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/alt_test.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 01:45:52,649 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 01:45:52,651 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 01:45:52,663 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-10 01:45:52,663 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-10 01:45:52,664 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-10 01:45:52,666 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-10 01:45:52,668 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-10 01:45:52,670 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-10 01:45:52,670 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-10 01:45:52,671 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-10 01:45:52,673 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-10 01:45:52,673 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-10 01:45:52,674 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-10 01:45:52,675 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-10 01:45:52,676 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-10 01:45:52,677 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-10 01:45:52,681 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-10 01:45:52,685 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-10 01:45:52,691 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-10 01:45:52,693 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-10 01:45:52,695 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-10 01:45:52,698 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-10 01:45:52,698 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-10 01:45:52,700 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-10 01:45:52,701 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-10 01:45:52,701 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-10 01:45:52,702 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-10 01:45:52,703 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-10 01:45:52,704 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-10 01:45:52,704 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-10 01:45:52,707 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-10 01:45:52,708 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-10 01:45:52,709 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-10 01:45:52,713 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-10 01:45:52,713 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-10 01:45:52,714 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-10 01:45:52,714 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-10 01:45:52,715 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 01:45:52,716 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 01:45:52,717 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 01:45:52,718 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 [2019-09-10 01:45:52,746 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 01:45:52,746 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 01:45:52,747 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 01:45:52,747 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 01:45:52,748 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 01:45:52,748 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 01:45:52,748 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 01:45:52,748 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 01:45:52,749 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 01:45:52,749 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 01:45:52,751 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 01:45:52,752 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 01:45:52,752 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 01:45:52,752 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 01:45:52,752 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 01:45:52,753 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 01:45:52,753 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 01:45:52,753 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 01:45:52,753 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 01:45:52,754 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 01:45:52,754 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 01:45:52,754 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 01:45:52,754 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 01:45:52,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 01:45:52,755 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 01:45:52,755 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 01:45:52,755 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 01:45:52,755 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 01:45:52,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 01:45:52,756 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 01:45:52,816 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 01:45:52,833 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 01:45:52,838 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 01:45:52,840 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 01:45:52,840 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 01:45:52,842 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/alt_test.i [2019-09-10 01:45:52,911 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e142fed9/062150d7b1b540119e242b04c3cb9d1c/FLAG3e7ee6ee4 [2019-09-10 01:45:53,463 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 01:45:53,464 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/alt_test.i [2019-09-10 01:45:53,481 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e142fed9/062150d7b1b540119e242b04c3cb9d1c/FLAG3e7ee6ee4 [2019-09-10 01:45:53,806 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e142fed9/062150d7b1b540119e242b04c3cb9d1c [2019-09-10 01:45:53,815 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 01:45:53,816 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 01:45:53,817 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 01:45:53,817 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 01:45:53,821 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 01:45:53,822 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:45:53" (1/1) ... [2019-09-10 01:45:53,826 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39e02a95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:53, skipping insertion in model container [2019-09-10 01:45:53,826 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:45:53" (1/1) ... [2019-09-10 01:45:53,832 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 01:45:53,893 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 01:45:54,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:45:54,399 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 01:45:54,442 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:45:54,569 INFO L192 MainTranslator]: Completed translation [2019-09-10 01:45:54,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:54 WrapperNode [2019-09-10 01:45:54,569 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 01:45:54,570 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 01:45:54,570 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 01:45:54,571 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 01:45:54,586 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:54" (1/1) ... [2019-09-10 01:45:54,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:54" (1/1) ... [2019-09-10 01:45:54,605 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:54" (1/1) ... [2019-09-10 01:45:54,605 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:54" (1/1) ... [2019-09-10 01:45:54,620 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:54" (1/1) ... [2019-09-10 01:45:54,622 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:54" (1/1) ... [2019-09-10 01:45:54,626 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:54" (1/1) ... [2019-09-10 01:45:54,634 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 01:45:54,634 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 01:45:54,635 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 01:45:54,635 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 01:45:54,636 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:54" (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 [2019-09-10 01:45:54,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 01:45:54,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 01:45:54,706 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2019-09-10 01:45:54,706 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 01:45:54,706 INFO L138 BoogieDeclarations]: Found implementation of procedure l_malloc [2019-09-10 01:45:54,706 INFO L138 BoogieDeclarations]: Found implementation of procedure l_free [2019-09-10 01:45:54,707 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 01:45:54,707 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2019-09-10 01:45:54,707 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2019-09-10 01:45:54,707 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2019-09-10 01:45:54,707 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2019-09-10 01:45:54,708 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2019-09-10 01:45:54,708 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2019-09-10 01:45:54,708 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2019-09-10 01:45:54,708 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2019-09-10 01:45:54,708 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2019-09-10 01:45:54,709 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2019-09-10 01:45:54,709 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2019-09-10 01:45:54,709 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2019-09-10 01:45:54,709 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2019-09-10 01:45:54,710 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2019-09-10 01:45:54,710 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2019-09-10 01:45:54,710 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2019-09-10 01:45:54,710 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2019-09-10 01:45:54,710 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2019-09-10 01:45:54,710 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2019-09-10 01:45:54,711 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2019-09-10 01:45:54,711 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2019-09-10 01:45:54,712 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2019-09-10 01:45:54,713 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2019-09-10 01:45:54,713 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2019-09-10 01:45:54,713 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2019-09-10 01:45:54,713 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2019-09-10 01:45:54,713 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2019-09-10 01:45:54,713 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2019-09-10 01:45:54,714 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2019-09-10 01:45:54,714 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2019-09-10 01:45:54,714 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2019-09-10 01:45:54,714 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2019-09-10 01:45:54,714 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2019-09-10 01:45:54,715 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2019-09-10 01:45:54,715 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2019-09-10 01:45:54,715 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2019-09-10 01:45:54,715 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2019-09-10 01:45:54,715 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2019-09-10 01:45:54,716 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-10 01:45:54,716 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2019-09-10 01:45:54,716 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2019-09-10 01:45:54,716 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2019-09-10 01:45:54,716 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2019-09-10 01:45:54,716 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2019-09-10 01:45:54,717 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2019-09-10 01:45:54,717 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2019-09-10 01:45:54,717 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2019-09-10 01:45:54,717 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2019-09-10 01:45:54,717 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2019-09-10 01:45:54,717 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2019-09-10 01:45:54,717 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2019-09-10 01:45:54,718 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2019-09-10 01:45:54,718 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2019-09-10 01:45:54,718 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2019-09-10 01:45:54,718 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2019-09-10 01:45:54,718 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2019-09-10 01:45:54,718 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2019-09-10 01:45:54,719 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2019-09-10 01:45:54,719 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2019-09-10 01:45:54,719 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2019-09-10 01:45:54,719 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2019-09-10 01:45:54,720 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2019-09-10 01:45:54,720 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2019-09-10 01:45:54,720 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2019-09-10 01:45:54,720 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2019-09-10 01:45:54,720 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2019-09-10 01:45:54,721 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2019-09-10 01:45:54,721 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2019-09-10 01:45:54,722 INFO L130 BoogieDeclarations]: Found specification of procedure gets [2019-09-10 01:45:54,722 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2019-09-10 01:45:54,722 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2019-09-10 01:45:54,722 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2019-09-10 01:45:54,723 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2019-09-10 01:45:54,723 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-09-10 01:45:54,723 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2019-09-10 01:45:54,723 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2019-09-10 01:45:54,724 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2019-09-10 01:45:54,724 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2019-09-10 01:45:54,725 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2019-09-10 01:45:54,725 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2019-09-10 01:45:54,726 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2019-09-10 01:45:54,726 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2019-09-10 01:45:54,726 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2019-09-10 01:45:54,726 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2019-09-10 01:45:54,727 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2019-09-10 01:45:54,727 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2019-09-10 01:45:54,727 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2019-09-10 01:45:54,727 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2019-09-10 01:45:54,727 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2019-09-10 01:45:54,728 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2019-09-10 01:45:54,728 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2019-09-10 01:45:54,728 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2019-09-10 01:45:54,728 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2019-09-10 01:45:54,728 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2019-09-10 01:45:54,728 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2019-09-10 01:45:54,728 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2019-09-10 01:45:54,729 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2019-09-10 01:45:54,729 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2019-09-10 01:45:54,729 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2019-09-10 01:45:54,729 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2019-09-10 01:45:54,729 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2019-09-10 01:45:54,730 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-09-10 01:45:54,730 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-09-10 01:45:54,730 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-09-10 01:45:54,730 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-09-10 01:45:54,731 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-09-10 01:45:54,731 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-09-10 01:45:54,731 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-09-10 01:45:54,731 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-09-10 01:45:54,732 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-09-10 01:45:54,732 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-09-10 01:45:54,732 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-09-10 01:45:54,733 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-09-10 01:45:54,733 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-09-10 01:45:54,733 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-09-10 01:45:54,734 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-09-10 01:45:54,734 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-09-10 01:45:54,734 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-09-10 01:45:54,734 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-09-10 01:45:54,734 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-09-10 01:45:54,734 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-09-10 01:45:54,735 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-09-10 01:45:54,735 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-09-10 01:45:54,735 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-09-10 01:45:54,735 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-09-10 01:45:54,736 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-09-10 01:45:54,736 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-09-10 01:45:54,736 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-09-10 01:45:54,736 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-09-10 01:45:54,736 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-09-10 01:45:54,737 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-09-10 01:45:54,737 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-09-10 01:45:54,740 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-09-10 01:45:54,741 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-09-10 01:45:54,741 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-09-10 01:45:54,741 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-09-10 01:45:54,748 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-09-10 01:45:54,748 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-09-10 01:45:54,749 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-09-10 01:45:54,749 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-09-10 01:45:54,749 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-09-10 01:45:54,749 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-09-10 01:45:54,750 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-09-10 01:45:54,750 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-09-10 01:45:54,750 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-09-10 01:45:54,750 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-09-10 01:45:54,750 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-09-10 01:45:54,750 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-09-10 01:45:54,751 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-09-10 01:45:54,751 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-09-10 01:45:54,751 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-09-10 01:45:54,751 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-10 01:45:54,751 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-09-10 01:45:54,751 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-09-10 01:45:54,752 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-10 01:45:54,752 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-09-10 01:45:54,752 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-09-10 01:45:54,752 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-09-10 01:45:54,752 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-09-10 01:45:54,752 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-09-10 01:45:54,752 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-09-10 01:45:54,753 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-09-10 01:45:54,753 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-10 01:45:54,753 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-09-10 01:45:54,753 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-09-10 01:45:54,753 INFO L130 BoogieDeclarations]: Found specification of procedure __secure_getenv [2019-09-10 01:45:54,753 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-09-10 01:45:54,754 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-09-10 01:45:54,754 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-09-10 01:45:54,754 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-09-10 01:45:54,754 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-09-10 01:45:54,754 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-09-10 01:45:54,754 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-09-10 01:45:54,755 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-09-10 01:45:54,755 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-09-10 01:45:54,755 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-09-10 01:45:54,755 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-09-10 01:45:54,755 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-09-10 01:45:54,755 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-09-10 01:45:54,755 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-09-10 01:45:54,756 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-09-10 01:45:54,756 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-09-10 01:45:54,756 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-09-10 01:45:54,756 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-09-10 01:45:54,756 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-09-10 01:45:54,756 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-09-10 01:45:54,757 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-09-10 01:45:54,757 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-09-10 01:45:54,757 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-09-10 01:45:54,757 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-09-10 01:45:54,757 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-09-10 01:45:54,757 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-09-10 01:45:54,758 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-09-10 01:45:54,758 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-09-10 01:45:54,758 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-09-10 01:45:54,758 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-09-10 01:45:54,758 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-09-10 01:45:54,758 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-09-10 01:45:54,759 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-09-10 01:45:54,759 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-09-10 01:45:54,760 INFO L130 BoogieDeclarations]: Found specification of procedure posix_openpt [2019-09-10 01:45:54,760 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-09-10 01:45:54,761 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2019-09-10 01:45:54,761 INFO L130 BoogieDeclarations]: Found specification of procedure l_malloc [2019-09-10 01:45:54,761 INFO L130 BoogieDeclarations]: Found specification of procedure l_free [2019-09-10 01:45:54,761 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 01:45:54,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-10 01:45:54,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-10 01:45:54,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 01:45:54,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 01:45:55,351 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 01:45:55,351 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-10 01:45:55,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:45:55 BoogieIcfgContainer [2019-09-10 01:45:55,353 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 01:45:55,354 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 01:45:55,354 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 01:45:55,357 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 01:45:55,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 01:45:53" (1/3) ... [2019-09-10 01:45:55,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f65979c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:45:55, skipping insertion in model container [2019-09-10 01:45:55,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:54" (2/3) ... [2019-09-10 01:45:55,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f65979c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:45:55, skipping insertion in model container [2019-09-10 01:45:55,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:45:55" (3/3) ... [2019-09-10 01:45:55,361 INFO L109 eAbstractionObserver]: Analyzing ICFG alt_test.i [2019-09-10 01:45:55,371 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 01:45:55,379 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 01:45:55,396 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 01:45:55,436 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 01:45:55,437 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 01:45:55,437 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 01:45:55,437 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 01:45:55,437 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 01:45:55,437 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 01:45:55,437 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 01:45:55,437 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 01:45:55,453 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2019-09-10 01:45:55,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-09-10 01:45:55,462 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:45:55,463 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:45:55,465 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:45:55,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:45:55,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1074821315, now seen corresponding path program 1 times [2019-09-10 01:45:55,473 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:45:55,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:45:55,530 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:45:55,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:45:55,530 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:45:55,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:45:55,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:45:55,647 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:45:55,647 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 01:45:55,648 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:45:55,652 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 01:45:55,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 01:45:55,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 01:45:55,665 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 3 states. [2019-09-10 01:45:55,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:45:55,692 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2019-09-10 01:45:55,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 01:45:55,694 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-09-10 01:45:55,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:45:55,703 INFO L225 Difference]: With dead ends: 29 [2019-09-10 01:45:55,703 INFO L226 Difference]: Without dead ends: 24 [2019-09-10 01:45:55,705 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 01:45:55,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-09-10 01:45:55,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-09-10 01:45:55,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-09-10 01:45:55,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2019-09-10 01:45:55,745 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 19 [2019-09-10 01:45:55,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:45:55,745 INFO L475 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2019-09-10 01:45:55,745 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 01:45:55,745 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2019-09-10 01:45:55,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-09-10 01:45:55,746 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:45:55,746 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:45:55,747 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:45:55,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:45:55,747 INFO L82 PathProgramCache]: Analyzing trace with hash 373756737, now seen corresponding path program 1 times [2019-09-10 01:45:55,747 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:45:55,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:45:55,749 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:45:55,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:45:55,750 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:45:55,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:45:55,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:45:55,807 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:45:55,807 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 01:45:55,807 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:45:55,809 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 01:45:55,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 01:45:55,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 01:45:55,810 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 3 states. [2019-09-10 01:45:55,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:45:55,840 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2019-09-10 01:45:55,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 01:45:55,841 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-09-10 01:45:55,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:45:55,842 INFO L225 Difference]: With dead ends: 28 [2019-09-10 01:45:55,843 INFO L226 Difference]: Without dead ends: 27 [2019-09-10 01:45:55,844 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 01:45:55,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-09-10 01:45:55,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-09-10 01:45:55,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-09-10 01:45:55,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2019-09-10 01:45:55,850 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 19 [2019-09-10 01:45:55,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:45:55,850 INFO L475 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2019-09-10 01:45:55,851 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 01:45:55,851 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2019-09-10 01:45:55,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-09-10 01:45:55,852 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:45:55,852 INFO L399 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, 1] [2019-09-10 01:45:55,852 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:45:55,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:45:55,852 INFO L82 PathProgramCache]: Analyzing trace with hash -568191789, now seen corresponding path program 1 times [2019-09-10 01:45:55,853 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:45:55,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:45:55,855 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:45:55,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:45:55,855 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:45:55,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:45:56,005 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:45:56,006 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:45:56,006 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-10 01:45:56,006 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:45:56,007 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-10 01:45:56,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-10 01:45:56,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-10 01:45:56,008 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 8 states. [2019-09-10 01:45:56,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:45:56,103 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2019-09-10 01:45:56,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-10 01:45:56,104 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2019-09-10 01:45:56,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:45:56,105 INFO L225 Difference]: With dead ends: 30 [2019-09-10 01:45:56,105 INFO L226 Difference]: Without dead ends: 27 [2019-09-10 01:45:56,105 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-09-10 01:45:56,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-09-10 01:45:56,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-09-10 01:45:56,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-09-10 01:45:56,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2019-09-10 01:45:56,110 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 25 [2019-09-10 01:45:56,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:45:56,111 INFO L475 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2019-09-10 01:45:56,111 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-10 01:45:56,111 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2019-09-10 01:45:56,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-09-10 01:45:56,112 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:45:56,112 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:45:56,112 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:45:56,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:45:56,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1903526385, now seen corresponding path program 1 times [2019-09-10 01:45:56,113 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:45:56,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:45:56,115 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:45:56,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:45:56,115 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:45:56,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-10 01:45:56,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-10 01:45:56,192 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-10 01:45:56,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 01:45:56 BoogieIcfgContainer [2019-09-10 01:45:56,262 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 01:45:56,266 INFO L168 Benchmark]: Toolchain (without parser) took 2447.65 ms. Allocated memory was 134.7 MB in the beginning and 228.6 MB in the end (delta: 93.8 MB). Free memory was 89.2 MB in the beginning and 151.5 MB in the end (delta: -62.3 MB). Peak memory consumption was 31.6 MB. Max. memory is 7.1 GB. [2019-09-10 01:45:56,267 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 134.7 MB. Free memory was 109.3 MB in the beginning and 109.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-10 01:45:56,269 INFO L168 Benchmark]: CACSL2BoogieTranslator took 752.68 ms. Allocated memory was 134.7 MB in the beginning and 200.3 MB in the end (delta: 65.5 MB). Free memory was 89.0 MB in the beginning and 145.3 MB in the end (delta: -56.3 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. [2019-09-10 01:45:56,271 INFO L168 Benchmark]: Boogie Preprocessor took 63.81 ms. Allocated memory is still 200.3 MB. Free memory was 145.3 MB in the beginning and 142.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. [2019-09-10 01:45:56,272 INFO L168 Benchmark]: RCFGBuilder took 718.56 ms. Allocated memory is still 200.3 MB. Free memory was 142.2 MB in the beginning and 85.2 MB in the end (delta: 56.9 MB). Peak memory consumption was 56.9 MB. Max. memory is 7.1 GB. [2019-09-10 01:45:56,273 INFO L168 Benchmark]: TraceAbstraction took 908.52 ms. Allocated memory was 200.3 MB in the beginning and 228.6 MB in the end (delta: 28.3 MB). Free memory was 85.2 MB in the beginning and 151.5 MB in the end (delta: -66.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-10 01:45:56,284 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 134.7 MB. Free memory was 109.3 MB in the beginning and 109.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 752.68 ms. Allocated memory was 134.7 MB in the beginning and 200.3 MB in the end (delta: 65.5 MB). Free memory was 89.0 MB in the beginning and 145.3 MB in the end (delta: -56.3 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 63.81 ms. Allocated memory is still 200.3 MB. Free memory was 145.3 MB in the beginning and 142.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 718.56 ms. Allocated memory is still 200.3 MB. Free memory was 142.2 MB in the beginning and 85.2 MB in the end (delta: 56.9 MB). Peak memory consumption was 56.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 908.52 ms. Allocated memory was 200.3 MB in the beginning and 228.6 MB in the end (delta: 28.3 MB). Free memory was 85.2 MB in the beginning and 151.5 MB in the end (delta: -66.3 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1601]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1606] int globalState = 0; VAL [\old(globalState)=7, globalState=0] [L1612] CALL, EXPR l_malloc(sizeof(int)) VAL [\old(globalState)=0, \old(size)=4, globalState=0] [L1619] void *retVal = malloc(size); VAL [\old(globalState)=0, \old(size)=4, globalState=0, malloc(size)={2:0}, retVal={2:0}, size=4] [L1620] COND TRUE retVal != ((void *)0) [L1621] globalState=1 VAL [\old(globalState)=0, \old(size)=4, globalState=1, malloc(size)={2:0}, retVal={2:0}, size=4] [L1622] return retVal; VAL [\old(globalState)=0, \old(size)=4, \result={2:0}, globalState=1, malloc(size)={2:0}, retVal={2:0}, size=4] [L1612] RET, EXPR l_malloc(sizeof(int)) VAL [\old(argc)=10, \old(globalState)=0, argc=10, argv={8:6}, argv={8:6}, globalState=1, l_malloc(sizeof(int))={2:0}] [L1612] int *a = (int*) l_malloc(sizeof(int)); [L1613] CALL l_free(a) VAL [\old(globalState)=1, globalState=1, ptr={2:0}] [L1629] COND TRUE ptr!=((void *)0) VAL [\old(globalState)=1, globalState=1, ptr={2:0}, ptr={2:0}] [L1629] (globalState == 1) ? (0) : __blast_assert () VAL [\old(globalState)=1, globalState=1, ptr={2:0}, ptr={2:0}] [L1630] globalState = 0 [L1613] RET l_free(a) VAL [\old(argc)=10, \old(globalState)=0, a={2:0}, argc=10, argv={8:6}, argv={8:6}, globalState=0] [L1614] CALL l_free(a) VAL [\old(globalState)=0, globalState=0, ptr={2:0}] [L1629] COND TRUE ptr!=((void *)0) VAL [\old(globalState)=0, globalState=0, ptr={2:0}, ptr={2:0}] [L1629] (globalState == 1) ? (0) : __blast_assert () VAL [\old(globalState)=0, globalState=0, ptr={2:0}, ptr={2:0}] [L1629] CALL __blast_assert () VAL [\old(globalState)=0, globalState=0] [L1601] __VERIFIER_error() VAL [\old(globalState)=0, globalState=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 31 locations, 1 error locations. UNSAFE Result, 0.8s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 70 SDtfs, 15 SDslu, 136 SDs, 0 SdLazy, 51 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s 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 AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 89 NumberOfCodeBlocks, 89 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 2190 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...