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-ext3-properties/sll_of_sll_nondet_append-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 02:58:42,277 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 02:58:42,279 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 02:58:42,291 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 02:58:42,292 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 02:58:42,293 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 02:58:42,294 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 02:58:42,296 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 02:58:42,297 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 02:58:42,301 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 02:58:42,302 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 02:58:42,303 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 02:58:42,304 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 02:58:42,305 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 02:58:42,306 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 02:58:42,307 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 02:58:42,307 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 02:58:42,308 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 02:58:42,310 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 02:58:42,312 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 02:58:42,313 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 02:58:42,314 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 02:58:42,315 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 02:58:42,316 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 02:58:42,318 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 02:58:42,318 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 02:58:42,318 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 02:58:42,319 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 02:58:42,319 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 02:58:42,320 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 02:58:42,320 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 02:58:42,321 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 02:58:42,322 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 02:58:42,322 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 02:58:42,323 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 02:58:42,324 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 02:58:42,324 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 02:58:42,324 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 02:58:42,325 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 02:58:42,326 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 02:58:42,326 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 02:58:42,327 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 02:58:42,340 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 02:58:42,341 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 02:58:42,342 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 02:58:42,342 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 02:58:42,342 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 02:58:42,342 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 02:58:42,343 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 02:58:42,343 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 02:58:42,343 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 02:58:42,343 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 02:58:42,343 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 02:58:42,344 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 02:58:42,344 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 02:58:42,344 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 02:58:42,344 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 02:58:42,344 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 02:58:42,345 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 02:58:42,345 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 02:58:42,345 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 02:58:42,345 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 02:58:42,345 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 02:58:42,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 02:58:42,346 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 02:58:42,346 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 02:58:42,346 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 02:58:42,346 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 02:58:42,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 02:58:42,347 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 02:58:42,347 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 02:58:42,636 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 02:58:42,649 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 02:58:42,652 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 02:58:42,654 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 02:58:42,654 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 02:58:42,655 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_of_sll_nondet_append-1.i [2019-10-15 02:58:42,713 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/273d992a1/669777aa78f14365ba10bfb0c4adb4c6/FLAG67a8ecb10 [2019-10-15 02:58:43,225 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 02:58:43,226 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-ext3-properties/sll_of_sll_nondet_append-1.i [2019-10-15 02:58:43,242 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/273d992a1/669777aa78f14365ba10bfb0c4adb4c6/FLAG67a8ecb10 [2019-10-15 02:58:43,534 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/273d992a1/669777aa78f14365ba10bfb0c4adb4c6 [2019-10-15 02:58:43,542 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 02:58:43,543 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 02:58:43,544 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 02:58:43,544 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 02:58:43,547 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 02:58:43,548 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:58:43" (1/1) ... [2019-10-15 02:58:43,551 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10c9a76b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:58:43, skipping insertion in model container [2019-10-15 02:58:43,551 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:58:43" (1/1) ... [2019-10-15 02:58:43,559 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 02:58:43,607 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 02:58:44,010 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 02:58:44,026 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 02:58:44,127 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 02:58:44,196 INFO L192 MainTranslator]: Completed translation [2019-10-15 02:58:44,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:58:44 WrapperNode [2019-10-15 02:58:44,197 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 02:58:44,198 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 02:58:44,198 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 02:58:44,198 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 02:58:44,210 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:58:44" (1/1) ... [2019-10-15 02:58:44,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:58:44" (1/1) ... [2019-10-15 02:58:44,228 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:58:44" (1/1) ... [2019-10-15 02:58:44,228 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:58:44" (1/1) ... [2019-10-15 02:58:44,248 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:58:44" (1/1) ... [2019-10-15 02:58:44,255 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:58:44" (1/1) ... [2019-10-15 02:58:44,259 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:58:44" (1/1) ... [2019-10-15 02:58:44,266 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 02:58:44,267 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 02:58:44,267 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 02:58:44,267 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 02:58:44,268 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:58:44" (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 02:58:44,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 02:58:44,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 02:58:44,330 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-15 02:58:44,330 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-15 02:58:44,330 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-10-15 02:58:44,331 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2019-10-15 02:58:44,331 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create_with_sublist [2019-10-15 02:58:44,331 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2019-10-15 02:58:44,331 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_append [2019-10-15 02:58:44,332 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_hierarchical_destroy [2019-10-15 02:58:44,332 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 02:58:44,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 02:58:44,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 02:58:44,332 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-15 02:58:44,333 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-15 02:58:44,333 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-15 02:58:44,333 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-15 02:58:44,336 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-15 02:58:44,336 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-15 02:58:44,337 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-15 02:58:44,337 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-15 02:58:44,338 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-15 02:58:44,338 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-15 02:58:44,338 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-15 02:58:44,339 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-15 02:58:44,339 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-15 02:58:44,340 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-15 02:58:44,341 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-15 02:58:44,341 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-15 02:58:44,341 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-15 02:58:44,341 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-15 02:58:44,341 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-15 02:58:44,341 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-15 02:58:44,342 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-15 02:58:44,342 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-15 02:58:44,342 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-15 02:58:44,342 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-15 02:58:44,343 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-15 02:58:44,343 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-15 02:58:44,343 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-15 02:58:44,343 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-15 02:58:44,343 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-15 02:58:44,343 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-15 02:58:44,343 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-15 02:58:44,344 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-15 02:58:44,344 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-15 02:58:44,344 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-15 02:58:44,344 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-15 02:58:44,344 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-15 02:58:44,344 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-15 02:58:44,344 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-15 02:58:44,345 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-15 02:58:44,345 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-15 02:58:44,345 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-15 02:58:44,345 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-15 02:58:44,345 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-15 02:58:44,345 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-15 02:58:44,346 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-15 02:58:44,346 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-15 02:58:44,346 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-15 02:58:44,347 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-15 02:58:44,347 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-15 02:58:44,347 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-15 02:58:44,347 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-15 02:58:44,347 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-15 02:58:44,347 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 02:58:44,348 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-15 02:58:44,348 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-15 02:58:44,349 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 02:58:44,349 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-15 02:58:44,349 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-15 02:58:44,349 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-15 02:58:44,349 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-15 02:58:44,350 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-15 02:58:44,350 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-15 02:58:44,350 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-15 02:58:44,351 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-15 02:58:44,351 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-15 02:58:44,351 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 02:58:44,351 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-15 02:58:44,353 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-15 02:58:44,353 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-15 02:58:44,353 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-15 02:58:44,353 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-15 02:58:44,354 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-15 02:58:44,354 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-15 02:58:44,354 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-15 02:58:44,355 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-15 02:58:44,355 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-15 02:58:44,355 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-15 02:58:44,355 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-15 02:58:44,355 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-15 02:58:44,355 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-15 02:58:44,356 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-15 02:58:44,356 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-15 02:58:44,356 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-15 02:58:44,356 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-15 02:58:44,356 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-15 02:58:44,356 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-15 02:58:44,357 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-15 02:58:44,357 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-15 02:58:44,357 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-15 02:58:44,357 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-15 02:58:44,357 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-15 02:58:44,357 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-15 02:58:44,357 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-15 02:58:44,357 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-15 02:58:44,358 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-15 02:58:44,358 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-15 02:58:44,358 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-15 02:58:44,358 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-15 02:58:44,358 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-15 02:58:44,358 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-15 02:58:44,358 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-15 02:58:44,359 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-15 02:58:44,359 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-15 02:58:44,359 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-15 02:58:44,359 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-15 02:58:44,359 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-10-15 02:58:44,359 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2019-10-15 02:58:44,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 02:58:44,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 02:58:44,360 INFO L130 BoogieDeclarations]: Found specification of procedure node_create_with_sublist [2019-10-15 02:58:44,360 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2019-10-15 02:58:44,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 02:58:44,361 INFO L130 BoogieDeclarations]: Found specification of procedure sll_append [2019-10-15 02:58:44,361 INFO L130 BoogieDeclarations]: Found specification of procedure sll_hierarchical_destroy [2019-10-15 02:58:44,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 02:58:44,361 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 02:58:44,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 02:58:44,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-15 02:58:44,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 02:58:44,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 02:58:44,736 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-10-15 02:58:45,106 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 02:58:45,107 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-10-15 02:58:45,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:58:45 BoogieIcfgContainer [2019-10-15 02:58:45,109 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 02:58:45,111 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 02:58:45,112 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 02:58:45,115 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 02:58:45,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 02:58:43" (1/3) ... [2019-10-15 02:58:45,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cb22a83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:58:45, skipping insertion in model container [2019-10-15 02:58:45,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:58:44" (2/3) ... [2019-10-15 02:58:45,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cb22a83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:58:45, skipping insertion in model container [2019-10-15 02:58:45,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:58:45" (3/3) ... [2019-10-15 02:58:45,128 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_of_sll_nondet_append-1.i [2019-10-15 02:58:45,140 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 02:58:45,148 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 02:58:45,157 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 02:58:45,181 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 02:58:45,181 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 02:58:45,181 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 02:58:45,182 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 02:58:45,182 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 02:58:45,182 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 02:58:45,182 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 02:58:45,183 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 02:58:45,200 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2019-10-15 02:58:45,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-10-15 02:58:45,206 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:58:45,207 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:58:45,209 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:58:45,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:58:45,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1546971185, now seen corresponding path program 1 times [2019-10-15 02:58:45,224 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:58:45,225 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278051277] [2019-10-15 02:58:45,225 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:58:45,225 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:58:45,225 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:58:45,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:58:45,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:58:45,493 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278051277] [2019-10-15 02:58:45,495 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:58:45,495 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 02:58:45,496 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153124849] [2019-10-15 02:58:45,502 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 02:58:45,502 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:58:45,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 02:58:45,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:58:45,519 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 3 states. [2019-10-15 02:58:45,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:58:45,600 INFO L93 Difference]: Finished difference Result 117 states and 157 transitions. [2019-10-15 02:58:45,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 02:58:45,602 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-10-15 02:58:45,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:58:45,613 INFO L225 Difference]: With dead ends: 117 [2019-10-15 02:58:45,614 INFO L226 Difference]: Without dead ends: 50 [2019-10-15 02:58:45,621 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:58:45,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-10-15 02:58:45,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2019-10-15 02:58:45,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-10-15 02:58:45,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 55 transitions. [2019-10-15 02:58:45,682 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 55 transitions. Word has length 9 [2019-10-15 02:58:45,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:58:45,682 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 55 transitions. [2019-10-15 02:58:45,682 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 02:58:45,682 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 55 transitions. [2019-10-15 02:58:45,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-15 02:58:45,684 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:58:45,684 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:58:45,685 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:58:45,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:58:45,685 INFO L82 PathProgramCache]: Analyzing trace with hash -626152311, now seen corresponding path program 1 times [2019-10-15 02:58:45,685 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:58:45,686 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912268706] [2019-10-15 02:58:45,686 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:58:45,686 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:58:45,686 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:58:45,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:58:45,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 02:58:45,770 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912268706] [2019-10-15 02:58:45,772 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:58:45,772 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 02:58:45,773 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635764631] [2019-10-15 02:58:45,774 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 02:58:45,774 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:58:45,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 02:58:45,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 02:58:45,775 INFO L87 Difference]: Start difference. First operand 45 states and 55 transitions. Second operand 4 states. [2019-10-15 02:58:45,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:58:45,847 INFO L93 Difference]: Finished difference Result 67 states and 85 transitions. [2019-10-15 02:58:45,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 02:58:45,848 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-10-15 02:58:45,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:58:45,851 INFO L225 Difference]: With dead ends: 67 [2019-10-15 02:58:45,851 INFO L226 Difference]: Without dead ends: 50 [2019-10-15 02:58:45,852 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 02:58:45,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-10-15 02:58:45,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2019-10-15 02:58:45,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-10-15 02:58:45,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2019-10-15 02:58:45,861 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 13 [2019-10-15 02:58:45,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:58:45,861 INFO L462 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2019-10-15 02:58:45,861 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 02:58:45,861 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2019-10-15 02:58:45,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-15 02:58:45,863 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:58:45,863 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:58:45,863 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:58:45,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:58:45,863 INFO L82 PathProgramCache]: Analyzing trace with hash 227809436, now seen corresponding path program 1 times [2019-10-15 02:58:45,864 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:58:45,864 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887042804] [2019-10-15 02:58:45,864 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:58:45,864 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:58:45,864 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:58:45,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:58:45,990 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:58:45,990 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887042804] [2019-10-15 02:58:45,991 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:58:45,991 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-15 02:58:45,991 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578925412] [2019-10-15 02:58:45,992 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 02:58:45,992 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:58:45,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 02:58:45,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-15 02:58:45,992 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand 9 states. [2019-10-15 02:58:46,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:58:46,170 INFO L93 Difference]: Finished difference Result 109 states and 135 transitions. [2019-10-15 02:58:46,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 02:58:46,171 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2019-10-15 02:58:46,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:58:46,176 INFO L225 Difference]: With dead ends: 109 [2019-10-15 02:58:46,176 INFO L226 Difference]: Without dead ends: 70 [2019-10-15 02:58:46,177 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-10-15 02:58:46,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2019-10-15 02:58:46,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 66. [2019-10-15 02:58:46,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2019-10-15 02:58:46,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 82 transitions. [2019-10-15 02:58:46,191 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 82 transitions. Word has length 31 [2019-10-15 02:58:46,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:58:46,191 INFO L462 AbstractCegarLoop]: Abstraction has 66 states and 82 transitions. [2019-10-15 02:58:46,191 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 02:58:46,192 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 82 transitions. [2019-10-15 02:58:46,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-10-15 02:58:46,196 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:58:46,196 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:58:46,196 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:58:46,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:58:46,197 INFO L82 PathProgramCache]: Analyzing trace with hash -1550252586, now seen corresponding path program 2 times [2019-10-15 02:58:46,197 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:58:46,197 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711733842] [2019-10-15 02:58:46,197 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:58:46,198 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:58:46,198 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:58:46,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:58:46,469 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:58:46,469 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711733842] [2019-10-15 02:58:46,470 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363942840] [2019-10-15 02:58:46,470 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 02:58:46,599 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-15 02:58:46,600 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 02:58:46,601 INFO L256 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 02:58:46,608 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 02:58:46,712 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-15 02:58:46,712 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 02:58:46,781 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-15 02:58:46,781 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 02:58:46,782 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [13] total 17 [2019-10-15 02:58:46,782 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737916392] [2019-10-15 02:58:46,782 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 02:58:46,783 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:58:46,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 02:58:46,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2019-10-15 02:58:46,784 INFO L87 Difference]: Start difference. First operand 66 states and 82 transitions. Second operand 6 states. [2019-10-15 02:58:46,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:58:46,895 INFO L93 Difference]: Finished difference Result 99 states and 124 transitions. [2019-10-15 02:58:46,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 02:58:46,895 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2019-10-15 02:58:46,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:58:46,897 INFO L225 Difference]: With dead ends: 99 [2019-10-15 02:58:46,897 INFO L226 Difference]: Without dead ends: 85 [2019-10-15 02:58:46,898 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2019-10-15 02:58:46,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2019-10-15 02:58:46,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 79. [2019-10-15 02:58:46,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2019-10-15 02:58:46,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 99 transitions. [2019-10-15 02:58:46,915 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 99 transitions. Word has length 35 [2019-10-15 02:58:46,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:58:46,915 INFO L462 AbstractCegarLoop]: Abstraction has 79 states and 99 transitions. [2019-10-15 02:58:46,916 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 02:58:46,916 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 99 transitions. [2019-10-15 02:58:46,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-10-15 02:58:46,919 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:58:46,919 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:58:47,119 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:58:47,120 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:58:47,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:58:47,121 INFO L82 PathProgramCache]: Analyzing trace with hash -101786895, now seen corresponding path program 1 times [2019-10-15 02:58:47,122 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:58:47,122 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662827042] [2019-10-15 02:58:47,122 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:58:47,122 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:58:47,122 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:58:47,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:58:47,286 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 02:58:47,286 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662827042] [2019-10-15 02:58:47,287 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775368018] [2019-10-15 02:58:47,287 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:58:47,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:58:47,413 INFO L256 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-15 02:58:47,422 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 02:58:47,475 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:58:47,475 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 02:58:47,716 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 02:58:47,766 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 02:58:47,823 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:58:47,823 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 02:58:47,823 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [11] total 18 [2019-10-15 02:58:47,824 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009123216] [2019-10-15 02:58:47,825 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-15 02:58:47,825 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:58:47,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-15 02:58:47,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2019-10-15 02:58:47,826 INFO L87 Difference]: Start difference. First operand 79 states and 99 transitions. Second operand 15 states. [2019-10-15 02:58:48,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:58:48,032 INFO L93 Difference]: Finished difference Result 154 states and 194 transitions. [2019-10-15 02:58:48,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-15 02:58:48,033 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 44 [2019-10-15 02:58:48,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:58:48,036 INFO L225 Difference]: With dead ends: 154 [2019-10-15 02:58:48,036 INFO L226 Difference]: Without dead ends: 83 [2019-10-15 02:58:48,040 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 76 SyntacticMatches, 6 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2019-10-15 02:58:48,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2019-10-15 02:58:48,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 78. [2019-10-15 02:58:48,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2019-10-15 02:58:48,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 99 transitions. [2019-10-15 02:58:48,062 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 99 transitions. Word has length 44 [2019-10-15 02:58:48,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:58:48,063 INFO L462 AbstractCegarLoop]: Abstraction has 78 states and 99 transitions. [2019-10-15 02:58:48,063 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-15 02:58:48,063 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 99 transitions. [2019-10-15 02:58:48,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-15 02:58:48,066 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:58:48,067 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:58:48,268 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:58:48,268 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:58:48,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:58:48,269 INFO L82 PathProgramCache]: Analyzing trace with hash -340056939, now seen corresponding path program 1 times [2019-10-15 02:58:48,269 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:58:48,270 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174499118] [2019-10-15 02:58:48,270 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:58:48,270 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:58:48,270 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:58:48,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:58:48,450 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 02:58:48,451 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174499118] [2019-10-15 02:58:48,451 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613349990] [2019-10-15 02:58:48,451 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:58:48,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:58:48,571 INFO L256 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-15 02:58:48,579 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 02:58:48,642 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:58:48,642 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 02:58:48,926 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 02:58:48,986 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 02:58:49,050 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:58:49,051 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1316793934] [2019-10-15 02:58:49,076 INFO L162 IcfgInterpreter]: Started Sifa with 40 locations of interest [2019-10-15 02:58:49,077 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 02:58:49,082 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 02:58:49,088 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 02:58:49,089 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 02:58:49,211 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 24 for LOIs [2019-10-15 02:58:49,474 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:58:49,671 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:58:49,745 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:58:49,969 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:58:50,009 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:58:50,043 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:58:50,318 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-10-15 02:58:50,328 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-10-15 02:58:52,295 INFO L199 IcfgInterpreter]: Interpreting procedure sll_length with input of size 34 for LOIs [2019-10-15 02:58:52,302 INFO L199 IcfgInterpreter]: Interpreting procedure sll_append with input of size 27 for LOIs [2019-10-15 02:58:52,594 INFO L199 IcfgInterpreter]: Interpreting procedure node_create_with_sublist with input of size 25 for LOIs [2019-10-15 02:58:52,715 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:58:52,791 INFO L199 IcfgInterpreter]: Interpreting procedure sll_create with input of size 37 for LOIs [2019-10-15 02:58:52,862 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:58:52,892 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-15 02:58:52,895 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-15 02:58:53,316 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2019-10-15 02:58:54,621 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2019-10-15 02:58:55,622 WARN L191 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 38 [2019-10-15 02:58:55,975 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48 [2019-10-15 02:58:56,723 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 52 [2019-10-15 02:58:57,104 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 47 [2019-10-15 02:58:57,253 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-15 02:58:57,253 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11, 30] total 49 [2019-10-15 02:58:57,254 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770982345] [2019-10-15 02:58:57,255 INFO L442 AbstractCegarLoop]: Interpolant automaton has 49 states [2019-10-15 02:58:57,255 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:58:57,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2019-10-15 02:58:57,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=2155, Unknown=0, NotChecked=0, Total=2352 [2019-10-15 02:58:57,257 INFO L87 Difference]: Start difference. First operand 78 states and 99 transitions. Second operand 49 states. [2019-10-15 02:58:57,517 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2019-10-15 02:58:57,720 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2019-10-15 02:59:00,208 WARN L191 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2019-10-15 02:59:00,461 WARN L191 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2019-10-15 02:59:01,086 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2019-10-15 02:59:01,353 WARN L191 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2019-10-15 02:59:02,099 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2019-10-15 02:59:02,308 WARN L191 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2019-10-15 02:59:02,614 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 55 [2019-10-15 02:59:02,858 WARN L191 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2019-10-15 02:59:03,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:59:03,063 INFO L93 Difference]: Finished difference Result 231 states and 304 transitions. [2019-10-15 02:59:03,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-10-15 02:59:03,063 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 47 [2019-10-15 02:59:03,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:59:03,066 INFO L225 Difference]: With dead ends: 231 [2019-10-15 02:59:03,066 INFO L226 Difference]: Without dead ends: 164 [2019-10-15 02:59:03,070 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 92 SyntacticMatches, 15 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2265 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=643, Invalid=7189, Unknown=0, NotChecked=0, Total=7832 [2019-10-15 02:59:03,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2019-10-15 02:59:03,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 83. [2019-10-15 02:59:03,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2019-10-15 02:59:03,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 101 transitions. [2019-10-15 02:59:03,087 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 101 transitions. Word has length 47 [2019-10-15 02:59:03,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:59:03,088 INFO L462 AbstractCegarLoop]: Abstraction has 83 states and 101 transitions. [2019-10-15 02:59:03,088 INFO L463 AbstractCegarLoop]: Interpolant automaton has 49 states. [2019-10-15 02:59:03,088 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 101 transitions. [2019-10-15 02:59:03,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-10-15 02:59:03,089 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:59:03,089 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:59:03,294 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:59:03,295 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:59:03,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:59:03,295 INFO L82 PathProgramCache]: Analyzing trace with hash 938002545, now seen corresponding path program 2 times [2019-10-15 02:59:03,296 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:59:03,296 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433590355] [2019-10-15 02:59:03,296 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:59:03,296 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:59:03,297 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:59:03,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:59:03,423 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 02:59:03,423 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433590355] [2019-10-15 02:59:03,424 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680207365] [2019-10-15 02:59:03,424 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:59:03,575 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-10-15 02:59:03,576 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 02:59:03,577 INFO L256 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 02:59:03,579 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 02:59:03,655 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-15 02:59:03,655 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 02:59:03,724 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-15 02:59:03,725 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [120333702] [2019-10-15 02:59:03,727 INFO L162 IcfgInterpreter]: Started Sifa with 40 locations of interest [2019-10-15 02:59:03,727 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 02:59:03,729 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 02:59:03,729 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 02:59:03,729 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 02:59:03,753 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 24 for LOIs [2019-10-15 02:59:03,863 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:59:03,979 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:59:04,017 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:59:04,083 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:59:04,106 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:59:04,121 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:59:04,256 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-10-15 02:59:04,260 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-10-15 02:59:05,419 INFO L199 IcfgInterpreter]: Interpreting procedure sll_length with input of size 34 for LOIs [2019-10-15 02:59:05,426 INFO L199 IcfgInterpreter]: Interpreting procedure sll_append with input of size 29 for LOIs [2019-10-15 02:59:05,814 INFO L199 IcfgInterpreter]: Interpreting procedure node_create_with_sublist with input of size 25 for LOIs [2019-10-15 02:59:05,955 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:59:06,016 INFO L199 IcfgInterpreter]: Interpreting procedure sll_create with input of size 37 for LOIs [2019-10-15 02:59:06,104 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:59:06,147 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-15 02:59:06,150 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-15 02:59:06,756 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2019-10-15 02:59:07,617 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 43 [2019-10-15 02:59:08,191 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2019-10-15 02:59:09,159 WARN L191 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 38 [2019-10-15 02:59:09,460 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48 [2019-10-15 02:59:10,144 WARN L191 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 52 [2019-10-15 02:59:10,582 WARN L191 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 47 [2019-10-15 02:59:10,583 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-15 02:59:10,583 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5, 30] total 47 [2019-10-15 02:59:10,583 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874916313] [2019-10-15 02:59:10,585 INFO L442 AbstractCegarLoop]: Interpolant automaton has 47 states [2019-10-15 02:59:10,585 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:59:10,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2019-10-15 02:59:10,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=1962, Unknown=0, NotChecked=0, Total=2162 [2019-10-15 02:59:10,586 INFO L87 Difference]: Start difference. First operand 83 states and 101 transitions. Second operand 47 states. [2019-10-15 02:59:11,036 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2019-10-15 02:59:11,254 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2019-10-15 02:59:11,852 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2019-10-15 02:59:12,308 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2019-10-15 02:59:13,068 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2019-10-15 02:59:13,948 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2019-10-15 02:59:14,256 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2019-10-15 02:59:14,545 WARN L191 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2019-10-15 02:59:15,224 WARN L191 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2019-10-15 02:59:15,495 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2019-10-15 02:59:16,871 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2019-10-15 02:59:17,047 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 53 [2019-10-15 02:59:17,281 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2019-10-15 02:59:17,489 WARN L191 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2019-10-15 02:59:17,800 WARN L191 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 55 [2019-10-15 02:59:18,042 WARN L191 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2019-10-15 02:59:18,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:59:18,327 INFO L93 Difference]: Finished difference Result 254 states and 326 transitions. [2019-10-15 02:59:18,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2019-10-15 02:59:18,327 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 50 [2019-10-15 02:59:18,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:59:18,330 INFO L225 Difference]: With dead ends: 254 [2019-10-15 02:59:18,330 INFO L226 Difference]: Without dead ends: 182 [2019-10-15 02:59:18,333 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 110 SyntacticMatches, 11 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2735 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=786, Invalid=8144, Unknown=0, NotChecked=0, Total=8930 [2019-10-15 02:59:18,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2019-10-15 02:59:18,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 92. [2019-10-15 02:59:18,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2019-10-15 02:59:18,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 111 transitions. [2019-10-15 02:59:18,351 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 111 transitions. Word has length 50 [2019-10-15 02:59:18,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:59:18,351 INFO L462 AbstractCegarLoop]: Abstraction has 92 states and 111 transitions. [2019-10-15 02:59:18,351 INFO L463 AbstractCegarLoop]: Interpolant automaton has 47 states. [2019-10-15 02:59:18,352 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 111 transitions. [2019-10-15 02:59:18,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-15 02:59:18,353 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:59:18,353 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:59:18,565 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:59:18,566 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:59:18,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:59:18,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1614425295, now seen corresponding path program 3 times [2019-10-15 02:59:18,567 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:59:18,567 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453743402] [2019-10-15 02:59:18,568 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:59:18,568 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:59:18,568 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:59:18,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:59:18,694 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 14 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:59:18,694 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453743402] [2019-10-15 02:59:18,694 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559244589] [2019-10-15 02:59:18,694 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:59:18,875 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-15 02:59:18,876 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 02:59:18,877 INFO L256 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 14 conjunts are in the unsatisfiable core [2019-10-15 02:59:18,880 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 02:59:18,922 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 21 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:59:18,923 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 02:59:19,474 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 21 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:59:19,475 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1072959257] [2019-10-15 02:59:19,477 INFO L162 IcfgInterpreter]: Started Sifa with 40 locations of interest [2019-10-15 02:59:19,478 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 02:59:19,478 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 02:59:19,479 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 02:59:19,479 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 02:59:19,497 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 24 for LOIs [2019-10-15 02:59:19,598 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:59:19,694 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:59:19,729 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:59:19,821 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:59:19,845 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:59:19,864 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:59:20,009 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-10-15 02:59:20,013 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-10-15 02:59:21,111 INFO L199 IcfgInterpreter]: Interpreting procedure sll_length with input of size 34 for LOIs [2019-10-15 02:59:21,116 INFO L199 IcfgInterpreter]: Interpreting procedure sll_append with input of size 27 for LOIs [2019-10-15 02:59:21,412 INFO L199 IcfgInterpreter]: Interpreting procedure node_create_with_sublist with input of size 25 for LOIs [2019-10-15 02:59:21,508 WARN L225 Elim1Store]: Array PQE input equivalent to false