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-rb-sentinel-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:59:13,372 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:59:13,375 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:59:13,387 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:59:13,387 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:59:13,388 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:59:13,390 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:59:13,392 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:59:13,393 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:59:13,394 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:59:13,395 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:59:13,396 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:59:13,397 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:59:13,398 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:59:13,399 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:59:13,400 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:59:13,401 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:59:13,402 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:59:13,404 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:59:13,408 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:59:13,410 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:59:13,411 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:59:13,412 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:59:13,413 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:59:13,417 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:59:13,417 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:59:13,419 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:59:13,420 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:59:13,421 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:59:13,424 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:59:13,424 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:59:13,425 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:59:13,427 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:59:13,428 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:59:13,429 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:59:13,429 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:59:13,430 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:59:13,430 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:59:13,430 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:59:13,434 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:59:13,435 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:59:13,435 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 01:59:13,449 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:59:13,450 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:59:13,451 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:59:13,451 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:59:13,451 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:59:13,452 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:59:13,452 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:59:13,452 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:59:13,452 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:59:13,452 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:59:13,453 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:59:13,453 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:59:13,453 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:59:13,453 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:59:13,453 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:59:13,454 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:59:13,454 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:59:13,454 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:59:13,454 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:59:13,454 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:59:13,455 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:59:13,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:59:13,455 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:59:13,455 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:59:13,455 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:59:13,456 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:59:13,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:59:13,456 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:59:13,456 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 01:59:13,741 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:59:13,755 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:59:13,758 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:59:13,760 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:59:13,760 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:59:13,761 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-rb-sentinel-1.i [2019-10-15 01:59:13,823 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/749b300e6/f899f6bed8ce4306a27352cd21c53501/FLAGaf29f59ca [2019-10-15 01:59:14,362 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:59:14,363 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-rb-sentinel-1.i [2019-10-15 01:59:14,375 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/749b300e6/f899f6bed8ce4306a27352cd21c53501/FLAGaf29f59ca [2019-10-15 01:59:14,695 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/749b300e6/f899f6bed8ce4306a27352cd21c53501 [2019-10-15 01:59:14,705 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:59:14,706 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:59:14,707 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:59:14,708 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:59:14,711 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:59:14,712 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:59:14" (1/1) ... [2019-10-15 01:59:14,715 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@240d376e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:14, skipping insertion in model container [2019-10-15 01:59:14,715 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:59:14" (1/1) ... [2019-10-15 01:59:14,723 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:59:14,779 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:59:15,169 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:59:15,190 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:59:15,244 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:59:15,299 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:59:15,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:15 WrapperNode [2019-10-15 01:59:15,300 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:59:15,301 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:59:15,301 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:59:15,301 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:59:15,314 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:15" (1/1) ... [2019-10-15 01:59:15,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:15" (1/1) ... [2019-10-15 01:59:15,332 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:15" (1/1) ... [2019-10-15 01:59:15,332 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:15" (1/1) ... [2019-10-15 01:59:15,349 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:15" (1/1) ... [2019-10-15 01:59:15,356 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:15" (1/1) ... [2019-10-15 01:59:15,359 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:15" (1/1) ... [2019-10-15 01:59:15,365 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:59:15,366 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:59:15,366 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:59:15,366 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:59:15,367 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:15" (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 01:59:15,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:59:15,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:59:15,419 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:59:15,419 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-15 01:59:15,419 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-15 01:59:15,420 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-15 01:59:15,420 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-15 01:59:15,420 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-15 01:59:15,421 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-15 01:59:15,421 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-15 01:59:15,421 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-15 01:59:15,421 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-15 01:59:15,421 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-15 01:59:15,422 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-15 01:59:15,422 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-15 01:59:15,422 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-15 01:59:15,422 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-15 01:59:15,423 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-15 01:59:15,423 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-15 01:59:15,423 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-15 01:59:15,424 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-15 01:59:15,424 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-15 01:59:15,425 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-15 01:59:15,425 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-15 01:59:15,425 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-15 01:59:15,426 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-15 01:59:15,427 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-15 01:59:15,427 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-15 01:59:15,427 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-15 01:59:15,427 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-15 01:59:15,427 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-15 01:59:15,427 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-15 01:59:15,428 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-15 01:59:15,428 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-15 01:59:15,428 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-15 01:59:15,428 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-15 01:59:15,428 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-15 01:59:15,429 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-15 01:59:15,429 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-15 01:59:15,429 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-15 01:59:15,430 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-15 01:59:15,430 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-15 01:59:15,430 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-15 01:59:15,430 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-15 01:59:15,430 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-15 01:59:15,430 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-15 01:59:15,430 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-15 01:59:15,431 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-15 01:59:15,431 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-15 01:59:15,431 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-15 01:59:15,431 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-15 01:59:15,431 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-15 01:59:15,431 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-15 01:59:15,431 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:59:15,432 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-15 01:59:15,432 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-15 01:59:15,432 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:59:15,432 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-15 01:59:15,432 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-15 01:59:15,433 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-15 01:59:15,433 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-15 01:59:15,433 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-15 01:59:15,433 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-15 01:59:15,434 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-15 01:59:15,434 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-15 01:59:15,434 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-15 01:59:15,434 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:59:15,434 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-15 01:59:15,435 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-15 01:59:15,435 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-15 01:59:15,435 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-15 01:59:15,436 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-15 01:59:15,436 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-15 01:59:15,437 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-15 01:59:15,437 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-15 01:59:15,437 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-15 01:59:15,438 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-15 01:59:15,438 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-15 01:59:15,438 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-15 01:59:15,439 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-15 01:59:15,440 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-15 01:59:15,440 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-15 01:59:15,440 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-15 01:59:15,440 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-15 01:59:15,440 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-15 01:59:15,440 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-15 01:59:15,441 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-15 01:59:15,441 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-15 01:59:15,442 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-15 01:59:15,442 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-15 01:59:15,442 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-15 01:59:15,442 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-15 01:59:15,442 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-15 01:59:15,442 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-15 01:59:15,443 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-15 01:59:15,443 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-15 01:59:15,443 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-15 01:59:15,443 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-15 01:59:15,443 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-15 01:59:15,443 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-15 01:59:15,444 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-15 01:59:15,444 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-15 01:59:15,444 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-15 01:59:15,444 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-15 01:59:15,444 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-15 01:59:15,444 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-15 01:59:15,444 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:59:15,444 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:59:15,445 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:59:15,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:59:15,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:59:15,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:59:15,445 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:59:15,445 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:59:15,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:59:15,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:59:15,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:59:16,180 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:59:16,180 INFO L284 CfgBuilder]: Removed 11 assume(true) statements. [2019-10-15 01:59:16,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:59:16 BoogieIcfgContainer [2019-10-15 01:59:16,182 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:59:16,183 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:59:16,183 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:59:16,187 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:59:16,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:59:14" (1/3) ... [2019-10-15 01:59:16,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@733f3a1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:59:16, skipping insertion in model container [2019-10-15 01:59:16,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:15" (2/3) ... [2019-10-15 01:59:16,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@733f3a1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:59:16, skipping insertion in model container [2019-10-15 01:59:16,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:59:16" (3/3) ... [2019-10-15 01:59:16,191 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-rb-sentinel-1.i [2019-10-15 01:59:16,201 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:59:16,209 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-10-15 01:59:16,220 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-10-15 01:59:16,246 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:59:16,246 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:59:16,247 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:59:16,247 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:59:16,247 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:59:16,247 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:59:16,248 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:59:16,248 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:59:16,267 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2019-10-15 01:59:16,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-10-15 01:59:16,273 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:59:16,275 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:59:16,277 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:59:16,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:59:16,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1881121825, now seen corresponding path program 1 times [2019-10-15 01:59:16,293 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:59:16,293 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841393676] [2019-10-15 01:59:16,294 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:59:16,294 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:59:16,294 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:59:16,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:59:16,467 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 01:59:16,468 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841393676] [2019-10-15 01:59:16,469 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:59:16,470 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:59:16,470 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881610468] [2019-10-15 01:59:16,477 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:59:16,477 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:59:16,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:59:16,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:59:16,495 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2019-10-15 01:59:16,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:59:16,517 INFO L93 Difference]: Finished difference Result 59 states and 89 transitions. [2019-10-15 01:59:16,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:59:16,519 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2019-10-15 01:59:16,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:59:16,528 INFO L225 Difference]: With dead ends: 59 [2019-10-15 01:59:16,529 INFO L226 Difference]: Without dead ends: 29 [2019-10-15 01:59:16,532 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 01:59:16,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-10-15 01:59:16,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-10-15 01:59:16,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-10-15 01:59:16,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2019-10-15 01:59:16,604 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 9 [2019-10-15 01:59:16,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:59:16,604 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2019-10-15 01:59:16,604 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:59:16,605 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2019-10-15 01:59:16,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-15 01:59:16,605 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:59:16,605 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:59:16,606 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:59:16,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:59:16,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1802396536, now seen corresponding path program 1 times [2019-10-15 01:59:16,608 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:59:16,608 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373335180] [2019-10-15 01:59:16,608 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:59:16,608 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:59:16,608 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:59:16,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:59:16,743 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 01:59:16,744 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373335180] [2019-10-15 01:59:16,744 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:59:16,744 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:59:16,745 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888163405] [2019-10-15 01:59:16,746 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:59:16,746 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:59:16,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:59:16,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:59:16,747 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 4 states. [2019-10-15 01:59:16,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:59:16,827 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2019-10-15 01:59:16,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:59:16,827 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-10-15 01:59:16,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:59:16,829 INFO L225 Difference]: With dead ends: 35 [2019-10-15 01:59:16,829 INFO L226 Difference]: Without dead ends: 33 [2019-10-15 01:59:16,830 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:59:16,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-10-15 01:59:16,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 27. [2019-10-15 01:59:16,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-10-15 01:59:16,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2019-10-15 01:59:16,834 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 10 [2019-10-15 01:59:16,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:59:16,835 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2019-10-15 01:59:16,835 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:59:16,835 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2019-10-15 01:59:16,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-15 01:59:16,836 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:59:16,836 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:59:16,836 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:59:16,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:59:16,837 INFO L82 PathProgramCache]: Analyzing trace with hash -481985199, now seen corresponding path program 1 times [2019-10-15 01:59:16,837 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:59:16,837 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836718301] [2019-10-15 01:59:16,837 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:59:16,838 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:59:16,838 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:59:16,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:59:16,926 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 01:59:16,927 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836718301] [2019-10-15 01:59:16,927 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:59:16,927 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:59:16,928 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955460922] [2019-10-15 01:59:16,929 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:59:16,929 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:59:16,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:59:16,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:59:16,930 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 5 states. [2019-10-15 01:59:17,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:59:17,168 INFO L93 Difference]: Finished difference Result 52 states and 57 transitions. [2019-10-15 01:59:17,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:59:17,169 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-10-15 01:59:17,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:59:17,170 INFO L225 Difference]: With dead ends: 52 [2019-10-15 01:59:17,170 INFO L226 Difference]: Without dead ends: 50 [2019-10-15 01:59:17,171 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:59:17,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-10-15 01:59:17,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 34. [2019-10-15 01:59:17,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-10-15 01:59:17,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2019-10-15 01:59:17,179 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 13 [2019-10-15 01:59:17,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:59:17,179 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2019-10-15 01:59:17,179 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:59:17,179 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2019-10-15 01:59:17,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-15 01:59:17,180 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:59:17,180 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:59:17,181 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:59:17,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:59:17,181 INFO L82 PathProgramCache]: Analyzing trace with hash -525958984, now seen corresponding path program 1 times [2019-10-15 01:59:17,181 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:59:17,181 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732353266] [2019-10-15 01:59:17,182 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:59:17,182 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:59:17,182 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:59:17,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:59:17,512 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 01:59:17,512 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732353266] [2019-10-15 01:59:17,512 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320482827] [2019-10-15 01:59:17,512 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 01:59:17,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:59:17,642 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 23 conjunts are in the unsatisfiable core [2019-10-15 01:59:17,649 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:59:17,737 INFO L341 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2019-10-15 01:59:17,737 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 1 case distinctions, treesize of input 9 treesize of output 11 [2019-10-15 01:59:17,738 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:17,755 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:17,762 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2019-10-15 01:59:17,763 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:17,781 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:17,783 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-15 01:59:17,783 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:32, output treesize:29 [2019-10-15 01:59:17,864 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:59:17,917 INFO L392 ElimStorePlain]: Different costs {1=[|v_#valid_44|], 4=[v_prenex_12]} [2019-10-15 01:59:18,373 INFO L235 Elim1Store]: Index analysis took 136 ms [2019-10-15 01:59:18,385 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:18,386 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 145 treesize of output 149 [2019-10-15 01:59:18,388 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:21,969 WARN L191 SmtUtils]: Spent 3.58 s on a formula simplification that was a NOOP. DAG size: 162 [2019-10-15 01:59:21,969 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:23,070 INFO L235 Elim1Store]: Index analysis took 541 ms [2019-10-15 01:59:23,094 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:23,094 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 259 treesize of output 277 [2019-10-15 01:59:23,095 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:27,253 WARN L191 SmtUtils]: Spent 4.16 s on a formula simplification that was a NOOP. DAG size: 159 [2019-10-15 01:59:27,254 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:27,264 INFO L392 ElimStorePlain]: Different costs {0=[v_prenex_8, v_prenex_9, |v_#memory_$Pointer$.base_37|, |v_#memory_$Pointer$.offset_37|, |#memory_$Pointer$.base|, |#memory_$Pointer$.offset|, |v_#memory_int_46|, v_prenex_2, v_prenex_11], 2=[|v_#memory_int_50|, |v_#memory_int_48|, |v_#memory_int_49|, |v_#memory_int_47|, v_prenex_4, v_prenex_7], 4=[v_prenex_5], 6=[|v_#memory_$Pointer$.base_36|, |v_#memory_$Pointer$.offset_36|]} [2019-10-15 01:59:27,338 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:59:27,597 INFO L235 Elim1Store]: Index analysis took 279 ms [2019-10-15 01:59:27,906 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 252 treesize of output 228 [2019-10-15 01:59:27,906 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:32,334 WARN L191 SmtUtils]: Spent 4.43 s on a formula simplification that was a NOOP. DAG size: 154 [2019-10-15 01:59:32,334 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:32,471 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:35,134 WARN L191 SmtUtils]: Spent 2.66 s on a formula simplification that was a NOOP. DAG size: 144 [2019-10-15 01:59:35,134 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:35,274 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:59:35,276 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 115 [2019-10-15 01:59:35,277 INFO L496 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:37,725 WARN L191 SmtUtils]: Spent 2.45 s on a formula simplification that was a NOOP. DAG size: 139 [2019-10-15 01:59:37,726 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:37,769 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:59:37,771 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 91 [2019-10-15 01:59:37,771 INFO L496 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:39,004 WARN L191 SmtUtils]: Spent 1.23 s on a formula simplification that was a NOOP. DAG size: 134 [2019-10-15 01:59:39,005 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:39,038 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 83 [2019-10-15 01:59:39,039 INFO L496 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:40,212 WARN L191 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 126 [2019-10-15 01:59:40,213 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:40,254 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 69 [2019-10-15 01:59:40,255 INFO L496 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:41,310 WARN L191 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 118 [2019-10-15 01:59:41,311 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:41,339 INFO L496 ElimStorePlain]: Start of recursive call 10: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-15 01:59:42,297 WARN L191 SmtUtils]: Spent 957.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-10-15 01:59:42,297 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:42,347 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:59:42,349 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 182 treesize of output 158 [2019-10-15 01:59:42,350 INFO L496 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:42,982 WARN L191 SmtUtils]: Spent 631.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2019-10-15 01:59:42,983 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:42,992 INFO L496 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:43,403 WARN L191 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2019-10-15 01:59:43,404 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:43,416 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:59:43,424 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 63 treesize of output 51 [2019-10-15 01:59:43,425 INFO L496 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:43,587 WARN L191 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2019-10-15 01:59:43,588 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:43,611 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 36 [2019-10-15 01:59:43,612 INFO L496 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:43,736 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2019-10-15 01:59:43,737 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:43,755 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2019-10-15 01:59:43,756 INFO L496 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:43,860 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2019-10-15 01:59:43,861 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:43,871 INFO L496 ElimStorePlain]: Start of recursive call 16: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-15 01:59:43,995 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2019-10-15 01:59:43,996 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:44,001 INFO L496 ElimStorePlain]: Start of recursive call 17: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-15 01:59:44,096 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:44,109 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:59:44,117 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 110 [2019-10-15 01:59:44,118 INFO L496 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:44,186 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:44,196 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:59:44,197 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:59:44,198 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:59:44,214 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 103 [2019-10-15 01:59:44,215 INFO L496 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:44,279 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:44,286 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 89 [2019-10-15 01:59:44,287 INFO L496 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:44,340 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:44,352 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 75 [2019-10-15 01:59:44,353 INFO L496 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:44,402 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:44,405 INFO L496 ElimStorePlain]: Start of recursive call 1: 11 dim-0 vars, 2 dim-1 vars, 18 dim-2 vars, End of recursive call: 5 dim-0 vars, and 2 xjuncts. [2019-10-15 01:59:44,405 INFO L221 ElimStorePlain]: Needed 21 recursive calls to eliminate 31 variables, input treesize:404, output treesize:72 [2019-10-15 01:59:44,489 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 10 [2019-10-15 01:59:44,490 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:44,497 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:44,498 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-15 01:59:44,498 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:28, output treesize:3 [2019-10-15 01:59:44,507 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 01:59:44,507 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:59:44,564 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:59:44,603 INFO L392 ElimStorePlain]: Different costs {0=[v_prenex_19, |#memory_$Pointer$.base|, |v_#memory_$Pointer$.base_38|, |#memory_$Pointer$.offset|, |v_#memory_$Pointer$.offset_38|, v_prenex_23, v_prenex_22, v_prenex_16], 2=[|v_#memory_int_48|, v_prenex_14, |v_#memory_int_47|], 3=[|v_#memory_int_49|, |v_#memory_int_46|], 4=[v_prenex_15], 6=[|v_#memory_$Pointer$.base_36|, |v_#memory_$Pointer$.offset_36|]} [2019-10-15 01:59:44,782 INFO L172 IndexEqualityManager]: detected equality via solver [2019-10-15 01:59:44,912 INFO L235 Elim1Store]: Index analysis took 176 ms [2019-10-15 01:59:45,369 INFO L341 Elim1Store]: treesize reduction 49, result has 43.7 percent of original size [2019-10-15 01:59:45,370 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 2 case distinctions, treesize of input 253 treesize of output 251 [2019-10-15 01:59:45,373 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:47,352 WARN L191 SmtUtils]: Spent 1.98 s on a formula simplification that was a NOOP. DAG size: 173 [2019-10-15 01:59:47,352 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:47,422 INFO L172 IndexEqualityManager]: detected equality via solver [2019-10-15 01:59:47,605 INFO L341 Elim1Store]: treesize reduction 49, result has 43.7 percent of original size [2019-10-15 01:59:47,606 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 2 case distinctions, treesize of input 136 treesize of output 134 [2019-10-15 01:59:47,607 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:49,567 WARN L191 SmtUtils]: Spent 1.96 s on a formula simplification that was a NOOP. DAG size: 178 [2019-10-15 01:59:49,568 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:49,701 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:49,701 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 134 treesize of output 141 [2019-10-15 01:59:49,702 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:59:49,703 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:50,505 WARN L191 SmtUtils]: Spent 800.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2019-10-15 01:59:50,505 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:50,551 INFO L172 IndexEqualityManager]: detected equality via solver [2019-10-15 01:59:50,638 INFO L341 Elim1Store]: treesize reduction 49, result has 43.7 percent of original size [2019-10-15 01:59:50,639 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 2 case distinctions, treesize of input 97 treesize of output 95 [2019-10-15 01:59:50,639 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:51,608 WARN L191 SmtUtils]: Spent 968.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2019-10-15 01:59:51,609 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:51,702 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:51,703 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 95 treesize of output 102 [2019-10-15 01:59:51,704 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:59:51,705 INFO L496 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:52,272 WARN L191 SmtUtils]: Spent 566.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2019-10-15 01:59:52,273 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:52,306 INFO L496 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:52,767 WARN L191 SmtUtils]: Spent 459.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-10-15 01:59:52,767 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:52,808 INFO L172 IndexEqualityManager]: detected equality via solver [2019-10-15 01:59:52,880 INFO L341 Elim1Store]: treesize reduction 49, result has 43.7 percent of original size [2019-10-15 01:59:52,881 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 2 case distinctions, treesize of input 216 treesize of output 214 [2019-10-15 01:59:52,882 INFO L496 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:53,250 WARN L191 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2019-10-15 01:59:53,250 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:53,259 INFO L496 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:53,442 WARN L191 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2019-10-15 01:59:53,443 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:53,450 INFO L496 ElimStorePlain]: Start of recursive call 10: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-15 01:59:53,640 WARN L191 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-10-15 01:59:53,640 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:53,647 INFO L496 ElimStorePlain]: Start of recursive call 11: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-15 01:59:53,897 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-10-15 01:59:53,898 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:53,929 INFO L496 ElimStorePlain]: Start of recursive call 12: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-15 01:59:54,211 WARN L191 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2019-10-15 01:59:54,211 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:54,218 INFO L496 ElimStorePlain]: Start of recursive call 13: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-15 01:59:54,339 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2019-10-15 01:59:54,340 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:54,351 INFO L496 ElimStorePlain]: Start of recursive call 14: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-15 01:59:54,438 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:54,447 INFO L496 ElimStorePlain]: Start of recursive call 15: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-15 01:59:54,531 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:54,555 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:54,556 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 177 treesize of output 184 [2019-10-15 01:59:54,557 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:59:54,558 INFO L496 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:54,629 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:54,654 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:54,654 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 140 treesize of output 147 [2019-10-15 01:59:54,655 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:59:54,656 INFO L496 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:54,687 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:54,688 INFO L496 ElimStorePlain]: Start of recursive call 1: 9 dim-0 vars, 16 dim-2 vars, End of recursive call: 11 dim-0 vars, and 2 xjuncts. [2019-10-15 01:59:54,689 INFO L221 ElimStorePlain]: Needed 17 recursive calls to eliminate 25 variables, input treesize:390, output treesize:149 [2019-10-15 01:59:54,749 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:59:54,750 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:54,750 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:54,752 INFO L464 ElimStorePlain]: Eliminatee |v_#memory_int_45| vanished before elimination [2019-10-15 01:59:54,752 INFO L496 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-15 01:59:54,753 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 9 variables, input treesize:58, output treesize:1 [2019-10-15 01:59:54,757 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 01:59:54,758 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1683927855] [2019-10-15 01:59:54,782 INFO L162 IcfgInterpreter]: Started Sifa with 14 locations of interest [2019-10-15 01:59:54,783 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 01:59:54,788 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 01:59:54,794 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 01:59:54,794 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 01:59:54,880 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs