java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/list-ext-properties/list-ext_flag.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 13:10:09,198 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 13:10:09,200 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 13:10:09,213 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 13:10:09,213 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 13:10:09,214 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 13:10:09,216 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 13:10:09,218 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 13:10:09,220 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 13:10:09,221 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 13:10:09,222 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 13:10:09,223 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 13:10:09,223 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 13:10:09,224 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 13:10:09,225 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 13:10:09,227 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 13:10:09,227 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 13:10:09,228 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 13:10:09,230 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 13:10:09,232 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 13:10:09,233 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 13:10:09,234 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 13:10:09,235 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 13:10:09,236 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 13:10:09,238 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 13:10:09,239 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 13:10:09,239 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 13:10:09,240 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 13:10:09,240 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 13:10:09,241 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 13:10:09,241 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 13:10:09,242 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 13:10:09,243 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 13:10:09,244 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 13:10:09,245 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 13:10:09,245 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 13:10:09,246 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 13:10:09,246 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 13:10:09,246 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 13:10:09,247 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 13:10:09,248 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 13:10:09,248 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 [2019-10-07 13:10:09,263 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 13:10:09,264 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 13:10:09,265 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 13:10:09,265 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 13:10:09,265 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 13:10:09,266 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 13:10:09,266 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 13:10:09,266 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 13:10:09,266 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 13:10:09,266 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 13:10:09,267 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 13:10:09,267 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 13:10:09,267 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 13:10:09,267 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 13:10:09,267 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 13:10:09,268 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 13:10:09,268 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 13:10:09,268 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 13:10:09,268 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 13:10:09,269 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 13:10:09,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 13:10:09,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 13:10:09,269 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 13:10:09,270 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 13:10:09,270 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 13:10:09,270 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 13:10:09,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 13:10:09,270 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 13:10:09,271 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 [2019-10-07 13:10:09,559 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 13:10:09,574 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 13:10:09,578 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 13:10:09,579 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 13:10:09,580 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 13:10:09,580 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext-properties/list-ext_flag.i [2019-10-07 13:10:09,658 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3741ab353/2b26cea54b78404fb96412c3b3f7d013/FLAG66ba531c8 [2019-10-07 13:10:10,251 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 13:10:10,251 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-ext-properties/list-ext_flag.i [2019-10-07 13:10:10,268 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3741ab353/2b26cea54b78404fb96412c3b3f7d013/FLAG66ba531c8 [2019-10-07 13:10:10,474 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3741ab353/2b26cea54b78404fb96412c3b3f7d013 [2019-10-07 13:10:10,483 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 13:10:10,485 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 13:10:10,486 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 13:10:10,487 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 13:10:10,491 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 13:10:10,492 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:10:10" (1/1) ... [2019-10-07 13:10:10,496 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e92a5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:10:10, skipping insertion in model container [2019-10-07 13:10:10,496 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:10:10" (1/1) ... [2019-10-07 13:10:10,506 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 13:10:10,554 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 13:10:11,032 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:10:11,052 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 13:10:11,140 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:10:11,195 INFO L192 MainTranslator]: Completed translation [2019-10-07 13:10:11,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:10:11 WrapperNode [2019-10-07 13:10:11,196 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 13:10:11,196 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 13:10:11,197 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 13:10:11,197 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 13:10:11,211 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:10:11" (1/1) ... [2019-10-07 13:10:11,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:10:11" (1/1) ... [2019-10-07 13:10:11,236 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:10:11" (1/1) ... [2019-10-07 13:10:11,236 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:10:11" (1/1) ... [2019-10-07 13:10:11,254 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:10:11" (1/1) ... [2019-10-07 13:10:11,264 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:10:11" (1/1) ... [2019-10-07 13:10:11,268 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:10:11" (1/1) ... [2019-10-07 13:10:11,274 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 13:10:11,275 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 13:10:11,275 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 13:10:11,275 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 13:10:11,276 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:10:11" (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 [2019-10-07 13:10:11,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 13:10:11,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 13:10:11,340 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-07 13:10:11,341 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-07 13:10:11,341 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-10-07 13:10:11,341 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-10-07 13:10:11,341 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-10-07 13:10:11,341 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-10-07 13:10:11,341 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 13:10:11,342 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 13:10:11,342 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 13:10:11,342 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-07 13:10:11,342 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-07 13:10:11,342 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-07 13:10:11,343 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-07 13:10:11,343 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-07 13:10:11,343 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-07 13:10:11,343 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-07 13:10:11,343 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-07 13:10:11,344 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-07 13:10:11,344 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-07 13:10:11,344 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-07 13:10:11,344 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-07 13:10:11,344 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-07 13:10:11,344 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-07 13:10:11,344 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-07 13:10:11,345 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-07 13:10:11,345 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-07 13:10:11,345 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-07 13:10:11,345 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-10-07 13:10:11,345 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-10-07 13:10:11,345 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-10-07 13:10:11,346 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-07 13:10:11,346 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-07 13:10:11,346 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-07 13:10:11,346 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-07 13:10:11,346 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-07 13:10:11,346 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-07 13:10:11,347 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-07 13:10:11,347 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-07 13:10:11,347 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-07 13:10:11,347 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-07 13:10:11,347 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-07 13:10:11,347 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-07 13:10:11,347 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-07 13:10:11,348 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-07 13:10:11,348 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-07 13:10:11,348 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-07 13:10:11,348 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-07 13:10:11,348 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-07 13:10:11,348 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-07 13:10:11,349 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-07 13:10:11,349 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-07 13:10:11,349 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-07 13:10:11,349 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-07 13:10:11,349 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-07 13:10:11,349 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-07 13:10:11,350 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-07 13:10:11,350 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-07 13:10:11,350 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-07 13:10:11,350 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-07 13:10:11,350 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-07 13:10:11,350 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-07 13:10:11,351 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-07 13:10:11,351 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-07 13:10:11,351 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-07 13:10:11,351 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-07 13:10:11,351 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-07 13:10:11,352 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-07 13:10:11,352 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-07 13:10:11,352 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-07 13:10:11,352 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-07 13:10:11,352 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-07 13:10:11,352 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-07 13:10:11,353 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-07 13:10:11,353 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-07 13:10:11,353 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-07 13:10:11,353 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-07 13:10:11,353 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 13:10:11,353 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-07 13:10:11,354 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-07 13:10:11,354 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-07 13:10:11,354 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-07 13:10:11,354 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-07 13:10:11,354 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-07 13:10:11,354 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-07 13:10:11,354 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-07 13:10:11,355 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-07 13:10:11,355 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-07 13:10:11,355 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-07 13:10:11,355 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-07 13:10:11,355 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-07 13:10:11,355 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-07 13:10:11,356 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-07 13:10:11,356 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-07 13:10:11,356 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-07 13:10:11,356 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-07 13:10:11,356 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-07 13:10:11,356 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-07 13:10:11,356 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-07 13:10:11,357 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-07 13:10:11,357 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-07 13:10:11,357 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-07 13:10:11,357 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-07 13:10:11,357 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-07 13:10:11,357 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-07 13:10:11,358 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-07 13:10:11,358 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-07 13:10:11,358 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-07 13:10:11,358 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-07 13:10:11,358 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-07 13:10:11,358 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-07 13:10:11,358 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-07 13:10:11,359 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-07 13:10:11,359 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-07 13:10:11,359 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-07 13:10:11,359 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-07 13:10:11,359 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-07 13:10:11,359 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-10-07 13:10:11,359 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 13:10:11,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-07 13:10:11,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 13:10:11,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 13:10:11,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-07 13:10:11,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-07 13:10:11,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 13:10:11,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 13:10:11,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 13:10:11,791 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-10-07 13:10:12,100 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 13:10:12,101 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-07 13:10:12,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:10:12 BoogieIcfgContainer [2019-10-07 13:10:12,103 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 13:10:12,104 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 13:10:12,104 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 13:10:12,108 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 13:10:12,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 01:10:10" (1/3) ... [2019-10-07 13:10:12,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58125c90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:10:12, skipping insertion in model container [2019-10-07 13:10:12,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:10:11" (2/3) ... [2019-10-07 13:10:12,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58125c90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:10:12, skipping insertion in model container [2019-10-07 13:10:12,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:10:12" (3/3) ... [2019-10-07 13:10:12,112 INFO L109 eAbstractionObserver]: Analyzing ICFG list-ext_flag.i [2019-10-07 13:10:12,122 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 13:10:12,128 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 13:10:12,140 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 13:10:12,167 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 13:10:12,168 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 13:10:12,168 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 13:10:12,169 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 13:10:12,170 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 13:10:12,170 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 13:10:12,170 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 13:10:12,170 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 13:10:12,187 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2019-10-07 13:10:12,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-07 13:10:12,194 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:10:12,195 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:10:12,197 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:10:12,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:10:12,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1488599810, now seen corresponding path program 1 times [2019-10-07 13:10:12,211 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:10:12,212 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:10:12,212 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:10:12,212 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:10:12,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:10:12,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:10:12,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:10:12,359 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:10:12,360 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:10:12,360 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-07 13:10:12,364 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-07 13:10:12,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-07 13:10:12,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-07 13:10:12,384 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2019-10-07 13:10:12,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:10:12,416 INFO L93 Difference]: Finished difference Result 51 states and 69 transitions. [2019-10-07 13:10:12,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-07 13:10:12,418 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-10-07 13:10:12,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:10:12,429 INFO L225 Difference]: With dead ends: 51 [2019-10-07 13:10:12,429 INFO L226 Difference]: Without dead ends: 22 [2019-10-07 13:10:12,434 INFO L606 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 [2019-10-07 13:10:12,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-10-07 13:10:12,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-10-07 13:10:12,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-10-07 13:10:12,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2019-10-07 13:10:12,482 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 13 [2019-10-07 13:10:12,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:10:12,483 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2019-10-07 13:10:12,483 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-07 13:10:12,483 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2019-10-07 13:10:12,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-07 13:10:12,484 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:10:12,484 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:10:12,485 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:10:12,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:10:12,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1095619890, now seen corresponding path program 1 times [2019-10-07 13:10:12,486 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:10:12,486 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:10:12,486 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:10:12,486 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:10:12,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:10:12,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:10:12,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:10:12,666 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:10:12,666 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:10:12,666 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 13:10:12,668 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 13:10:12,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 13:10:12,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-07 13:10:12,669 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 6 states. [2019-10-07 13:10:12,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:10:12,754 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2019-10-07 13:10:12,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 13:10:12,754 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2019-10-07 13:10:12,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:10:12,756 INFO L225 Difference]: With dead ends: 37 [2019-10-07 13:10:12,756 INFO L226 Difference]: Without dead ends: 33 [2019-10-07 13:10:12,757 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-07 13:10:12,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-10-07 13:10:12,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 27. [2019-10-07 13:10:12,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-10-07 13:10:12,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2019-10-07 13:10:12,764 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 15 [2019-10-07 13:10:12,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:10:12,764 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2019-10-07 13:10:12,764 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 13:10:12,764 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2019-10-07 13:10:12,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-07 13:10:12,765 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:10:12,765 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:10:12,766 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:10:12,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:10:12,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1095661616, now seen corresponding path program 1 times [2019-10-07 13:10:12,766 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:10:12,767 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:10:12,767 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:10:12,767 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:10:12,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:10:12,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:10:12,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:10:12,873 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:10:12,873 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:10:12,874 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-07 13:10:12,878 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 13:10:12,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 13:10:12,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 13:10:12,879 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand 5 states. [2019-10-07 13:10:13,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:10:13,021 INFO L93 Difference]: Finished difference Result 49 states and 60 transitions. [2019-10-07 13:10:13,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 13:10:13,023 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2019-10-07 13:10:13,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:10:13,024 INFO L225 Difference]: With dead ends: 49 [2019-10-07 13:10:13,024 INFO L226 Difference]: Without dead ends: 36 [2019-10-07 13:10:13,025 INFO L606 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 [2019-10-07 13:10:13,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-10-07 13:10:13,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 24. [2019-10-07 13:10:13,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-10-07 13:10:13,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2019-10-07 13:10:13,035 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 15 [2019-10-07 13:10:13,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:10:13,035 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2019-10-07 13:10:13,035 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 13:10:13,036 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2019-10-07 13:10:13,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-07 13:10:13,039 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:10:13,040 INFO L385 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:10:13,040 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:10:13,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:10:13,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1925750866, now seen corresponding path program 1 times [2019-10-07 13:10:13,041 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:10:13,041 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:10:13,046 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:10:13,046 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:10:13,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:10:13,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:10:13,168 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:10:13,168 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:10:13,168 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:10:13,169 INFO L95 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 [2019-10-07 13:10:13,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:10:13,307 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-07 13:10:13,314 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:10:13,445 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-10-07 13:10:13,450 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-07 13:10:13,465 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-07 13:10:13,465 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-07 13:10:13,466 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:18, output treesize:7 [2019-10-07 13:10:13,486 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:10:13,486 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:10:13,505 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:10:13,537 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:10:13,538 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 13:10:13,566 INFO L162 IcfgInterpreter]: Started Sifa with 18 locations of interest [2019-10-07 13:10:13,567 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 13:10:13,574 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 13:10:13,583 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 13:10:13,583 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 13:10:13,712 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-07 13:10:16,674 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-07 13:10:16,678 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 13:10:16,679 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 13:10:16,679 INFO L193 IcfgInterpreter]: Reachable states at location L524 satisfy 38#(and (<= |main_#t~malloc2.offset| 0) (= (store |old(#length)| |main_#t~malloc2.base| 12) |#length|) (= 0 |#NULL.base|) (not (= |main_#t~malloc2.base| 0)) (<= |#NULL.base| 0) (<= main_~a~0.offset 0) (= 0 |main_#t~malloc2.offset|) (<= 0 main_~a~0.offset) (<= 0 |#NULL.base|) (= |#valid| (store |old(#valid)| |main_#t~malloc2.base| 1)) (<= 0 |main_#t~malloc2.offset|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= main_~a~0.offset |main_#t~malloc2.offset|) (= (select |old(#valid)| |main_#t~malloc2.base|) 0) (= |main_#t~malloc2.base| main_~a~0.base) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (< |#StackHeapBarrier| |main_#t~malloc2.base|) (= |#NULL.offset| 0) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2019-10-07 13:10:16,679 INFO L193 IcfgInterpreter]: Reachable states at location L527-3 satisfy 334#true [2019-10-07 13:10:16,680 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 380#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 13:10:16,680 INFO L193 IcfgInterpreter]: Reachable states at location L536 satisfy 324#true [2019-10-07 13:10:16,680 INFO L193 IcfgInterpreter]: Reachable states at location L542-4 satisfy 354#true [2019-10-07 13:10:16,680 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 13:10:16,680 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2019-10-07 13:10:16,681 INFO L193 IcfgInterpreter]: Reachable states at location L542-3 satisfy 344#true [2019-10-07 13:10:16,681 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 385#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 13:10:16,681 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 13:10:16,681 INFO L193 IcfgInterpreter]: Reachable states at location L542-1 satisfy 349#true [2019-10-07 13:10:16,682 INFO L193 IcfgInterpreter]: Reachable states at location L524-3 satisfy 43#(and (<= |main_#t~malloc2.offset| 0) (or (and (= (store |old(#length)| |main_#t~malloc2.base| 12) |#length|) (= 0 |#NULL.base|) (not (= |main_#t~malloc2.base| 0)) (<= |#NULL.base| 0) (= 0 |main_#t~malloc2.offset|) (not (= main_~a~0.offset 0)) (= |#valid| (store |old(#valid)| |main_#t~malloc2.base| 1)) (= 0 (select |old(#valid)| 0)) (= main_~a~0.offset |main_#t~malloc2.offset|) (= (select |old(#valid)| |main_#t~malloc2.base|) 0) (= |main_#t~malloc2.base| main_~a~0.base) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (< |#StackHeapBarrier| |main_#t~malloc2.base|) (= |#NULL.offset| 0) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) (and (= (store |old(#length)| |main_#t~malloc2.base| 12) |#length|) (= 0 |#NULL.base|) (not (= |main_#t~malloc2.base| 0)) (<= |#NULL.base| 0) (= 0 |main_#t~malloc2.offset|) (not (= 0 main_~a~0.base)) (= |#valid| (store |old(#valid)| |main_#t~malloc2.base| 1)) (= 0 (select |old(#valid)| 0)) (= main_~a~0.offset |main_#t~malloc2.offset|) (= (select |old(#valid)| |main_#t~malloc2.base|) 0) (= |main_#t~malloc2.base| main_~a~0.base) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (< |#StackHeapBarrier| |main_#t~malloc2.base|) (= |#NULL.offset| 0) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))) (<= main_~a~0.offset 0) (<= 0 main_~a~0.offset) (<= 0 |#NULL.base|) (<= 0 |main_#t~malloc2.offset|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 13:10:16,682 INFO L193 IcfgInterpreter]: Reachable states at location L527-6 satisfy 339#true [2019-10-07 13:10:16,682 INFO L193 IcfgInterpreter]: Reachable states at location L553 satisfy 359#true [2019-10-07 13:10:16,682 INFO L193 IcfgInterpreter]: Reachable states at location mainErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 376#(<= 20 main_~i~0) [2019-10-07 13:10:16,682 INFO L193 IcfgInterpreter]: Reachable states at location L527-5 satisfy 145#true [2019-10-07 13:10:16,683 INFO L193 IcfgInterpreter]: Reachable states at location L554 satisfy 364#(and (< 20 main_~i~0) (= main_~a~0.base main_~p~0.base) (<= 20 main_~i~0) (= 3 (select (select |#memory_int| main_~t~0.base) main_~t~0.offset)) (= main_~a~0.offset main_~p~0.offset) (= 3 (select (select |#memory_int| main_~p~0.base) main_~p~0.offset))) [2019-10-07 13:10:16,683 INFO L193 IcfgInterpreter]: Reachable states at location L536-3 satisfy 137#true [2019-10-07 13:10:17,090 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 13:10:17,091 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 8] total 20 [2019-10-07 13:10:17,094 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-10-07 13:10:17,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-10-07 13:10:17,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2019-10-07 13:10:17,096 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 21 states. [2019-10-07 13:10:17,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:10:17,882 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2019-10-07 13:10:17,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-10-07 13:10:17,883 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 19 [2019-10-07 13:10:17,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:10:17,884 INFO L225 Difference]: With dead ends: 58 [2019-10-07 13:10:17,884 INFO L226 Difference]: Without dead ends: 50 [2019-10-07 13:10:17,887 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=212, Invalid=978, Unknown=0, NotChecked=0, Total=1190 [2019-10-07 13:10:17,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-10-07 13:10:17,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 22. [2019-10-07 13:10:17,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-10-07 13:10:17,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2019-10-07 13:10:17,900 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 19 [2019-10-07 13:10:17,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:10:17,901 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2019-10-07 13:10:17,901 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-10-07 13:10:17,901 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2019-10-07 13:10:17,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-07 13:10:17,902 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:10:17,902 INFO L385 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:10:18,108 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:10:18,109 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:10:18,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:10:18,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1925792592, now seen corresponding path program 1 times [2019-10-07 13:10:18,110 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:10:18,110 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:10:18,111 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:10:18,111 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:10:18,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:10:18,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:10:18,369 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:10:18,370 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:10:18,370 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:10:18,370 INFO L95 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 [2019-10-07 13:10:18,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:10:18,486 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 27 conjunts are in the unsatisfiable core [2019-10-07 13:10:18,489 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:10:19,346 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:10:19,347 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:10:19,654 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 86