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/forester-heap/sll-simple-white-blue-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:59:31,064 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:59:31,067 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:59:31,086 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:59:31,086 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:59:31,088 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:59:31,090 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:59:31,100 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:59:31,105 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:59:31,107 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:59:31,109 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:59:31,110 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:59:31,110 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:59:31,112 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:59:31,115 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:59:31,116 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:59:31,117 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:59:31,118 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:59:31,120 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:59:31,125 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:59:31,129 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:59:31,131 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:59:31,134 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:59:31,135 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:59:31,137 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:59:31,137 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:59:31,137 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:59:31,139 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:59:31,140 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:59:31,141 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:59:31,141 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:59:31,143 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:59:31,144 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:59:31,145 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:59:31,146 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:59:31,146 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:59:31,147 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:59:31,147 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:59:31,148 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:59:31,148 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:59:31,150 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:59:31,151 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 01:59:31,178 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:59:31,178 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:59:31,181 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:59:31,182 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:59:31,182 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:59:31,182 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:59:31,182 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:59:31,183 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:59:31,183 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:59:31,183 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:59:31,183 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:59:31,183 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:59:31,184 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:59:31,184 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:59:31,184 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:59:31,184 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:59:31,184 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:59:31,184 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:59:31,185 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:59:31,185 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:59:31,185 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:59:31,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:59:31,186 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:59:31,186 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:59:31,186 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:59:31,186 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:59:31,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:59:31,187 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:59:31,187 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 01:59:31,492 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:59:31,514 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:59:31,517 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:59:31,519 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:59:31,519 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:59:31,520 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-simple-white-blue-1.i [2019-10-15 01:59:31,594 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cba819df5/609a58e3ec5247239ae70eaa5a20de28/FLAG0820bf5c3 [2019-10-15 01:59:32,100 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:59:32,101 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-simple-white-blue-1.i [2019-10-15 01:59:32,114 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cba819df5/609a58e3ec5247239ae70eaa5a20de28/FLAG0820bf5c3 [2019-10-15 01:59:32,423 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cba819df5/609a58e3ec5247239ae70eaa5a20de28 [2019-10-15 01:59:32,433 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:59:32,435 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:59:32,435 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:59:32,436 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:59:32,439 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:59:32,440 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:59:32" (1/1) ... [2019-10-15 01:59:32,443 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b5f41b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:32, skipping insertion in model container [2019-10-15 01:59:32,443 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:59:32" (1/1) ... [2019-10-15 01:59:32,449 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:59:32,509 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:59:32,961 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:59:32,977 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:59:33,017 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:59:33,070 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:59:33,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:33 WrapperNode [2019-10-15 01:59:33,071 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:59:33,071 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:59:33,072 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:59:33,072 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:59:33,086 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:33" (1/1) ... [2019-10-15 01:59:33,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:33" (1/1) ... [2019-10-15 01:59:33,105 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:33" (1/1) ... [2019-10-15 01:59:33,105 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:33" (1/1) ... [2019-10-15 01:59:33,124 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:33" (1/1) ... [2019-10-15 01:59:33,130 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:33" (1/1) ... [2019-10-15 01:59:33,133 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:33" (1/1) ... [2019-10-15 01:59:33,141 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:59:33,141 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:59:33,142 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:59:33,142 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:59:33,145 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:33" (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 01:59:33,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:59:33,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:59:33,206 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:59:33,206 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-15 01:59:33,206 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-15 01:59:33,206 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-15 01:59:33,206 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-15 01:59:33,207 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-15 01:59:33,207 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-15 01:59:33,207 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-15 01:59:33,207 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-15 01:59:33,207 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-15 01:59:33,208 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-15 01:59:33,208 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-15 01:59:33,208 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-15 01:59:33,208 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-15 01:59:33,208 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-15 01:59:33,208 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-15 01:59:33,209 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-15 01:59:33,209 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-15 01:59:33,209 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-15 01:59:33,209 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-15 01:59:33,209 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-15 01:59:33,209 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-15 01:59:33,210 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-15 01:59:33,210 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-15 01:59:33,210 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-15 01:59:33,210 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-15 01:59:33,210 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-15 01:59:33,211 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-15 01:59:33,211 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-15 01:59:33,211 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-15 01:59:33,211 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-15 01:59:33,211 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-15 01:59:33,211 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-15 01:59:33,212 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-15 01:59:33,212 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-15 01:59:33,212 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-15 01:59:33,212 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-15 01:59:33,212 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-15 01:59:33,212 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-15 01:59:33,212 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-15 01:59:33,213 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-15 01:59:33,213 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-15 01:59:33,213 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-15 01:59:33,213 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-15 01:59:33,213 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-15 01:59:33,213 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-15 01:59:33,214 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-15 01:59:33,214 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-15 01:59:33,214 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-15 01:59:33,214 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-15 01:59:33,214 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-15 01:59:33,214 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:59:33,215 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-15 01:59:33,215 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-15 01:59:33,215 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:59:33,215 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-15 01:59:33,215 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-15 01:59:33,215 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-15 01:59:33,216 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-15 01:59:33,216 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-15 01:59:33,216 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-15 01:59:33,216 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-15 01:59:33,216 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-15 01:59:33,216 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-15 01:59:33,216 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:59:33,217 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-15 01:59:33,217 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-15 01:59:33,217 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-15 01:59:33,217 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-15 01:59:33,217 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-15 01:59:33,217 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-15 01:59:33,218 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-15 01:59:33,218 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-15 01:59:33,218 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-15 01:59:33,218 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-15 01:59:33,218 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-15 01:59:33,218 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-15 01:59:33,219 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-15 01:59:33,219 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-15 01:59:33,219 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-15 01:59:33,219 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-15 01:59:33,219 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-15 01:59:33,219 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-15 01:59:33,220 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-15 01:59:33,220 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-15 01:59:33,220 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-15 01:59:33,220 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-15 01:59:33,220 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-15 01:59:33,220 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-15 01:59:33,221 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-15 01:59:33,221 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-15 01:59:33,221 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-15 01:59:33,221 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-15 01:59:33,221 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-15 01:59:33,221 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-15 01:59:33,221 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-15 01:59:33,222 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-15 01:59:33,222 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-15 01:59:33,222 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-15 01:59:33,222 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-15 01:59:33,222 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-15 01:59:33,222 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-15 01:59:33,222 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-15 01:59:33,223 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-15 01:59:33,223 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:59:33,223 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:59:33,223 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:59:33,223 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:59:33,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:59:33,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:59:33,224 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:59:33,224 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:59:33,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:59:33,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:59:33,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:59:33,768 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:59:33,769 INFO L284 CfgBuilder]: Removed 8 assume(true) statements. [2019-10-15 01:59:33,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:59:33 BoogieIcfgContainer [2019-10-15 01:59:33,770 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:59:33,771 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:59:33,772 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:59:33,775 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:59:33,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:59:32" (1/3) ... [2019-10-15 01:59:33,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@225ba876 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:59:33, skipping insertion in model container [2019-10-15 01:59:33,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:33" (2/3) ... [2019-10-15 01:59:33,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@225ba876 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:59:33, skipping insertion in model container [2019-10-15 01:59:33,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:59:33" (3/3) ... [2019-10-15 01:59:33,778 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-simple-white-blue-1.i [2019-10-15 01:59:33,788 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:59:33,796 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:59:33,808 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:59:33,833 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:59:33,833 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:59:33,833 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:59:33,834 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:59:33,835 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:59:33,836 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:59:33,836 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:59:33,837 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:59:33,858 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2019-10-15 01:59:33,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-15 01:59:33,867 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:59:33,877 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:59:33,879 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:59:33,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:59:33,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1053170576, now seen corresponding path program 1 times [2019-10-15 01:59:33,896 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:59:33,896 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993207139] [2019-10-15 01:59:33,897 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:59:33,897 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:59:33,897 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:59:33,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:59:34,044 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 01:59:34,045 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993207139] [2019-10-15 01:59:34,045 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:59:34,046 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:59:34,046 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478063998] [2019-10-15 01:59:34,051 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:59:34,052 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:59:34,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:59:34,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:59:34,070 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2019-10-15 01:59:34,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:59:34,092 INFO L93 Difference]: Finished difference Result 46 states and 67 transitions. [2019-10-15 01:59:34,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:59:34,093 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2019-10-15 01:59:34,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:59:34,101 INFO L225 Difference]: With dead ends: 46 [2019-10-15 01:59:34,101 INFO L226 Difference]: Without dead ends: 22 [2019-10-15 01:59:34,104 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:59:34,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-10-15 01:59:34,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-10-15 01:59:34,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-10-15 01:59:34,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2019-10-15 01:59:34,136 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 14 [2019-10-15 01:59:34,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:59:34,137 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2019-10-15 01:59:34,137 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:59:34,137 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2019-10-15 01:59:34,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-15 01:59:34,138 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:59:34,138 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:59:34,138 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:59:34,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:59:34,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1017922970, now seen corresponding path program 1 times [2019-10-15 01:59:34,139 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:59:34,139 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565562908] [2019-10-15 01:59:34,139 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:59:34,140 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:59:34,140 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:59:34,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:59:34,569 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 01:59:34,572 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565562908] [2019-10-15 01:59:34,572 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:59:34,573 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:59:34,573 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299727775] [2019-10-15 01:59:34,574 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:59:34,575 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:59:34,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:59:34,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:59:34,576 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand 7 states. [2019-10-15 01:59:34,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:59:34,856 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2019-10-15 01:59:34,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 01:59:34,857 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2019-10-15 01:59:34,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:59:34,860 INFO L225 Difference]: With dead ends: 46 [2019-10-15 01:59:34,860 INFO L226 Difference]: Without dead ends: 44 [2019-10-15 01:59:34,862 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:59:34,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-10-15 01:59:34,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 28. [2019-10-15 01:59:34,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-10-15 01:59:34,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2019-10-15 01:59:34,880 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 16 [2019-10-15 01:59:34,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:59:34,881 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2019-10-15 01:59:34,881 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:59:34,881 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2019-10-15 01:59:34,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-15 01:59:34,883 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:59:34,883 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:59:34,883 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:59:34,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:59:34,884 INFO L82 PathProgramCache]: Analyzing trace with hash 474558911, now seen corresponding path program 1 times [2019-10-15 01:59:34,884 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:59:34,884 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397493997] [2019-10-15 01:59:34,885 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:59:34,885 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:59:34,885 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:59:34,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:59:35,064 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:59:35,065 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397493997] [2019-10-15 01:59:35,065 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032232410] [2019-10-15 01:59:35,065 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 01:59:35,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:59:35,181 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 30 conjunts are in the unsatisfiable core [2019-10-15 01:59:35,189 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:59:35,256 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-10-15 01:59:35,256 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:35,272 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:35,281 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:59:35,284 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2019-10-15 01:59:35,284 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:35,297 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:35,304 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:59:35,305 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2019-10-15 01:59:35,305 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:35,314 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:35,315 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-15 01:59:35,315 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:51, output treesize:20 [2019-10-15 01:59:35,349 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:35,350 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2019-10-15 01:59:35,351 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:35,380 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:35,391 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-15 01:59:35,414 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:35,432 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:59:35,437 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 27 [2019-10-15 01:59:35,438 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:35,463 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:35,468 INFO L496 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-15 01:59:35,488 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:35,495 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:59:35,497 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 27 [2019-10-15 01:59:35,498 INFO L496 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:35,515 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:35,516 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 4 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-15 01:59:35,517 INFO L221 ElimStorePlain]: Needed 6 recursive calls to eliminate 7 variables, input treesize:85, output treesize:39 [2019-10-15 01:59:35,629 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:35,629 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 52 [2019-10-15 01:59:35,631 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:59:35,642 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:59:35,644 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-15 01:59:35,668 INFO L567 ElimStorePlain]: treesize reduction 16, result has 65.2 percent of original size [2019-10-15 01:59:35,673 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 10 [2019-10-15 01:59:35,674 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:35,686 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:35,687 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-15 01:59:35,687 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:69, output treesize:7 [2019-10-15 01:59:35,694 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:59:35,695 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:59:35,710 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:59:35,727 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-15 01:59:35,732 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:35,791 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:35,797 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:35,802 INFO L496 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-15 01:59:35,849 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:35,850 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 6 dim-0 vars, and 2 xjuncts. [2019-10-15 01:59:35,850 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:125, output treesize:55 [2019-10-15 01:59:36,249 WARN L191 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2019-10-15 01:59:36,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:59:36,298 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [650530910] [2019-10-15 01:59:36,322 INFO L162 IcfgInterpreter]: Started Sifa with 17 locations of interest [2019-10-15 01:59:36,322 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 01:59:36,328 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 01:59:36,347 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 01:59:36,347 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 01:59:36,442 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-15 01:59:36,635 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-15 01:59:36,646 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-15 01:59:54,023 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 107 [2019-10-15 01:59:54,029 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-10-15 01:59:54,029 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [7, 7, 7] total 24 [2019-10-15 01:59:54,029 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439443584] [2019-10-15 01:59:54,030 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-15 01:59:54,031 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:59:54,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-15 01:59:54,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=446, Unknown=8, NotChecked=0, Total=552 [2019-10-15 01:59:54,032 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 15 states. [2019-10-15 02:00:12,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:00:12,849 INFO L93 Difference]: Finished difference Result 50 states and 62 transitions. [2019-10-15 02:00:12,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-15 02:00:12,850 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 18 [2019-10-15 02:00:12,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:00:12,851 INFO L225 Difference]: With dead ends: 50 [2019-10-15 02:00:12,851 INFO L226 Difference]: Without dead ends: 42 [2019-10-15 02:00:12,852 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 17.9s TimeCoverageRelationStatistics Valid=104, Invalid=488, Unknown=8, NotChecked=0, Total=600 [2019-10-15 02:00:12,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-10-15 02:00:12,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 35. [2019-10-15 02:00:12,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-10-15 02:00:12,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2019-10-15 02:00:12,860 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 18 [2019-10-15 02:00:12,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:00:12,860 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2019-10-15 02:00:12,860 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-15 02:00:12,861 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2019-10-15 02:00:12,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-15 02:00:12,861 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:00:12,862 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:00:13,062 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:00:13,063 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:00:13,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:00:13,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1802819375, now seen corresponding path program 1 times [2019-10-15 02:00:13,064 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:00:13,064 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893744195] [2019-10-15 02:00:13,064 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:00:13,065 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:00:13,065 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:00:13,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:00:13,196 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:00:13,197 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893744195] [2019-10-15 02:00:13,197 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135424624] [2019-10-15 02:00:13,197 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 02:00:13,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:00:13,296 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 34 conjunts are in the unsatisfiable core [2019-10-15 02:00:13,298 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 02:00:13,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:00:13,710 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 02:00:13,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:00:13,827 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1049940578] [2019-10-15 02:00:13,828 INFO L162 IcfgInterpreter]: Started Sifa with 18 locations of interest [2019-10-15 02:00:13,828 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 02:00:13,829 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 02:00:13,829 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 02:00:13,829 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 02:00:13,871 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-15 02:00:18,126 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-15 02:00:18,131 INFO L183 IcfgInterpreter]: Interpretation finished