java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/ldv-regression/rule60_list.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 02:56:06,499 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 02:56:06,502 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 02:56:06,521 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 02:56:06,521 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 02:56:06,523 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 02:56:06,525 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 02:56:06,533 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 02:56:06,538 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 02:56:06,541 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 02:56:06,542 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 02:56:06,543 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 02:56:06,544 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 02:56:06,545 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 02:56:06,548 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 02:56:06,549 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 02:56:06,550 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 02:56:06,551 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 02:56:06,553 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 02:56:06,557 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 02:56:06,561 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 02:56:06,564 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 02:56:06,566 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 02:56:06,567 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 02:56:06,569 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 02:56:06,569 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 02:56:06,569 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 02:56:06,571 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 02:56:06,572 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 02:56:06,573 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 02:56:06,574 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 02:56:06,575 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 02:56:06,575 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 02:56:06,576 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 02:56:06,577 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 02:56:06,577 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 02:56:06,578 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 02:56:06,578 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 02:56:06,579 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 02:56:06,579 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 02:56:06,581 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 02:56:06,581 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 02:56:06,599 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 02:56:06,599 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 02:56:06,601 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 02:56:06,602 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 02:56:06,602 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 02:56:06,602 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 02:56:06,602 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 02:56:06,602 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 02:56:06,603 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 02:56:06,603 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 02:56:06,604 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 02:56:06,604 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 02:56:06,604 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 02:56:06,605 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 02:56:06,605 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 02:56:06,605 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 02:56:06,605 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 02:56:06,605 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 02:56:06,606 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 02:56:06,606 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 02:56:06,606 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 02:56:06,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 02:56:06,606 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 02:56:06,606 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 02:56:06,607 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 02:56:06,607 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 02:56:06,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 02:56:06,607 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 02:56:06,607 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 02:56:06,896 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 02:56:06,915 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 02:56:06,919 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 02:56:06,921 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 02:56:06,921 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 02:56:06,922 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/rule60_list.i [2019-10-15 02:56:06,990 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40d84a37b/58328f5451784795925720990b31dd6f/FLAG1919e0e2d [2019-10-15 02:56:07,482 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 02:56:07,483 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/rule60_list.i [2019-10-15 02:56:07,493 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40d84a37b/58328f5451784795925720990b31dd6f/FLAG1919e0e2d [2019-10-15 02:56:07,843 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40d84a37b/58328f5451784795925720990b31dd6f [2019-10-15 02:56:07,853 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 02:56:07,855 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 02:56:07,856 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 02:56:07,856 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 02:56:07,860 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 02:56:07,861 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:56:07" (1/1) ... [2019-10-15 02:56:07,864 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1950c0f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:07, skipping insertion in model container [2019-10-15 02:56:07,864 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:56:07" (1/1) ... [2019-10-15 02:56:07,872 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 02:56:07,913 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 02:56:08,422 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 02:56:08,444 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 02:56:08,489 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 02:56:08,568 INFO L192 MainTranslator]: Completed translation [2019-10-15 02:56:08,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:08 WrapperNode [2019-10-15 02:56:08,570 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 02:56:08,571 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 02:56:08,571 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 02:56:08,571 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 02:56:08,583 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:08" (1/1) ... [2019-10-15 02:56:08,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:08" (1/1) ... [2019-10-15 02:56:08,597 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:08" (1/1) ... [2019-10-15 02:56:08,597 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:08" (1/1) ... [2019-10-15 02:56:08,618 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:08" (1/1) ... [2019-10-15 02:56:08,620 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:08" (1/1) ... [2019-10-15 02:56:08,631 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:08" (1/1) ... [2019-10-15 02:56:08,640 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 02:56:08,641 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 02:56:08,642 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 02:56:08,642 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 02:56:08,643 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:08" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 02:56:08,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 02:56:08,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 02:56:08,707 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2019-10-15 02:56:08,707 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2019-10-15 02:56:08,707 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2019-10-15 02:56:08,707 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 02:56:08,707 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 02:56:08,707 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2019-10-15 02:56:08,708 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2019-10-15 02:56:08,708 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2019-10-15 02:56:08,708 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2019-10-15 02:56:08,708 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2019-10-15 02:56:08,708 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2019-10-15 02:56:08,708 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2019-10-15 02:56:08,709 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2019-10-15 02:56:08,709 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2019-10-15 02:56:08,709 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2019-10-15 02:56:08,709 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2019-10-15 02:56:08,709 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2019-10-15 02:56:08,709 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2019-10-15 02:56:08,710 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2019-10-15 02:56:08,710 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2019-10-15 02:56:08,710 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2019-10-15 02:56:08,710 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2019-10-15 02:56:08,710 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2019-10-15 02:56:08,710 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2019-10-15 02:56:08,710 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2019-10-15 02:56:08,711 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2019-10-15 02:56:08,711 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2019-10-15 02:56:08,711 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2019-10-15 02:56:08,711 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2019-10-15 02:56:08,711 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2019-10-15 02:56:08,712 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2019-10-15 02:56:08,712 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2019-10-15 02:56:08,712 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2019-10-15 02:56:08,712 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2019-10-15 02:56:08,712 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2019-10-15 02:56:08,712 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2019-10-15 02:56:08,713 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2019-10-15 02:56:08,713 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2019-10-15 02:56:08,713 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2019-10-15 02:56:08,713 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2019-10-15 02:56:08,713 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2019-10-15 02:56:08,713 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2019-10-15 02:56:08,713 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2019-10-15 02:56:08,713 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2019-10-15 02:56:08,714 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 02:56:08,714 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2019-10-15 02:56:08,714 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2019-10-15 02:56:08,714 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2019-10-15 02:56:08,714 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2019-10-15 02:56:08,714 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2019-10-15 02:56:08,714 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2019-10-15 02:56:08,714 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2019-10-15 02:56:08,714 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2019-10-15 02:56:08,714 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2019-10-15 02:56:08,715 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2019-10-15 02:56:08,715 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2019-10-15 02:56:08,715 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2019-10-15 02:56:08,715 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2019-10-15 02:56:08,715 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2019-10-15 02:56:08,715 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2019-10-15 02:56:08,715 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2019-10-15 02:56:08,715 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2019-10-15 02:56:08,716 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2019-10-15 02:56:08,716 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2019-10-15 02:56:08,716 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2019-10-15 02:56:08,716 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2019-10-15 02:56:08,716 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2019-10-15 02:56:08,716 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2019-10-15 02:56:08,716 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2019-10-15 02:56:08,716 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2019-10-15 02:56:08,716 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2019-10-15 02:56:08,717 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2019-10-15 02:56:08,717 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2019-10-15 02:56:08,717 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2019-10-15 02:56:08,717 INFO L130 BoogieDeclarations]: Found specification of procedure gets [2019-10-15 02:56:08,717 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2019-10-15 02:56:08,717 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2019-10-15 02:56:08,718 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2019-10-15 02:56:08,718 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2019-10-15 02:56:08,718 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-15 02:56:08,718 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2019-10-15 02:56:08,718 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2019-10-15 02:56:08,718 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2019-10-15 02:56:08,718 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2019-10-15 02:56:08,719 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2019-10-15 02:56:08,719 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2019-10-15 02:56:08,719 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2019-10-15 02:56:08,719 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2019-10-15 02:56:08,719 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2019-10-15 02:56:08,719 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2019-10-15 02:56:08,720 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2019-10-15 02:56:08,720 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2019-10-15 02:56:08,720 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2019-10-15 02:56:08,720 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2019-10-15 02:56:08,720 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2019-10-15 02:56:08,720 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2019-10-15 02:56:08,720 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2019-10-15 02:56:08,720 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2019-10-15 02:56:08,720 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2019-10-15 02:56:08,721 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2019-10-15 02:56:08,721 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2019-10-15 02:56:08,721 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2019-10-15 02:56:08,721 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2019-10-15 02:56:08,721 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2019-10-15 02:56:08,721 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2019-10-15 02:56:08,721 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2019-10-15 02:56:08,721 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2019-10-15 02:56:08,722 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 02:56:08,722 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-15 02:56:08,722 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-15 02:56:08,722 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 02:56:08,722 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-15 02:56:08,722 INFO L130 BoogieDeclarations]: Found specification of procedure memalign [2019-10-15 02:56:08,722 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-15 02:56:08,722 INFO L130 BoogieDeclarations]: Found specification of procedure pvalloc [2019-10-15 02:56:08,722 INFO L130 BoogieDeclarations]: Found specification of procedure __default_morecore [2019-10-15 02:56:08,723 INFO L130 BoogieDeclarations]: Found specification of procedure mallinfo [2019-10-15 02:56:08,723 INFO L130 BoogieDeclarations]: Found specification of procedure mallopt [2019-10-15 02:56:08,723 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_trim [2019-10-15 02:56:08,723 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_usable_size [2019-10-15 02:56:08,723 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_stats [2019-10-15 02:56:08,723 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_info [2019-10-15 02:56:08,724 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_get_state [2019-10-15 02:56:08,724 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_set_state [2019-10-15 02:56:08,724 INFO L130 BoogieDeclarations]: Found specification of procedure __malloc_check_init [2019-10-15 02:56:08,724 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2019-10-15 02:56:08,724 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 02:56:08,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 02:56:08,724 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2019-10-15 02:56:08,725 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 02:56:08,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 02:56:08,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 02:56:08,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 02:56:08,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-15 02:56:08,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 02:56:08,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 02:56:08,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 02:56:08,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 02:56:08,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 02:56:09,247 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 02:56:09,247 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-15 02:56:09,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:56:09 BoogieIcfgContainer [2019-10-15 02:56:09,248 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 02:56:09,250 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 02:56:09,250 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 02:56:09,253 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 02:56:09,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 02:56:07" (1/3) ... [2019-10-15 02:56:09,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74b526b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:56:09, skipping insertion in model container [2019-10-15 02:56:09,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:08" (2/3) ... [2019-10-15 02:56:09,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74b526b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:56:09, skipping insertion in model container [2019-10-15 02:56:09,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:56:09" (3/3) ... [2019-10-15 02:56:09,256 INFO L109 eAbstractionObserver]: Analyzing ICFG rule60_list.i [2019-10-15 02:56:09,266 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 02:56:09,273 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 02:56:09,282 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 02:56:09,306 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 02:56:09,306 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 02:56:09,306 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 02:56:09,306 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 02:56:09,307 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 02:56:09,307 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 02:56:09,307 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 02:56:09,307 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 02:56:09,325 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-10-15 02:56:09,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-15 02:56:09,330 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:56:09,331 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:56:09,334 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:56:09,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:56:09,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1144476146, now seen corresponding path program 1 times [2019-10-15 02:56:09,348 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:56:09,349 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852785521] [2019-10-15 02:56:09,349 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:56:09,349 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:56:09,350 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:56:09,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:56:09,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:56:09,738 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852785521] [2019-10-15 02:56:09,739 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:56:09,739 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 02:56:09,740 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655813654] [2019-10-15 02:56:09,744 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 02:56:09,745 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:56:09,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 02:56:09,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-10-15 02:56:09,776 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 7 states. [2019-10-15 02:56:09,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:56:09,924 INFO L93 Difference]: Finished difference Result 47 states and 58 transitions. [2019-10-15 02:56:09,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 02:56:09,927 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2019-10-15 02:56:09,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:56:09,937 INFO L225 Difference]: With dead ends: 47 [2019-10-15 02:56:09,937 INFO L226 Difference]: Without dead ends: 23 [2019-10-15 02:56:09,943 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-10-15 02:56:09,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-10-15 02:56:09,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-10-15 02:56:09,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-10-15 02:56:09,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2019-10-15 02:56:09,981 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 11 [2019-10-15 02:56:09,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:56:09,981 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2019-10-15 02:56:09,982 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 02:56:09,982 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2019-10-15 02:56:09,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-15 02:56:09,983 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:56:09,983 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:56:09,983 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:56:09,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:56:09,984 INFO L82 PathProgramCache]: Analyzing trace with hash 784292294, now seen corresponding path program 1 times [2019-10-15 02:56:09,984 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:56:09,984 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314247796] [2019-10-15 02:56:09,984 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:56:09,984 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:56:09,985 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:56:10,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:56:10,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:56:10,174 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314247796] [2019-10-15 02:56:10,174 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:56:10,174 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-15 02:56:10,175 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468410010] [2019-10-15 02:56:10,176 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 02:56:10,177 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:56:10,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 02:56:10,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2019-10-15 02:56:10,177 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 9 states. [2019-10-15 02:56:10,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:56:10,390 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2019-10-15 02:56:10,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 02:56:10,391 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2019-10-15 02:56:10,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:56:10,392 INFO L225 Difference]: With dead ends: 25 [2019-10-15 02:56:10,392 INFO L226 Difference]: Without dead ends: 22 [2019-10-15 02:56:10,393 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2019-10-15 02:56:10,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-10-15 02:56:10,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-10-15 02:56:10,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-10-15 02:56:10,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 21 transitions. [2019-10-15 02:56:10,404 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 21 transitions. Word has length 16 [2019-10-15 02:56:10,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:56:10,405 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 21 transitions. [2019-10-15 02:56:10,405 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 02:56:10,405 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 21 transitions. [2019-10-15 02:56:10,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-15 02:56:10,406 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:56:10,407 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:56:10,407 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:56:10,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:56:10,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1545476716, now seen corresponding path program 1 times [2019-10-15 02:56:10,408 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:56:10,408 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917171310] [2019-10-15 02:56:10,409 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:56:10,409 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:56:10,409 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:56:10,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:56:10,622 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:56:10,622 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917171310] [2019-10-15 02:56:10,623 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:56:10,623 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-15 02:56:10,623 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970692362] [2019-10-15 02:56:10,624 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 02:56:10,624 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:56:10,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 02:56:10,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-10-15 02:56:10,625 INFO L87 Difference]: Start difference. First operand 22 states and 21 transitions. Second operand 9 states. [2019-10-15 02:56:10,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:56:10,762 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2019-10-15 02:56:10,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 02:56:10,762 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2019-10-15 02:56:10,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:56:10,763 INFO L225 Difference]: With dead ends: 22 [2019-10-15 02:56:10,763 INFO L226 Difference]: Without dead ends: 0 [2019-10-15 02:56:10,764 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2019-10-15 02:56:10,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-15 02:56:10,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-15 02:56:10,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-15 02:56:10,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-15 02:56:10,765 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2019-10-15 02:56:10,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:56:10,765 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-15 02:56:10,766 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 02:56:10,766 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-15 02:56:10,766 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-15 02:56:10,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-15 02:56:11,005 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-15 02:56:11,006 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-15 02:56:11,006 INFO L443 ceAbstractionStarter]: For program point list_delEXIT(lines 871 874) no Hoare annotation was computed. [2019-10-15 02:56:11,006 INFO L443 ceAbstractionStarter]: For program point L872(line 872) no Hoare annotation was computed. [2019-10-15 02:56:11,006 INFO L439 ceAbstractionStarter]: At program point list_delENTRY(lines 871 874) the Hoare annotation is: (or (= (select (select |#memory_int| |list_del_#in~entry.base|) 8) 1) (not (<= |~#head~0.offset| 0)) (not (= |list_del_#in~entry.offset| 0)) (not (= 1 (select (select |old(#memory_int)| |list_del_#in~entry.base|) 8))) (not (<= 0 |~#head~0.offset|))) [2019-10-15 02:56:11,007 INFO L439 ceAbstractionStarter]: At program point L872-2(line 872) the Hoare annotation is: (or (not (<= |~#head~0.offset| 0)) (not (= |list_del_#in~entry.offset| 0)) (not (= 1 (select (select |old(#memory_int)| |list_del_#in~entry.base|) 8))) (not (<= 0 |~#head~0.offset|))) [2019-10-15 02:56:11,007 INFO L443 ceAbstractionStarter]: For program point L872-3(line 872) no Hoare annotation was computed. [2019-10-15 02:56:11,008 INFO L439 ceAbstractionStarter]: At program point L867-2(line 867) the Hoare annotation is: (or (not (<= |~#head~0.offset| 0)) (not (= (select (select |old(#memory_int)| |list_add_#in~new.base|) 8) 0)) (not (= 0 |list_add_#in~new.offset|)) (not (<= 0 |~#head~0.offset|))) [2019-10-15 02:56:11,009 INFO L439 ceAbstractionStarter]: At program point list_addENTRY(lines 866 869) the Hoare annotation is: (or (not (<= |~#head~0.offset| 0)) (not (= (select (select |old(#memory_int)| |list_add_#in~new.base|) 8) 0)) (not (= 0 |list_add_#in~new.offset|)) (not (<= 0 |~#head~0.offset|)) (= 0 (select (select |#memory_int| |list_add_#in~new.base|) 8))) [2019-10-15 02:56:11,009 INFO L443 ceAbstractionStarter]: For program point L867-3(line 867) no Hoare annotation was computed. [2019-10-15 02:56:11,009 INFO L443 ceAbstractionStarter]: For program point list_addEXIT(lines 866 869) no Hoare annotation was computed. [2019-10-15 02:56:11,009 INFO L443 ceAbstractionStarter]: For program point L867(line 867) no Hoare annotation was computed. [2019-10-15 02:56:11,009 INFO L443 ceAbstractionStarter]: For program point __blast_assertEXIT(lines 4 7) no Hoare annotation was computed. [2019-10-15 02:56:11,010 INFO L443 ceAbstractionStarter]: For program point __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2019-10-15 02:56:11,010 INFO L446 ceAbstractionStarter]: At program point __blast_assertENTRY(lines 4 7) the Hoare annotation is: true [2019-10-15 02:56:11,010 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-15 02:56:11,010 INFO L439 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (and (<= |~#head~0.offset| 0) (<= 0 |~#head~0.offset|)) [2019-10-15 02:56:11,011 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-15 02:56:11,011 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-15 02:56:11,011 INFO L443 ceAbstractionStarter]: For program point L881(lines 881 886) no Hoare annotation was computed. [2019-10-15 02:56:11,011 INFO L443 ceAbstractionStarter]: For program point L881-1(lines 881 886) no Hoare annotation was computed. [2019-10-15 02:56:11,011 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 878 888) the Hoare annotation is: true [2019-10-15 02:56:11,012 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 878 888) no Hoare annotation was computed. [2019-10-15 02:56:11,012 INFO L439 ceAbstractionStarter]: At program point L884(line 884) the Hoare annotation is: (or (not (<= |~#head~0.offset| 0)) (not (<= 0 |~#head~0.offset|)) (and (= main_~dev~0.offset 0) (= 0 (select (select |#memory_int| main_~dev~0.base) (+ |~#head~0.offset| 8))))) [2019-10-15 02:56:11,012 INFO L439 ceAbstractionStarter]: At program point L883(line 883) the Hoare annotation is: (or (not (<= |~#head~0.offset| 0)) (and (= main_~dev~0.offset 0) (= 0 (select (select |#memory_int| main_~dev~0.base) (+ |~#head~0.offset| 8)))) (not (<= 0 |~#head~0.offset|))) [2019-10-15 02:56:11,012 INFO L439 ceAbstractionStarter]: At program point L883-1(line 883) the Hoare annotation is: (or (not (<= |~#head~0.offset| 0)) (not (<= 0 |~#head~0.offset|)) (and (= main_~dev~0.offset 0) (= 1 (select (select |#memory_int| main_~dev~0.base) 8)))) [2019-10-15 02:56:11,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 02:56:11 BoogieIcfgContainer [2019-10-15 02:56:11,017 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-15 02:56:11,033 INFO L168 Benchmark]: Toolchain (without parser) took 3164.01 ms. Allocated memory was 145.2 MB in the beginning and 234.4 MB in the end (delta: 89.1 MB). Free memory was 100.3 MB in the beginning and 78.9 MB in the end (delta: 21.5 MB). Peak memory consumption was 110.6 MB. Max. memory is 7.1 GB. [2019-10-15 02:56:11,034 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 145.2 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-15 02:56:11,035 INFO L168 Benchmark]: CACSL2BoogieTranslator took 714.36 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 100.1 MB in the beginning and 166.8 MB in the end (delta: -66.7 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2019-10-15 02:56:11,036 INFO L168 Benchmark]: Boogie Preprocessor took 70.02 ms. Allocated memory is still 202.4 MB. Free memory was 166.8 MB in the beginning and 164.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2019-10-15 02:56:11,037 INFO L168 Benchmark]: RCFGBuilder took 607.69 ms. Allocated memory is still 202.4 MB. Free memory was 163.5 MB in the beginning and 119.0 MB in the end (delta: 44.4 MB). Peak memory consumption was 44.4 MB. Max. memory is 7.1 GB. [2019-10-15 02:56:11,038 INFO L168 Benchmark]: TraceAbstraction took 1767.33 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 118.4 MB in the beginning and 78.9 MB in the end (delta: 39.5 MB). Peak memory consumption was 71.5 MB. Max. memory is 7.1 GB. [2019-10-15 02:56:11,042 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 145.2 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 714.36 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 100.1 MB in the beginning and 166.8 MB in the end (delta: -66.7 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 70.02 ms. Allocated memory is still 202.4 MB. Free memory was 166.8 MB in the beginning and 164.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 607.69 ms. Allocated memory is still 202.4 MB. Free memory was 163.5 MB in the beginning and 119.0 MB in the end (delta: 44.4 MB). Peak memory consumption was 44.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1767.33 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 118.4 MB in the beginning and 78.9 MB in the end (delta: 39.5 MB). Peak memory consumption was 71.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 26 locations, 1 error locations. Result: SAFE, OverallTime: 1.7s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, HoareTripleCheckerStatistics: 42 SDtfs, 47 SDslu, 128 SDs, 0 SdLazy, 152 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 21 PreInvPairs, 23 NumberOfFragments, 173 HoareAnnotationTreeSize, 21 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 71 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 45 ConstructedInterpolants, 0 QuantifiedInterpolants, 4750 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...