,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-08 01:33:44,729 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 01:33:44,729 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-08 01:33:44,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 01:33:44 BoogieIcfgContainer [2019-09-08 01:33:44,731 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 01:33:44,732 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 01:33:44,732 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 01:33:44,735 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 01:33:44,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 01:33:43" (1/3) ... [2019-09-08 01:33:44,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ce91bf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 01:33:44, skipping insertion in model container [2019-09-08 01:33:44,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:33:44" (2/3) ... [2019-09-08 01:33:44,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ce91bf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 01:33:44, skipping insertion in model container [2019-09-08 01:33:44,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 01:33:44" (3/3) ... [2019-09-08 01:33:44,739 INFO L109 eAbstractionObserver]: Analyzing ICFG rule60_list2.c_1.i [2019-09-08 01:33:44,747 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 01:33:44,755 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 01:33:44,772 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 01:33:44,801 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 01:33:44,802 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 01:33:44,802 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 01:33:44,802 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 01:33:44,803 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 01:33:44,803 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 01:33:44,803 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 01:33:44,803 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 01:33:44,803 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 01:33:44,821 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2019-09-08 01:33:44,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-08 01:33:44,827 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:33:44,828 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:33:44,830 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:33:44,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:33:44,837 INFO L82 PathProgramCache]: Analyzing trace with hash -573637036, now seen corresponding path program 1 times [2019-09-08 01:33:44,839 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:33:44,840 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:33:44,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:33:44,894 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:33:44,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:33:44,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:33:45,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:33:45,081 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 01:33:45,082 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-08 01:33:45,086 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-08 01:33:45,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-08 01:33:45,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-08 01:33:45,100 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 6 states. [2019-09-08 01:33:45,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:33:45,202 INFO L93 Difference]: Finished difference Result 86 states and 112 transitions. [2019-09-08 01:33:45,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-08 01:33:45,204 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2019-09-08 01:33:45,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:33:45,215 INFO L225 Difference]: With dead ends: 86 [2019-09-08 01:33:45,215 INFO L226 Difference]: Without dead ends: 40 [2019-09-08 01:33:45,220 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-09-08 01:33:45,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-09-08 01:33:45,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2019-09-08 01:33:45,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-09-08 01:33:45,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2019-09-08 01:33:45,280 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 13 [2019-09-08 01:33:45,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:33:45,281 INFO L475 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2019-09-08 01:33:45,281 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-08 01:33:45,281 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2019-09-08 01:33:45,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-09-08 01:33:45,284 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:33:45,285 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-08 01:33:45,286 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:33:45,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:33:45,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1917870949, now seen corresponding path program 1 times [2019-09-08 01:33:45,289 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:33:45,289 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:33:45,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:33:45,296 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:33:45,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:33:45,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:33:45,528 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-08 01:33:45,529 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 01:33:45,529 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-08 01:33:45,532 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 01:33:45,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 01:33:45,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-08 01:33:45,533 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 7 states. [2019-09-08 01:33:45,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:33:45,576 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2019-09-08 01:33:45,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 01:33:45,576 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2019-09-08 01:33:45,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:33:45,580 INFO L225 Difference]: With dead ends: 65 [2019-09-08 01:33:45,580 INFO L226 Difference]: Without dead ends: 45 [2019-09-08 01:33:45,581 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-08 01:33:45,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-09-08 01:33:45,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2019-09-08 01:33:45,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-09-08 01:33:45,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2019-09-08 01:33:45,593 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 38 [2019-09-08 01:33:45,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:33:45,593 INFO L475 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2019-09-08 01:33:45,594 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 01:33:45,594 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2019-09-08 01:33:45,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-09-08 01:33:45,595 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:33:45,595 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-08 01:33:45,596 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:33:45,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:33:45,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1624467942, now seen corresponding path program 1 times [2019-09-08 01:33:45,596 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:33:45,596 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:33:45,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:33:45,598 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:33:45,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:33:45,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:33:45,735 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-08 01:33:45,736 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:33:45,736 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:33:45,755 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:33:45,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:33:45,825 INFO L256 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 26 conjunts are in the unsatisfiable core [2019-09-08 01:33:45,838 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:33:46,191 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-08 01:33:46,199 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 01:33:46,199 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [7] total 18 [2019-09-08 01:33:46,202 INFO L454 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-09-08 01:33:46,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-09-08 01:33:46,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2019-09-08 01:33:46,205 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand 18 states. [2019-09-08 01:33:47,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:33:47,236 INFO L93 Difference]: Finished difference Result 97 states and 117 transitions. [2019-09-08 01:33:47,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-09-08 01:33:47,237 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 38 [2019-09-08 01:33:47,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:33:47,241 INFO L225 Difference]: With dead ends: 97 [2019-09-08 01:33:47,241 INFO L226 Difference]: Without dead ends: 70 [2019-09-08 01:33:47,243 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=203, Invalid=987, Unknown=0, NotChecked=0, Total=1190 [2019-09-08 01:33:47,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2019-09-08 01:33:47,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 60. [2019-09-08 01:33:47,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2019-09-08 01:33:47,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 72 transitions. [2019-09-08 01:33:47,258 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 72 transitions. Word has length 38 [2019-09-08 01:33:47,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:33:47,258 INFO L475 AbstractCegarLoop]: Abstraction has 60 states and 72 transitions. [2019-09-08 01:33:47,258 INFO L476 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-09-08 01:33:47,258 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 72 transitions. [2019-09-08 01:33:47,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-09-08 01:33:47,260 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:33:47,260 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-08 01:33:47,260 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:33:47,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:33:47,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1321471087, now seen corresponding path program 1 times [2019-09-08 01:33:47,261 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:33:47,261 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:33:47,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:33:47,263 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:33:47,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:33:47,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:33:47,563 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:33:47,564 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:33:47,564 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 01:33:47,582 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:33:47,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:33:47,641 INFO L256 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 23 conjunts are in the unsatisfiable core [2019-09-08 01:33:47,647 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:33:47,835 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:33:47,840 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:33:47,840 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 24 [2019-09-08 01:33:47,841 INFO L454 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-09-08 01:33:47,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-09-08 01:33:47,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=494, Unknown=0, NotChecked=0, Total=552 [2019-09-08 01:33:47,843 INFO L87 Difference]: Start difference. First operand 60 states and 72 transitions. Second operand 24 states. [2019-09-08 01:33:48,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:33:48,616 INFO L93 Difference]: Finished difference Result 73 states and 87 transitions. [2019-09-08 01:33:48,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-08 01:33:48,616 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 45 [2019-09-08 01:33:48,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:33:48,618 INFO L225 Difference]: With dead ends: 73 [2019-09-08 01:33:48,618 INFO L226 Difference]: Without dead ends: 69 [2019-09-08 01:33:48,620 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=142, Invalid=1118, Unknown=0, NotChecked=0, Total=1260 [2019-09-08 01:33:48,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2019-09-08 01:33:48,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2019-09-08 01:33:48,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2019-09-08 01:33:48,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 79 transitions. [2019-09-08 01:33:48,632 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 79 transitions. Word has length 45 [2019-09-08 01:33:48,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:33:48,633 INFO L475 AbstractCegarLoop]: Abstraction has 68 states and 79 transitions. [2019-09-08 01:33:48,633 INFO L476 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-09-08 01:33:48,633 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 79 transitions. [2019-09-08 01:33:48,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-09-08 01:33:48,634 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:33:48,635 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-08 01:33:48,635 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:33:48,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:33:48,635 INFO L82 PathProgramCache]: Analyzing trace with hash 512124461, now seen corresponding path program 1 times [2019-09-08 01:33:48,635 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:33:48,635 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:33:48,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:33:48,637 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:33:48,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:33:48,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:33:48,909 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:33:48,909 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:33:48,909 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 01:33:48,923 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:33:48,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:33:48,971 INFO L256 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 23 conjunts are in the unsatisfiable core [2019-09-08 01:33:48,975 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:33:49,314 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:33:49,318 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:33:49,319 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2019-09-08 01:33:49,319 INFO L454 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-09-08 01:33:49,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-09-08 01:33:49,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=565, Unknown=0, NotChecked=0, Total=650 [2019-09-08 01:33:49,320 INFO L87 Difference]: Start difference. First operand 68 states and 79 transitions. Second operand 26 states. [2019-09-08 01:33:50,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:33:50,677 INFO L93 Difference]: Finished difference Result 99 states and 113 transitions. [2019-09-08 01:33:50,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-09-08 01:33:50,678 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 45 [2019-09-08 01:33:50,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:33:50,679 INFO L225 Difference]: With dead ends: 99 [2019-09-08 01:33:50,680 INFO L226 Difference]: Without dead ends: 77 [2019-09-08 01:33:50,681 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=307, Invalid=1585, Unknown=0, NotChecked=0, Total=1892 [2019-09-08 01:33:50,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2019-09-08 01:33:50,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 59. [2019-09-08 01:33:50,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2019-09-08 01:33:50,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2019-09-08 01:33:50,692 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 45 [2019-09-08 01:33:50,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:33:50,692 INFO L475 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2019-09-08 01:33:50,692 INFO L476 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-09-08 01:33:50,692 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2019-09-08 01:33:50,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-09-08 01:33:50,694 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:33:50,694 INFO L399 BasicCegarLoop]: trace histogram [3, 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] [2019-09-08 01:33:50,694 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:33:50,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:33:50,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1069126843, now seen corresponding path program 1 times [2019-09-08 01:33:50,695 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:33:50,695 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:33:50,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:33:50,696 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:33:50,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:33:50,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:33:50,952 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-08 01:33:50,952 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:33:50,952 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:33:50,967 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:33:51,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:33:51,017 INFO L256 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 25 conjunts are in the unsatisfiable core [2019-09-08 01:33:51,021 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:33:51,183 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-08 01:33:51,192 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:33:51,193 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 26 [2019-09-08 01:33:51,193 INFO L454 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-09-08 01:33:51,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-09-08 01:33:51,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=587, Unknown=0, NotChecked=0, Total=650 [2019-09-08 01:33:51,194 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand 26 states. [2019-09-08 01:33:52,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:33:52,240 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2019-09-08 01:33:52,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-09-08 01:33:52,240 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 57 [2019-09-08 01:33:52,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:33:52,243 INFO L225 Difference]: With dead ends: 73 [2019-09-08 01:33:52,244 INFO L226 Difference]: Without dead ends: 70 [2019-09-08 01:33:52,245 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=206, Invalid=1516, Unknown=0, NotChecked=0, Total=1722 [2019-09-08 01:33:52,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2019-09-08 01:33:52,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2019-09-08 01:33:52,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2019-09-08 01:33:52,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 79 transitions. [2019-09-08 01:33:52,255 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 79 transitions. Word has length 57 [2019-09-08 01:33:52,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:33:52,255 INFO L475 AbstractCegarLoop]: Abstraction has 69 states and 79 transitions. [2019-09-08 01:33:52,255 INFO L476 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-09-08 01:33:52,255 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 79 transitions. [2019-09-08 01:33:52,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-09-08 01:33:52,256 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:33:52,257 INFO L399 BasicCegarLoop]: trace histogram [3, 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] [2019-09-08 01:33:52,257 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:33:52,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:33:52,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1878473469, now seen corresponding path program 1 times [2019-09-08 01:33:52,258 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:33:52,258 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:33:52,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:33:52,259 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:33:52,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:33:52,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:33:52,455 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-09-08 01:33:52,455 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:33:52,455 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:33:52,472 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:33:52,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:33:52,522 INFO L256 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 23 conjunts are in the unsatisfiable core [2019-09-08 01:33:52,527 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:33:52,993 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (6)] Exception during sending of exit command (exit): Broken pipe [2019-09-08 01:33:52,997 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:33:52,998 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 20] total 32 [2019-09-08 01:33:52,998 INFO L454 AbstractCegarLoop]: Interpolant automaton has 32 states [2019-09-08 01:33:52,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2019-09-08 01:33:52,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2019-09-08 01:33:52,999 INFO L87 Difference]: Start difference. First operand 69 states and 79 transitions. Second operand 32 states. [2019-09-08 01:33:54,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:33:54,775 INFO L93 Difference]: Finished difference Result 100 states and 112 transitions. [2019-09-08 01:33:54,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-09-08 01:33:54,775 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 57 [2019-09-08 01:33:54,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:33:54,777 INFO L225 Difference]: With dead ends: 100 [2019-09-08 01:33:54,777 INFO L226 Difference]: Without dead ends: 83 [2019-09-08 01:33:54,779 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=394, Invalid=2912, Unknown=0, NotChecked=0, Total=3306 [2019-09-08 01:33:54,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2019-09-08 01:33:54,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 79. [2019-09-08 01:33:54,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2019-09-08 01:33:54,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 89 transitions. [2019-09-08 01:33:54,792 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 89 transitions. Word has length 57 [2019-09-08 01:33:54,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:33:54,792 INFO L475 AbstractCegarLoop]: Abstraction has 79 states and 89 transitions. [2019-09-08 01:33:54,793 INFO L476 AbstractCegarLoop]: Interpolant automaton has 32 states. [2019-09-08 01:33:54,793 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 89 transitions. [2019-09-08 01:33:54,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-09-08 01:33:54,794 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:33:54,794 INFO L399 BasicCegarLoop]: trace histogram [3, 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] [2019-09-08 01:33:54,794 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:33:54,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:33:54,795 INFO L82 PathProgramCache]: Analyzing trace with hash 482320829, now seen corresponding path program 1 times [2019-09-08 01:33:54,795 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:33:54,795 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:33:54,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:33:54,796 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:33:54,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:33:54,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:33:54,948 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-09-08 01:33:54,948 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:33:54,948 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 01:33:54,976 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:33:55,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:33:55,022 INFO L256 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 37 conjunts are in the unsatisfiable core [2019-09-08 01:33:55,025 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:33:55,061 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 01:33:55,107 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (7)] Exception during sending of exit command (exit): Broken pipe [2019-09-08 01:33:55,113 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:33:55,113 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2019-09-08 01:33:55,114 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-08 01:33:55,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-08 01:33:55,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-09-08 01:33:55,116 INFO L87 Difference]: Start difference. First operand 79 states and 89 transitions. Second operand 9 states. [2019-09-08 01:33:55,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:33:55,453 INFO L93 Difference]: Finished difference Result 91 states and 100 transitions. [2019-09-08 01:33:55,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-08 01:33:55,453 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2019-09-08 01:33:55,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:33:55,455 INFO L225 Difference]: With dead ends: 91 [2019-09-08 01:33:55,455 INFO L226 Difference]: Without dead ends: 74 [2019-09-08 01:33:55,460 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 56 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-09-08 01:33:55,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2019-09-08 01:33:55,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 64. [2019-09-08 01:33:55,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2019-09-08 01:33:55,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 70 transitions. [2019-09-08 01:33:55,494 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 70 transitions. Word has length 57 [2019-09-08 01:33:55,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:33:55,494 INFO L475 AbstractCegarLoop]: Abstraction has 64 states and 70 transitions. [2019-09-08 01:33:55,494 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-08 01:33:55,495 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 70 transitions. [2019-09-08 01:33:55,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-09-08 01:33:55,499 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:33:55,499 INFO L399 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 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] [2019-09-08 01:33:55,500 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:33:55,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:33:55,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1118751113, now seen corresponding path program 1 times [2019-09-08 01:33:55,500 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:33:55,501 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:33:55,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:33:55,503 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:33:55,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:33:55,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 01:33:55,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 01:33:55,648 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-08 01:33:55,732 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 13 could not be translated for associated CType STRUCT~~list_head?prev~*list_head?next~*list_head# [2019-09-08 01:33:55,733 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 16 could not be translated for associated CType STRUCT~~list_head?prev~*list_head?next~*list_head# [2019-09-08 01:33:55,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.09 01:33:55 BoogieIcfgContainer [2019-09-08 01:33:55,784 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-08 01:33:55,787 INFO L168 Benchmark]: Toolchain (without parser) took 12316.39 ms. Allocated memory was 135.3 MB in the beginning and 361.2 MB in the end (delta: 226.0 MB). Free memory was 89.4 MB in the beginning and 172.4 MB in the end (delta: -83.0 MB). Peak memory consumption was 142.9 MB. Max. memory is 7.1 GB. [2019-09-08 01:33:55,789 INFO L168 Benchmark]: CDTParser took 0.43 ms. Allocated memory is still 135.3 MB. Free memory was 108.5 MB in the beginning and 108.3 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-08 01:33:55,791 INFO L168 Benchmark]: CACSL2BoogieTranslator took 596.39 ms. Allocated memory was 135.3 MB in the beginning and 202.4 MB in the end (delta: 67.1 MB). Free memory was 89.2 MB in the beginning and 164.0 MB in the end (delta: -74.9 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. [2019-09-08 01:33:55,792 INFO L168 Benchmark]: Boogie Preprocessor took 66.72 ms. Allocated memory is still 202.4 MB. Free memory was 164.0 MB in the beginning and 161.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2019-09-08 01:33:55,798 INFO L168 Benchmark]: RCFGBuilder took 597.13 ms. Allocated memory is still 202.4 MB. Free memory was 161.4 MB in the beginning and 117.1 MB in the end (delta: 44.3 MB). Peak memory consumption was 44.3 MB. Max. memory is 7.1 GB. [2019-09-08 01:33:55,800 INFO L168 Benchmark]: TraceAbstraction took 11051.84 ms. Allocated memory was 202.4 MB in the beginning and 361.2 MB in the end (delta: 158.9 MB). Free memory was 117.1 MB in the beginning and 172.4 MB in the end (delta: -55.3 MB). Peak memory consumption was 103.6 MB. Max. memory is 7.1 GB. [2019-09-08 01:33:55,808 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43 ms. Allocated memory is still 135.3 MB. Free memory was 108.5 MB in the beginning and 108.3 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 596.39 ms. Allocated memory was 135.3 MB in the beginning and 202.4 MB in the end (delta: 67.1 MB). Free memory was 89.2 MB in the beginning and 164.0 MB in the end (delta: -74.9 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 66.72 ms. Allocated memory is still 202.4 MB. Free memory was 164.0 MB in the beginning and 161.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 597.13 ms. Allocated memory is still 202.4 MB. Free memory was 161.4 MB in the beginning and 117.1 MB in the end (delta: 44.3 MB). Peak memory consumption was 44.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11051.84 ms. Allocated memory was 202.4 MB in the beginning and 361.2 MB in the end (delta: 158.9 MB). Free memory was 117.1 MB in the beginning and 172.4 MB in the end (delta: -55.3 MB). Peak memory consumption was 103.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 13 could not be translated for associated CType STRUCT~~list_head?prev~*list_head?next~*list_head# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 16 could not be translated for associated CType STRUCT~~list_head?prev~*list_head?next~*list_head# * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L867] void * guard_malloc_counter = 0; [L887] struct list_head *elem = ((void *)0); [L900] static struct list_head head; VAL [\old(elem)=9, \old(elem)=14, \old(guard_malloc_counter)=12, \old(guard_malloc_counter)=11, \old(head)=null, \old(head)=null, elem={0:0}, guard_malloc_counter={0:0}, head={1:0}] [L903] struct list_head *dev1, *dev2; VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:0}, guard_malloc_counter={0:0}, head={1:0}] [L904] CALL, EXPR my_malloc(sizeof(*dev1)) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, \old(size)=8, elem={0:0}, guard_malloc_counter={0:0}, head={1:0}] [L879] CALL, EXPR __getMemory(size) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, \old(size)=8, elem={0:0}, guard_malloc_counter={0:0}, head={1:0}] [L871] (size > 0) ? (0) : __blast_assert () VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, \old(size)=8, elem={0:0}, guard_malloc_counter={0:0}, head={1:0}, size=8] [L872] guard_malloc_counter++ [L873] COND FALSE !(!__VERIFIER_nondet_int()) [L875] return (void *) guard_malloc_counter; VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, \old(size)=8, \result={0:1}, elem={0:0}, guard_malloc_counter={0:1}, head={1:0}, size=8] [L879] RET, EXPR __getMemory(size) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, \old(size)=8, __getMemory(size)={0:1}, elem={0:0}, guard_malloc_counter={0:1}, head={1:0}, size=8] [L879] return __getMemory(size); [L904] RET, EXPR my_malloc(sizeof(*dev1)) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:0}, guard_malloc_counter={0:1}, head={1:0}, my_malloc(sizeof(*dev1))={0:1}] [L904] dev1 = my_malloc(sizeof(*dev1)) [L905] CALL, EXPR my_malloc(sizeof(*dev2)) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=1, \old(size)=8, elem={0:0}, guard_malloc_counter={0:1}, head={1:0}] [L879] CALL, EXPR __getMemory(size) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=1, \old(guard_malloc_counter)=0, \old(size)=8, elem={0:0}, guard_malloc_counter={0:1}, head={1:0}] [L871] (size > 0) ? (0) : __blast_assert () VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=1, \old(guard_malloc_counter)=0, \old(size)=8, elem={0:0}, guard_malloc_counter={0:1}, head={1:0}, size=8] [L872] guard_malloc_counter++ [L873] COND FALSE !(!__VERIFIER_nondet_int()) [L875] return (void *) guard_malloc_counter; VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=1, \old(size)=8, \result={0:2}, elem={0:0}, guard_malloc_counter={0:2}, head={1:0}, size=8] [L879] RET, EXPR __getMemory(size) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=1, \old(guard_malloc_counter)=0, \old(size)=8, __getMemory(size)={0:2}, elem={0:0}, guard_malloc_counter={0:2}, head={1:0}, size=8] [L879] return __getMemory(size); [L905] RET, EXPR my_malloc(sizeof(*dev2)) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, dev1={0:1}, elem={0:0}, guard_malloc_counter={0:2}, head={1:0}, my_malloc(sizeof(*dev2))={0:2}] [L905] dev2 = my_malloc(sizeof(*dev2)) [L906] COND TRUE dev1!=((void *)0) && dev2!=((void *)0) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, dev1={0:1}, dev2={0:2}, elem={0:0}, guard_malloc_counter={0:2}, head={1:0}] [L907] CALL list_add(dev2, &head) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:0}, guard_malloc_counter={0:2}, head={1:0}, head={1:0}, new={0:2}] [L890] (new!=elem) ? (0) : __blast_assert () VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:0}, guard_malloc_counter={0:2}, head={1:0}, head={1:0}, head={1:0}, new={0:2}, new={0:2}] [L891] COND TRUE __VERIFIER_nondet_int() [L892] elem = new VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:2}, guard_malloc_counter={0:2}, head={1:0}, head={1:0}, head={1:0}, new={0:2}, new={0:2}] [L907] RET list_add(dev2, &head) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, dev1={0:1}, dev2={0:2}, elem={0:2}, guard_malloc_counter={0:2}, head={1:0}] [L908] CALL list_add(dev1, &head) VAL [\old(elem)=0, \old(elem)=2, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:2}, guard_malloc_counter={0:2}, head={1:0}, head={1:0}, new={0:1}] [L890] (new!=elem) ? (0) : __blast_assert () VAL [\old(elem)=2, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:2}, guard_malloc_counter={0:2}, head={1:0}, head={1:0}, head={1:0}, new={0:1}, new={0:1}] [L891] COND TRUE __VERIFIER_nondet_int() [L892] elem = new VAL [\old(elem)=0, \old(elem)=2, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, guard_malloc_counter={0:2}, head={1:0}, head={1:0}, head={1:0}, new={0:1}, new={0:1}] [L908] RET list_add(dev1, &head) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, dev1={0:1}, dev2={0:2}, elem={0:1}, guard_malloc_counter={0:2}, head={1:0}] [L909] CALL list_del(dev2) VAL [\old(elem)=0, \old(elem)=1, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, entry={0:2}, guard_malloc_counter={0:2}, head={1:0}] [L896] COND FALSE !(entry==elem) VAL [\old(elem)=0, \old(elem)=1, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, entry={0:2}, entry={0:2}, guard_malloc_counter={0:2}, head={1:0}] [L909] RET list_del(dev2) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, dev1={0:1}, dev2={0:2}, elem={0:1}, guard_malloc_counter={0:2}, head={1:0}] [L910] CALL list_add(dev2, &head) VAL [\old(elem)=1, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, guard_malloc_counter={0:2}, head={1:0}, head={1:0}, new={0:2}] [L890] (new!=elem) ? (0) : __blast_assert () VAL [\old(elem)=1, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, guard_malloc_counter={0:2}, head={1:0}, head={1:0}, head={1:0}, new={0:2}, new={0:2}] [L891] COND FALSE !(__VERIFIER_nondet_int()) [L910] RET list_add(dev2, &head) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, dev1={0:1}, dev2={0:2}, elem={0:1}, guard_malloc_counter={0:2}, head={1:0}] [L913] CALL list_add(dev1, &head) VAL [\old(elem)=0, \old(elem)=1, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, guard_malloc_counter={0:2}, head={1:0}, head={1:0}, new={0:1}] [L890] (new!=elem) ? (0) : __blast_assert () VAL [\old(elem)=1, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, guard_malloc_counter={0:2}, head={1:0}, head={1:0}, head={1:0}, new={0:1}, new={0:1}] [L890] CALL __blast_assert () VAL [\old(elem)=0, \old(elem)=1, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, guard_malloc_counter={0:2}, head={1:0}] [L6] __VERIFIER_error() VAL [\old(elem)=1, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, guard_malloc_counter={0:2}, head={1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 48 locations, 1 error locations. UNSAFE Result, 10.9s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 6.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 322 SDtfs, 490 SDslu, 1424 SDs, 0 SdLazy, 4747 SolverSat, 575 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 515 GetRequests, 285 SyntacticMatches, 3 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1214 ImplicationChecksByTransitivity, 4.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=79occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 44 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 713 NumberOfCodeBlocks, 713 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 635 ConstructedInterpolants, 0 QuantifiedInterpolants, 106542 SizeOfPredicates, 41 NumberOfNonLiveVariables, 1705 ConjunctsInSsa, 157 ConjunctsInUnsatCore, 14 InterpolantComputations, 3 PerfectInterpolantSequences, 136/211 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...