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/sll2n_append_equal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:00:15,321 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:00:15,324 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:00:15,339 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:00:15,340 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:00:15,341 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:00:15,342 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:00:15,344 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:00:15,346 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:00:15,347 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:00:15,348 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:00:15,349 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:00:15,350 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:00:15,351 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:00:15,352 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:00:15,353 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:00:15,354 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:00:15,355 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:00:15,356 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:00:15,358 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:00:15,360 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:00:15,361 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:00:15,362 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:00:15,363 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:00:15,365 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:00:15,366 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:00:15,366 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:00:15,367 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:00:15,367 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:00:15,368 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:00:15,368 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:00:15,369 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:00:15,370 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:00:15,371 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:00:15,372 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:00:15,372 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:00:15,372 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:00:15,373 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:00:15,373 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:00:15,374 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:00:15,374 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:00:15,375 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 03:00:15,396 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:00:15,396 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:00:15,397 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:00:15,398 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:00:15,398 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:00:15,398 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:00:15,398 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:00:15,398 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:00:15,399 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:00:15,399 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:00:15,399 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:00:15,399 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:00:15,399 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:00:15,400 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:00:15,400 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:00:15,400 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:00:15,400 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:00:15,400 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:00:15,401 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:00:15,401 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:00:15,401 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:00:15,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:00:15,401 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:00:15,402 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:00:15,402 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:00:15,402 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:00:15,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:00:15,402 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:00:15,403 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 03:00:15,686 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:00:15,708 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:00:15,712 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:00:15,713 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:00:15,714 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:00:15,715 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2n_append_equal.i [2019-10-15 03:00:15,788 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be8ac3360/0f512acb6e974e7686c603f1d59c8cfc/FLAG1117c0fdc [2019-10-15 03:00:16,356 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:00:16,357 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/sll2n_append_equal.i [2019-10-15 03:00:16,372 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be8ac3360/0f512acb6e974e7686c603f1d59c8cfc/FLAG1117c0fdc [2019-10-15 03:00:16,611 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be8ac3360/0f512acb6e974e7686c603f1d59c8cfc [2019-10-15 03:00:16,622 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:00:16,624 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:00:16,625 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:00:16,625 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:00:16,629 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:00:16,630 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:00:16" (1/1) ... [2019-10-15 03:00:16,633 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@322d5911 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:16, skipping insertion in model container [2019-10-15 03:00:16,633 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:00:16" (1/1) ... [2019-10-15 03:00:16,640 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:00:16,685 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:00:17,128 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:00:17,145 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:00:17,189 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:00:17,246 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:00:17,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:17 WrapperNode [2019-10-15 03:00:17,247 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:00:17,248 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:00:17,248 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:00:17,248 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:00:17,262 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:17" (1/1) ... [2019-10-15 03:00:17,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:17" (1/1) ... [2019-10-15 03:00:17,280 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:17" (1/1) ... [2019-10-15 03:00:17,280 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:17" (1/1) ... [2019-10-15 03:00:17,297 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:17" (1/1) ... [2019-10-15 03:00:17,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:17" (1/1) ... [2019-10-15 03:00:17,308 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:17" (1/1) ... [2019-10-15 03:00:17,316 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:00:17,317 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:00:17,317 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:00:17,317 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:00:17,318 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:17" (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 03:00:17,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:00:17,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:00:17,371 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-15 03:00:17,371 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-15 03:00:17,371 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-10-15 03:00:17,372 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-10-15 03:00:17,372 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2019-10-15 03:00:17,372 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2019-10-15 03:00:17,372 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_append [2019-10-15 03:00:17,372 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:00:17,373 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:00:17,373 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-15 03:00:17,373 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-15 03:00:17,373 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-15 03:00:17,373 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-15 03:00:17,373 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-15 03:00:17,374 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-15 03:00:17,374 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-15 03:00:17,374 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-15 03:00:17,374 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-15 03:00:17,374 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-15 03:00:17,374 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-15 03:00:17,375 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-15 03:00:17,375 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-15 03:00:17,375 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-15 03:00:17,375 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-15 03:00:17,375 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-15 03:00:17,375 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-15 03:00:17,376 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-15 03:00:17,376 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-15 03:00:17,376 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-15 03:00:17,376 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-15 03:00:17,376 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-15 03:00:17,376 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-15 03:00:17,377 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-15 03:00:17,377 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-15 03:00:17,377 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-15 03:00:17,377 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-15 03:00:17,377 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-15 03:00:17,377 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-15 03:00:17,378 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-15 03:00:17,378 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-15 03:00:17,378 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-15 03:00:17,378 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-15 03:00:17,378 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-15 03:00:17,378 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-15 03:00:17,379 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-15 03:00:17,379 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-15 03:00:17,379 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-15 03:00:17,379 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-15 03:00:17,379 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-15 03:00:17,379 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-15 03:00:17,380 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-15 03:00:17,380 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-15 03:00:17,380 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-15 03:00:17,380 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-15 03:00:17,380 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-15 03:00:17,380 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-15 03:00:17,381 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-15 03:00:17,381 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-15 03:00:17,381 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-15 03:00:17,381 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-15 03:00:17,381 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-15 03:00:17,381 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:00:17,382 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-15 03:00:17,382 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-15 03:00:17,382 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:00:17,382 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-15 03:00:17,382 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-15 03:00:17,382 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-15 03:00:17,383 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-15 03:00:17,383 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-15 03:00:17,383 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-15 03:00:17,383 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-15 03:00:17,383 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-15 03:00:17,383 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-15 03:00:17,384 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:00:17,384 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-15 03:00:17,384 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-15 03:00:17,384 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-15 03:00:17,384 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-15 03:00:17,384 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-15 03:00:17,385 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-15 03:00:17,385 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-15 03:00:17,385 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-15 03:00:17,385 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-15 03:00:17,385 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-15 03:00:17,385 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-15 03:00:17,385 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-15 03:00:17,386 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-15 03:00:17,386 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-15 03:00:17,386 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-15 03:00:17,386 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-15 03:00:17,386 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-15 03:00:17,387 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-15 03:00:17,387 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-15 03:00:17,387 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-15 03:00:17,387 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-15 03:00:17,387 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-15 03:00:17,387 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-15 03:00:17,387 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-15 03:00:17,388 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-15 03:00:17,388 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-15 03:00:17,388 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-15 03:00:17,388 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-15 03:00:17,388 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-15 03:00:17,388 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-15 03:00:17,389 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-15 03:00:17,389 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-15 03:00:17,389 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-15 03:00:17,389 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-15 03:00:17,389 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-15 03:00:17,389 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-15 03:00:17,390 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-15 03:00:17,390 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-15 03:00:17,390 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-15 03:00:17,390 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-10-15 03:00:17,390 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-10-15 03:00:17,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:00:17,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:00:17,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:00:17,391 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2019-10-15 03:00:17,391 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2019-10-15 03:00:17,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:00:17,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:00:17,392 INFO L130 BoogieDeclarations]: Found specification of procedure sll_append [2019-10-15 03:00:17,392 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:00:17,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:00:17,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-15 03:00:17,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:00:17,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:00:17,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:00:17,786 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-10-15 03:00:18,031 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:00:18,031 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 03:00:18,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:00:18 BoogieIcfgContainer [2019-10-15 03:00:18,033 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:00:18,034 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:00:18,034 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:00:18,037 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:00:18,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:00:16" (1/3) ... [2019-10-15 03:00:18,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a59ba3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:00:18, skipping insertion in model container [2019-10-15 03:00:18,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:17" (2/3) ... [2019-10-15 03:00:18,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a59ba3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:00:18, skipping insertion in model container [2019-10-15 03:00:18,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:00:18" (3/3) ... [2019-10-15 03:00:18,041 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2n_append_equal.i [2019-10-15 03:00:18,051 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:00:18,059 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:00:18,071 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:00:18,096 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:00:18,096 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:00:18,097 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:00:18,097 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:00:18,097 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:00:18,097 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:00:18,097 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:00:18,098 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:00:18,117 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2019-10-15 03:00:18,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-15 03:00:18,125 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:00:18,126 INFO L380 BasicCegarLoop]: trace histogram [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 03:00:18,128 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:00:18,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:00:18,134 INFO L82 PathProgramCache]: Analyzing trace with hash 776254535, now seen corresponding path program 1 times [2019-10-15 03:00:18,143 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:00:18,144 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104655637] [2019-10-15 03:00:18,144 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:00:18,144 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:00:18,145 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:00:18,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:00:18,405 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 03:00:18,406 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104655637] [2019-10-15 03:00:18,407 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:00:18,408 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:00:18,408 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110423989] [2019-10-15 03:00:18,413 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:00:18,413 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:00:18,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:00:18,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:00:18,431 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 5 states. [2019-10-15 03:00:18,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:00:18,557 INFO L93 Difference]: Finished difference Result 81 states and 100 transitions. [2019-10-15 03:00:18,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:00:18,560 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2019-10-15 03:00:18,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:00:18,574 INFO L225 Difference]: With dead ends: 81 [2019-10-15 03:00:18,575 INFO L226 Difference]: Without dead ends: 35 [2019-10-15 03:00:18,580 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 03:00:18,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-10-15 03:00:18,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2019-10-15 03:00:18,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-10-15 03:00:18,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2019-10-15 03:00:18,646 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 25 [2019-10-15 03:00:18,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:00:18,647 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2019-10-15 03:00:18,647 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:00:18,648 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2019-10-15 03:00:18,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-15 03:00:18,651 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:00:18,651 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, 1, 1, 1] [2019-10-15 03:00:18,652 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:00:18,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:00:18,654 INFO L82 PathProgramCache]: Analyzing trace with hash -711466522, now seen corresponding path program 1 times [2019-10-15 03:00:18,654 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:00:18,655 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404998748] [2019-10-15 03:00:18,655 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:00:18,655 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:00:18,655 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:00:18,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:00:18,829 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 03:00:18,830 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404998748] [2019-10-15 03:00:18,830 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97042801] [2019-10-15 03:00:18,830 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 03:00:18,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:00:18,998 INFO L256 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-15 03:00:19,006 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:00:19,045 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:00:19,046 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:00:19,161 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 03:00:19,161 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1244142321] [2019-10-15 03:00:19,187 INFO L162 IcfgInterpreter]: Started Sifa with 28 locations of interest [2019-10-15 03:00:19,187 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:00:19,194 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:00:19,201 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:00:19,202 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:00:19,376 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-15 03:00:19,565 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 03:00:21,570 INFO L199 IcfgInterpreter]: Interpreting procedure sll_create with input of size 44 for LOIs [2019-10-15 03:00:22,429 INFO L199 IcfgInterpreter]: Interpreting procedure sll_append with input of size 41 for LOIs [2019-10-15 03:00:22,897 INFO L199 IcfgInterpreter]: Interpreting procedure node_create with input of size 42 for LOIs [2019-10-15 03:00:22,953 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-15 03:00:22,956 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-15 03:00:23,221 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2019-10-15 03:00:26,412 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2019-10-15 03:00:26,597 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2019-10-15 03:00:26,888 WARN L191 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2019-10-15 03:00:27,259 WARN L191 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 65 [2019-10-15 03:00:27,609 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 64 [2019-10-15 03:00:28,367 WARN L191 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2019-10-15 03:00:28,370 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-15 03:00:28,370 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 24] total 31 [2019-10-15 03:00:28,370 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275425349] [2019-10-15 03:00:28,372 INFO L442 AbstractCegarLoop]: Interpolant automaton has 31 states [2019-10-15 03:00:28,373 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:00:28,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2019-10-15 03:00:28,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=833, Unknown=1, NotChecked=0, Total=930 [2019-10-15 03:00:28,376 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand 31 states. [2019-10-15 03:00:36,011 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2019-10-15 03:00:36,168 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-10-15 03:00:36,399 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2019-10-15 03:00:36,742 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2019-10-15 03:00:36,950 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2019-10-15 03:00:37,188 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2019-10-15 03:00:37,428 WARN L191 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2019-10-15 03:00:37,707 WARN L191 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2019-10-15 03:00:38,268 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2019-10-15 03:00:38,577 WARN L191 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2019-10-15 03:00:38,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:00:38,595 INFO L93 Difference]: Finished difference Result 79 states and 92 transitions. [2019-10-15 03:00:38,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-10-15 03:00:38,595 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 32 [2019-10-15 03:00:38,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:00:38,597 INFO L225 Difference]: With dead ends: 79 [2019-10-15 03:00:38,597 INFO L226 Difference]: Without dead ends: 57 [2019-10-15 03:00:38,600 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 68 SyntacticMatches, 6 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 937 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=324, Invalid=3095, Unknown=3, NotChecked=0, Total=3422 [2019-10-15 03:00:38,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2019-10-15 03:00:38,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 36. [2019-10-15 03:00:38,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-10-15 03:00:38,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2019-10-15 03:00:38,611 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 32 [2019-10-15 03:00:38,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:00:38,612 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2019-10-15 03:00:38,612 INFO L463 AbstractCegarLoop]: Interpolant automaton has 31 states. [2019-10-15 03:00:38,612 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2019-10-15 03:00:38,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-15 03:00:38,613 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:00:38,614 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2019-10-15 03:00:38,820 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:00:38,821 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:00:38,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:00:38,822 INFO L82 PathProgramCache]: Analyzing trace with hash -190647449, now seen corresponding path program 2 times [2019-10-15 03:00:38,822 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:00:38,822 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876630380] [2019-10-15 03:00:38,823 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:00:38,823 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:00:38,823 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:00:38,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:00:39,135 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-15 03:00:39,135 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876630380] [2019-10-15 03:00:39,135 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:00:39,136 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-15 03:00:39,136 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487234859] [2019-10-15 03:00:39,136 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 03:00:39,136 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:00:39,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 03:00:39,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:00:39,137 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 12 states. [2019-10-15 03:00:39,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:00:39,682 INFO L93 Difference]: Finished difference Result 51 states and 58 transitions. [2019-10-15 03:00:39,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 03:00:39,683 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 39 [2019-10-15 03:00:39,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:00:39,685 INFO L225 Difference]: With dead ends: 51 [2019-10-15 03:00:39,685 INFO L226 Difference]: Without dead ends: 49 [2019-10-15 03:00:39,685 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2019-10-15 03:00:39,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-10-15 03:00:39,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 41. [2019-10-15 03:00:39,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-10-15 03:00:39,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2019-10-15 03:00:39,698 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 39 [2019-10-15 03:00:39,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:00:39,699 INFO L462 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2019-10-15 03:00:39,699 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 03:00:39,699 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2019-10-15 03:00:39,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-15 03:00:39,700 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:00:39,701 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2019-10-15 03:00:39,701 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:00:39,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:00:39,701 INFO L82 PathProgramCache]: Analyzing trace with hash -190579931, now seen corresponding path program 1 times [2019-10-15 03:00:39,702 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:00:39,702 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651172712] [2019-10-15 03:00:39,702 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:00:39,702 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:00:39,702 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:00:39,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:00:39,797 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-15 03:00:39,798 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651172712] [2019-10-15 03:00:39,798 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:00:39,798 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-15 03:00:39,798 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426671356] [2019-10-15 03:00:39,799 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-15 03:00:39,799 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:00:39,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-15 03:00:39,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:00:39,799 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 10 states. [2019-10-15 03:00:39,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:00:39,929 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2019-10-15 03:00:39,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 03:00:39,930 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 39 [2019-10-15 03:00:39,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:00:39,932 INFO L225 Difference]: With dead ends: 49 [2019-10-15 03:00:39,932 INFO L226 Difference]: Without dead ends: 46 [2019-10-15 03:00:39,932 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2019-10-15 03:00:39,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-10-15 03:00:39,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 41. [2019-10-15 03:00:39,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-10-15 03:00:39,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2019-10-15 03:00:39,941 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 39 [2019-10-15 03:00:39,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:00:39,941 INFO L462 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2019-10-15 03:00:39,941 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-15 03:00:39,942 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2019-10-15 03:00:39,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-10-15 03:00:39,943 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:00:39,943 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2019-10-15 03:00:39,943 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:00:39,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:00:39,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1471441602, now seen corresponding path program 1 times [2019-10-15 03:00:39,944 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:00:39,944 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205648845] [2019-10-15 03:00:39,944 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:00:39,944 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:00:39,944 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:00:39,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:00:40,238 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-15 03:00:40,238 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205648845] [2019-10-15 03:00:40,239 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314465139] [2019-10-15 03:00:40,239 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 03:00:40,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:00:40,386 INFO L256 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 39 conjunts are in the unsatisfiable core [2019-10-15 03:00:40,390 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:00:42,597 WARN L860 $PredicateComparison]: unable to prove that (exists ((node_create_~temp~0.offset Int) (node_create_~temp~0.base Int)) (and (<= (+ |c_#StackHeapBarrier| 1) node_create_~temp~0.base) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| node_create_~temp~0.base (store (store (select |c_old(#memory_$Pointer$.base)| node_create_~temp~0.base) (+ node_create_~temp~0.offset 4) 0) node_create_~temp~0.offset (select (select |c_#memory_$Pointer$.base| node_create_~temp~0.base) node_create_~temp~0.offset)))))) is different from true