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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/ldv-regression/rule60_list2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:28:33,422 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:28:33,424 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:28:33,436 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:28:33,437 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:28:33,438 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:28:33,439 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:28:33,441 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:28:33,443 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:28:33,443 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:28:33,444 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:28:33,446 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:28:33,446 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:28:33,447 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:28:33,448 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:28:33,449 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:28:33,450 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:28:33,451 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:28:33,458 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:28:33,460 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:28:33,462 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:28:33,463 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:28:33,469 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:28:33,470 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:28:33,472 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:28:33,473 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:28:33,473 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:28:33,478 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:28:33,478 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:28:33,480 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:28:33,480 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:28:33,481 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:28:33,482 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:28:33,484 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:28:33,485 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:28:33,485 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:28:33,486 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:28:33,486 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:28:33,486 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:28:33,490 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:28:33,490 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:28:33,491 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-20 13:28:33,511 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:28:33,513 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:28:33,513 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:28:33,513 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:28:33,515 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:28:33,515 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:28:33,515 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:28:33,515 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:28:33,515 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:28:33,515 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:28:33,516 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:28:33,516 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:28:33,517 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:28:33,517 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:28:33,517 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:28:33,518 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:28:33,518 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:28:33,519 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:28:33,519 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:28:33,519 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:28:33,519 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:28:33,519 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:28:33,519 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:28:33,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:28:33,520 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:28:33,520 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:28:33,521 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:28:33,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:28:33,521 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:28:33,521 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:28:33,579 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:28:33,592 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:28:33,595 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:28:33,597 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:28:33,597 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:28:33,598 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/rule60_list2.i [2019-09-20 13:28:33,667 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aac0842ce/8a9cf41feb0e46739ba9a6148a32ffa5/FLAG71e8a1568 [2019-09-20 13:28:34,145 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:28:34,148 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/rule60_list2.i [2019-09-20 13:28:34,165 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aac0842ce/8a9cf41feb0e46739ba9a6148a32ffa5/FLAG71e8a1568 [2019-09-20 13:28:34,512 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aac0842ce/8a9cf41feb0e46739ba9a6148a32ffa5 [2019-09-20 13:28:34,526 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:28:34,528 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:28:34,529 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:28:34,530 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:28:34,534 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:28:34,535 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:28:34" (1/1) ... [2019-09-20 13:28:34,538 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13e491ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:34, skipping insertion in model container [2019-09-20 13:28:34,539 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:28:34" (1/1) ... [2019-09-20 13:28:34,547 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:28:34,596 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:28:35,130 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:28:35,140 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:28:35,189 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:28:35,261 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:28:35,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:35 WrapperNode [2019-09-20 13:28:35,262 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:28:35,262 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:28:35,263 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:28:35,263 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:28:35,277 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:35" (1/1) ... [2019-09-20 13:28:35,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:35" (1/1) ... [2019-09-20 13:28:35,292 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:35" (1/1) ... [2019-09-20 13:28:35,293 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:35" (1/1) ... [2019-09-20 13:28:35,310 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:35" (1/1) ... [2019-09-20 13:28:35,314 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:35" (1/1) ... [2019-09-20 13:28:35,318 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:35" (1/1) ... [2019-09-20 13:28:35,324 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:28:35,325 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:28:35,325 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:28:35,325 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:28:35,326 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:35" (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 [2019-09-20 13:28:35,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:28:35,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:28:35,395 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2019-09-20 13:28:35,396 INFO L138 BoogieDeclarations]: Found implementation of procedure __getMemory [2019-09-20 13:28:35,396 INFO L138 BoogieDeclarations]: Found implementation of procedure my_malloc [2019-09-20 13:28:35,396 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2019-09-20 13:28:35,396 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2019-09-20 13:28:35,396 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:28:35,396 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:28:35,397 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2019-09-20 13:28:35,397 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2019-09-20 13:28:35,397 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2019-09-20 13:28:35,398 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2019-09-20 13:28:35,398 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2019-09-20 13:28:35,399 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2019-09-20 13:28:35,399 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2019-09-20 13:28:35,400 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2019-09-20 13:28:35,400 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2019-09-20 13:28:35,400 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2019-09-20 13:28:35,401 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2019-09-20 13:28:35,401 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2019-09-20 13:28:35,401 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2019-09-20 13:28:35,401 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2019-09-20 13:28:35,401 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2019-09-20 13:28:35,402 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2019-09-20 13:28:35,403 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2019-09-20 13:28:35,403 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2019-09-20 13:28:35,403 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2019-09-20 13:28:35,403 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2019-09-20 13:28:35,404 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2019-09-20 13:28:35,404 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2019-09-20 13:28:35,404 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2019-09-20 13:28:35,404 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2019-09-20 13:28:35,404 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2019-09-20 13:28:35,404 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2019-09-20 13:28:35,404 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2019-09-20 13:28:35,405 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2019-09-20 13:28:35,405 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2019-09-20 13:28:35,405 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2019-09-20 13:28:35,405 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2019-09-20 13:28:35,405 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2019-09-20 13:28:35,405 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2019-09-20 13:28:35,405 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2019-09-20 13:28:35,406 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2019-09-20 13:28:35,406 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2019-09-20 13:28:35,406 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2019-09-20 13:28:35,406 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2019-09-20 13:28:35,407 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2019-09-20 13:28:35,407 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-20 13:28:35,407 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2019-09-20 13:28:35,407 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2019-09-20 13:28:35,407 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2019-09-20 13:28:35,407 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2019-09-20 13:28:35,408 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2019-09-20 13:28:35,408 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2019-09-20 13:28:35,408 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2019-09-20 13:28:35,408 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2019-09-20 13:28:35,408 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2019-09-20 13:28:35,409 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2019-09-20 13:28:35,409 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2019-09-20 13:28:35,409 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2019-09-20 13:28:35,409 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2019-09-20 13:28:35,409 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2019-09-20 13:28:35,409 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2019-09-20 13:28:35,410 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2019-09-20 13:28:35,410 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2019-09-20 13:28:35,410 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2019-09-20 13:28:35,410 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2019-09-20 13:28:35,410 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2019-09-20 13:28:35,411 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2019-09-20 13:28:35,411 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2019-09-20 13:28:35,411 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2019-09-20 13:28:35,411 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2019-09-20 13:28:35,412 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2019-09-20 13:28:35,412 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2019-09-20 13:28:35,412 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2019-09-20 13:28:35,413 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2019-09-20 13:28:35,413 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2019-09-20 13:28:35,413 INFO L130 BoogieDeclarations]: Found specification of procedure gets [2019-09-20 13:28:35,414 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2019-09-20 13:28:35,414 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2019-09-20 13:28:35,414 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2019-09-20 13:28:35,414 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2019-09-20 13:28:35,414 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-09-20 13:28:35,414 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2019-09-20 13:28:35,415 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2019-09-20 13:28:35,416 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2019-09-20 13:28:35,416 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2019-09-20 13:28:35,416 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2019-09-20 13:28:35,416 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2019-09-20 13:28:35,417 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2019-09-20 13:28:35,417 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2019-09-20 13:28:35,417 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2019-09-20 13:28:35,417 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2019-09-20 13:28:35,417 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2019-09-20 13:28:35,417 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2019-09-20 13:28:35,418 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2019-09-20 13:28:35,418 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2019-09-20 13:28:35,418 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2019-09-20 13:28:35,418 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2019-09-20 13:28:35,418 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2019-09-20 13:28:35,418 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2019-09-20 13:28:35,418 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2019-09-20 13:28:35,419 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2019-09-20 13:28:35,419 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2019-09-20 13:28:35,419 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2019-09-20 13:28:35,419 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2019-09-20 13:28:35,419 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2019-09-20 13:28:35,419 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2019-09-20 13:28:35,419 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2019-09-20 13:28:35,420 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2019-09-20 13:28:35,420 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:28:35,420 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-09-20 13:28:35,420 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-09-20 13:28:35,420 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:28:35,421 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-09-20 13:28:35,421 INFO L130 BoogieDeclarations]: Found specification of procedure memalign [2019-09-20 13:28:35,421 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-09-20 13:28:35,422 INFO L130 BoogieDeclarations]: Found specification of procedure pvalloc [2019-09-20 13:28:35,422 INFO L130 BoogieDeclarations]: Found specification of procedure __default_morecore [2019-09-20 13:28:35,423 INFO L130 BoogieDeclarations]: Found specification of procedure mallinfo [2019-09-20 13:28:35,423 INFO L130 BoogieDeclarations]: Found specification of procedure mallopt [2019-09-20 13:28:35,423 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_trim [2019-09-20 13:28:35,424 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_usable_size [2019-09-20 13:28:35,424 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_stats [2019-09-20 13:28:35,424 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_info [2019-09-20 13:28:35,425 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_get_state [2019-09-20 13:28:35,425 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_set_state [2019-09-20 13:28:35,425 INFO L130 BoogieDeclarations]: Found specification of procedure __malloc_check_init [2019-09-20 13:28:35,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:28:35,426 INFO L130 BoogieDeclarations]: Found specification of procedure __getMemory [2019-09-20 13:28:35,426 INFO L130 BoogieDeclarations]: Found specification of procedure my_malloc [2019-09-20 13:28:35,426 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2019-09-20 13:28:35,426 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2019-09-20 13:28:35,426 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:28:35,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:28:35,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:28:35,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-09-20 13:28:35,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:28:35,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:28:35,432 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:28:35,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:28:35,955 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:28:35,955 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-20 13:28:35,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:28:35 BoogieIcfgContainer [2019-09-20 13:28:35,957 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:28:35,958 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:28:35,958 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:28:35,961 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:28:35,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:28:34" (1/3) ... [2019-09-20 13:28:35,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c9c11de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:28:35, skipping insertion in model container [2019-09-20 13:28:35,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:28:35" (2/3) ... [2019-09-20 13:28:35,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c9c11de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:28:35, skipping insertion in model container [2019-09-20 13:28:35,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:28:35" (3/3) ... [2019-09-20 13:28:35,965 INFO L109 eAbstractionObserver]: Analyzing ICFG rule60_list2.i [2019-09-20 13:28:35,975 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:28:35,984 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:28:36,002 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:28:36,030 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:28:36,030 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:28:36,031 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:28:36,031 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:28:36,031 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:28:36,031 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:28:36,032 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:28:36,032 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:28:36,048 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2019-09-20 13:28:36,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-20 13:28:36,058 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:28:36,059 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:28:36,061 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:28:36,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:28:36,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1135050545, now seen corresponding path program 1 times [2019-09-20 13:28:36,071 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:28:36,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:36,140 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:28:36,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:36,141 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:28:36,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:28:36,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:28:36,309 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:28:36,309 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:28:36,310 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:28:36,315 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:28:36,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:28:36,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:28:36,333 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 6 states. [2019-09-20 13:28:36,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:28:36,430 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2019-09-20 13:28:36,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:28:36,432 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2019-09-20 13:28:36,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:28:36,441 INFO L225 Difference]: With dead ends: 44 [2019-09-20 13:28:36,441 INFO L226 Difference]: Without dead ends: 39 [2019-09-20 13:28:36,443 INFO L636 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 [2019-09-20 13:28:36,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-09-20 13:28:36,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2019-09-20 13:28:36,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-09-20 13:28:36,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2019-09-20 13:28:36,482 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 13 [2019-09-20 13:28:36,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:28:36,483 INFO L475 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2019-09-20 13:28:36,483 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:28:36,483 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2019-09-20 13:28:36,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-09-20 13:28:36,485 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:28:36,486 INFO L407 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] [2019-09-20 13:28:36,486 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:28:36,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:28:36,487 INFO L82 PathProgramCache]: Analyzing trace with hash -925661111, now seen corresponding path program 1 times [2019-09-20 13:28:36,487 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:28:36,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:36,496 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:28:36,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:36,496 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:28:36,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:28:36,730 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-20 13:28:36,730 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:28:36,731 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:28:36,731 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:28:36,732 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:28:36,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:28:36,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:28:36,733 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand 7 states. [2019-09-20 13:28:36,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:28:36,766 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2019-09-20 13:28:36,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:28:36,768 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2019-09-20 13:28:36,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:28:36,772 INFO L225 Difference]: With dead ends: 46 [2019-09-20 13:28:36,773 INFO L226 Difference]: Without dead ends: 44 [2019-09-20 13:28:36,773 INFO L636 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 [2019-09-20 13:28:36,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-09-20 13:28:36,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2019-09-20 13:28:36,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-09-20 13:28:36,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2019-09-20 13:28:36,785 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 38 [2019-09-20 13:28:36,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:28:36,785 INFO L475 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2019-09-20 13:28:36,785 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:28:36,786 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2019-09-20 13:28:36,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-09-20 13:28:36,787 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:28:36,787 INFO L407 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] [2019-09-20 13:28:36,787 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:28:36,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:28:36,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1219064118, now seen corresponding path program 1 times [2019-09-20 13:28:36,788 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:28:36,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:36,792 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:28:36,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:28:36,792 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:28:36,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:28:36,927 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-20 13:28:36,928 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:28:36,929 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:28:36,930 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 39 with the following transitions: [2019-09-20 13:28:36,932 INFO L207 CegarAbsIntRunner]: [0], [2], [3], [4], [5], [6], [8], [10], [13], [23], [28], [39], [50], [53], [58], [61], [62], [63], [67], [68], [69], [70], [71], [72], [73], [81], [85], [86], [87] [2019-09-20 13:28:36,999 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:28:36,999 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:28:37,056 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-20 13:28:37,058 INFO L272 AbstractInterpreter]: Visited 2 different actions 2 times. Never merged. Never widened. Performed 20 root evaluator evaluations with a maximum evaluation depth of 0. Performed 20 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 26 variables. [2019-09-20 13:28:37,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:28:37,062 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-20 13:28:37,095 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-20 13:28:37,096 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-20 13:28:37,098 INFO L420 sIntCurrentIteration]: We unified 37 AI predicates to 37 [2019-09-20 13:28:37,098 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-20 13:28:37,099 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:28:37,099 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 7 [2019-09-20 13:28:37,099 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:28:37,100 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:28:37,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:28:37,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:28:37,100 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand 2 states. [2019-09-20 13:28:37,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:28:37,101 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-20 13:28:37,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:28:37,101 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 38 [2019-09-20 13:28:37,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:28:37,102 INFO L225 Difference]: With dead ends: 2 [2019-09-20 13:28:37,102 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:28:37,102 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:28:37,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:28:37,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:28:37,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:28:37,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:28:37,103 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2019-09-20 13:28:37,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:28:37,103 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:28:37,104 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:28:37,104 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:28:37,104 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:28:37,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:28:37 BoogieIcfgContainer [2019-09-20 13:28:37,111 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:28:37,116 INFO L168 Benchmark]: Toolchain (without parser) took 2585.11 ms. Allocated memory was 139.5 MB in the beginning and 223.3 MB in the end (delta: 83.9 MB). Free memory was 85.5 MB in the beginning and 154.1 MB in the end (delta: -68.6 MB). Peak memory consumption was 15.3 MB. Max. memory is 7.1 GB. [2019-09-20 13:28:37,118 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 139.5 MB. Free memory was 105.4 MB in the beginning and 105.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:28:37,120 INFO L168 Benchmark]: CACSL2BoogieTranslator took 732.65 ms. Allocated memory was 139.5 MB in the beginning and 199.8 MB in the end (delta: 60.3 MB). Free memory was 85.3 MB in the beginning and 160.8 MB in the end (delta: -75.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. [2019-09-20 13:28:37,122 INFO L168 Benchmark]: Boogie Preprocessor took 61.76 ms. Allocated memory is still 199.8 MB. Free memory was 160.8 MB in the beginning and 158.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2019-09-20 13:28:37,123 INFO L168 Benchmark]: RCFGBuilder took 632.27 ms. Allocated memory is still 199.8 MB. Free memory was 158.2 MB in the beginning and 112.9 MB in the end (delta: 45.3 MB). Peak memory consumption was 45.3 MB. Max. memory is 7.1 GB. [2019-09-20 13:28:37,125 INFO L168 Benchmark]: TraceAbstraction took 1152.79 ms. Allocated memory was 199.8 MB in the beginning and 223.3 MB in the end (delta: 23.6 MB). Free memory was 112.3 MB in the beginning and 154.1 MB in the end (delta: -41.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-20 13:28:37,136 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 139.5 MB. Free memory was 105.4 MB in the beginning and 105.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 732.65 ms. Allocated memory was 139.5 MB in the beginning and 199.8 MB in the end (delta: 60.3 MB). Free memory was 85.3 MB in the beginning and 160.8 MB in the end (delta: -75.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 61.76 ms. Allocated memory is still 199.8 MB. Free memory was 160.8 MB in the beginning and 158.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 632.27 ms. Allocated memory is still 199.8 MB. Free memory was 158.2 MB in the beginning and 112.9 MB in the end (delta: 45.3 MB). Peak memory consumption was 45.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1152.79 ms. Allocated memory was 199.8 MB in the beginning and 223.3 MB in the end (delta: 23.6 MB). Free memory was 112.3 MB in the beginning and 154.1 MB in the end (delta: -41.9 MB). There was no memory consumed. 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 8 procedures, 47 locations, 1 error locations. SAFE Result, 1.0s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 87 SDtfs, 16 SDslu, 367 SDs, 0 SdLazy, 37 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 1.0 AbsIntWeakeningRatio, 1.4054054054054055 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 89 NumberOfCodeBlocks, 89 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 86 ConstructedInterpolants, 0 QuantifiedInterpolants, 6530 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 17/22 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...