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_list.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:09:26,280 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:09:26,283 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:09:26,295 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:09:26,296 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:09:26,297 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:09:26,298 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:09:26,300 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:09:26,302 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:09:26,303 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:09:26,304 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:09:26,305 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:09:26,305 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:09:26,306 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:09:26,307 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:09:26,308 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:09:26,309 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:09:26,310 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:09:26,312 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:09:26,314 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:09:26,316 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:09:26,317 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:09:26,318 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:09:26,319 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:09:26,321 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:09:26,322 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:09:26,322 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:09:26,323 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:09:26,323 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:09:26,324 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:09:26,325 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:09:26,326 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:09:26,326 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:09:26,327 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:09:26,328 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:09:26,329 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:09:26,330 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:09:26,330 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:09:26,330 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:09:26,331 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:09:26,332 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:09:26,332 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 [2019-10-13 19:09:26,351 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:09:26,351 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:09:26,353 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:09:26,353 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:09:26,353 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:09:26,354 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:09:26,354 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:09:26,355 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:09:26,355 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:09:26,355 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:09:26,355 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:09:26,356 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:09:26,356 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:09:26,356 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:09:26,356 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:09:26,356 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:09:26,357 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:09:26,357 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:09:26,358 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:09:26,358 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:09:26,359 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:09:26,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:09:26,359 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:09:26,359 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:09:26,359 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:09:26,360 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:09:26,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:09:26,360 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:09:26,360 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:09:26,686 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:09:26,700 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:09:26,704 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:09:26,705 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:09:26,706 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:09:26,707 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/rule60_list.i [2019-10-13 19:09:26,785 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2735b9cae/23edfcea19d545d28252cbd9ae4cbb42/FLAG74e6a9a5f [2019-10-13 19:09:27,287 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:09:27,291 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/rule60_list.i [2019-10-13 19:09:27,301 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2735b9cae/23edfcea19d545d28252cbd9ae4cbb42/FLAG74e6a9a5f [2019-10-13 19:09:27,654 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2735b9cae/23edfcea19d545d28252cbd9ae4cbb42 [2019-10-13 19:09:27,664 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:09:27,666 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:09:27,667 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:09:27,667 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:09:27,670 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:09:27,671 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:09:27" (1/1) ... [2019-10-13 19:09:27,673 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1950c0f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:27, skipping insertion in model container [2019-10-13 19:09:27,673 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:09:27" (1/1) ... [2019-10-13 19:09:27,679 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:09:27,727 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:09:28,114 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:09:28,125 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:09:28,166 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:09:28,231 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:09:28,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:28 WrapperNode [2019-10-13 19:09:28,232 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:09:28,233 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:09:28,233 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:09:28,233 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:09:28,246 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:28" (1/1) ... [2019-10-13 19:09:28,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:28" (1/1) ... [2019-10-13 19:09:28,263 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:28" (1/1) ... [2019-10-13 19:09:28,263 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:28" (1/1) ... [2019-10-13 19:09:28,277 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:28" (1/1) ... [2019-10-13 19:09:28,282 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:28" (1/1) ... [2019-10-13 19:09:28,287 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:28" (1/1) ... [2019-10-13 19:09:28,297 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:09:28,298 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:09:28,298 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:09:28,299 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:09:28,300 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:28" (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 [2019-10-13 19:09:28,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:09:28,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:09:28,357 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2019-10-13 19:09:28,357 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2019-10-13 19:09:28,357 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2019-10-13 19:09:28,357 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:09:28,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:09:28,357 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2019-10-13 19:09:28,358 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2019-10-13 19:09:28,358 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2019-10-13 19:09:28,358 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2019-10-13 19:09:28,358 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2019-10-13 19:09:28,358 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2019-10-13 19:09:28,359 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2019-10-13 19:09:28,359 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2019-10-13 19:09:28,359 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2019-10-13 19:09:28,359 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2019-10-13 19:09:28,359 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2019-10-13 19:09:28,359 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2019-10-13 19:09:28,360 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2019-10-13 19:09:28,360 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2019-10-13 19:09:28,360 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2019-10-13 19:09:28,360 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2019-10-13 19:09:28,360 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2019-10-13 19:09:28,360 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2019-10-13 19:09:28,360 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2019-10-13 19:09:28,361 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2019-10-13 19:09:28,361 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2019-10-13 19:09:28,361 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2019-10-13 19:09:28,361 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2019-10-13 19:09:28,361 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2019-10-13 19:09:28,361 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2019-10-13 19:09:28,362 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2019-10-13 19:09:28,362 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2019-10-13 19:09:28,362 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2019-10-13 19:09:28,362 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2019-10-13 19:09:28,362 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2019-10-13 19:09:28,362 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2019-10-13 19:09:28,363 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2019-10-13 19:09:28,363 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2019-10-13 19:09:28,363 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2019-10-13 19:09:28,363 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2019-10-13 19:09:28,363 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2019-10-13 19:09:28,363 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2019-10-13 19:09:28,363 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2019-10-13 19:09:28,364 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2019-10-13 19:09:28,364 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 19:09:28,364 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2019-10-13 19:09:28,364 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2019-10-13 19:09:28,364 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2019-10-13 19:09:28,364 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2019-10-13 19:09:28,365 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2019-10-13 19:09:28,365 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2019-10-13 19:09:28,365 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2019-10-13 19:09:28,365 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2019-10-13 19:09:28,365 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2019-10-13 19:09:28,365 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2019-10-13 19:09:28,365 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2019-10-13 19:09:28,366 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2019-10-13 19:09:28,366 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2019-10-13 19:09:28,366 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2019-10-13 19:09:28,366 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2019-10-13 19:09:28,366 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2019-10-13 19:09:28,366 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2019-10-13 19:09:28,367 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2019-10-13 19:09:28,367 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2019-10-13 19:09:28,367 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2019-10-13 19:09:28,367 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2019-10-13 19:09:28,367 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2019-10-13 19:09:28,367 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2019-10-13 19:09:28,368 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2019-10-13 19:09:28,368 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2019-10-13 19:09:28,368 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2019-10-13 19:09:28,368 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2019-10-13 19:09:28,368 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2019-10-13 19:09:28,368 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2019-10-13 19:09:28,369 INFO L130 BoogieDeclarations]: Found specification of procedure gets [2019-10-13 19:09:28,369 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2019-10-13 19:09:28,369 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2019-10-13 19:09:28,369 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2019-10-13 19:09:28,369 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2019-10-13 19:09:28,369 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 19:09:28,369 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2019-10-13 19:09:28,370 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2019-10-13 19:09:28,370 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2019-10-13 19:09:28,370 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2019-10-13 19:09:28,370 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2019-10-13 19:09:28,370 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2019-10-13 19:09:28,370 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2019-10-13 19:09:28,371 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2019-10-13 19:09:28,371 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2019-10-13 19:09:28,371 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2019-10-13 19:09:28,372 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2019-10-13 19:09:28,372 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2019-10-13 19:09:28,372 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2019-10-13 19:09:28,373 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2019-10-13 19:09:28,373 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2019-10-13 19:09:28,373 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2019-10-13 19:09:28,373 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2019-10-13 19:09:28,373 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2019-10-13 19:09:28,373 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2019-10-13 19:09:28,373 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2019-10-13 19:09:28,374 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2019-10-13 19:09:28,374 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2019-10-13 19:09:28,374 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2019-10-13 19:09:28,374 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2019-10-13 19:09:28,374 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2019-10-13 19:09:28,374 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2019-10-13 19:09:28,375 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2019-10-13 19:09:28,375 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:09:28,375 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-13 19:09:28,375 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-13 19:09:28,375 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:09:28,375 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-13 19:09:28,375 INFO L130 BoogieDeclarations]: Found specification of procedure memalign [2019-10-13 19:09:28,376 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-13 19:09:28,376 INFO L130 BoogieDeclarations]: Found specification of procedure pvalloc [2019-10-13 19:09:28,376 INFO L130 BoogieDeclarations]: Found specification of procedure __default_morecore [2019-10-13 19:09:28,376 INFO L130 BoogieDeclarations]: Found specification of procedure mallinfo [2019-10-13 19:09:28,376 INFO L130 BoogieDeclarations]: Found specification of procedure mallopt [2019-10-13 19:09:28,377 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_trim [2019-10-13 19:09:28,378 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_usable_size [2019-10-13 19:09:28,378 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_stats [2019-10-13 19:09:28,378 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_info [2019-10-13 19:09:28,379 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_get_state [2019-10-13 19:09:28,379 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_set_state [2019-10-13 19:09:28,380 INFO L130 BoogieDeclarations]: Found specification of procedure __malloc_check_init [2019-10-13 19:09:28,380 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2019-10-13 19:09:28,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:09:28,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:09:28,380 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2019-10-13 19:09:28,381 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:09:28,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:09:28,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:09:28,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:09:28,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-13 19:09:28,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:09:28,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:09:28,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:09:28,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:09:28,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:09:28,841 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:09:28,841 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-13 19:09:28,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:09:28 BoogieIcfgContainer [2019-10-13 19:09:28,843 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:09:28,845 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:09:28,845 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:09:28,849 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:09:28,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:09:27" (1/3) ... [2019-10-13 19:09:28,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@142d38b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:09:28, skipping insertion in model container [2019-10-13 19:09:28,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:28" (2/3) ... [2019-10-13 19:09:28,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@142d38b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:09:28, skipping insertion in model container [2019-10-13 19:09:28,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:09:28" (3/3) ... [2019-10-13 19:09:28,854 INFO L109 eAbstractionObserver]: Analyzing ICFG rule60_list.i [2019-10-13 19:09:28,864 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:09:28,871 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:09:28,882 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:09:28,907 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:09:28,907 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:09:28,907 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:09:28,907 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:09:28,908 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:09:28,908 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:09:28,908 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:09:28,908 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:09:28,926 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2019-10-13 19:09:28,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-13 19:09:28,930 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:09:28,931 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:09:28,933 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:09:28,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:09:28,937 INFO L82 PathProgramCache]: Analyzing trace with hash 2070742689, now seen corresponding path program 1 times [2019-10-13 19:09:28,944 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:09:28,945 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69143809] [2019-10-13 19:09:28,945 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:09:28,945 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:09:28,946 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:09:29,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:29,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:29,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:09:29,373 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69143809] [2019-10-13 19:09:29,374 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:09:29,374 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 19:09:29,374 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906388292] [2019-10-13 19:09:29,380 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:09:29,380 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:09:29,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:09:29,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:09:29,419 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 8 states. [2019-10-13 19:09:29,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:09:29,754 INFO L93 Difference]: Finished difference Result 55 states and 66 transitions. [2019-10-13 19:09:29,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 19:09:29,756 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2019-10-13 19:09:29,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:09:29,765 INFO L225 Difference]: With dead ends: 55 [2019-10-13 19:09:29,766 INFO L226 Difference]: Without dead ends: 26 [2019-10-13 19:09:29,774 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:09:29,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-10-13 19:09:29,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-10-13 19:09:29,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-10-13 19:09:29,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2019-10-13 19:09:29,832 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 12 [2019-10-13 19:09:29,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:09:29,833 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2019-10-13 19:09:29,834 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:09:29,834 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2019-10-13 19:09:29,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-13 19:09:29,835 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:09:29,835 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:09:29,838 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:09:29,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:09:29,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1302580324, now seen corresponding path program 1 times [2019-10-13 19:09:29,839 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:09:29,840 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936418733] [2019-10-13 19:09:29,840 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:09:29,840 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:09:29,840 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:09:29,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:30,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:30,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:30,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:09:30,210 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936418733] [2019-10-13 19:09:30,210 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:09:30,210 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 19:09:30,211 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660228709] [2019-10-13 19:09:30,212 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 19:09:30,213 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:09:30,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 19:09:30,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:09:30,213 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 11 states. [2019-10-13 19:09:30,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:09:30,748 INFO L93 Difference]: Finished difference Result 28 states and 27 transitions. [2019-10-13 19:09:30,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-13 19:09:30,748 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 18 [2019-10-13 19:09:30,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:09:30,749 INFO L225 Difference]: With dead ends: 28 [2019-10-13 19:09:30,750 INFO L226 Difference]: Without dead ends: 25 [2019-10-13 19:09:30,751 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2019-10-13 19:09:30,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-10-13 19:09:30,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-10-13 19:09:30,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-10-13 19:09:30,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 24 transitions. [2019-10-13 19:09:30,757 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 24 transitions. Word has length 18 [2019-10-13 19:09:30,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:09:30,757 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 24 transitions. [2019-10-13 19:09:30,757 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 19:09:30,758 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 24 transitions. [2019-10-13 19:09:30,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-13 19:09:30,759 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:09:30,759 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:09:30,759 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:09:30,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:09:30,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1070618069, now seen corresponding path program 1 times [2019-10-13 19:09:30,760 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:09:30,760 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853250520] [2019-10-13 19:09:30,760 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:09:30,760 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:09:30,761 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:09:30,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:30,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:30,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:30,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:30,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:09:30,966 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853250520] [2019-10-13 19:09:30,967 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574623212] [2019-10-13 19:09:30,967 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:09:31,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:31,087 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 22 conjunts are in the unsatisfiable core [2019-10-13 19:09:31,094 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:09:31,182 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-10-13 19:09:31,187 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 19:09:31,193 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 19:09:31,193 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-13 19:09:31,193 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2019-10-13 19:09:31,267 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2019-10-13 19:09:31,267 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 19:09:31,270 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 19:09:31,271 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-13 19:09:31,271 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2019-10-13 19:09:31,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:09:31,273 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:09:31,273 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 15 [2019-10-13 19:09:31,274 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719946552] [2019-10-13 19:09:31,274 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:09:31,274 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:09:31,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:09:31,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2019-10-13 19:09:31,275 INFO L87 Difference]: Start difference. First operand 25 states and 24 transitions. Second operand 7 states. [2019-10-13 19:09:31,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:09:31,353 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2019-10-13 19:09:31,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:09:31,354 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2019-10-13 19:09:31,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:09:31,355 INFO L225 Difference]: With dead ends: 25 [2019-10-13 19:09:31,355 INFO L226 Difference]: Without dead ends: 0 [2019-10-13 19:09:31,355 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2019-10-13 19:09:31,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-13 19:09:31,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-13 19:09:31,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-13 19:09:31,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-13 19:09:31,356 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2019-10-13 19:09:31,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:09:31,357 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-13 19:09:31,357 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:09:31,357 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-13 19:09:31,357 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-13 19:09:31,558 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:09:31,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-13 19:09:31,903 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-13 19:09:31,904 INFO L439 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |~#head~0.base| |old(~#head~0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#length)| |#length|) (= |~#head~0.offset| |old(~#head~0.offset)|)) [2019-10-13 19:09:31,904 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-13 19:09:31,904 INFO L443 ceAbstractionStarter]: For program point list_delFINAL(lines 871 874) no Hoare annotation was computed. [2019-10-13 19:09:31,905 INFO L443 ceAbstractionStarter]: For program point list_delEXIT(lines 871 874) no Hoare annotation was computed. [2019-10-13 19:09:31,905 INFO L443 ceAbstractionStarter]: For program point L872(line 872) no Hoare annotation was computed. [2019-10-13 19:09:31,905 INFO L439 ceAbstractionStarter]: At program point list_delENTRY(lines 871 874) the Hoare annotation is: (or (not (<= |~#head~0.offset| 0)) (not (= |list_del_#in~entry.offset| 0)) (not (= 1 (select (select |old(#memory_int)| |list_del_#in~entry.base|) 8))) (and (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) (not (<= 0 |~#head~0.offset|))) [2019-10-13 19:09:31,905 INFO L439 ceAbstractionStarter]: At program point L872-2(line 872) the Hoare annotation is: (or (not (<= |~#head~0.offset| 0)) (not (= |list_del_#in~entry.offset| 0)) (not (= 1 (select (select |old(#memory_int)| |list_del_#in~entry.base|) 8))) (not (<= 0 |~#head~0.offset|))) [2019-10-13 19:09:31,905 INFO L443 ceAbstractionStarter]: For program point L872-3(line 872) no Hoare annotation was computed. [2019-10-13 19:09:31,905 INFO L439 ceAbstractionStarter]: At program point L867-2(line 867) the Hoare annotation is: (or (not (<= |~#head~0.offset| 0)) (not (<= 0 |~#head~0.offset|)) (not (= 0 (select (select |old(#memory_int)| |list_add_#in~new.base|) (+ |list_add_#in~new.offset| 8))))) [2019-10-13 19:09:31,906 INFO L439 ceAbstractionStarter]: At program point list_addENTRY(lines 866 869) the Hoare annotation is: (or (not (<= |~#head~0.offset| 0)) (not (<= 0 |~#head~0.offset|)) (and (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) (not (= 0 (select (select |old(#memory_int)| |list_add_#in~new.base|) (+ |list_add_#in~new.offset| 8))))) [2019-10-13 19:09:31,906 INFO L443 ceAbstractionStarter]: For program point L867-3(line 867) no Hoare annotation was computed. [2019-10-13 19:09:31,906 INFO L443 ceAbstractionStarter]: For program point list_addFINAL(lines 866 869) no Hoare annotation was computed. [2019-10-13 19:09:31,908 INFO L443 ceAbstractionStarter]: For program point list_addEXIT(lines 866 869) no Hoare annotation was computed. [2019-10-13 19:09:31,908 INFO L443 ceAbstractionStarter]: For program point L867(line 867) no Hoare annotation was computed. [2019-10-13 19:09:31,908 INFO L443 ceAbstractionStarter]: For program point __blast_assertEXIT(lines 4 7) no Hoare annotation was computed. [2019-10-13 19:09:31,908 INFO L443 ceAbstractionStarter]: For program point __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2019-10-13 19:09:31,908 INFO L443 ceAbstractionStarter]: For program point __blast_assertFINAL(lines 4 7) no Hoare annotation was computed. [2019-10-13 19:09:31,908 INFO L446 ceAbstractionStarter]: At program point __blast_assertENTRY(lines 4 7) the Hoare annotation is: true [2019-10-13 19:09:31,908 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-13 19:09:31,909 INFO L439 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (and (<= |~#head~0.offset| 0) (<= 0 |~#head~0.offset|)) [2019-10-13 19:09:31,909 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-13 19:09:31,909 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-13 19:09:31,909 INFO L443 ceAbstractionStarter]: For program point L881(lines 881 886) no Hoare annotation was computed. [2019-10-13 19:09:31,909 INFO L443 ceAbstractionStarter]: For program point L881-1(lines 881 886) no Hoare annotation was computed. [2019-10-13 19:09:31,910 INFO L439 ceAbstractionStarter]: At program point mainENTRY(lines 878 888) the Hoare annotation is: (or (not (<= |~#head~0.offset| 0)) (and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) (not (<= 0 |~#head~0.offset|))) [2019-10-13 19:09:31,910 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 878 888) no Hoare annotation was computed. [2019-10-13 19:09:31,910 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 878 888) no Hoare annotation was computed. [2019-10-13 19:09:31,911 INFO L439 ceAbstractionStarter]: At program point L884(line 884) the Hoare annotation is: (or (and (= (select (select |#memory_int| main_~dev~0.base) (+ main_~dev~0.offset 8)) 0) (= main_~dev~0.offset 0)) (not (<= |~#head~0.offset| 0)) (not (<= 0 |~#head~0.offset|))) [2019-10-13 19:09:31,911 INFO L439 ceAbstractionStarter]: At program point L883(line 883) the Hoare annotation is: (or (and (= (select (select |#memory_int| main_~dev~0.base) (+ main_~dev~0.offset 8)) 0) (= main_~dev~0.offset 0)) (not (<= |~#head~0.offset| 0)) (not (<= 0 |~#head~0.offset|))) [2019-10-13 19:09:31,911 INFO L439 ceAbstractionStarter]: At program point L883-1(line 883) the Hoare annotation is: (or (not (<= |~#head~0.offset| 0)) (not (<= 0 |~#head~0.offset|)) (and (= main_~dev~0.offset 0) (= 1 (select (select |#memory_int| main_~dev~0.base) 8)))) [2019-10-13 19:09:31,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:09:31 BoogieIcfgContainer [2019-10-13 19:09:31,917 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-13 19:09:31,922 INFO L168 Benchmark]: Toolchain (without parser) took 4253.44 ms. Allocated memory was 144.2 MB in the beginning and 249.6 MB in the end (delta: 105.4 MB). Free memory was 99.7 MB in the beginning and 208.3 MB in the end (delta: -108.6 MB). Peak memory consumption was 118.6 MB. Max. memory is 7.1 GB. [2019-10-13 19:09:31,923 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 144.2 MB. Free memory was 119.2 MB in the beginning and 118.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-13 19:09:31,925 INFO L168 Benchmark]: CACSL2BoogieTranslator took 565.56 ms. Allocated memory was 144.2 MB in the beginning and 201.3 MB in the end (delta: 57.1 MB). Free memory was 99.5 MB in the beginning and 166.1 MB in the end (delta: -66.6 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. [2019-10-13 19:09:31,926 INFO L168 Benchmark]: Boogie Preprocessor took 64.81 ms. Allocated memory is still 201.3 MB. Free memory was 166.1 MB in the beginning and 163.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2019-10-13 19:09:31,927 INFO L168 Benchmark]: RCFGBuilder took 545.71 ms. Allocated memory is still 201.3 MB. Free memory was 163.4 MB in the beginning and 120.6 MB in the end (delta: 42.8 MB). Peak memory consumption was 42.8 MB. Max. memory is 7.1 GB. [2019-10-13 19:09:31,932 INFO L168 Benchmark]: TraceAbstraction took 3072.24 ms. Allocated memory was 201.3 MB in the beginning and 249.6 MB in the end (delta: 48.2 MB). Free memory was 120.6 MB in the beginning and 208.3 MB in the end (delta: -87.7 MB). Peak memory consumption was 82.4 MB. Max. memory is 7.1 GB. [2019-10-13 19:09:31,942 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 144.2 MB. Free memory was 119.2 MB in the beginning and 118.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 565.56 ms. Allocated memory was 144.2 MB in the beginning and 201.3 MB in the end (delta: 57.1 MB). Free memory was 99.5 MB in the beginning and 166.1 MB in the end (delta: -66.6 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 64.81 ms. Allocated memory is still 201.3 MB. Free memory was 166.1 MB in the beginning and 163.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 545.71 ms. Allocated memory is still 201.3 MB. Free memory was 163.4 MB in the beginning and 120.6 MB in the end (delta: 42.8 MB). Peak memory consumption was 42.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3072.24 ms. Allocated memory was 201.3 MB in the beginning and 249.6 MB in the end (delta: 48.2 MB). Free memory was 120.6 MB in the beginning and 208.3 MB in the end (delta: -87.7 MB). Peak memory consumption was 82.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 31 locations, 1 error locations. Result: SAFE, OverallTime: 3.0s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, HoareTripleCheckerStatistics: 49 SDtfs, 71 SDslu, 106 SDs, 0 SdLazy, 244 SolverSat, 47 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 71 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 21 PreInvPairs, 23 NumberOfFragments, 217 HoareAnnotationTreeSize, 21 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 238 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 78 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 74 ConstructedInterpolants, 0 QuantifiedInterpolants, 9505 SizeOfPredicates, 8 NumberOfNonLiveVariables, 157 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 3/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...