java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/list-simple/dll2c_prepend_equal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 02:59:15,209 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 02:59:15,212 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 02:59:15,230 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 02:59:15,231 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 02:59:15,233 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 02:59:15,235 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 02:59:15,244 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 02:59:15,249 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 02:59:15,252 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 02:59:15,254 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 02:59:15,255 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 02:59:15,255 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 02:59:15,257 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 02:59:15,260 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 02:59:15,261 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 02:59:15,262 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 02:59:15,263 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 02:59:15,265 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 02:59:15,270 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 02:59:15,274 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 02:59:15,276 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 02:59:15,280 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 02:59:15,280 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 02:59:15,283 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 02:59:15,283 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 02:59:15,283 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 02:59:15,285 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 02:59:15,286 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 02:59:15,287 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 02:59:15,287 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 02:59:15,288 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 02:59:15,289 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 02:59:15,290 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 02:59:15,291 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 02:59:15,291 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 02:59:15,292 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 02:59:15,292 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 02:59:15,292 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 02:59:15,293 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 02:59:15,294 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 02:59:15,295 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 02:59:15,329 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 02:59:15,329 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 02:59:15,330 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 02:59:15,331 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 02:59:15,331 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 02:59:15,331 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 02:59:15,331 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 02:59:15,332 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 02:59:15,332 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 02:59:15,332 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 02:59:15,332 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 02:59:15,332 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 02:59:15,333 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 02:59:15,333 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 02:59:15,333 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 02:59:15,333 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 02:59:15,333 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 02:59:15,334 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 02:59:15,334 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 02:59:15,334 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 02:59:15,334 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 02:59:15,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 02:59:15,335 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 02:59:15,335 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 02:59:15,335 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 02:59:15,335 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 02:59:15,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 02:59:15,336 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 02:59:15,336 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 02:59:15,614 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 02:59:15,631 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 02:59:15,634 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 02:59:15,636 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 02:59:15,636 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 02:59:15,637 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2c_prepend_equal.i [2019-10-15 02:59:15,716 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6cdec9f5/9457b71461c84c53923b7ff176f1e446/FLAGd5513fc8b [2019-10-15 02:59:16,236 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 02:59:16,237 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/dll2c_prepend_equal.i [2019-10-15 02:59:16,251 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6cdec9f5/9457b71461c84c53923b7ff176f1e446/FLAGd5513fc8b [2019-10-15 02:59:16,537 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6cdec9f5/9457b71461c84c53923b7ff176f1e446 [2019-10-15 02:59:16,547 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 02:59:16,548 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 02:59:16,549 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 02:59:16,549 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 02:59:16,553 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 02:59:16,554 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:59:16" (1/1) ... [2019-10-15 02:59:16,557 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1407ef7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:16, skipping insertion in model container [2019-10-15 02:59:16,557 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:59:16" (1/1) ... [2019-10-15 02:59:16,565 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 02:59:16,614 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 02:59:17,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 02:59:17,072 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 02:59:17,132 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 02:59:17,183 INFO L192 MainTranslator]: Completed translation [2019-10-15 02:59:17,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:17 WrapperNode [2019-10-15 02:59:17,184 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 02:59:17,185 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 02:59:17,185 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 02:59:17,185 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 02:59:17,199 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:17" (1/1) ... [2019-10-15 02:59:17,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:17" (1/1) ... [2019-10-15 02:59:17,217 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:17" (1/1) ... [2019-10-15 02:59:17,217 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:17" (1/1) ... [2019-10-15 02:59:17,237 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:17" (1/1) ... [2019-10-15 02:59:17,243 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:17" (1/1) ... [2019-10-15 02:59:17,247 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:17" (1/1) ... [2019-10-15 02:59:17,254 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 02:59:17,255 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 02:59:17,255 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 02:59:17,255 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 02:59:17,256 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 02:59:17,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 02:59:17,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 02:59:17,321 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-15 02:59:17,321 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-15 02:59:17,322 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-10-15 02:59:17,322 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-10-15 02:59:17,322 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_create [2019-10-15 02:59:17,322 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_destroy [2019-10-15 02:59:17,322 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_prepend [2019-10-15 02:59:17,323 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 02:59:17,323 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 02:59:17,323 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-15 02:59:17,323 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-15 02:59:17,323 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-15 02:59:17,323 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-15 02:59:17,324 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-15 02:59:17,324 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-15 02:59:17,324 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-15 02:59:17,324 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-15 02:59:17,324 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-15 02:59:17,325 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-15 02:59:17,325 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-15 02:59:17,325 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-15 02:59:17,325 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-15 02:59:17,325 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-15 02:59:17,325 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-15 02:59:17,326 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-15 02:59:17,326 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-15 02:59:17,326 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-15 02:59:17,326 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-15 02:59:17,326 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-15 02:59:17,326 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-15 02:59:17,326 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-15 02:59:17,327 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-15 02:59:17,327 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-15 02:59:17,327 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-15 02:59:17,327 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-15 02:59:17,327 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-15 02:59:17,327 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-15 02:59:17,328 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-15 02:59:17,328 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-15 02:59:17,328 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-15 02:59:17,328 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-15 02:59:17,328 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-15 02:59:17,328 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-15 02:59:17,329 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-15 02:59:17,329 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-15 02:59:17,329 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-15 02:59:17,329 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-15 02:59:17,329 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-15 02:59:17,329 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-15 02:59:17,329 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-15 02:59:17,330 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-15 02:59:17,330 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-15 02:59:17,330 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-15 02:59:17,330 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-15 02:59:17,330 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-15 02:59:17,330 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-15 02:59:17,331 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-15 02:59:17,331 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-15 02:59:17,331 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-15 02:59:17,331 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-15 02:59:17,331 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-15 02:59:17,331 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 02:59:17,332 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-15 02:59:17,332 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-15 02:59:17,332 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 02:59:17,332 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-15 02:59:17,332 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-15 02:59:17,332 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-15 02:59:17,332 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-15 02:59:17,333 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-15 02:59:17,333 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-15 02:59:17,333 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-15 02:59:17,333 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-15 02:59:17,333 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-15 02:59:17,333 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 02:59:17,333 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-15 02:59:17,334 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-15 02:59:17,334 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-15 02:59:17,334 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-15 02:59:17,334 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-15 02:59:17,334 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-15 02:59:17,334 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-15 02:59:17,335 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-15 02:59:17,335 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-15 02:59:17,335 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-15 02:59:17,335 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-15 02:59:17,335 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-15 02:59:17,335 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-15 02:59:17,336 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-15 02:59:17,336 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-15 02:59:17,336 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-15 02:59:17,336 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-15 02:59:17,336 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-15 02:59:17,336 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-15 02:59:17,336 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-15 02:59:17,337 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-15 02:59:17,337 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-15 02:59:17,337 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-15 02:59:17,337 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-15 02:59:17,337 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-15 02:59:17,337 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-15 02:59:17,337 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-15 02:59:17,338 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-15 02:59:17,338 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-15 02:59:17,338 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-15 02:59:17,338 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-15 02:59:17,338 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-15 02:59:17,338 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-15 02:59:17,339 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-15 02:59:17,339 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-15 02:59:17,339 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-15 02:59:17,339 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-15 02:59:17,339 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-15 02:59:17,339 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-15 02:59:17,339 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-10-15 02:59:17,339 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-10-15 02:59:17,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 02:59:17,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 02:59:17,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 02:59:17,340 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_create [2019-10-15 02:59:17,340 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_destroy [2019-10-15 02:59:17,340 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 02:59:17,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 02:59:17,341 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_prepend [2019-10-15 02:59:17,341 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 02:59:17,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 02:59:17,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-15 02:59:17,341 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 02:59:17,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 02:59:17,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 02:59:17,790 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-10-15 02:59:18,475 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 02:59:18,476 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-15 02:59:18,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:59:18 BoogieIcfgContainer [2019-10-15 02:59:18,477 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 02:59:18,478 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 02:59:18,478 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 02:59:18,481 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 02:59:18,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 02:59:16" (1/3) ... [2019-10-15 02:59:18,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73b36f0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:59:18, skipping insertion in model container [2019-10-15 02:59:18,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:17" (2/3) ... [2019-10-15 02:59:18,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73b36f0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:59:18, skipping insertion in model container [2019-10-15 02:59:18,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:59:18" (3/3) ... [2019-10-15 02:59:18,485 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2c_prepend_equal.i [2019-10-15 02:59:18,495 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 02:59:18,520 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 02:59:18,532 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 02:59:18,556 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 02:59:18,556 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 02:59:18,556 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 02:59:18,557 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 02:59:18,557 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 02:59:18,557 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 02:59:18,557 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 02:59:18,557 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 02:59:18,576 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2019-10-15 02:59:18,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-15 02:59:18,583 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:59:18,584 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:59:18,586 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:59:18,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:59:18,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1888948319, now seen corresponding path program 1 times [2019-10-15 02:59:18,601 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:59:18,601 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485177752] [2019-10-15 02:59:18,602 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:59:18,602 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:59:18,602 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:59:18,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:59:18,878 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 02:59:18,879 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485177752] [2019-10-15 02:59:18,882 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:59:18,882 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 02:59:18,882 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442782704] [2019-10-15 02:59:18,887 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 02:59:18,887 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:59:18,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 02:59:18,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 02:59:18,899 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2019-10-15 02:59:18,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:59:18,934 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2019-10-15 02:59:18,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 02:59:18,936 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 29 [2019-10-15 02:59:18,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:59:18,947 INFO L225 Difference]: With dead ends: 58 [2019-10-15 02:59:18,947 INFO L226 Difference]: Without dead ends: 30 [2019-10-15 02:59:18,952 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 02:59:18,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-10-15 02:59:18,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-10-15 02:59:18,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-10-15 02:59:18,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2019-10-15 02:59:18,993 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 29 [2019-10-15 02:59:18,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:59:18,995 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2019-10-15 02:59:18,995 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 02:59:18,995 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2019-10-15 02:59:18,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-15 02:59:18,997 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:59:18,997 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:59:18,998 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:59:18,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:59:18,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1888934400, now seen corresponding path program 1 times [2019-10-15 02:59:18,998 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:59:18,999 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372505541] [2019-10-15 02:59:18,999 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:59:18,999 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:59:18,999 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:59:19,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:59:19,210 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 02:59:19,210 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372505541] [2019-10-15 02:59:19,211 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:59:19,211 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 02:59:19,211 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395196606] [2019-10-15 02:59:19,213 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 02:59:19,213 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:59:19,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 02:59:19,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 02:59:19,216 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 5 states. [2019-10-15 02:59:19,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:59:19,298 INFO L93 Difference]: Finished difference Result 51 states and 58 transitions. [2019-10-15 02:59:19,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 02:59:19,298 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2019-10-15 02:59:19,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:59:19,300 INFO L225 Difference]: With dead ends: 51 [2019-10-15 02:59:19,300 INFO L226 Difference]: Without dead ends: 33 [2019-10-15 02:59:19,301 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-15 02:59:19,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-10-15 02:59:19,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2019-10-15 02:59:19,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-10-15 02:59:19,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2019-10-15 02:59:19,310 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 29 [2019-10-15 02:59:19,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:59:19,311 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2019-10-15 02:59:19,311 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 02:59:19,311 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2019-10-15 02:59:19,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-10-15 02:59:19,312 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:59:19,313 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:59:19,313 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:59:19,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:59:19,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1136965430, now seen corresponding path program 1 times [2019-10-15 02:59:19,314 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:59:19,314 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987888558] [2019-10-15 02:59:19,314 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:59:19,314 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:59:19,314 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:59:19,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:59:20,847 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2019-10-15 02:59:21,108 WARN L191 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2019-10-15 02:59:21,402 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:59:21,403 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987888558] [2019-10-15 02:59:21,403 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040152777] [2019-10-15 02:59:21,403 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 02:59:21,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:59:21,596 INFO L256 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 113 conjunts are in the unsatisfiable core [2019-10-15 02:59:21,611 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 02:59:21,751 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-10-15 02:59:21,751 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-15 02:59:21,756 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 02:59:21,757 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-15 02:59:21,757 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-10-15 02:59:21,865 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5 treesize of output 3 [2019-10-15 02:59:21,866 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-15 02:59:21,870 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 02:59:21,871 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-15 02:59:21,871 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:14, output treesize:3 [2019-10-15 02:59:22,091 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 02:59:22,092 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 12 treesize of output 28 [2019-10-15 02:59:22,093 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-15 02:59:22,129 INFO L567 ElimStorePlain]: treesize reduction 14, result has 65.0 percent of original size [2019-10-15 02:59:22,129 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-15 02:59:22,130 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:26 [2019-10-15 02:59:22,199 INFO L341 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2019-10-15 02:59:22,200 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 1 case distinctions, treesize of input 29 treesize of output 17 [2019-10-15 02:59:22,200 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-15 02:59:22,222 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 02:59:22,224 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-15 02:59:22,224 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:57, output treesize:53 [2019-10-15 02:59:22,512 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 02:59:22,513 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 23 treesize of output 27 [2019-10-15 02:59:22,514 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-15 02:59:22,535 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 02:59:22,537 INFO L392 ElimStorePlain]: Different costs {0=[|v_#memory_$Pointer$.offset_BEFORE_CALL_1|], 4=[|v_#memory_$Pointer$.base_BEFORE_CALL_1|]} [2019-10-15 02:59:22,542 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 7 treesize of output 3 [2019-10-15 02:59:22,543 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-15 02:59:22,561 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 02:59:22,582 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 02:59:22,583 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 48 [2019-10-15 02:59:22,585 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 02:59:22,588 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-10-15 02:59:22,598 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 02:59:22,599 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-15 02:59:22,600 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:91, output treesize:10 [2019-10-15 02:59:22,709 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 02:59:22,710 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-15 02:59:22,731 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 02:59:22,731 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-15 02:59:22,731 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:76, output treesize:72 [2019-10-15 02:59:22,973 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 02:59:22,974 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 02:59:22,978 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 02:59:23,036 INFO L392 ElimStorePlain]: Different costs {2=[|v_#memory_int_120|, |v_#memory_int_121|, |v_#memory_int_122|, |v_#memory_int_123|, |v_#memory_int_124|, |v_#memory_int_125|, v_prenex_1, |v_#memory_int_119|], 14=[v_prenex_2, v_prenex_3], 36=[|v_#memory_$Pointer$.offset_75|, |v_#memory_$Pointer$.base_76|]} [2019-10-15 02:59:23,113 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-15 02:59:23,508 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-15 02:59:32,801 WARN L191 SmtUtils]: Spent 9.29 s on a formula simplification that was a NOOP. DAG size: 180 [2019-10-15 02:59:32,801 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 02:59:33,081 INFO L496 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-15 02:59:33,523 INFO L496 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-15 02:59:45,436 WARN L191 SmtUtils]: Spent 11.91 s on a formula simplification that was a NOOP. DAG size: 184 [2019-10-15 02:59:45,437 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 02:59:45,614 INFO L496 ElimStorePlain]: Start of recursive call 6: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-15 03:00:01,599 WARN L191 SmtUtils]: Spent 15.98 s on a formula simplification that was a NOOP. DAG size: 180 [2019-10-15 03:00:01,599 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 03:00:01,844 INFO L496 ElimStorePlain]: Start of recursive call 7: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts.