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/list-simple/sll2n_append_unequal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:00:15,463 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:00:15,466 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:00:15,484 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:00:15,484 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:00:15,486 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:00:15,488 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:00:15,497 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:00:15,502 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:00:15,504 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:00:15,506 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:00:15,507 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:00:15,507 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:00:15,509 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:00:15,511 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:00:15,512 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:00:15,513 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:00:15,514 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:00:15,515 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:00:15,517 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:00:15,519 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:00:15,519 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:00:15,520 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:00:15,521 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:00:15,525 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:00:15,525 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:00:15,525 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:00:15,526 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:00:15,527 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:00:15,527 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:00:15,528 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:00:15,528 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:00:15,529 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:00:15,530 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:00:15,531 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:00:15,531 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:00:15,531 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:00:15,532 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:00:15,532 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:00:15,533 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:00:15,533 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:00:15,534 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 03:00:15,548 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:00:15,548 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:00:15,549 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:00:15,549 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:00:15,549 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:00:15,550 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:00:15,550 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:00:15,550 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:00:15,550 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:00:15,550 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:00:15,550 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:00:15,551 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:00:15,551 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:00:15,551 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:00:15,551 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:00:15,551 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:00:15,552 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:00:15,552 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:00:15,552 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:00:15,552 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:00:15,552 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:00:15,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:00:15,553 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:00:15,553 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:00:15,553 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:00:15,554 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:00:15,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:00:15,554 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:00:15,554 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 03:00:15,831 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:00:15,854 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:00:15,857 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:00:15,859 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:00:15,859 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:00:15,860 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2n_append_unequal.i [2019-10-15 03:00:15,930 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/396a5b53e/fd53ab5163ad436885d437c8b864fea6/FLAGeb78547cd [2019-10-15 03:00:16,430 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:00:16,431 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/sll2n_append_unequal.i [2019-10-15 03:00:16,449 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/396a5b53e/fd53ab5163ad436885d437c8b864fea6/FLAGeb78547cd [2019-10-15 03:00:16,801 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/396a5b53e/fd53ab5163ad436885d437c8b864fea6 [2019-10-15 03:00:16,811 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:00:16,812 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:00:16,813 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:00:16,814 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:00:16,817 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:00:16,817 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:00:16" (1/1) ... [2019-10-15 03:00:16,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47135583 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:16, skipping insertion in model container [2019-10-15 03:00:16,820 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:00:16" (1/1) ... [2019-10-15 03:00:16,827 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:00:16,863 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:00:17,271 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:00:17,281 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:00:17,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:00:17,419 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:00:17,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:17 WrapperNode [2019-10-15 03:00:17,420 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:00:17,421 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:00:17,421 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:00:17,421 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:00:17,434 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:17" (1/1) ... [2019-10-15 03:00:17,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:17" (1/1) ... [2019-10-15 03:00:17,451 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:17" (1/1) ... [2019-10-15 03:00:17,451 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:17" (1/1) ... [2019-10-15 03:00:17,468 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:17" (1/1) ... [2019-10-15 03:00:17,474 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:17" (1/1) ... [2019-10-15 03:00:17,478 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:17" (1/1) ... [2019-10-15 03:00:17,486 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:00:17,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:00:17,490 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:00:17,491 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:00:17,492 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:17" (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 03:00:17,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:00:17,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:00:17,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-15 03:00:17,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-15 03:00:17,546 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-10-15 03:00:17,546 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-10-15 03:00:17,546 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2019-10-15 03:00:17,547 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2019-10-15 03:00:17,547 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_append [2019-10-15 03:00:17,547 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:00:17,547 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:00:17,547 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-15 03:00:17,547 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-15 03:00:17,548 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-15 03:00:17,548 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-15 03:00:17,548 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-15 03:00:17,548 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-15 03:00:17,548 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-15 03:00:17,549 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-15 03:00:17,549 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-15 03:00:17,549 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-15 03:00:17,549 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-15 03:00:17,549 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-15 03:00:17,549 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-15 03:00:17,549 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-15 03:00:17,550 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-15 03:00:17,550 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-15 03:00:17,550 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-15 03:00:17,550 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-15 03:00:17,550 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-15 03:00:17,551 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-15 03:00:17,551 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-15 03:00:17,551 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-15 03:00:17,551 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-15 03:00:17,551 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-15 03:00:17,551 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-15 03:00:17,551 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-15 03:00:17,552 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-15 03:00:17,552 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-15 03:00:17,552 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-15 03:00:17,552 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-15 03:00:17,552 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-15 03:00:17,552 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-15 03:00:17,553 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-15 03:00:17,553 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-15 03:00:17,553 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-15 03:00:17,553 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-15 03:00:17,553 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-15 03:00:17,553 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-15 03:00:17,554 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-15 03:00:17,554 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-15 03:00:17,554 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-15 03:00:17,554 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-15 03:00:17,554 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-15 03:00:17,554 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-15 03:00:17,554 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-15 03:00:17,555 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-15 03:00:17,555 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-15 03:00:17,555 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-15 03:00:17,555 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-15 03:00:17,555 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-15 03:00:17,555 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-15 03:00:17,556 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-15 03:00:17,556 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:00:17,556 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-15 03:00:17,556 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-15 03:00:17,556 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:00:17,556 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-15 03:00:17,557 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-15 03:00:17,557 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-15 03:00:17,557 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-15 03:00:17,557 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-15 03:00:17,557 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-15 03:00:17,557 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-15 03:00:17,558 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-15 03:00:17,558 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-15 03:00:17,558 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:00:17,558 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-15 03:00:17,558 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-15 03:00:17,558 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-15 03:00:17,559 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-15 03:00:17,559 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-15 03:00:17,559 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-15 03:00:17,559 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-15 03:00:17,559 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-15 03:00:17,559 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-15 03:00:17,559 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-15 03:00:17,560 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-15 03:00:17,560 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-15 03:00:17,560 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-15 03:00:17,560 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-15 03:00:17,560 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-15 03:00:17,560 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-15 03:00:17,560 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-15 03:00:17,561 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-15 03:00:17,561 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-15 03:00:17,561 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-15 03:00:17,561 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-15 03:00:17,561 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-15 03:00:17,561 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-15 03:00:17,562 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-15 03:00:17,562 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-15 03:00:17,562 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-15 03:00:17,562 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-15 03:00:17,562 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-15 03:00:17,562 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-15 03:00:17,562 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-15 03:00:17,563 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-15 03:00:17,563 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-15 03:00:17,563 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-15 03:00:17,563 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-15 03:00:17,563 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-15 03:00:17,563 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-15 03:00:17,563 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-15 03:00:17,563 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-15 03:00:17,564 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-15 03:00:17,564 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-10-15 03:00:17,564 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-10-15 03:00:17,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:00:17,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:00:17,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:00:17,565 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2019-10-15 03:00:17,565 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2019-10-15 03:00:17,565 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:00:17,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:00:17,565 INFO L130 BoogieDeclarations]: Found specification of procedure sll_append [2019-10-15 03:00:17,565 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:00:17,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:00:17,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-15 03:00:17,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:00:17,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:00:17,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:00:17,974 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-10-15 03:00:18,213 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:00:18,213 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 03:00:18,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:00:18 BoogieIcfgContainer [2019-10-15 03:00:18,215 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:00:18,216 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:00:18,216 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:00:18,219 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:00:18,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:00:16" (1/3) ... [2019-10-15 03:00:18,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@340cf58f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:00:18, skipping insertion in model container [2019-10-15 03:00:18,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:17" (2/3) ... [2019-10-15 03:00:18,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@340cf58f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:00:18, skipping insertion in model container [2019-10-15 03:00:18,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:00:18" (3/3) ... [2019-10-15 03:00:18,223 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2n_append_unequal.i [2019-10-15 03:00:18,231 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:00:18,240 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:00:18,251 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:00:18,277 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:00:18,277 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:00:18,277 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:00:18,277 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:00:18,278 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:00:18,278 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:00:18,278 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:00:18,278 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:00:18,294 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2019-10-15 03:00:18,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-15 03:00:18,301 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:00:18,302 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:00:18,304 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:00:18,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:00:18,310 INFO L82 PathProgramCache]: Analyzing trace with hash 2115306708, now seen corresponding path program 1 times [2019-10-15 03:00:18,320 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:00:18,320 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740166150] [2019-10-15 03:00:18,321 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:00:18,321 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:00:18,321 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:00:18,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:00:18,569 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 03:00:18,574 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740166150] [2019-10-15 03:00:18,575 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:00:18,575 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:00:18,576 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475131062] [2019-10-15 03:00:18,581 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:00:18,582 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:00:18,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:00:18,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:00:18,599 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 5 states. [2019-10-15 03:00:18,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:00:18,713 INFO L93 Difference]: Finished difference Result 89 states and 114 transitions. [2019-10-15 03:00:18,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:00:18,715 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2019-10-15 03:00:18,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:00:18,724 INFO L225 Difference]: With dead ends: 89 [2019-10-15 03:00:18,724 INFO L226 Difference]: Without dead ends: 39 [2019-10-15 03:00:18,728 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-15 03:00:18,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-10-15 03:00:18,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2019-10-15 03:00:18,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-10-15 03:00:18,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2019-10-15 03:00:18,782 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 25 [2019-10-15 03:00:18,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:00:18,783 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2019-10-15 03:00:18,783 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:00:18,783 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2019-10-15 03:00:18,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-15 03:00:18,786 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:00:18,787 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:00:18,787 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:00:18,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:00:18,789 INFO L82 PathProgramCache]: Analyzing trace with hash -263779731, now seen corresponding path program 1 times [2019-10-15 03:00:18,789 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:00:18,789 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65898799] [2019-10-15 03:00:18,790 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:00:18,790 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:00:18,790 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:00:18,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:00:18,949 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 03:00:18,949 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65898799] [2019-10-15 03:00:18,949 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261312677] [2019-10-15 03:00:18,950 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:00:19,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:00:19,097 INFO L256 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-15 03:00:19,105 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:00:19,135 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:00:19,135 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:00:19,250 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 03:00:19,250 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1096611453] [2019-10-15 03:00:19,279 INFO L162 IcfgInterpreter]: Started Sifa with 28 locations of interest [2019-10-15 03:00:19,280 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:00:19,287 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:00:19,299 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:00:19,299 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:00:19,426 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-15 03:00:19,602 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 03:00:21,514 INFO L199 IcfgInterpreter]: Interpreting procedure sll_create with input of size 44 for LOIs [2019-10-15 03:00:22,242 INFO L199 IcfgInterpreter]: Interpreting procedure sll_append with input of size 39 for LOIs [2019-10-15 03:00:22,604 INFO L199 IcfgInterpreter]: Interpreting procedure node_create with input of size 40 for LOIs [2019-10-15 03:00:22,654 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-15 03:00:22,657 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-15 03:00:22,799 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2019-10-15 03:00:25,728 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 42 [2019-10-15 03:00:25,956 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 56 [2019-10-15 03:00:26,262 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 64 [2019-10-15 03:00:26,519 WARN L191 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 60 [2019-10-15 03:00:26,902 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2019-10-15 03:00:26,928 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-15 03:00:26,928 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 23] total 30 [2019-10-15 03:00:26,928 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011552850] [2019-10-15 03:00:26,931 INFO L442 AbstractCegarLoop]: Interpolant automaton has 30 states [2019-10-15 03:00:26,931 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:00:26,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2019-10-15 03:00:26,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=781, Unknown=1, NotChecked=0, Total=870 [2019-10-15 03:00:26,932 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand 30 states. [2019-10-15 03:00:34,420 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2019-10-15 03:00:34,729 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2019-10-15 03:00:34,936 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2019-10-15 03:00:35,206 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2019-10-15 03:00:35,396 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2019-10-15 03:00:35,733 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2019-10-15 03:00:35,928 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2019-10-15 03:00:35,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:00:35,998 INFO L93 Difference]: Finished difference Result 86 states and 102 transitions. [2019-10-15 03:00:35,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-10-15 03:00:35,999 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 32 [2019-10-15 03:00:35,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:00:36,002 INFO L225 Difference]: With dead ends: 86 [2019-10-15 03:00:36,002 INFO L226 Difference]: Without dead ends: 60 [2019-10-15 03:00:36,005 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 68 SyntacticMatches, 7 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 844 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=286, Invalid=2791, Unknown=3, NotChecked=0, Total=3080 [2019-10-15 03:00:36,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2019-10-15 03:00:36,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 40. [2019-10-15 03:00:36,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-10-15 03:00:36,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2019-10-15 03:00:36,014 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 32 [2019-10-15 03:00:36,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:00:36,014 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2019-10-15 03:00:36,015 INFO L463 AbstractCegarLoop]: Interpolant automaton has 30 states. [2019-10-15 03:00:36,015 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2019-10-15 03:00:36,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-15 03:00:36,016 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:00:36,016 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:00:36,220 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:00:36,221 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:00:36,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:00:36,222 INFO L82 PathProgramCache]: Analyzing trace with hash 2101950132, now seen corresponding path program 2 times [2019-10-15 03:00:36,222 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:00:36,223 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911721243] [2019-10-15 03:00:36,223 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:00:36,223 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:00:36,223 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:00:36,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:00:36,619 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 03:00:36,620 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911721243] [2019-10-15 03:00:36,620 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859742012] [2019-10-15 03:00:36,620 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:00:36,759 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-15 03:00:36,759 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 03:00:36,761 INFO L256 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 41 conjunts are in the unsatisfiable core [2019-10-15 03:00:36,765 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:00:38,936 WARN L860 $PredicateComparison]: unable to prove that (exists ((node_create_~temp~0.offset Int) (node_create_~temp~0.base Int)) (and (<= (+ |c_#StackHeapBarrier| 1) node_create_~temp~0.base) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| node_create_~temp~0.base (store (store (select |c_old(#memory_$Pointer$.base)| node_create_~temp~0.base) (+ node_create_~temp~0.offset 4) 0) node_create_~temp~0.offset (select (select |c_#memory_$Pointer$.base| node_create_~temp~0.base) node_create_~temp~0.offset)))))) is different from true